I learnt a good trick today to undo the pinion nut without the spline nut tool. Put the lower unit back onto the motor and use the flywheel to undo. Worked a treat. The factory already gave you the tool built in 👍🏻.
A million thank you's to Dangar!!! No mechanic will touch my well maintained 120hp 1996 Force. Of all the tutorials I've watched on YouBoob, Dangar's have been THE best. I've gone from being mechanically inclined but clueless about how to diagnose & fix my outboard, to quite proficient. I bet I've saved over $1000 (US) on labor costs thanks to Dangar. Once I'm done dumping money that I don't really have into fixing my outboard, I'll be buying a Dangar shirt to help keep the channel going. Hopefully everyone else who feels the same as me will follow my lead! Thanks Dangar!
Glad I watched all the way through. Got my foot apart all except the forward gear and bearing now I know-how. Just need to watch more on replacing bearing on foward gear bearing and race.
I have worked as a machinerytechnician for 47 years and my Merc o/b had a little mishap ..prop, bent prop shaft etc, your video was very well done Mercury is built the same way so it gave me a good idea how to take the prop shaft out, Thank you for a good video,, no worries mate ! All the Best to you from Canada !
I see a lot of BS on UA-cam that makes me leave negative comments. However, after seeing 7 or 8 of your vids, i can say, you're spot on mate. Great, easy to understand instructions and fantastic close ups of the intricate workings and parts of these maintenance issues with outboard motors. I can't really say anything negative whatsoever....nice work. Please keep it up !!!
Thank you for showing the inside I have removed the shift shaft acidentaly and now I know that I have to remove the gearbox and the foward gear to put it again, thanks I love your videos
Thank you! Working on my 2007 F50 Yamaha now due to milky oil in the lower unit. Found that the upper drive shaft seals have failed. I have more confidence with the repair after watching your videos. Thanks again!
I dont have a Yamaha but i have a US marine force and this video was helpful in figuring out how to remove the driveshaft. Thank you so much for making this video!
Very good video. Always wondered how those gear boxes come apart. I use to rebuild the old kind that the skeg was screwed on.. seems it was much easier back then.
Hello there my new friend! I needed to see this disassembled. I was out last weekend and lost my reverse while trailering. (glad it happened at end of weekend) this video helped me make a decision to just get another lower end. I don't have all the tools necessary to get to that last part, the special finger tools I got, but the gear cam to push into reverse is completely free and spins. anyhow, thanks for giving me an eye full. Peace. Alex
Not everybody that watches all videos need to know something specific, sometimes people watch to just have a little adventure in mechanics, and hear you say “ah-lou-mineim”❤
Hi Stu, especially like the scenes around Dangar, Had an uncle and aunt living on Dangar many years ago. Spent a bit of time on the island myself a long time ago. Thanks for the videos, very informative. Bruce. Kempsey NSW
i must congratulate you on your ability to show anybody as ignorant as i am(about outboard boat motors) and help me to somewhat understand how to work on these engines with some success, not only do you make it interesting but actually make me believe that i can possibly be somewhat successful in my endeavor to repair or replace something on an outboard or to go a little further afield, to repair, replace or install different items not only on the motor but the boat itself. Soanyway thank you for sharing this knowledge which is invaluable to myself and i'm sure many others like me that enjoy tinkering but with a goal in sight. I try to contribute $,s when possible and encourage others to do the same if for no other reason, to help with the expense of materials. so thank you very much, it is very much appreciated. Pat(rick) Reimal (usa)
First rate, again. Your videos remind me of the mechanic who got me started, he didn't teach so much as just talked to himself while solving problems. As a cruiser, I am used to using whatever is at hand like screwdriver drifts. . Funny how something like a stuck woodruf key, can make a half hour job a half day job. Thanks.
Have to say I agree with most of the guys on here......your videos are really informative !! As a retired Elevator mechanic I'm pretty good with all things electro/mechanical and can diagnose most all.......but your vids really help with the little tricks you almost only learn through experience.......thanks so much, as I'm spending much more time on the water these days and enjoy keeping my Honda 130 and boat running top notch.....OH......, I found my dive card also......from 10th grade in high school.....1970......an old NASDS card......which is now PADI......lol......got back to diving for lobster in the Keys !!!
Nice one Stu I just did the seals on my Johnson 90. I used a pitman arm puller I had for lifting my Jeep and some wire to pull the bearing carrier. Was worth a crack and it worked !
That was very informative, thankyou! Was trying to find out how to remove the drive shaft on my Yamaha F60. I somehow managed to completely shear all the teeth off the pinion gear. So far it doesn't look like there is any other damage but a lot of metal debris in the gear box. Hoping I can rebuild it with just a few new parts. Assuming I should inspect and clean all the bearings and flush out the gear box well. Thanks again!
Hello, you commented during the video that you were not sure if the driveshaft removal was really useful! During my attempt to chase down an oil leak in the prop shaft area I ventured into the gear case to examine its condition. My outboard is a Mercury 650 vintage 1965-1968 65 hp. motor. I'm not a mechanic by trade (mostly a plumber) but after watching several of your videos on Utube I thought I think I can do this!. The driveshaft video was particularly helpful, except my driveshaft was really not coming out and the pinion would not drop off easily. I used a 5/16 carriage bolt with the head cut off and split about in half then threaded each half into a coupling with the top bolt locked in by a nut. As I turned the coupling, it pushed up on the drive shaft (after removing the pinon nut) and after some wrenching the driveshaft and top bearing finally came out. The main reason for wanting the driveshaft ,pinion, and forward gear out was to retrieve the cam shift selector that fell into the gear case after the selector rod was accidentally lifted up while replacing the rod seal. There was a sinking feeling when the cam fell into the case and now I had to go after it, but your video was a lifesaver and gave me confidence to try and retrieve it. One thing I would like to ask you is what position should the cam be in when I replace the components? The dog clutch is in the forward gear position so the selector pin in its furthest point. Thank's much! I'll keep watching!!!
