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Fixing a 2-STROKE OUTBOARD Motor [Capable Cruising Guides]
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- Опубліковано 21 тра 2019
- This week, we helped our neighbor Adventureman Dan aboard S/V Tethys to diagnose and fix his two-stroke Mercury outboard. In this video, Clark and Dan talk about how to identify the problem and get the motor running again so Dan can stop rowing and get back to chasing world records!
Check out Adventureman Dan's channel here: / @adventureman_dan
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![Fixing a 4-STROKE OUTBOARD Motor [Capable Cruising Guides]](http://i.ytimg.com/vi/5dRoPLzYpYc/mqdefault.jpg)
![Fixing a 4-STROKE OUTBOARD Motor [Capable Cruising Guides]](/img/tr.png)
When I am dealing with outboard motors with fuel problems, I always swap out the entire fuel tank, and hoses from a good running engine before I tear into the engine. Seen so many times that a clog line, or a pin hole in the line cause so many problems. Easy to check and for me lots of the issues where the gas tank or lines.
One of your best!! Teaching the knowledge needed is always better than just doing it for someone. He will pass it along throughout his lifetime, just as you have. You have benefited countless people into the future by spending a bit of time mentoring. My grandfather used to always tell me the greatest gift you can give someone is your time, and you have just proved it to be true. Thanks again for a great video and wonderful life lesson.
I have one sitting in my grand fathers garage its a Johnson from the 60s the needle was stuck solid.I repair it and was a very simple mix and now it runs like the day it come from the factory.You are helping out a lot of people thanks for sharing
You're welcome. Please share video links. I would really like to attract more subscribers.
Another great video. You’re not only an excellent mechanic but also an awesome teacher. Thanks for the video.
The guy summed it up perfectly at the end so many people on here don't really seem to know what they are talking about but you got the point across in very simple but detailed fashion loved it.
Thank You.
LOVE, LOVE, LOVE. I have often thought people with a small garage shop could learn these basic skills and make a little extra money on the side. In the suburbs people often pay $100+ an hour for such services. Learning how to do all the work yourself saves a ton and even better gives you control. I have found that with home remodeling. Knowledge is the key.
Seems like you have a good knowledge of the concepts for excellence problem solving. Kudos being a patient teacher.
And may I mention that power to weight ratio is awesome on two strokes and when properly tuned with good quality 2 stroke oil they are quite clean burning, and the simplicity is way better than 4 strokes and way cheaper to repair.
No cam belts to replace and on looking on outboard problems its all salt water in bottom end and over heating and Corrosion. The only decoke when on a Engine strip is the water jacket with the fured up corrosion and you would get that in a 4 stroke so for recreational use on a budget the Mercury 2 strokes are a good bet.
Especially if you have to lug it around
check the fuel filter before you go "tearing" things apart...
Good work Clark, I'm going to have to remember this when I try and get my 1965 or so 6 horse Johnson running. I do know it turns over and I likely ran all of the gas out of it last time I used it. Keep the good stuff coming Clark.
I have a terrible success rate of repairing carb problems, but after watching this video , I fortunately had the exact same problem as my 15hp merc outboard. Blocked jet with gunk from the fuel bowl. I originally thought it was an electrical problem because at WOT it would die like a light switch after a few minutes of running but will start instantly again. After checking and cleaning fuel filters, the boat died and would die shortly after. It feels good to have a boat running mint again. It was not a good feeling having a dead motor on the water! Thanks Emily and Clark.
Hi Darren,
Glad it helped. You could always buy me a beer on patreon. :)
Clark
Great job Clark...You nailed it!! I really liked that you fixed it without resorting to the KIT...
Thanks Edward. I've never actually used a kit. But there have been times I really wanted a preformed gasket.
Hope you enjoy our other videos, and please share on social media if you think your friends might also like our stuff. We appreciate new viewers.
This gives me hope. I am at a top muskie lake where I live. I need my motor working. This will be my project the next few days.
In my time obsessively viewing sailing howto VLOGs, this is the best I have seen.
Thanks. We have a lot more coming.
For example: Just waiting for the next 4 stroke to fail so I can do one on that.
That's what cruisers do, help out other cruisers and the community they live in. Best explanation I have seen on how a carburetor works. I have fixed, cursed at, yelled, threw away, replaced and repaired more than I cared to. Here in the states these days, if you leave this crappy gas in the bowl, it gets gunked up quick, even with fuel additives on my lawn mower, weed wacker and blower. I finally found just changing the carb is a lot easier on my soul, but not my budget...
Thank you emily n clark...took my carburetor off n cleaned it by myself....thanks to y'all's vid!!! carol
Glad you did the project yourself. Good on you, feels good knowing how to fix your motor doesn't it. ?
