This guy knows his shit! I thought this lawnmower I’ve been working on was out of time because it was starting hard and the rope would snap back on me about every 3-4 pulls. I’m glad I watched this guy so I can get this lawnmower running right and out of my garage and back to the owner! I just got done putting the new keyway in this craftsman lawnmower and it started on the first pull and ran just beautiful! Thanks alot Bruce! You’re alright man!
Just put the new keyway in and she started on the first pull and ran just beautiful! Thanks alot Bruce! You will be my “go to guy” the next time I’m struggling to fix a small engine.
Bruce, I can't thank you enough for this video. My rototiller just about broke my arm last time I tried to start it. Now I can't wait to take it apart and look for the broken key! You saved me-THANK YOU!!!
I just serviced our mower. That is good info Bruce thanks for posting. Have some catching up to do been working in Zurich so doing 3 or 4 hours driving a day. But I got 4 days at home now ;-) Good to have no parts left lol. Sounds sweet now sir. Dave
Thank you, Mr. Pender. Using your tip concerning flywheel removal, I was able to rob one mower to fix another. Also, using what I've learned from you, doublewide6, Steve's Small Engine Saloon, and Foxboss9, I have landed 2 part time jobs doing small engine repair and tuning. I've learned from others, but yours, Steve's, doublewide6, and Foxboss9 have been the best. Consistent, on-track/on-topic, well-illustrated, clearly explained without condescension, and no distracting soundtrack.
Hi Bruce What a great tutor you are . Thanks for the tips . So many people today are more likely to throw away rather than take to the time to lean and repair. Well done mate.
Hey Bruce!! Thanks for the help!! I'm going to pull it apart today!! I'm a rookie at this kind of repair, so wish me luck!! Great Video!! Thanks again!! RS
Very informative, thank you. I took lawn mower repair classes in high school, and repaired a couple like this, and sanded parts, And repaired strings, it was nice to have a running motor at the end of the repair, Its has been lots of years since I did that, it was good to watch this video, a good refresher!
Bruce, you just saved me from another wasted weekend of mower madness. Couldn't figure out what was going on until I found your tutorial by searching for "snaps back". Fifteen minutes, an impact drill, crowbar, and a $1.50 flywheel key is all it took. And it started on the first pull! I'm back in business. Molsons for everyone!
One of the easiest going people on UA-cam, knows his stuff and has helped me solve numerous problems in my mower repair work( I was a trucker for 44 years, some health issues and early retirement so I took to mower repair as a hobby and it evolved to a little side hustle😜) . Like I said Bruce has helped me out through his videos numerous times, for which I am in his debt. 👍😜🇮🇪
Mr. Pender after getting wacked by the pull cord handle ... a BIG ouch ... as you mentioned is rather dangerous ... your repair know how has given me the courage to attempt the repair myself ... thanks ... keep up the fine job Dude !!!!!
Good video and good repair Bruce. I ripped you pretty bad on a riding mower deck rebuild but I have nothing but good things to say about this repair. I was given a mower with the same issue a few yrs. ago. I told the lady that it was more than likely just a flywheel key and I could fix it for next to nothing but she had already purchased a new mower and said "take it" I repaired it and sold it to an older gentleman very cheap.
Thank you Mr. Pender! Same here, you saved me tossing a perfectly good mower and paying hundreds for a new one. Old Toro with Tecumseh 6.5. Slammed the blade into an iron hammock stand. Tried to start, got the severe kickback. Google turned up your video. All worked out exactly as you described. I was a little unsure how to get the flywheel off, feared I would break the cast aluminum wheel. I wound up rapping it with a rubber mallet and it popped loose. I had to tap a little nail in behind the broken key piece to knock it out of the shaft. Only other problem was having to wait 10 days for the local mower shop to get the flywheel key in. Cost $2.22. Upon repair as you instructed, the mower started right up as usual. So thanks again for taking the time to make your video!
Don’t be afraid afraid to apply pressure with a prybar under the fly wheel on top of the keys you don’t have to use a ton of pressure just enough up force and then crack it either with a rubber mallet as you stated you did or put the starter cup key back on top of the fly wheel shaft or crankshaft which ever you prefer to call it run it down flush to the top of the shaft and when you tap it you just need to give it a nice solid tap as he did with the piece of wood on top of his shaft and it should pop right up or you can use a thicker chisel And tap it under but do you have a possibility of Nicking the aluminum casing, Just pray like Mr. panda showed you slide up for a good tap on top of the shaft make sure you’re not mushrooming the top if you have the nut on it protects the top from mushroom if you don’t hit it squarely
Great video! I wasn’t exactly sure why my mower was pulling back and I never would’ve though about the flywheel key! It’s a Toro GTS with the 6.5 HP Tecumseh. And sure enough after I opened it up it was shredded! Popped a new one in and the thing fired right up!