Hey Phillip, very ingenious work in getting your driveshaft out. I'm not too sure what position that cam goes in on your motor, but generally if the motor is in forward gear the cam will be on it's thinnest section allowing the dog clutch to move forward towards that gear. Rotating or pushing to the thicker part will then push backwards to select neutral and reverse, at least on the outboards I am more familiar with.
Thanks for the video. It was very exactly what I was looking for. I am taking apart my lower unit on my '61 Merc 700 Full Gear Shift. It's almost exactly the same. Only difference that I saw was that under the water pump, my bearing is a ball bearing type and of course the gear housing cover which is the ring type as opposed to the 2 bolt type you have there. Everything else is pretty much the same exact thing.
Can I change a long drive shaft and the gear selector from a Yamaha 25 hp eshw lower unit to a shorter drive shaft and gear selector. I will really appreciate your input thank you
Excellent video Stu. I have a 2001 Mercury 50 hp 4S that's getting a 5" extension kit and I'll need to replace the driveshaft. The Mercury is very similar to the Yamaha. Thanks to the Yamaha - Mercury collaboration.
Great show Stu, very informative and topics are explained well. I have only recently purchased a boat with a 2 stroke outboard and your shows have given me the confidence to have a crack at servicing and diagnosing some issues myself. I'm looking at adding some lighting and a electric winch but am waiting for you demos before I begin the modifications. Keep them coming, Cheers Denis
Great video Stu. It's good to know how to tear one of these down in case of bad seals or a bent propshaft. It doesn't seem too bad. I also like that vise grip slide hammer setup. I'm learning lots of great tips from you to help me maintain my Yamaha TXRS 150!
Hi DangarStu been good watching all yr clip on UA-cam help me a lot fixing my Yamaha 225hp 2stroke 1998. Can u help me get 1 dog clutch kit oh how much does it cost. Thanks.
Thanks for the video! I just got a bass boat for free that is in terrible shape, including the motors entire bottom end off the motor. Basically everything you showed in the video is in pieces in the bottom of the rod locker. I’m not a mechanic and don’t know if I even have all the parts. I’ll be watching more of your videos to see if I can figure it out and what I need
Another awesome vid mate. I recently drained my gear oil as part of servicing my df50a and it was milky! Couldn’t believe it. Short story is the shop pressure tested it and fitted new oils seals to the prop shaft. I should of done it myself! Keep up the great work. Richy NZ
Excellent videos! I've watched several of yours lately because my son and I have acquired a 'new to us' Palm Beach with a 70 hp '04 Yamaha. We have the lower unit off now and are waiting on new seals. I had to comment on this video because we had your Woodruff key's other brother from hell. I ended up drilling three small holes and turned a small propane bottle upside down to let liquid propane super chill the key. It tapped right out after the propane bath. Wasn't sure I could apply heat to the shaft.
Hi Stu your video left of at the point that I am up to with my Yamaha 90, so I am looking forward to the next video. I need to add an extra shim behind the forward gear because according to the manual, the drive shaft backlash is out of spec according to my measurements, but I didn't use the correct yamaha tool that clamps to the shaft. Also the dog clutch is in a bad way on the reverse side so will change that at the same time. I appreciate the videos - this has been the most relevant for me thanks.
Hi Pete. I would really like to do a video on shimming, but I'd also like to find a way that avoids using custom tools that people won't own. Hopefully I can get it filmed soon.
Buddy….you are the best. If you ever find yourself in the beautiful Southern Gulf Islands of British Columbia, Canada, you will never have to pay for a beer or a feed. And where do I get the t-shirt?
Thanks for the videos it has help me get the boat back in the water after discovering 20 odd electrolysis holes in the hull. Merry Xmas to you and yours.
Another handy video Stu. I hit a submerged rock and jiggered up the gear box. Going to cost a poultice to repair. is it easy enough to replace all the parts again following reverse procedures. Mine is a Johnson 9.9
Hi thanks for the vid. I'm working on an old Tohatsu 18E 2 stroke. The vise grips and 17mm spanner won't get it on this one. Seems pretty tight. Do you happen to know where I can get the drive shaft adapter and spring loaded socket for the nut here in the US? thanks
Thanks. Your videos are absolutely great! I'm currently taking apart my own Yamaha 30 hp outboard as it won't go in reverse and I suspect the reverse gear to be in bad shape so this video was really helpful. It would be great with a follow up video showing how to reassemble the lower unit and setting the gear play.
Thanks Roger. If it is reverse you won't need to remove the drive shaft. Here is a video on that problem. ua-cam.com/video/B4acSf_BgP4/v-deo.html I do definitely need to do a follow-up video on the reassembly side though.
Have you made the bearing replacement video yet? I did not see it in your video list but you do have a lot to sort through. Thanks for making these! Definitely helped me to inspect the bearings on my main driveshaft. The upper bearing beneath the water pump locked up and tore up the shims, or vice versa. The bearing race came easily out of the housing with the bearing (and is stuck to the bearing), but the housing looks good. Not sure where to go from here now.