What a great teacher. I'd give anything to spend a day on that guys boat, I know I would come away with a better understanding of something
Thanks Jacob.
We are considering inviting patrons on for a sort of learning charter after this Pandemic is more under control.
daddy please shout me out xoxoxox uwu
Very nice diagnose explanation / demo. I learned plenty : the one way valve is new 2 me. Plus clark's attitude is 'to die for '.
Thank You !
Got mine running again this morning.
We are glad the video helped.
Share it around where it might help others, please.
Fantastic engineer with great communication skills. Great video
Thanks Alan. That was so nice of you to say. We hope you subscribe and enjoy some of our other videos.
If you think your friends might also like our stuff, how about sharing on social media? We'd really appreciate the new viewers.
I'm having trouble with my mercury 4 cylinder 2 stroke 85hp starting. Once it starts it runs well until you turn it off, then it's a pain to start again. I have zero experience with motors but this video gives me hope! I'm SO glad that he mentioned the part "if once the engine starts it runs good but it's a nightmare to start". Thanks
Hope it goes well for you.
The bigger old mercs have multiple carbonators. If yours does it's just more of the same.
A good trick for 4 cylinders not firing in all 4. With an insolated glove pull off one spark plugs wire at a time. If the engine slowed that cylinder was firing. If it stays the same you found the one that was missing.
I've pinned the link to this. I very much trust Clark with mechanical and electrical things as he is a trained engineer, with (very importantly) an engineer's way of thinking. I always feel it's very brave to carry out repairs over deepish water as I usually have unexpected fly-offs by screw, nuts etc.
It's happened.
You’re a renaissance man Clark! I don’t know many tech guys who are also good mechanics.
Great video! I have an old Mercury outboard. They’re powerful but temperamental.
Thank you Jeff, so nice of you to say.
The old mercs are fine. The new ones are not.
Hey Emily, really really good camera work!
yup, cleaning those jets and checking the float is about all I know about a carb! nice instructional video
Laundry list of questions. I guess these are suggestions for videos. I am a curious person.
1. Why don't you fish to get food as well? I see you make equipment, etc... but I don't see any reference to you fishing.
2. Where do you register your boat for property tax purposes? You have to pay property taxes if its registered in the US right?
3. How do your taxes work? Do you have to file taxes in multiple countries? What about Emily? She is technically working from another country on the boat right? Or is it just US taxes.
4. What do you do at night when its dark? You don't have a TV right? Is there a public library in the Bahamas you can use to get books to read?
5. How many hours a week do you spend on projects (work) on your boat vs. social time? It sounds like a full time job.
6. You guys talk about your monthly expenses, but that does not include all the food you stocked up on. When you do your budget can you include the cost of the food you ate and other supplies you used up to get an idea of the real budget?
7. How do you know a place is safe to leave your boat during Hurricane season? Hurricanes hit florida last year and can hit anywhere in the carribean? You can leave your boat somewhere and a hurricane hits it.
8. Have you ever had problems with people breaking into your boat and looting stuff when you leave it for hurricane season or any other time? Any issues with crime on the water? You guys are kind of exposed out there if someone comes up in a small boat at night.
9. Are all the cruisers Americans? Have you met any from other countries? Do you socialize much with the populations of the countries or mainly with cruisers?
10. What do you do for the part of the year when you don't stay in your boat? Do you live in Emily's house? What do you do all day?
I'm sure we will get to a lot of these. I've captured your questions into our list.
You might enjoy watch our adventure logs. There is a playlist. We have talked about a few if these things there. We go into a lot if detail on our life in these.
The best teacher ! Awesome. I wish more people could explain things like you do !
Thanks Claus so nice of you to say. Would you consider sharing our playlists on social media? We would really appreciate the new viewers and your friends might also like our videos.
@@EmilyAndClark. yes absolutely. I just came upon your channel. I watch a lot of cursing sailor channels. You seem to be the most knowledgeable one.I'm really impressed by the way you explain things. Makes it really easy to understand things.Great!
Seagull engines were built in the UK one cylinder two stroke easy simple electronics simple carburettor had duel airflow in case of water as Many were dropped in to the sea cleaned out and worked very strange how they were built. When they made rules against two strokes that was the end of the company sadly. They started from two HP right up to ten HP. No Reverse gear no twist grip it speed was like lawn mower using your thumb to stop was just taking the thumb switch all the way back to stop which may not work to stop it so put hand over the carb and turn off the fuel. A terrible dangerous idea to many is how to start the seagull. A pull knotted rope that can kick back also trap the rope. No modern pull start with recoil just rope on a pulley with a notch The Fuel tank only held two gallons of mixed fuel painted black as engine was silver. Its prop was designed to push anything as once started it was going there is no neutral or out of gear. They tested a WW2 seagull pulling via an aluminium boat two huge barges down the Thems river in the UK in the 1960s very slow but did it. Even though I am British the engines were built in to the 1980s to 1990 but not sure what happened after that as Two strokes were being phased out of water ways because of the pollution. I had one on a river boat 15 foot all wood one.