Lol I was fixing an old tecumseh mower for someone and I remember this was the issue. I found that out when my arm just about got ripped off! Came across this video and it made me laugh. Thanks.
Thank you Bruce! I don't know much about motors, and mechanical stuff, so you explaining and show your tips is greatly appreciated. This was exactly the issue with my mower, and I managed to fix it by my self after I saw your video. Again thank you Mr Handyman ; )
Worked like a charm! Separated the flywheel as shown in the video. Replaced the key, cleaned the mower up a bit, new oil, plug , gas & a shot of WD-40 into the cylinder & gas tank. Couple of pulls later, mower ran like new! OBTW - Tecumseh motor parts are becoming scarce, will have to buy a new air filter on-line, but was able to locate a flywheel key locally... waz
Thank you Bruce, very neat shop and super pleasant to watch your work. My 25 hp Nissan outboard it breaking my hand of snaps back hard. I ll check the key if broken.
I had to laugh at the end when you brought the oil burner outside but kept the exhaust blowing into your shop. Other than that, it was a great video. Keep up the good work. Subscribed.
Thanks for this video I was going to get rid of my mower due to kick back was able to fix it starts on the first pull and purrs like a kitten thanks to your video!!
Oh wow thats awesome man! Thats pretty cool the way you fixed it and knew your stuff. Im having a problem putting on a brand new pull coil. Awesome work
Bruce, thank you for a most brilliant tutorial on the snap back problem. Your photography, clear concise directions, and a good bit of your humor make it a real gift to all of us in youtube land. I have a 1960's sears lightning chainsaw that snaps back.The problem is most noticable after i choke the engine to start it. I will first check the flywheel key. Can the problem be that its getting to much fuel, cause the carburetor needs work? Thanks again and god bless. Bruce the swimmer New Rochelle N.Y.
Learn something every time I watch your posts. Thanks for taking the time to post such interesting cases. Where did you get such a nice and helpful hoist/lift?
Hi Bruce. Another issue can be the rotor base plate if that’s what is fitted. ( common in Australia ) . If the base plate isn’t torqued on adequately, sometime 60 NM, it may slip. The base rotor In some motors IS the flywheel in the truest sense of the word. It’s stores energy via angular momentum. ( remember is spins at 30 times per second at 1800 rpm! ) anyway , a slipping baseplate , or no base plate , will mean the motor is really difficult to turn over. If the motor runs it will back fire etc. I know all this from bitter experience with my tecumseh ULT50. Ps love your videos! Keep up the good work
Well I use a impact wrench so mine will never slip. I tighten them to much. I manually check to see if the piston is almost at TDC when the coil is near the magnets. (manual advance timing)
I injured my arm twice badly while starting lawn mower after replacing all gaskets, spark module and carburetor. wondered why this is happening, time to check this key out. Thanks for the video
You do nice work. I pop off the flywheel the same way with a hammer, but I think if I was doing an instructional video, I would go by the book and use a puller so that way if some idiot busts up their engine, they won't blame me for it. Otherwise, thanks for taking the time out for making the videos. :)
Hey Bruce. Had a a hard time getting the flywheel off as I didn't have a puller. The key seemed to be a permanent part of the shaft and appeared not to be out of place. I cleaned everything and removed some rust from the contacts. The mower started on the second pull with no kick back. I really don't know what I fixed but I guess the cleaning did it. Thanks again for your help. RS
good video, explains why my engine is jerking my hand off. suggestion - move your lawnmower stand (it has wheels) closer to your work bench and tools to save some steps back and forth.
Great video, after years of repairing small engines I would only add one critique. Before removing the top end you should disconnect the spark and pull the rope and observe the blade and rotation of the crankshaft for loose bade or warped shaft and then proceed to the flywheel key
You are right. I don't film everything i see. As every video would be 2 hours long. But you are right, Thank yo, that is how I check for bent cranks as well.
yo, dude, I put a 173 Predator as as replacement for an old engine. Today, I thought I would split some wood on the log splitter... Two pulls later, the whiplash from the starter rope, I thought I had broken two fingers!!!!!!!! After seeing your informative video, it is time to see if that is the problem...thanks, eagle-san in colorado
Hey Bruce, thanks for explaining this issue. My old Quantum 4hp (bought it at K-Mart!) has been doing the cord snap for a few seasons and it seems to have got a little worse over time. Now that my boys are using the mower I can see that it's a little dangerous. Time to fix it!
Bruce Pender Hey thanks a bunch for taking the time to show this stuff. My flywheel took a few whacks on the wood block, then popped right off. This fix worked great, no snap-back & more power! Parts under $5 for key & carb gasket. Kids start with one pull. You're saving me $$$ & headaches!