Hi Spencer, I don't have a video on that yet but hoping to do one soon. The tricky bit with replacing these driveshaft bearings is making sure it is shimmed correctly so the pinion gear meshes correctly with the forward and reverse gears.
Great video, just wanted to see you remove those bearing races on the forward gear and the engine drive shaft. That is the part that I'm having problems with.
Are Mercury's like this? I ask because I have to install a new lower unit on my 60HP Merc and will need to swap my driveshaft to the new unit. If I have to disassemble the new lower unit to install the drive shaft then I don't see the wisdom in shipping assembled lower units. They'll just have to come part.
Is it normal to have some wear on the drive shaft spines?I did a impeller on my 1985 Johnson 20hp and the splines showed some wear when I examined them.thanksthese videos are very helpful.
It's not that common, but after over 30 years of use I guess it can be expected. The trouble with wear is that it introduces play which in turn accelerates future wear so keep an eye on it.
I have a 2002 yamaha 40hp 2 stroke similar to the one in this video. While removing the shift shaft cover to replace seals, I let the shift shaft rise up from the shift cam. Is there a way of getting the shift shaft and cam back into proper position without removing the lower bearing carrier and propeller shaft? Thanks for any advice! I really enjoy your videos! Thanks!
Dangar Marine Thanks. I'm doing a complete rapair of my Yamaha F40 Efi lower unit, so it would be great if you could make that video. Videos of how to do it, makes it so much easier to mimic, than doing it with only a paper manual. Looking foward to it.
Any tips on how to help the pinion gear off if it doesn’t just fall off after removing the nut? Tried a few tugs on the driveshaft but it seems on there pretty tight. 2007 Yamaha F150TXR 4S Appreciate the knowledge you’re sharing!
I would try either prying the pinion down or maybe even put a slide hammer on the drive shaft to lift it up (with water pump and bearing retainer removed of course)
So my lower unit (Force 90) came out of the winter with a big crack along it, right along where the propeller shaft would go. Can I repair this with JP weld so it would hold the gear oil again or would the inside be messed up too and I just have to replace the whole lower unit?
Love the beer drinking while dealing with the woodruff key from hell! If I ever get there, I will bring you a couple of Reposado tequilas as backup. Bearing carrier work begins at 5:40 Thanks Stu!
Working on a unit with a lot of rust and corrision. Vice grips didn't work. I used a standard pipe wrench and viola. 20 seconds later the nut was off. Then to deal with the shaft being rusted into place. :-)
Thanks so much for taking the time to show how all these pieces fit together. I've been searching like crazy for a like this. I engaged the forward gear when the propeller was touching a rocky beach... The engine seems to be running ok, but the propeller won't spin. Do you think it's something to do with that kemload you talk about in 13:40? Cheers
You can remove that shaft without fighting with the pump keyway right away. I use the key for a stop with a 15 inch adjustable spanner wrench instead of vise grip pliers. After you get the nut off then you can pull everything out and put in a vise for further work such as removing that stuck key and usually a sharp chisel works very well removing the key.
And by the way that was a great video very helpful but one other question was where exactly should I take my gears to get machined i've called all of machine shops around my home town and they are unable to do something that small or is there a certain place I should take him to or did you have a close friend machine the gears that you had in one of your videos
I went to a specific guy up on the Central Coast called John Norris. He is used by pretty much all the outboard repair shops around here which tells me it is a bit of a specialist skill.
Excellent video! Wondering if you have any advice for a driveshaft that appears to be seized in the power head. I.E. the lower unit wont drop. Hope you have you have a brilliant trick you wouldn't mind sharing.
Unfortunately there is no easy way with this problem. You can sometimes unbolt the powerhead and lift it slightly from the lower cowling to get heat and penetrating oil in there. Wooden wedges above the gearbox can help keep pressure on overnight etc. I've also tried turning it upside down and running penetrating oil down the driveshaft to reach the crankshaft etc. etc. Good luck!
@@DangarMarine Yep, those are the working theories I have as well. Thanks for taking the time to reply. Hopefully patience and perseverance will prevail in this project. Keep up the videos.
I have an older Yamaha 40 hp 2 stroke. My forward works fine, but my reverse feels and sounds like its trying to engage but will not shift into reverse. Does this sound like a dog clutch issue? Thank you for the video and any answer you can give.
Does the driveshaft need to come out to replace the dog clutch on a Yamaha 200 HPDI? There’s grinding when engaging reverse and a shift linkage adjustment didn’t seem to help. I’m assuming a worn dog clutch. Approximately 950 hours, 2001 model year. Thanks
question: if the drive shaft is stuck in the motor Could removing that nut allow you to have a better chance in some way to unfreeze the shaft to the motor?
Busy trying to replace the drive shaft bearing on our 04 90hp yamaha. Do you have the tool for the locking ring for the carrier cant seem to find a part number. Thanks for the vids helped with a lot.
No, I don't have that tool as none of my outboards have needed it. If you can find a PDF copy of the service manual on the net it will list the part numbers for all the customer tools needed to work on it.
Hi Stu great videos as always.i just took lower unit off a force mercury 120hp to replace the impeller.when I turn drive shaft it feels like its snagging on a curtain point every rotation .not by much though .any clues on what could cause this and should I worry about it .cheers Stu alan
Great video! Thanks! The gears on my Suzuki DT65 are broken, so I am trying to replace them myself after watching this video. Do you also have a video or could you explain on how to remove the gear bearings? Many thanks!