If I was looking for a 90 to 150 hp Outboard on a budget for a 15 ft 80s speedboat for some boating and the boat mainly on the Trailer surely a Mercury 6 Tower or 3 Cylinder Two stroke would be the best chose. But fantastic and informative thanks.
Good stuff Clark! I have a 2000 Tracker 25hp 2 stroke and it has been great for me to learn on and I had the same issue recently, starts great most the time plus idles fine then when getting up to speed it would putter out and die. Cleaned my fuel filter, got a new fuel hose which was deteriorating and used seafoam to help flush things out and so far so good, next step I would clean my carb and check my reed valves out of curiosity
This guy really knows a lot about 2 strokes and carbs!
Thanks
Dude thank you! I cleaned it and it works now
Glad to hear that
I'd love to have Clark's knowledge. No wonder he was able to retire at 36!!
I've also just subbed to Adventureman Dan
Dan's a great guy. Deserves more views.
Good video guys.
Worth noting that when you reinstall a carburetor's bowl, one should be very careful not to put Any more torque than necessary on the bolt. This is because the bowl is often made of very thin metal and is easy to bend. The next time it's reinstalled (because there Will be a next time) it will be bent and not allow it to seal properly. Easy fix to bend it back. But easier still to avoid the problem altogether.
Nice video with some very valuable insight. It’s the little things that make for a good wrench bender.
Thanks Mark,
You might also like our 4 stroke video.
Awesome tutorial!
Thanks, hope it helped. We have a 4stroke one as well.
I knew you where going to connect, thats why I hinted Dan about you. 😉
Thank you very informative. Working in a 8hp yamaha.
You're welcome Ralph. Hope your project goes well.
Love your channel, usually watch your "Enough" videos but we just bought an old 58 Texas Maid (with fins and all :)) and she has a 1963 2 stroke hanging off the back, runs good now but will keep these tips in mind! Thanks again!
... Gotta love Clark's modest honesty... hehe...
Great video!
Very informative. Keep them coming.
Wish this guy had his own channel. Wealth of info!
I do have my own channel!
Push the subscribe button and look at the list of videos. I have hundreds!
Emily & Clark's Adventure oh man I thought this was that young kids channel. You have a wealth of knowledge man! Would love to see what else you have to teach about outboards.
I’ve got two 2st Mercury outboards - an 8 and a 3.3hp. And they just keep going. I am amazed at how reliable they both are.
Great. Are they older?
Awesome explanation of the 2 stroke carb and beautiful waters wherever y'all are.
Thanks Stephen. Did you get an engine running? Assuming that's why you found the video.
Please take a look at our other videos and maybe subscribe.
@@EmilyAndClark I also work on small engines so it caught my attention, never can learn to much though so... Plus I thought it was awesome that you lived in water so checked out a few of your other videos about your boatand it being self contained. Always been a dream of mine to live on the water and may come true one day hopefully. If you don't mind me asking, where were y'all at in this video, the water was beautiful?!
Georgetown Bahamas. Whole country looks like that. Most better. Our bay is the cloudiest around.
@@EmilyAndClark Thanks so much for the quick replies. watched a few more of your videos. Looking forward to watching more. Hope y'all are doing great and the weather is beautiful!
Thanks for watching. We are trying to build the channel. Please subscribe, and if you are feeling really helpful share something on social media. We would really appreciate the new viewers.
Very informative and helpful. 👍
A prudent move would have even to clean out the fuel filter at the same time
Good job , ya 2 strokes are lighter, simpler, durable, you know your stuff . Bravo 👍
Brilliant! Thanks for providing the link in your reply to my comment on your 4-stroke video. 👍
So, I’m the proud owner of a new to me, 9’ inflatable with inflatable deck and keel with a 2012 Mercury 5hp 2-stroke. My first tender for my 39’ sailboat. I sail on the Great Lakes and up to now have been harbour hopping as we cruise and now feel so liberated having the dingy and anchoring out. Bought all this used at an incredible price and am so happy with it as it runs flawlessly. So, my question: Do you have a recommendation for a light efficient 4-5 hp 4-stroke outboard? I’m looking to upgrade to an aluminum 8’ rib and want to keep things as light as possible. I like your idea of electronic ignition. If not available, what’s your next best suggestion?