Hey Bruce. It is a Tecumseh 6.5 hp Yard works!, Just started it again and is running like a Top. No kickback, but I'm still cautious when I pull that rope!! Thanks. RS
Hi Bruce, Thank you for another FANTASTIC video. If the woodruff key isn't tapered, and isn't square, how does one determine the orientation of the offset (when the keys are offset) ??? [for the other viewers, many woodruff keys are square, (looking from the top down, but long) and it doesn't matter] under the conditions which you have presented, the key is offset, and sometimes it ISN'T tapered. Is there any 'trick' or advice that would determine the orientation of the key ? Thank you Bruce, for all of you FANTASTIC information. You are a great bunch of knowledge.
I just watched Donyboy73 do one of these and the key is straight. I have done them too but this one just came to mind. here ua-cam.com/video/FwBMBRk852M/v-deo.html
Bruce thanks for the video I have exactly the same lawnmower with same problem. But, I can’t get it started after changing the pin. It looks like I’m not getting any sparks. Do have any suggestions
You have a real neat and tidy shop there Bruce , wish my garage was so tidy , is that a record #6 vise that is bolted to the work shop bench ? If so thats a real nice vise . keep up the good work.
I just learned something here watching this. The key must match the slot. I had my 7hp mower doing this too and I had it apart down to the flywheel but I didn't know what to look for, now I do. I just took my mower to a guy in the next town over from me because he fixes small engines. I wish I didn't now but he is reasonable. If I had known this I would have jumped on amazon for a flywheel key set. Not sure which one my mower takes or are they standard?
@Bruce Pender i have a predator engine it backfires when pulled and turns on but revs really really high the governor was taken out any thoughts on what it could be?
Well there is something igniting the fuel when the piston is before top dead centre. It could be a leaking intake valve. You can take the valve inspection plate of and check to see if you have enough valve clearance on the valves. 6:45 into this video ua-cam.com/video/coZfgnII-hc/v-deo.html
On old engines that have points, shearing the key causes the engine to be totally dead because the point timing is correct, but the magnet timing is early, leading to no spark.
I have a massive whip mark across my chest after trying to start this hayter with a briggs on bloody thing 😂 hope it this will have a look in the morning
What is actually moving as far as the crank or engine when you rap it with the block as you pop the flywheel off. My lawn mower is running really bad, and almost tore my wrist off after kicking back. It tore the rope in half again.. I thought it may be the lightened blade after years of sharpening the edge maybe being too light. Thanks for pointing the real culprit. Over a time i must have stopped the blade on something maybe 4 times. Thanks for the video. Frank
I understand this is a common problem with tecumseh motors. Is it also common on Honda's? I just had one rip the handle right out of my hand several times. It would run and sputter a few times when it did start. I also don't have a blade attached. Will this have a significant impact on the engine firing too early?
This link is for a Briggs The video was a Tecumseh. Similar but different. www.amazon.com/Briggs-Stratton-Flywheel-Key-5002K/dp/B00004RB14/ref=sr_1_1?keywords=Briggs+%26+Stratton+Flywheel+Key+5002K&qid=1556038217&s=gateway&sr=8-1
Bruce I have a Sears tiller takes your arm off pulling on the rope .I checked the key way and it is good the fly well is steel about 10 or 12 years old could the valves need adjusting and can you a just them. Sam thanks
What type of motor is it. If it is a flathead (valves in the block you can remove the head and shave a bit off the valve) If is overhead valve (aluminium valve cover) You can adjust the valves easily.
Love the safety crocks you're wearing! lol...I'm bad about not protecting my toes and was wondering...have you ever been bitten by the Murphys Law where anything you drop will hit your toe and send you into a (delete explative or) cursing rant? Been there done that but I have yet to learn my lesson. lol Always enjoy catching up on your older videos my good Friend! Cheers!! Zip~
Are all flywheel keys basically the same in all mowers?? I have the same problem with my 6.5 hp Yard-Works mower!! Almost broke my hand the other day!! Thanks RS
+Ron Scott No Basically Briggs and Stratton are different than the Tecumseh. If it is a Tecumseh the flywheel keys are not "square". The Briggs are a rectangle shape. You should be able to see the make of the motor by looking closely at the engine. The disassembly is almost identical for both.
I would have a real close look at the key. Even though they look fine, When you remove them there may is just a deformation on it----------- this can cause the kickback.
Good info. I tried this but my key was fine. Ended up starting it with my drill while the pull cord was off. Fired up after a couple of attempts. Guess it just sat up too long.