Question: I have an older 30 hp 2 stroke Yamaha. My lower shift cam is out, and I'm not having any luck getting it back in! Is there a trick getting it back in! Or do I need to pull the gears out to get it reinstalled? Is it possible to loosen the gears just enough to get the cam to drop back in place?
When I bought the slide hammer kit it came with a variety of pullers. One of them was a small adapter that replaces the adjuster screw on the Vice Grip and then has a female thread that matches the end of the slide hammer.
Good job Stu i'm having a hell of a time getting those locking pliers to grip onto the shaft may need that spline tool to loosen the pinion nut ? Do you know where i could source the tool from ? cheers Stu
Hi Russell, I got that one from a Yamaha dealer, they sell it as a service tool, but I am still trying to track down a full kit of every size. I'll let you know if I ever find one.
Things just getting better lol got the gears and assembly out then saw metal chunks all the lower unit. Seems to be in good condition just leaves the top end that the damage has been done ? this is vastly becoming the bull in my china shop lol Thanks for all your help stu
Hey buddy I don't know if you remember me talking about removing my driveshaft a few weeks ago I finally got it out but my question is where exactly did you find the socket that fits on top of the driveshaft so when I put it back together I have something to torque the pinion nut with instead of putting something on the driveshaft of itself I know if I grab the driveshaft in the middle there's no harm but I think that socket would be very helpful for me
I can't remember exactly where I got that one now, but you can generally order then through a dealer of your outboard brand. Sometimes they can be a bit funny about selling tools (I believe it is a part of the manufactures rules for dealers), which is kinda annoying and I would even argue questionably legal because as an owner I imagine you have certain rights to maintain it. Having said all that, next time the SnapOn truck comes past I'm going to ask him if they sell a set of all different sizes. I may have to get a second mortgage to buy them though...
if i just need to remove the prop shft to replace or straighten it I do not have to touch the drive shaft or top seal correct .Just remove the bolts and housing and pull it out ?
You are always very informative. I have a 1999 df40 Suzuki and I'm hearing a whine in the lower end. the noise comes and goes. I suspect its one of the bearings since the drive shaft and the forward bearing and reverse (is there one for reverse too? I assume so) are all spinning when in neutral. Is the process about the same for this model? I do all my own work since I cant find a mechanic that really knows what they are doing. I've replaced the water pump so getting to that point is no problem. Also, once I have pulled the lower gearbox I suspect I should be replacing the oil seals there? what do you think?
Hi mate. I haven't worked on many Suzukis but I would be very surprised if they were significantly different from the other Japanese brands. There are bearings for reverse too, I am planning to do a video soon on replacing them all. If you have everything apart it is always a great time to replace those bearings, it could save you a lot of time down the track.
I learnt a good trick today to undo the pinion nut without the spline nut tool. Put the lower unit back onto the motor and use the flywheel to undo. Worked a treat. The factory already gave you the tool built in 👍🏻.
Great tip!
A million thank you's to Dangar!!! No mechanic will touch my well maintained 120hp 1996 Force. Of all the tutorials I've watched on YouBoob, Dangar's have been THE best. I've gone from being mechanically inclined but clueless about how to diagnose & fix my outboard, to quite proficient. I bet I've saved over $1000 (US) on labor costs thanks to Dangar. Once I'm done dumping money that I don't really have into fixing my outboard, I'll be buying a Dangar shirt to help keep the channel going. Hopefully everyone else who feels the same as me will follow my lead! Thanks Dangar!
Thanks mate, glad the vids have helped you with your outboard. Be sure to send me a photo when you get your shirt!
Thanks for your help I could not have fixed my Yamaha lower leg with out your videos .thanks bob.
Glad to help!
Just about to replace the shift cam on my 85aet Stu so your videos (yet again) have been a god send. Thanks a million from Scotland.
DEFINITELY useful! I am working on one of these for the first time and your videos on the subject are my service manual!
Glad I watched all the way through. Got my foot apart all except the forward gear and bearing now I know-how. Just need to watch more on replacing bearing on foward gear bearing and race.
I have worked as a machinerytechnician for 47 years and my Merc o/b had a little mishap ..prop, bent prop shaft etc, your video was very well done Mercury is built the same way so it gave me a good idea how to take the prop shaft out, Thank you for a good video,, no worries mate ! All the Best to you from Canada !
Thanks mate, good luck with the repair! :)
I see a lot of BS on UA-cam that makes me leave negative comments. However, after seeing 7 or 8 of your vids, i can say, you're spot on mate. Great, easy to understand instructions and fantastic close ups of the intricate workings and parts of these maintenance issues with outboard motors. I can't really say anything negative whatsoever....nice work. Please keep it up !!!
Thanks Jack, glad you like the vids. :)
A picture is worth a thousand words! This video is a million! This is incredibly helpful. Thanks so much.
I Concer, very helpful wish I had that trick tool now, for the driveshaft nut but I got a idea ,make two small wooden wedges. Opist
Thank you for showing the inside I have removed the shift shaft acidentaly and now I know that I have to remove the gearbox and the foward gear to put it again, thanks I love your videos
You are welcome!
Thank you! Working on my 2007 F50 Yamaha now due to milky oil in the lower unit. Found that the upper drive shaft seals have failed. I have more confidence with the repair after watching your videos. Thanks again!
Mate where can I send you a six pack of beers? Legit helped me fix my gear select issue within about five minutes. Absolute legend
Glad to hear the video helped mate. There is a PayPal link on the channel page. :)
I dont have a Yamaha but i have a US marine force and this video was helpful in figuring out how to remove the driveshaft. Thank you so much for making this video!
great video explaining the magic inside the gearbox, really helpful revealing the actual workings
Perfect Stu. That gearbox had a rello of mine stumped and we had it apart in minutes after watching your vid.