No one makes a fuel injected motor that small. If I was to buy a motor that sized now I'd try the Suzuki. I like mine, it seems built well. They make the lightest offerings. The 6 weighs the same as the 5 so I'd get the 6. onlineoutboards.com/collections/outboard-motors/products/suzuki-6-hp-df6as2-outboard-motor
I've bought from this outfit before. Always a good experience and cheap/fast. Not a sponsor or anything, just who I recommend to friends. (Though I should hit them up for a sponsorship)
Tahatsu makes a good inexpensive motor as well.
Yves. Have you subscribed to us yet. We live for that subscription number. In fact would you consider sharing our playlists on social media? Your friends might also like our stuff and we like to see that subscriber number grow.
Emily & Clark's Adventure , subscribes last night as soon as I saw your vid. Have watch 3 or 4 vlogs so far. Great stuff 👍. Will definitely share. Thanks for all your comments/replies, very helpful.
That was awesome. More videos like this please!
Sure. Next time someone has a problem with a 4 stroke I'll have to film it. They are different in a few ways.
@@EmilyAndClark That would be great! You explained everything very clearly and there is a lot of value in this. Sailboat engine troubleshooting vids are also welcome as I'm sure many viewers would agree.
From experience, when you take a carb apart, always photo/ video. I didn’t and could not work out how to put the diaphragm back on, in the end bought a kit..just as well perhaps.
Also, first thing is to drain the float chamber, could have water in the bottom
Loved this - learned a lot. Thx.
I love those old Mercury’s so awsome those old late 80s early 90s models so awsome looked cooler back then
Old real Mercury's were great. But they don't make engines anymore. They have become a marketing company that buys engines from Tahatsu. They are just selling their good name like Craftsman.
I'd have no problem with that except they add "features" to the Tahatsu that fail and make it hard to work on.
Just so you know the trick to taking these carbs off (6hp-most 20-25hp motors with the pull to prime) the 2 retaining screws that hold the primer assembly to the carb can stay on. Simply remove the tiny screw holding the primer plunger off completely, then remove the metal retaining ring on the inside. now you can slide the plunger completely off and thus remove the carb!
"if the plumbing works, dont F with it." good video man, they should have design the carb to never have a issue with the needle valve. the world would be more happy if that thing never got stuck.
Great video about real life on the water.
You the man. Great job, I liked the video. Well done 😀😀
Great explanation.
My golden rule for 2 strokes is if its not going to be using regularly, run it dry.
Good idea for all carb motors. Especially with ethanol in the gas
good video, yes, and you fixed it, but I would have liked to see you lay down a clean-ish white cloth on the boat deck (at least a paper towel) before you started on the carb. might prevent tiny wood slivers and other dirt from getting into the carb during re-assembly and helps to not lose the tiny parts. also for young mechanics out there... might as well spray a lot of carb cleaner all thru that carb and its other jets since you have it right there in your hand.
Solid video. Good explanations
Thanks. We have a 4 stroke version coming out soon. You might like it as well. Have you subscribed to our channel? -C
Seen more four strokers getting bullied at sea while the 2strokes towing them. I definitely say that the 2strokes are way more reliable than the 4. Yes the 2strokes they consume more fuel BUT sure will get you home
Man, I couldn’t work like that, I’d drop all my tools overboard for sure 😂
Great video! I have that exact outboard, and I'll be testing it out on the lake on my tiny MacGregor 22 this weekend. (I mean I know it works, as I did the barrel test for almost an hour and it was running smooth) We'll see how bad fuel efficiency is compared to 4-cycle Honda. Thanks for that video, I'm a bit more confident I can troubleshoot some more issues if they arise.
So an update: after putting the boat in the water with that Mercury attached, after multiple turns I started it on a choke, had it on it for about two minutes after which I pushed it back in. That's when the motor died and couldn't be restarted. Tried for about 10 minutes, gave up and swapped with my trusted 7.5 Honda 4-cycle that I brought as a backup. While on choke Mercury was shaking pretty bad, smoking and even releasing some oil into lake, which made me even more encouraged to put it back on the truck. All in all, I'll be troubleshooting it in the upcoming weeks to see if maybe it has to do with those two plates that are supposed to close and maybe are not closing completely, or maybe throttle isn't adjusted properly.
Adventure__Pete did you ever find out what the problem was? I have a similar mercury and can’t seem to get it to start 👎
I'd check the spark plugs first. Sounds like it was only firing on one. Oil in the water on a two stroke is unburned fuel as they don't have crank oil to leak.
Could be compression, electrical or just a fouled plug. I hope it's the plug and I bet it's the lower one. Clark
@@EmilyAndClark, so actually I have it on a boat anchored on the lake right now and learned how to work it. I start it on a choke, and immediately put it in gear, throttle up, push the choke in and it works fairly smoothly. But yeah, I will have to do all those checks next time I get her out of the water. She might need new bottom paint soon too..