Hey Bruce, I checked for the fly wheel key and its intact on my mower. So what else could be causing the problem with the rope snapping back? Thank you.
Hi Bruce, I was given a Weed eater lawn mower with a 5 hp Briggs engine. Its the newer style Briggs you see on pressure washer and a few different lawnmowers. It was given to me after it hit something because off the terrible kickback. First thing I checked was the flywheel key. It looked ok but I changed it anyway. Put it back together and it still has bed kickback. Any ideas on what else to check?
I've got a Cub Cadet 173 push mower spray starting fluid to to start it it jerks the Rope out of your hand real bad and it won't stay running I'm going to have to pull the flywheel off and see if the keys broke appreciate the video
Yes they do. My impact is a weak one so I just tighten them up. Yes everything on a mower has a torque value. If it is motor related I use the specs. Thank for the comment You are correct in asking. 450 inch lbs for some up to 600 inch lbs. 37.5 foot lbs for 450 inch lbs
This guy knows his shit! I thought this lawnmower I’ve been working on was out of time because it was starting hard and the rope would snap back on me about every 3-4 pulls. I’m glad I watched this guy so I can get this lawnmower running right and out of my garage and back to the owner! I just got done putting the new keyway in this craftsman lawnmower and it started on the first pull and ran just beautiful! Thanks alot Bruce! You’re alright man!
Just put the new keyway in and she started on the first pull and ran just beautiful! Thanks alot Bruce! You will be my “go to guy” the next time I’m struggling to fix a small engine.
@@jameshanna4748 You are welcome.
Bruce, I can't thank you enough for this video. My rototiller just about broke my arm last time I tried to start it. Now I can't wait to take it apart and look for the broken key! You saved me-THANK YOU!!!
Five years later 2019 and your video is still helping! Thank you!
That is great Thanks
I just serviced our mower. That is good info Bruce thanks for posting. Have some catching up to do been working in Zurich so doing 3 or 4 hours driving a day. But I got 4 days at home now ;-) Good to have no parts left lol.
Sounds sweet now sir.
Dave
Thank you, Mr. Pender. Using your tip concerning flywheel removal, I was able to rob one mower to fix another. Also, using what I've learned from you, doublewide6, Steve's Small Engine Saloon, and Foxboss9, I have landed 2 part time jobs doing small engine repair and tuning. I've learned from others, but yours, Steve's, doublewide6, and Foxboss9 have been the best. Consistent, on-track/on-topic, well-illustrated, clearly explained without condescension, and no distracting soundtrack.
That is awesome. Congrats
Hi Bruce What a great tutor you are . Thanks for the tips . So many people today are more likely to throw away rather than take to the time to lean and repair. Well done mate.
+kevin twohig Thanks a lot Kevin
Hey Bruce!! Thanks for the help!! I'm going to pull it apart today!! I'm a rookie at this kind of repair, so wish me luck!! Great Video!! Thanks again!! RS
+Ron Scott Let me know how you make out.
November 2020 and this guy saved me from buying a new mower. Huge thanks 🙏
This video is 6 years old. that is too cool it helped you out. So happy you fixed it.
Very informative, thank you. I took lawn mower repair classes in high school, and repaired a couple like this, and sanded parts, And repaired strings, it was nice to have a running motor at the end of the repair, Its has been lots of years since I did that, it was good to watch this video, a good refresher!
Scott Castille Thanks for watching
Took a look at the fly wheel key on mine and theres nothing wrong with but it kicks back like a demon still
@Westley Ty @0 minutes is not bad. I can spend hours on a trouble. god for you. Congrats.
Great video sir! I’m sure you’ve helped hundreds of people with this video - you helped me.
Yes this has been a good video.
Bruce, you just saved me from another wasted weekend of mower madness. Couldn't figure out what was going on until I found your tutorial by searching for "snaps back". Fifteen minutes, an impact drill, crowbar, and a $1.50 flywheel key is all it took. And it started on the first pull! I'm back in business. Molsons for everyone!
Thanks nice to have a beer after a tough day
One of the easiest going people on UA-cam, knows his stuff and has helped me solve numerous problems in my mower repair work( I was a trucker for 44 years, some health issues and early retirement so I took to mower repair as a hobby and it evolved to a little side hustle😜) . Like I said Bruce has helped me out through his videos numerous times, for which I am in his debt. 👍😜🇮🇪
Thanks for the kind words Brian.
Mr. Pender after getting wacked by the pull cord handle ... a BIG ouch ... as you mentioned is rather dangerous ... your repair know how has given me the courage to attempt the repair myself ... thanks ... keep up the fine job Dude !!!!!
You are welcome sir. Thanks for watching.
We’re can I buy the key or shear pin you called it?