Glad it helped!
Another gratefull DIY Yamaha owner. You vids have been immensely helpful. If you're ever in South Carolina, first round's on me.
Thanks Miles! :)
Very good video. Always wondered how those gear boxes come apart. I use to rebuild the old kind that the skeg was screwed on.. seems it was much easier back then.
Hello there my new friend! I needed to see this disassembled. I was out last weekend and lost my reverse while trailering. (glad it happened at end of weekend) this video helped me make a decision to just get another lower end. I don't have all the tools necessary to get to that last part, the special finger tools I got, but the gear cam to push into reverse is completely free and spins.
anyhow, thanks for giving me an eye full.
Peace.
Alex
Great video ! You are the best on UA-cam.
Not everybody that watches all videos need to know something specific, sometimes people watch to just have a little adventure in mechanics, and hear you say
“ah-lou-mineim”❤
Hi Stu, especially like the scenes around Dangar, Had an uncle and aunt living on Dangar many years ago. Spent a bit of time on the island myself a long time ago. Thanks for the videos, very informative. Bruce. Kempsey NSW
Thanks Bruce. Hopefully will be filming a lot more on-water stuff over the Christmas break.
Got my Dangar shirt in Stu! Was really cool that it came even cheaper than listed with the US to Aus dollar ratio. Another great video!!!
Cheer Jimbo. Yes, I should mention that the prices are in Australian dollar so people don't think they are more expensive than they really are.
i must congratulate you on your ability to show anybody as ignorant as i am(about outboard boat motors) and help me to somewhat understand how to work on these engines with some success, not only do you make it interesting but actually make me believe that i can possibly be somewhat successful in my endeavor to repair or replace something on an outboard or to go a little further afield, to repair, replace or install different items not only on the motor but the boat itself. Soanyway thank you for sharing this knowledge which is invaluable to myself and i'm sure many others like me that enjoy tinkering but with a goal in sight. I try to contribute $,s when possible and encourage others to do the same if for no other reason, to help with the expense of materials. so thank you very much, it is very much appreciated. Pat(rick) Reimal (usa)
Thanks Pat, I'm glad the video have been helping to build your confidence and I really appreciate your support. Safe boating, Stu.
patrick Reimal
You are the man!!! Thanks so much for doing these videos, so helpful for a wannabe mechanic with an old motor to work on.
First rate, again. Your videos remind me of the mechanic who got me started, he didn't teach so much as just talked to himself while solving problems. As a cruiser, I am used to using whatever is at hand like screwdriver drifts. . Funny how something like a stuck woodruf key, can make a half hour job a half day job. Thanks.
Have to say I agree with most of the guys on here......your videos are really informative !! As a retired Elevator mechanic I'm pretty good with all things electro/mechanical and can diagnose most all.......but your vids really help with the little tricks you almost only learn through experience.......thanks so much, as I'm spending much more time on the water these days and enjoy keeping my Honda 130 and boat running top notch.....OH......, I found my dive card also......from 10th grade in high school.....1970......an old NASDS card......which is now PADI......lol......got back to diving for lobster in the Keys !!!
Thanks Rob, enjoy your time on the water and grab a nice lobster for me! :)
Nice one Stu
I just did the seals on my Johnson 90. I used a pitman arm puller I had for lifting my Jeep and some wire to pull the bearing carrier. Was worth a crack and it worked !
Very helpful. Changing an 8hp Yamaha from long to short shaft. Wanted to keep the long shaft gearbox. Thanks.
Sincere Thanks, extremely helpful, great teacher on layman's terms. Good Kudos to you.
Glad it was helpful!
Great Video from a master technician.
That was very informative, thankyou! Was trying to find out how to remove the drive shaft on my Yamaha F60. I somehow managed to completely shear all the teeth off the pinion gear. So far it doesn't look like there is any other damage but a lot of metal debris in the gear box. Hoping I can rebuild it with just a few new parts. Assuming I should inspect and clean all the bearings and flush out the gear box well. Thanks again!
You're welcome!
Hello, you commented during the video that you were not sure if the driveshaft removal was really useful! During my attempt to chase down an oil leak in the prop shaft area I ventured into the gear case to examine its condition. My outboard is a Mercury 650 vintage 1965-1968 65 hp. motor. I'm not a mechanic by trade (mostly a plumber) but after watching several of your videos on Utube I thought I think I can do this!. The driveshaft video was particularly helpful, except my driveshaft was really not coming out and the pinion would not drop off easily. I used a 5/16 carriage bolt with the head cut off and split about in half then threaded each half into a coupling with the top bolt locked in by a nut. As I turned the coupling, it pushed up on the drive shaft (after removing the pinon nut) and after some wrenching the driveshaft and top bearing finally came out.
The main reason for wanting the driveshaft ,pinion, and forward gear out was to retrieve the cam shift selector that fell into the gear case after the selector rod was accidentally lifted up while replacing the rod seal. There was a sinking feeling when the cam fell into the case and now I had to go after it, but your video was a lifesaver and gave me confidence to try and retrieve it.
One thing I would like to ask you is what position should the cam be in when I replace the components? The dog clutch is in the forward gear position so the selector pin in its furthest point. Thank's much! I'll keep watching!!!