Oh. With that procedure working it seems like your low speed fuel circuit in the carb is gummed up. Take it apart and clean it thoroughly paying special attention to the needle valve and area around it.
Baring that if you just back out the needle valve you should see some improvement.
Good luck.
Sorry I didn't notice your first comment. UA-cam sometimes doesn't show me comments.
Thanks so much for this - very clear and concise and not as complicated as it looks! I'm interested in what you mentioned about changing carburetors to effectively go from 8Hp to 10Hp. I have a Yamaha, 8hp 4-stroke - Do you happen to know if it is possible to replace the original 8Hp carburetor with the larger 9.9hp carburetor? Could definitely use the extra oomph and love the idea of having a spare carburetor around if ever needed. Cheers!
Looks like they are also the same motors. Big hint is they have the same displacement and are described in the same section of the website.
I've never had the two both apart at the same time but I'd bet money the bigger carb will fit and function.
Also I like the Yamaha. Don't see many as they work without problems. Clean design, easy to work on. I like that their carb has an accelerator pump. Not necessarily but nice touch. Tells me they probably don't cut corners in other places.
Might have been a larger motor I'm thinking of, but I like Yamaha. I ride a Yamaha when I'm on land.
@@EmilyAndClark Awesome! I'm really excited toggle it a try. Will send an update to let you know how it works!
Looking forward to hearing the feedback.
Good job! 🛠
Good video but you put the float back in upside down. I disassembled the same carb and almost put the float back in like you did. Look at the first of your bowl removal and you'll see the float was in the other way. There is some grenish color on the float from the brass part of the float.
Did I?
I'll have to look once we get to fast internet again.
It worked fine afterwards, so maybe it doesn't matter much.
@@EmilyAndClark i agree the float looks upside down
Thank you for a nice video, I like it
I may be speaking out of line here but I wouldn't be doing this over water. What happens if you drop a tool?
You just can't drop anything. Slow and careful.
Mercury 2 strokes 👍👍
A very common problem in the fuel system is the priming ball.
It sounds like you're well advised to get familiar with your outboard, especially the carb and fuel system as they seem to be very vulnerable to crap in the engine.
Yes. I just switched to a fuel injected motor. Third year and absolutely trouble free!
@@EmilyAndClark Wow Clark, that's the way forward!
The new ones don't require a battery. Take a look at my oil change video on it. I really like the Suzuki offerings. You simply can't believe how easy and reliably it starts.
Ethanol in the fuel makes the needle valve seat (usually some rubber-like compound) swell and restricts free movement of that needle valve. Best practice is to order a carb rebuild kit (pretty cheap, usually) and it will have a replacement needle valve and seat (among all the other gaskets and rings). Cleaning it on the deck of your boat is only a short term fix. But, great video. Thanks!
How do you handle medical insurance? How does insurance work in 2 countries. Medical insurance gets more expensive every year. How does this affect your spending? Clark is in his 50s now so I would think he has to have insurance.
Video on that coming. Make sure you subscribe and push the bell. UA-cam is making a change to their algorithm and pushing the bell is becoming important.
What year and hp is that engine. I have a 1993 9.9 Merc with pretty much the same symptoms. Starts fine, idles fine and gets on plane but can get me where I want to go. Once I start slowing down to idle , it will shut off on its own and will not start. After fishing for an hour or so and using my trolling mtr. then it will start and get me back. But the boat has to sit for a while before trying to start it.
Sounds like a very different symptom to me. Make sure yours isn't overheating. If it is a have an easy solution for that.
@@EmilyAndClark I only ran it twice last year when i first got it. Water pump worked great, good pressure. Someone else said possible coil(s). I was told that after running and it would not start, pull plugs, ground, pull start rope, if you see yellow spark, coil may not be putting out needed voltage to fire off plugs. Dunno. 2 cycle is german to me. Any help is appreciated. Even though this engine is 30 yrs old, it looks pretty well new and used very little.
Well run it a while and then touch the head. If it's over 160f it's overheating.
It can pump water and still overheat.
I don't know it that's your problem. I have no information to go on, but it could be. Easy test.
just got a motor just like that that came up on my crab trap even had the gas tank the vent was closed so the gas was still good almost got it running i may take the carb off it may be full of water .
Wow. What a catch!
Yes get that carb apart. Rinse everything in fresh water. The carb will corrode inside in a few days if not opened and cleaned out. Also the wiring will eventually corrode if not cleaned. Inside of motor is tougher but needs to be rinsed and run to coat everything with oil before issues start.