Excellent! Thanks for your common sense approach to this all too often problem. Keep up the good work!
Thanks to you for being kind and pleasant.
Good video and good repair Bruce. I ripped you pretty bad on a riding mower deck rebuild but I have nothing but good things to say about this repair. I was given a mower with the same issue a few yrs. ago. I told the lady that it was more than likely just a flywheel key and I could fix it for next to nothing but she had already purchased a new mower and said "take it" I repaired it and sold it to an older gentleman very cheap.
Thanks Jerry
Thanks for the informative videos that you and Donyboy73 share with the community. It save people a lot of time and money.
Jerry Dineen Wow thanks a lot.
Looks like you are doing 2 stroke stuff. Good for you. They re challenging.
Thank you Mr. Pender! Same here, you saved me tossing a perfectly good mower and paying hundreds for a new one. Old Toro with Tecumseh 6.5. Slammed the blade into an iron hammock stand. Tried to start, got the severe kickback. Google turned up your video. All worked out exactly as you described. I was a little unsure how to get the flywheel off, feared I would break the cast aluminum wheel. I wound up rapping it with a rubber mallet and it popped loose. I had to tap a little nail in behind the broken key piece to knock it out of the shaft. Only other problem was having to wait 10 days for the local mower shop to get the flywheel key in. Cost $2.22. Upon repair as you instructed, the mower started right up as usual. So thanks again for taking the time to make your video!
Well that is nice. Thanks for taking the time for responding and you made my day
Don’t be afraid afraid to apply pressure with a prybar under the fly wheel on top of the keys you don’t have to use a ton of pressure just enough up force and then crack it either with a rubber mallet as you stated you did or put the starter cup key back on top of the fly wheel shaft or crankshaft which ever you prefer to call it run it down flush to the top of the shaft and when you tap it you just need to give it a nice solid tap as he did with the piece of wood on top of his shaft and it should pop right up or you can use a thicker chisel And tap it under but do you have a possibility of Nicking the aluminum casing, Just pray like Mr. panda showed you slide up for a good tap on top of the shaft make sure you’re not mushrooming the top if you have the nut on it protects the top from mushroom if you don’t hit it squarely
Thank you I’ve been watching your vids and I now have a working lawn mower
That is great !!!!!
Great video! I wasn’t exactly sure why my mower was pulling back and I never would’ve though about the flywheel key! It’s a Toro GTS with the 6.5 HP Tecumseh. And sure enough after I opened it up it was shredded! Popped a new one in and the thing fired right up!
You made my day Thanks for watching.
great presentation. good closeups, good explanations. Well done!
Yes l less shots of my back
Lol I was fixing an old tecumseh mower for someone and I remember this was the issue. I found that out when my arm just about got ripped off! Came across this video and it made me laugh. Thanks.
I hope you got it fixed.
Thank you Bruce! I don't know much about motors, and mechanical stuff, so you explaining and show your tips is greatly appreciated. This was exactly the issue with my mower, and I managed to fix it by my self after I saw your video. Again thank you Mr Handyman ; )
That is so cool.
Thanks Bruce learning a lot from your videos.
I am still learning too.
Worked like a charm!
Separated the flywheel as shown in the video. Replaced the key, cleaned the mower up a bit, new oil, plug , gas & a shot of WD-40 into the cylinder & gas tank. Couple of pulls later, mower ran like new!
OBTW - Tecumseh motor parts are becoming scarce, will have to buy a new air filter on-line, but was able to locate a flywheel key locally...
waz
Right I don't even throw out broken parts now.
Thank you for this video. That is like my mower, so now I get to do what you have just finished.
Good luck
Thank you Bruce, very neat shop and super pleasant to watch your work. My 25 hp Nissan outboard it breaking my hand of snaps back hard. I ll check the key if broken.
Right. That is where to start. Did you hit a rock? Some times they are given away for the reason you explain. If i did outboards I would be rich!!!
Your videos are easy to understand to me , I liked .
Well you must pay attention because I talk a lot. hahaha
Thank you, saved me a boat load of money. Exactly like you showed👍👍👍👍
Great. You made m day.
I had to laugh at the end when you brought the oil burner outside but kept the exhaust blowing into your shop. Other than that, it was a great video. Keep up the good work. Subscribed.
This isn't National geographic. Just a guy in a garage with a camera. Thanks lol
Thanks for this video I was going to get rid of my mower due to kick back was able to fix it starts on the first pull and purrs like a kitten thanks to your video!!
Thanks a so cool. Thanks
Oh wow thats awesome man! Thats pretty cool the way you fixed it and knew your stuff. Im having a problem putting on a brand new pull coil. Awesome work
Thanks
great job..I have had this happen befor and I had thought the gov. was messed up and broke I will look for this next time.. thanks for the post
Thanks for watchin!!