Hey Phillip, very ingenious work in getting your driveshaft out. I'm not too sure what position that cam goes in on your motor, but generally if the motor is in forward gear the cam will be on it's thinnest section allowing the dog clutch to move forward towards that gear. Rotating or pushing to the thicker part will then push backwards to select neutral and reverse, at least on the outboards I am more familiar with.
Thanks for the video. It was very exactly what I was looking for. I am taking apart my lower unit on my '61 Merc 700 Full Gear Shift. It's almost exactly the same. Only difference that I saw was that under the water pump, my bearing is a ball bearing type and of course the gear housing cover which is the ring type as opposed to the 2 bolt type you have there. Everything else is pretty much the same exact thing.
Nice one Stu..and good to see you had the Coops on hand for any flare-ups with the LPG torch. I do the same...
Better to be safe than sorry. ;)
Love the job you do explaining in detail how to fix your own problem thank you
Can I change a long drive shaft and the gear selector from a Yamaha 25 hp eshw lower unit to a shorter drive shaft and gear selector. I will really appreciate your input thank you
Excellent video Stu. I have a 2001 Mercury 50 hp 4S that's getting a 5" extension kit and I'll need to replace the driveshaft. The Mercury is very similar to the Yamaha. Thanks to the Yamaha - Mercury collaboration.
Really useful video thanks Stu. Helped me for stripping down my Honda BF90 which has just started getting gear selection problems sadly.
Thanks Stu, these videos are always useful even if it's plainly normal for you. keep it up.
Thanks mate, will do!
Great show Stu, very informative and topics are explained well. I have only recently purchased a boat with a 2 stroke outboard and your shows have given me the confidence to have a crack at servicing and diagnosing some issues myself. I'm looking at adding some lighting and a electric winch but am waiting for you demos before I begin the modifications. Keep them coming, Cheers Denis
Hey Denis, great to hear the channel has been helping you with your new boat. Enjoy your time on the water!
Great video Stu. It's good to know how to tear one of these down in case of bad seals or a bent propshaft. It doesn't seem too bad. I also like that vise grip slide hammer setup. I'm learning lots of great tips from you to help me maintain my Yamaha TXRS 150!
Thanks mate, glad you got something out of this one.
Fireship1 Please help. Once installed and all back together how much axial movement or axial float should there be on the propeller drive shaft
Hi DangarStu been good watching all yr clip on UA-cam help me a lot fixing my Yamaha 225hp 2stroke 1998. Can u help me get 1 dog clutch kit oh how much does it cost. Thanks.
Thanks for the video! I just got a bass boat for free that is in terrible shape, including the motors entire bottom end off the motor. Basically everything you showed in the video is in pieces in the bottom of the rod locker. I’m not a mechanic and don’t know if I even have all the parts. I’ll be watching more of your videos to see if I can figure it out and what I need
Another awesome vid mate. I recently drained my gear oil as part of servicing my df50a and it was milky! Couldn’t believe it. Short story is the shop pressure tested it and fitted new oils seals to the prop shaft. I should of done it myself! Keep up the great work. Richy NZ
Hi just want to say I really appreciate your help this video was excellent
Glad it helped
very useful to change the driveshaft from 20 inch to 25 inch with an extension kit. Thanks so much
AND, i learned more in your 15:33 minute video about outboards, than the 6 month course i took in college.
Yes, I should do a video on making that change one day.
Glad the videos are helping you. :)
Excellent videos! I've watched several of yours lately because my son and I have acquired a 'new to us' Palm Beach with a 70 hp '04 Yamaha. We have the lower unit off now and are waiting on new seals. I had to comment on this video because we had your Woodruff key's other brother from hell. I ended up drilling three small holes and turned a small propane bottle upside down to let liquid propane super chill the key. It tapped right out after the propane bath. Wasn't sure I could apply heat to the shaft.
Hi Stu your video left of at the point that I am up to with my Yamaha 90, so I am looking forward to the next video. I need to add an extra shim behind the forward gear because according to the manual, the drive shaft backlash is out of spec according to my measurements, but I didn't use the correct yamaha tool that clamps to the shaft. Also the dog clutch is in a bad way on the reverse side so will change that at the same time.
I appreciate the videos - this has been the most relevant for me thanks.
Hi Pete. I would really like to do a video on shimming, but I'd also like to find a way that avoids using custom tools that people won't own. Hopefully I can get it filmed soon.
thank you master really the first time i visit you i get more educated thank you thank you thank you
You are most welcome! :)
hello I have a eska two cycle five horse air cooled can I heat the lower unit up to get the bolts out of it to?
Buddy….you are the best. If you ever find yourself in the beautiful Southern Gulf Islands of British Columbia, Canada, you will never have to pay for a beer or a feed. And where do I get the t-shirt?
Nice, once again a no BS explanation of the workings.
Thanks Ron!
Thanks for the videos it has help me get the boat back in the water after discovering 20 odd electrolysis holes in the hull. Merry Xmas to you and yours.
Thanks mate. I'm very familiar with fighting the old electrolysis holes! You have a merry Christmas too. :)
Yip, thanks. That was a great video - love all your videos. Thanks for sharing.
Glad you like them!
Thank You Very much I just damaged my lower end on the ever changing California Delta waterway.
Another handy video Stu. I hit a submerged rock and jiggered up the gear box. Going to cost a poultice to repair. is it easy enough to replace all the parts again following reverse procedures. Mine is a Johnson 9.9
Hi thanks for the vid. I'm working on an old Tohatsu 18E 2 stroke. The vise grips and 17mm spanner won't get it on this one. Seems pretty tight. Do you happen to know where I can get the drive shaft adapter and spring loaded socket for the nut here in the US? thanks
Thank you! Really educational needed to see hands on dissambly on how to in case these boat motor trany starts doing something weird.