In short you are on a clock with this find.
Well done good sir.
Thanks
I just bought a 1983 Mercury 50 2 stroke it was running perfect went to leave left it idling and it died and won't crank. When I squeeze the primer it's firm but I'll squeeze it really hard it spray's gas out carb? It will crank for a second but don't stay running?? What do I do?
No worries. You have a bit of gunge in the floats needle valve. Fuel is too high in the bowl so it's running too rich. Just take the carb off and clean it up. The video will help. It's the opposite problem this engine had but it's common. You can hear me talking about it when I'm diagnosing. You will find that the needle just needs a cleaning so it will seal again and you will be good to go. Worst case is you will need a new needle valve and maybe seals as it's an older model and things can deteriorate with time.
I forget does that year 50 have one carb or two?
I'd take some time to make sure the tank and lines are clean. If it's been a while since she has run there is likely crap in there that will do this again.
If this works for you how about buying us a beer on Patreon?
Thanks mates :-) Darn good instruction
Thanks Frank.
Did you get a motor going?
@@EmilyAndClark Yes mates/maties: It was the damn stop button - the kill switch fell of. I thought it wouldnt start because i forgot to turn on the air vent to the intern tank (Mariner 4 hp Sailmate).
I discovered that the connection for the ekstern tank was not connected to anything - fuel went out in the motorcaseing ....? Why put on connetor to ekstern tank if there isent any connection.
Thanks to the Fab. instruction i checked the startplug (placed under a metalbridge...holding the intern tank).
Motor sits on my Westerly GK24 (the only one i Denmark..?) and impossible to work on it there.
Okay - when i found ot that my problem was related (remembering your wise and gentle words) to the kill-switch - the whole rubber thing fell of...Now my problem was to stop the engine - closed the air-vent on tank (keept on running..) - then i placed it on the stop the current-thing and i stopped...
Again - thanks for the Fab. video and instructions - keep on the good work and take care - out there...
Kind regards from Frank (shiptown = middelname in english) Jensen
Thanks for writing back Frank.
You might find you can kill the engine with the choke. But best to replace the kill switch.
Would you consider sharing our playlist on social media? We would really appreciate the new viewers and your friends might find videos they like.
I have been told that Mercury's two strokes are known to be hard to start especially the older ones. Do you agree? Up here in Minnesota, we have as you know many lakes and rivers. Mercury outboards are very popular
I've never owned a Merc myself but the old ones seem like fine engines. Always got them going when I worked on one. I was an OMC guy back then.
It's just the modern company I have issues with. They seem to just be a marketing front for their former selves. They do a lot of package deals on new boats. Seems a bit shady to me. Kinda like when Sears started making Craftsman tools in China. Just selling out their former name selling a lesser product to people who don't know the difference. Not really an honorable thing to do but profitable for a while.
I just bought a Suzuki fuel injection and really like it. Only a year in but best motor I've ever used. And we use it daily in the ocean!
Evinrude made a 10 & 15hp that were identical except for a set-screw on a stop. Remove set screw turn your 10 into 15hp, Cool!
Did the set screw keep the throttle plate from opening all the way?
@@EmilyAndClark "yes" set screw was rev limiter so ten up didn't turn into 15, haha! That funny some think that way! Look close through throttle stops an see if anything is keeping it from full open!
Tim,
If you think your friends might also like our videos, how about sharing one of our playlists on social media. We would really appreciate the new viewers.
Hello, I know it’s been several months since this video but I am looking for some help. I have a 2006 Johnson 90 hp saltwater edition v4 2stroke. I have recently rebuilt all 4 carbs and cleaned both throttle bodies. Before I even began the cleaning and rebuild I pumped the primer bulb and it had some resistance but never got tight tight. Continued pumping bulb and fuel and oil mixture came out lower unit and prop. What could cause this? Thanks
In one of your carbs the needle valve is not closing properly. Take it out and clean it well. Before putting it back on check it. Always do this. See my 4 stroke repair video as I go into this procedure better.
@@EmilyAndClark thanks. I just rebuilt all 4 carbs with new seats, floats and needles. Could it be a float not adjusted properly letting the new needles seat properly? Or maybe the primer diaphragm or main diaphragm from fuel pump letting fuel pass through? Thanks
So hard to diagnose from comments. I assume that didn't fix it.
Yes if your float doesn't float (has gas inside it) this could cause this. Doesn't happen much anymore with plastic floats.
Did you do the blow in the carb trick to verify the valves were seating?
To guess further I'd like to know exactly where the fuel is leaving the fuel system. I assumed it was running down the shaft before.
Is it actually coming out if the exhaust?