Bruce, thank you for a most brilliant tutorial on the snap back problem. Your photography, clear concise directions, and a good bit of your humor make it a real gift to all of us in youtube land.
I have a 1960's sears lightning chainsaw that snaps back.The problem is most noticable after i choke the engine to start it. I will first check the flywheel key. Can the problem be that its getting to much fuel, cause the carburetor needs work? Thanks again and god bless.
Bruce the swimmer New Rochelle N.Y.
Yes flooding can cause it too. Cleaning the carb, new fuel filter and air filter will help. (A tine up). Good luck.
Great job Bruce!
thx
Like this very much.. Thanks for the Info.. And your very neat 😊
Learn something every time I watch your posts. Thanks for taking the time to post such interesting cases. Where did you get such a nice and helpful hoist/lift?
A video is the only way to explain Here is a link
ua-cam.com/video/yv7FtFWRHaU/v-deo.html
Great video, very educational, thanks man.🇬🇧
Glad you enjoyed it This is an older video of mine. not designed for phones.
Thanks for tip with the whacking!
Hi Bruce. Another issue can be the rotor base plate if that’s what is fitted. ( common in Australia ) . If the base plate isn’t torqued on adequately, sometime 60 NM, it may slip. The base rotor In some motors IS the flywheel in the truest sense of the word. It’s stores energy via angular momentum. ( remember is spins at 30 times per second at 1800 rpm! ) anyway , a slipping baseplate , or no base plate , will mean the motor is really difficult to turn over. If the motor runs it will back fire etc. I know all this from bitter experience with my tecumseh ULT50. Ps love your videos! Keep up the good work
Well I use a impact wrench so mine will never slip. I tighten them to much. I manually check to see if the piston is almost at TDC when the coil is near the magnets. (manual advance timing)
That was a REAL neat trick to remove the flywheel!! I'm glad I saw this! Thanks!
You are welcome!!
Gotcha! Great videos, keep it up.
I injured my arm twice badly while starting lawn mower after replacing all gaskets, spark module and carburetor. wondered why this is happening, time to check this key out. Thanks for the video
Let me know i m interested.
@@BrucesShop will do
Pretty awesome video man thanks for the information 🙌🏼
Thanks a lot sir.
Thanks , was a quick repair thanks to your video
Robert Keller thank you for watchin.Bruce
Brill video fixed mine using this way of doing it. Cheers Steve
Yes if the rope snaps back this is the main method.
Thanks for posting!
Outstanding video. Thanks.
Thank you so much. you made my day.
Thank you or sharing this video with us, very helpful.
Great I am happy this video helped you
Nicely done!!
Thanks for the visit
Just learned something new. Thanks!!! 😉
Happy to help!
Hey Bruce great video
Glad you enjoyed it
Bruce as always m8 very helpful
Right M8 is mate duh!!!
You do nice work. I pop off the flywheel the same way with a hammer, but I think if I was doing an instructional video, I would go by the book and use a puller so that way if some idiot busts up their engine, they won't blame me for it. Otherwise, thanks for taking the time out for making the videos. :)
+Jon Myers I do have a puller. I use it on ones I figure are going to be tough.
Hey Bruce. Had a a hard time getting the flywheel off as I didn't have a puller. The key seemed to be a permanent part of the shaft and appeared not to be out of place. I cleaned everything and removed some rust from the contacts. The mower started on the second pull with no kick back. I really don't know what I fixed but I guess the cleaning did it. Thanks again for your help. RS
+Ron Scott Well you had a bad connection somewhere, and reassembly fixed it. Was it a Briggs?
good video, explains why my engine is jerking my hand off. suggestion - move your lawnmower stand (it has wheels) closer to your work bench and tools to save some steps back and forth.
Right This is an older video. It was made in 2014. I am still working on improving things though Thanks.
Great video
Great video, after years of repairing small engines I would only add one critique. Before removing the top end you should disconnect the spark and pull the rope and observe the blade and rotation of the crankshaft for loose bade or warped shaft and then proceed to the flywheel key
You are right. I don't film everything i see. As every video would be 2 hours long. But you are right, Thank yo, that is how I check for bent cranks as well.
Yes, just yesterday my old 8 hp Briggs about rip my arm and hand off on the wood splitter, just checked key was good. I'm thinking a stuck valve now
yo, dude, I put a 173 Predator as as replacement for an old engine. Today, I thought I would split some wood on the log splitter... Two pulls later, the whiplash from the starter rope, I thought I had broken two fingers!!!!!!!! After seeing your informative video, it is time to see if that is the problem...thanks, eagle-san in colorado
Good luck sir
Hey Bruce, thanks for explaining this issue. My old Quantum 4hp (bought it at K-Mart!) has been doing the cord snap for a few seasons and it seems to have got a little worse over time. Now that my boys are using the mower I can see that it's a little dangerous. Time to fix it!