Thank you love your video from Cardinal Ontario Canada on the St Lawrence River.
You're welcome, glad you've been enjoying. :)
thank you appreciate the effort you put in making these vids. Very helpful info
My pleasure!
Thanks. Your videos are absolutely great!
I'm currently taking apart my own Yamaha 30 hp outboard as it won't go in reverse and I suspect the reverse gear to be in bad shape so this video was really helpful.
It would be great with a follow up video showing how to reassemble the lower unit and setting the gear play.
Thanks Roger. If it is reverse you won't need to remove the drive shaft. Here is a video on that problem. ua-cam.com/video/B4acSf_BgP4/v-deo.html I do definitely need to do a follow-up video on the reassembly side though.
Very useful , thank you. From Norway
Glad it was helpful!
Have you made the bearing replacement video yet? I did not see it in your video list but you do have a lot to sort through.
Thanks for making these! Definitely helped me to inspect the bearings on my main driveshaft. The upper bearing beneath the water pump locked up and tore up the shims, or vice versa. The bearing race came easily out of the housing with the bearing (and is stuck to the bearing), but the housing looks good. Not sure where to go from here now.
Hi Spencer, I don't have a video on that yet but hoping to do one soon. The tricky bit with replacing these driveshaft bearings is making sure it is shimmed correctly so the pinion gear meshes correctly with the forward and reverse gears.
Swing on up to Duluth, MN and host a lesson
Great video, just wanted to see you remove those bearing races on the forward gear and the engine drive shaft. That is the part that I'm having problems with.
Are Mercury's like this? I ask because I have to install a new lower unit on my 60HP Merc and will need to swap my driveshaft to the new unit. If I have to disassemble the new lower unit to install the drive shaft then I don't see the wisdom in shipping assembled lower units. They'll just have to come part.
Is it normal to have some wear on the drive shaft spines?I did a impeller on my 1985 Johnson 20hp and the splines showed some wear when I examined them.thanksthese videos are very helpful.
It's not that common, but after over 30 years of use I guess it can be expected. The trouble with wear is that it introduces play which in turn accelerates future wear so keep an eye on it.
thanks again.
Working on a 115 evinrude for first time ever in one other than water pump replacement. Your video very similar and helpful
I have a 2002 yamaha 40hp 2 stroke similar to the one in this video. While removing the shift shaft cover to replace seals, I let the shift shaft rise up from the shift cam. Is there a way of getting the shift shaft and cam back into proper position without removing the lower bearing carrier and propeller shaft?
Thanks for any advice!
I really enjoy your videos!
Thanks!
Thank you Dangar, VERY informative video!
You're welcome. :)
THANK YOU SO MUCH!!! This helped me so much!!!
Great video. But how do you pull out those bearing races ? And how do you pull out the needle bearings. ? Thanks.
Thanks Torben. Those bearings are removed using special bearing pullers. I'll definitely be doing a video on that before too much longer.
Dangar Marine Thanks. I'm doing a complete rapair of my Yamaha F40 Efi lower unit, so it would be great if you could make that video. Videos of how to do it, makes it so much easier to mimic, than doing it with only a paper manual. Looking foward to it.
Great video . Is it the same on Mercury ?
Just what I was looking for thank you
Happy to help.
Any tips on how to help the pinion gear off if it doesn’t just fall off after removing the nut? Tried a few tugs on the driveshaft but it seems on there pretty tight.
2007 Yamaha F150TXR 4S
Appreciate the knowledge you’re sharing!
I would try either prying the pinion down or maybe even put a slide hammer on the drive shaft to lift it up (with water pump and bearing retainer removed of course)
So my lower unit (Force 90) came out of the winter with a big crack along it, right along where the propeller shaft would go. Can I repair this with JP weld so it would hold the gear oil again or would the inside be messed up too and I just have to replace the whole lower unit?
Very very helpful and informative great videos thank you sir
Love the beer drinking while dealing with the woodruff key from hell! If I ever get there, I will bring you a couple of Reposado tequilas as backup. Bearing carrier work begins at 5:40 Thanks Stu!
Working on a unit with a lot of rust and corrision. Vice grips didn't work. I used a standard pipe wrench and viola. 20 seconds later the nut was off. Then to deal with the shaft being rusted into place. :-)
Thanks so much for taking the time to show how all these pieces fit together. I've been searching like crazy for a like this. I engaged the forward gear when the propeller was touching a rocky beach... The engine seems to be running ok, but the propeller won't spin.
Do you think it's something to do with that kemload you talk about in 13:40?
Cheers
You can remove that shaft without fighting with the pump keyway right away. I use the key for a stop with a 15 inch adjustable spanner wrench instead of vise grip pliers. After you get the nut off then you can pull everything out and put in a vise for further work such as removing that stuck key and usually a sharp chisel works very well removing the key.
And by the way that was a great video very helpful but one other question was where exactly should I take my gears to get machined i've called all of machine shops around my home town and they are unable to do something that small or is there a certain place I should take him to or did you have a close friend machine the gears that you had in one of your videos
I went to a specific guy up on the Central Coast called John Norris. He is used by pretty much all the outboard repair shops around here which tells me it is a bit of a specialist skill.
Excellent video! Wondering if you have any advice for a driveshaft that appears to be seized in the power head. I.E. the lower unit wont drop. Hope you have you have a brilliant trick you wouldn't mind sharing.