Just wanted to let everyone know that I found a hack in case you ever lose a check ball or find it missing like I did. Instead of purchasing a $138 kit all you need to do is take a grease fitting, one that fits a typical grease gun, use a hack saw to cut it open and voila! A new check ball that mates perfectly with the spring and seal in the primer/injector (float bowl housing). After installing the new grease fitting check ball, spring and 11mm 'bolt' my crappy running 9.9 now runs like new and it cost me nothing!
That's one happy Dan! Reading though the comments I'm guessing my 1998 Mercury 9.9 2-stroke is a Tohatsu product? It idle's rough but runs great at top speed. The main issue is it doesn't accelerate smoothly, stutters like a misfire right up until it reaches the upper RPM ranges. All primary and secondary ignition components were replaced before I bought it. As well the float was filled with fuel so they replaced it with an aftermarket part that very closely matched height wise but not exact. Would that small difference be the likely cause of symptoms described above? Poor low end performance, lack of smooth acceleration? Other than that the thing works like a champ for our fishing expeditions on the lake!
Well sounds like it's running lean.
Yes if the float is floating at the wrong fuel height that would cause what you see. Probably can be adjusted by bending something or adding weight. You could run a test with some pennies taped on but if it works hot glue them as the tape won't last but a few minutes in the gas.
But first I'd make sure the needle valve is set right and the low speed passages are really clean.
You should watch my 4 stroke video. I talk about the carb better there. Same basic thing.
ua-cam.com/video/5dRoPLzYpYc/v-deo.html
@@EmilyAndClark Will do, thanks so much for taking time from your day to respond!
Watch til the very end. The last tip I give could also cause your symptom.
@@EmilyAndClark On the fuel bowl housing when I removed the 11mm screw the tiny spring was there but I noticed there's no ball inside like it shows on the carb parts schematics I found online. It was definitely apart before I bought it so could that be the culprit? Primer injector parts, not sure what that circuit is called or function.
dig it the most great job bro
Are you working on an engine?
@@EmilyAndClark Yes. Actually I am working on several.
Hope this helped.
Funny story. Dan (the guy in the video) had another problem with bad fuel. Got help from someone. The helper pulled out a phone and chose this video as a reference, Dan heard his own voice and realized that the helper was watching this video on his very engine!
good video, 4 strokes are the best for longevity/ reliability and the air is so much cleaner without annoying/sickening 2 stroke fumes, i was thinking the whole video i would hate to drop something youd need one powerful magnet and a long rope and a lot of luck.
4 stroke chainsaws exist there just not very popular mculloch made some and the German store Aldis sold 4 stroke chainsaws aswell , i see sthil has a fuel injected 2 stroke chainsaw not cheap though.
i personally want an electric motor , i remember jamie on mythbusters building an impressive dc outboard motor.
If you go electric I've got the boat for you. It's called that aqua naught. We did a video on one but for now it's only in our Patreon section. I think it's the perfect dinghy for an electric motor.
My outboard will start idle and accelerate if you pull on the carb. But if you use the twist throttle it dies
can anybody tell me how that blue button works? is it a primer? how does it work?
I'm not sure what you mean by blue button. It's been over a year since I've seen this motor in person. Could you tell me more and maybe give a time code to where it's easy to see in the video.
Hello sir. I have a 40hp mercury 2stroke. I hope you can help me with the problem I'm having. The motor starts fine, but only goes about 5mile and hour. So, half way up the lake, I will stop the boat idle the motor high for about 2min, put it in gear and runs like it is suppose to. What could be my problem?
Consistently?
You say it only goes 5 mph. What happens when you try to go faster?
@@EmilyAndClark yes. 5miles is when it's full throttle. Then I will idle the motor at top RPM for about 2min. Give it full throttle and it takes off normal
Can't tell from that description.
@@EmilyAndClark I know. Kind of hard to explain. It seem as if it's running off one cylinder. I have it at full throttle and only going turtle speed, then I will idle the motor to its top RPM, idle it back down, and the motor starts running good.
Don't have any problem with the motor cranking.
Hi I have a yr 2000 /150hp/2 stroke engine. I need to replace my tilt motor. OEM part is $400 and after market at Amazon is $80.
You think it's okay to use after market for tilt motor.
Looks like even OEM is made in China.
Thanks
Yeah,. I imagine it's the same part. I buy things like that all the time. It might be a unit that failed inspection but probably not and it's just fine.
Have you taken down the old unit. An electric motor is easy to rebuild. Even if it needs rewinding there are motor shops around but for $80 it's probably not worth more then taking it apart yourself and cleaning up the brushes and commutator. Or is it physically broken? -C
@@EmilyAndClark
I found a big hole behind the motor and it was all rusted out.
I bought the 18cc from someone during summer and never saw the hole behind the tilt motor.