Steve Schryburt Yes It hurts when it snaps.
Bruce Pender Hey thanks a bunch for taking the time to show this stuff. My flywheel took a few whacks on the wood block, then popped right off. This fix worked great, no snap-back & more power! Parts under $5 for key & carb gasket. Kids start with one pull. You're saving me $$$ & headaches!
You have lot's of helpful tips
Thanks
i have one snapping the cord back but pulled flywheel and key is perfect could this be an internal problem with cam shaft or something
If you are sure!!! that the key on the flywheel is perfect go for it.
I like the speed up on parts of your videos and the chipmunks talking in the background.
It is fun to do. Thanks
Awesome video. Thanks!
Thanks for watching
Thank you very much for this info
Thanks for the nice comment Bill
Where did you get that hoist for your lawnmower I like that
Bruce, this is what mine is doing, I' ordered a new key + Magneto
+stealhty1 rIGHT I just read you other comment from my other video. Good luck!!!
Hey Bruce. It is a Tecumseh 6.5 hp Yard works!, Just started it again and is running like a Top. No kickback, but I'm still cautious when I pull that rope!! Thanks. RS
+Ron Scott You got it.
I DO HAVE a broken wrist from a cord that pulled back, thanks for explaining... it is a fairly new mower I will be returning....
Best of luck Jennifer
Hi Bruce, Thank you for another FANTASTIC video. If the woodruff key isn't tapered, and isn't square, how does one determine the orientation of the offset (when the keys are offset) ??? [for the other viewers, many woodruff keys are square, (looking from the top down, but long) and it doesn't matter] under the conditions which you have presented, the key is offset, and sometimes it ISN'T tapered. Is there any 'trick' or advice that would determine the orientation of the key ? Thank you Bruce, for all of you FANTASTIC information. You are a great bunch of knowledge.
I just watched Donyboy73 do one of these and the key is straight. I have done them too but this one just came to mind. here
ua-cam.com/video/FwBMBRk852M/v-deo.html
Thank you !
Great job 👍. I am facing the same problem too. Probably broken flywheel key.
I might be.
Bruce thanks for the video
I have exactly the same lawnmower with same problem. But, I can’t get it started after changing the pin. It looks like I’m not getting any sparks. Do have any suggestions
they are hard to see. can you hold the plug in your hand to fell the spark. Go easy of course.
thanks for video can the blade key have the same affect on mower
Yes , it is more common on mowers as they hit hard objects which shear the key.
I watched a Vintage Bruce video from the vault 👍🏼👌🏼
You are going back in time.
way to go bruce
You have a real neat and tidy shop there Bruce , wish my garage was so tidy , is that a record #6 vise that is bolted to the work shop bench ? If so thats a real nice vise . keep up the good work.
+Dave Dook Record 3 good eye
I just learned something here watching this. The key must match the slot. I had my 7hp mower doing this too and I had it apart down to the flywheel but I didn't know what to look for, now I do. I just took my mower to a guy in the next town over from me because he fixes small engines. I wish I didn't now but he is reasonable. If I had known this I would have jumped on amazon for a flywheel key set. Not sure which one my mower takes or are they standard?
Most of the Tecumseh's take the strange looking one like this video. There are different ones. just remove the old one and check.
I watched this video and solved my problem.
Great.
Thanks Dude
@Bruce Pender i have a predator engine it backfires when pulled and turns on but revs really really high the governor was taken out any thoughts on what it could be?
You need to put the governor back in first. That is what it does
Bruce got tiller that does the same thing dam near takes your hand off I pulled it a part and checked the key way it looks good any help thanks sam
Well there is something igniting the fuel when the piston is before top dead centre. It could be a leaking intake valve. You can take the valve inspection plate of and check to see if you have enough valve clearance on the valves.
6:45 into this video ua-cam.com/video/coZfgnII-hc/v-deo.html
On old engines that have points, shearing the key causes the engine to be totally dead because the point timing is correct, but the magnet timing is early, leading to no spark.
great video my friend
Thanks so much.
I have a massive whip mark across my chest after trying to start this hayter with a briggs on bloody thing 😂 hope it this will have a look in the morning
Good luck
What is actually moving as far as the crank or engine when you rap it with the block as you pop the flywheel off. My lawn mower is running really bad, and almost tore my wrist off after kicking back. It tore the rope in half again.. I thought it may be the lightened blade after years of sharpening the edge maybe being too light. Thanks for pointing the real culprit. Over a time i must have stopped the blade on something maybe 4 times. Thanks for the video. Frank
Thanks for watching Frank
I understand this is a common problem with tecumseh motors. Is it also common on Honda's? I just had one rip the handle right out of my hand several times. It would run and sputter a few times when it did start.