Unfortunately there is no easy way with this problem. You can sometimes unbolt the powerhead and lift it slightly from the lower cowling to get heat and penetrating oil in there. Wooden wedges above the gearbox can help keep pressure on overnight etc. I've also tried turning it upside down and running penetrating oil down the driveshaft to reach the crankshaft etc. etc. Good luck!
@@DangarMarine Yep, those are the working theories I have as well. Thanks for taking the time to reply. Hopefully patience and perseverance will prevail in this project. Keep up the videos.
Very, very helpful. thanks so much!
Thanks for the this video it was the bit I was stuck on thank you so much
I have an older Yamaha 40 hp 2 stroke. My forward works fine, but my reverse feels and sounds like its trying to engage but will not shift into reverse. Does this sound like a dog clutch issue? Thank you for the video and any answer you can give.
is there a video on removing the shifter?
(it has oil seals also)
Does the driveshaft need to come out to replace the dog clutch on a Yamaha 200 HPDI? There’s grinding when engaging reverse and a shift linkage adjustment didn’t seem to help. I’m assuming a worn dog clutch. Approximately 950 hours, 2001 model year. Thanks
question: if the drive shaft is stuck in the motor Could removing that nut allow you to have a better chance in some way to unfreeze the shaft to the motor?
Busy trying to replace the drive shaft bearing on our 04 90hp yamaha. Do you have the tool for the locking ring for the carrier cant seem to find a part number. Thanks for the vids helped with a lot.
No, I don't have that tool as none of my outboards have needed it. If you can find a PDF copy of the service manual on the net it will list the part numbers for all the customer tools needed to work on it.
Hi Stu great videos as always.i just took lower unit off a force mercury 120hp to replace the impeller.when I turn drive shaft it feels like its snagging on a curtain point every rotation .not by much though .any clues on what could cause this and should I worry about it .cheers Stu alan
Great vid Man. ?... Do you know what the tread dia size etc for a 1999 yamaha 90 hp outboard prop shaft. Lost my Castle nut lol Thanks
Great video! Thanks! The gears on my Suzuki DT65 are broken, so I am trying to replace them myself after watching this video. Do you also have a video or could you explain on how to remove the gear bearings? Many thanks!
Thanks Martin, not yet, but I'm really hoping to film that soon.
can you please show me what that puller looks like that you used to pull the bearing carrier or where i can get it.
Hi. Three small ball bearings fell out after i took out the shaft and gears. Where do they go?
Excellent! Just seeing it taken apart and the how's and why's is everything! Thanks!
You're welcome. :)
Question: I have an older 30 hp 2 stroke Yamaha. My lower shift cam is out, and I'm not having any luck getting it back in! Is there a trick getting it back in! Or do I need to pull the gears out to get it reinstalled?
Is it possible to loosen the gears just enough to get the cam to drop back in place?
what would cause a prop shaft to move in and out (about a 1/4 inch) after replacing?
did you make that slide hammer/vice grip? That is a useful piece of kit.
When I bought the slide hammer kit it came with a variety of pullers. One of them was a small adapter that replaces the adjuster screw on the Vice Grip and then has a female thread that matches the end of the slide hammer.
I VERY much needed this video! thanks! lmao at the padi card! all good stuff, much appreciated.
Good job Stu i'm having a hell of a time getting those locking pliers to grip onto the shaft may need that spline tool to loosen the pinion nut ? Do you know where i could source the tool from ? cheers Stu
Hi Russell, I got that one from a Yamaha dealer, they sell it as a service tool, but I am still trying to track down a full kit of every size. I'll let you know if I ever find one.
Cheers Stu
Things just getting better lol got the gears and assembly out then saw metal chunks all the lower unit. Seems to be in good condition just leaves the top end that the damage has been done ? this is vastly
becoming the bull in my china shop lol
Thanks for all your help stu
Hey buddy I don't know if you remember me talking about removing my driveshaft a few weeks ago I finally got it out but my question is where exactly did you find the socket that fits on top of the driveshaft so when I put it back together I have something to torque the pinion nut with instead of putting something on the driveshaft of itself I know if I grab the driveshaft in the middle there's no harm but I think that socket would be very helpful for me
I can't remember exactly where I got that one now, but you can generally order then through a dealer of your outboard brand. Sometimes they can be a bit funny about selling tools (I believe it is a part of the manufactures rules for dealers), which is kinda annoying and I would even argue questionably legal because as an owner I imagine you have certain rights to maintain it. Having said all that, next time the SnapOn truck comes past I'm going to ask him if they sell a set of all different sizes. I may have to get a second mortgage to buy them though...
if i just need to remove the prop shft to replace or straighten it I do not have to touch the drive shaft or top seal correct .Just remove the bolts and housing and pull it out ?
You are always very informative. I have a 1999 df40 Suzuki and I'm hearing a whine in the lower end. the noise comes and goes. I suspect its one of the bearings since the drive shaft and the forward bearing and reverse (is there one for reverse too? I assume so) are all spinning when in neutral. Is the process about the same for this model? I do all my own work since I cant find a mechanic that really knows what they are doing. I've replaced the water pump so getting to that point is no problem. Also, once I have pulled the lower gearbox I suspect I should be replacing the oil seals there? what do you think?
Hi mate. I haven't worked on many Suzukis but I would be very surprised if they were significantly different from the other Japanese brands. There are bearings for reverse too, I am planning to do a video soon on replacing them all. If you have everything apart it is always a great time to replace those bearings, it could save you a lot of time down the track.