If its rusted out ..damm.
That hole probably started more then 5 yrs.
Funny thing is tilt was working when I got the boat..
Ouch. Well it's nice to have a friend in China. Thanks eBay/Amazon.
Sorry, never been to China. Actually I am from USA..lol
No just meant that we are lucky to live in a time when we can buy things from the manufacturer more directly
A Merc dealer told me all the smaller Mers were coming off the Tohotsu line, same engine he said.
Yep. But they have these add-ons that make them a pain in the ass to work on and tend to fail. Usually shifting parts. It's just do obvious that they were an afterthought. Just get the Tahatsu. Or better yet get a better motor for less and look at the fuel injected Suzuki. I'm really liking mine!
Really clear diagnosis stage, bang on. Quick question, have you ever dropped a part or fastening over the side?
Thanks Richard.
Only once I can remember. And no I couldn't find it. I had to fabricate a new part out of materials I had on hand.
Now I'm extra careful.
can anyone help me out regarding two stroke (non-efi) 90hp outboard motor service manual or something?
Tell us what's wrong. Describe the problem.
It will be like this engine but larger. It might have multiple carborators but essentially the same procedure.
do you have problems with having that motor in salt water?
Not really. In fact I leave them down and rely on the zinc. I think I get more corrosion when I mount it on the yacht for voyages.
Would you recommend Mercury?
Yeah, they are my favorite!
Alright, hoping someone can point me in the right direction. Clearly I'm a large idiot and did not do proper research before taking my Dad's Boat out...
He has a Yamaha 15 two stroke motor. (Yes, I realized two stroke are not good, I'm learning.lol)
So, this idiot of a mistake is so bad, that it doesn't seem to be a common mistake, because I find no real information on it..
I used ONLY Gasoline in the motor. It clearly states 100/1 on the motor. I accept my ignorance and only want possible direction on what I can do. What's done is done, and just as life, it's a learning game, and I am just learning about this boat and Motor.
Either way, there we a Little bit of gasoline/oil mix in the gas tank. Barely anything. I filled it back up with regular unleaded gasoline. 😔. I rode the boat motor about an hour and a half, not exactly consistently. Over about a four hour period. It would be a tackle to get running, but once started, ran what seemed well. Ran for maybe 20 mins each time, then stopped to fish, and cut it off.
... never could get it to start again after the last time I cut it off. Damage must have been done.
I'm curious if anyone knows of any steps I can do to see what all is actually damaged, if anything can be repaired, etc.. any help.
I'm already in the thought to that the motor is done.
I have not tried to run it since I came back. I don't know if I should create the mixture and try to run it w/ 100/1 or if I should drain the motor, add more oil than recommended.. or what.
Any advice, comments, help and ridicule are accepted. :)
I hope you get other advice here but since this is an older video without much traffic anymore I'll put my 2 cents in.
First off running without oil just causes more ware. ie. No oil = higher friction. Don't double oil it now or anything, as you say the damage is done.
What was the history of the motor? If it was hard starting before it might have others issues. That one way valve I talk about causes starting issues. Since it's so easy I'd clean the carb first because it's so easy and low risk. You might have just got some gunge in it from what was in the old tank. Likely if the motor hadn't been run in a while. Just do what I did in the video first. If it runs with squirting fuel you can breath easy and just clean the carb.
But to the possible bigger problem. First off running without oil causes ware and heat. The ware is permanent but the heat goes away. So, check it and see if it starts better now. I don't think you should destroy a motor in just an hour. Though you took years off its life. If it didn't get better on its own I'd want to check the compression. If it's low you need a ring job. Not the end of the world. The hardest part is getting the motor apart without breaking corroded bolts. Go slow and unscrew a bit then screw back in till they feel free.
All in all it's not destroyed I'm sure. These are tough machines.
@@EmilyAndClark wear
You didn't check the fuel filter. This is a common issue that can save a lot of hassle. Definitely check the filter before pulling the engine apart.
Fuel filter is a slightly different symptom. This engine ran well at all power levels and just died. Fuel filter problems start showing as loss of power after prolonged high power operation and can be temporarily improved by squeezing the bulb.
daddy yesh
Why not check the fuel filter first?
Because that has a different symptom when it fails. It tends to run fine for a while and fail at full throttle. Also the bulb feels different when it's the problem.
It not getting gas to the carburetor
I get the impression you aren't too fond of Mercury. There are a lot of people out there that like them.
Mercury no longer makes small motors. They are Tahatsus that cost more and have additions that fail a lot and make them hard to work on.
Why not just buy the Tahatsu. Or better yet the new Suzuki fuel injection motors. Even better.
so what was the problem?
Watch the video.