I also don't have a blade attached. Will this have a significant impact on the engine firing too early?
Well I would put the blade on as they are designed for the flywheel affect.
Could a broken pull start the plastic bit just before the spring result in knocking the key way out of sync Bruce has i havent hit anything
I don't know. . it takes a good whack. Is it a new but used lawn mower for you?
Thanks for showing how to smack the flywheel off!
Go asy as the threads are easy to damage.
@@BrucesShop i got it on the 3rd wack. You are awesome
Where do you get those fly wheel keys from I have the same problem with my brute lawn mower!
This link is for a Briggs The video was a Tecumseh. Similar but different.
www.amazon.com/Briggs-Stratton-Flywheel-Key-5002K/dp/B00004RB14/ref=sr_1_1?keywords=Briggs+%26+Stratton+Flywheel+Key+5002K&qid=1556038217&s=gateway&sr=8-1
Clean worker, 👍
Thanks
Where did you find the 216b wrench? Also called a can wrench?
+Steve Pavlovich I got to take my tools home wen I retired :-0
Bruce I have a Sears tiller takes your arm off pulling on the rope .I checked the key way and it is good the fly well is steel about 10 or 12 years old could the valves need adjusting and can you a just them. Sam thanks
What type of motor is it. If it is a flathead (valves in the block you can remove the head and shave a bit off the valve) If is overhead valve (aluminium valve cover) You can adjust the valves easily.
Ok I will take a look thank you Bruce. Your the man , sam
Love the safety crocks you're wearing! lol...I'm bad about not protecting my toes and was wondering...have you ever been bitten by the Murphys Law where anything you drop will hit your toe and send you into a (delete explative or) cursing rant? Been there done that but I have yet to learn my lesson. lol Always enjoy catching up on your older videos my good Friend! Cheers!! Zip~
ZippoVarga Those are steel toed crocks!!!!! hahaha Oh yes II have hit my toes. I am harder on my hands though.
Same here...every time I think all my finger and hand wounds have healed, a new one appears. lol
Are all flywheel keys basically the same in all mowers?? I have the same problem with my 6.5 hp Yard-Works mower!! Almost broke my hand the other day!! Thanks RS
+Ron Scott No Basically Briggs and Stratton are different than the Tecumseh. If it is a Tecumseh the flywheel keys are not "square". The Briggs are a rectangle shape. You should be able to see the make of the motor by looking closely at the engine. The disassembly is almost identical for both.
Hey bruce another great video but i have the same tecumseh motor with a kickback , the flywheel key is not broken or bent what else could it be ?
I would have a real close look at the key. Even though they look fine, When you remove them there may is just a deformation on it----------- this can cause the kickback.
ok thanks
Can you tell me where you got the lift to lift the mower. Thank you.
Here is the video from a few years ago Goog comments too
ua-cam.com/video/yv7FtFWRHaU/v-deo.html
Good info. I tried this but my key was fine. Ended up starting it with my drill while the pull cord was off. Fired up after a couple of attempts. Guess it just sat up too long.
Things needed to seat I guess. Like rings and valves.
Hey Bruce, I checked for the fly wheel key and its intact on my mower. So what else could be causing the problem with the rope snapping back? Thank you.
It may be an internal issue. Cold you take it in or do you have the ability to take the motor completely apart.
Hi Bruce, I was given a Weed eater lawn mower with a 5 hp Briggs engine. Its the newer style Briggs you see on pressure washer and a few different lawnmowers. It was given to me after it hit something because off the terrible kickback. First thing I checked was the flywheel key. It looked ok but I changed it anyway. Put it back together and it still has bed kickback. Any ideas on what else to check?
It may be the cam gear slipped. I don't like to say that as the motor has to be disassembled.
Yah thats what I was thinking, well I guess the next move is to crack the sump and take a look. Thanks for the info, and keep up the good work.
Thanks for the positive comments.
I've got a Cub Cadet 173 push mower spray starting fluid to to start it it jerks the Rope out of your hand real bad and it won't stay running I'm going to have to pull the flywheel off and see if the keys broke appreciate the video
Yes that sounds right. Enjoy the process. That is what i try to do.
I'm just wondering do push mowers not have torque specs on the flywheel?
Yes they do. My impact is a weak one so I just tighten them up. Yes everything on a mower has a torque value. If it is motor related I use the specs. Thank for the comment You are correct in asking. 450 inch lbs for some up to 600 inch lbs. 37.5 foot lbs for 450 inch lbs