Kohler Command Engine Missing and Popping

[@sadbutwedidntstartit]

I've watched some 50 + lawn care / service videos the last 2 years and yours is one of the best. You are clear, concise and thorough. I'm going to subscribe. I picked up a Kohler twin cylinder engine that has the same issue and I'll go down the list. Thanks.

[@JohnsonsSmallEngines]

Thank you for supporting the channel!

[@brucef1401]

I wish I found this video before watching Taryl's. Cost me $125 for a new coil I didn't need. So thanks heaps to Johnson's Small Engines for this correct broken key diagnosis....absolutely spot on.

[@JohnsonsSmallEngines]

Hi Bruce, I’m glad you came across this and it was helpful. Thank you for the kind comment. Please give this video a thumbs up, subscribe and tell your friends to help my channel grow. It would be greatly appreciated:)

[@larrystowe2761]

I ran into one last week on a briggs and stratton single cylinder. It actually broke the flywheel. I've been repairing lawnmowers for about 12 years and this is the first time I've seen this happen. Great video. Keep up the good work.

[@frankpulm4785]

Just subscribed. Spent hours trying to figure out why my mower would not start. Never would have guessed it was a sheered flywheel key. Thanks

[@JohnsonsSmallEngines]

Hi Frank, it doesn’t happen very often but it does happen. Thank you for supporting my channel!!

[@Jeff-iu7wr]

I have this exact same mower and motor. Your video was awesome. I popped my flywheel off and boom, sheared key! You're the man!

[@JohnsonsSmallEngines]

Hi Jeff, I'm glad to hear you figured it out and your up and running! Thank you for watching and the kind comment.

[@Jeff-iu7wr]

@@JohnsonsSmallEngines I got the new key in after having it overnighted and it started right up after following all your advise (especially for reinstalling the magneto) Thanks again!

[@cabnmanmeyer1698]

Thank you Brad, I just finished replacing my flywheel key. The old girl is running like a top, thanks to your video.

[@JohnsonsSmallEngines]

Glad to hear!

[@sambeasley893]

You are the biggest inspiration!! Recently had a friend take his life from a small disability setback. Subscribed to you for your content and ability. Keep them coming.

[@JohnsonsSmallEngines]

I’m sorry to hear about your friend. Thank you for the kind words and subscribing:) I sure will keep them coming!! Thank you for the support.

[@NoPeoblem389X]

I have been doing this for more years than I will admit I enjoy watching the younger generation working with their hands getting things done rather then having someone to do it for them if they are willing. Well done very informative anyone following along should not have any problems performing this modest repair. So again well done only thing I could add would be maybe a little 242 blue loctite on the flywheel bolt. Very good job keep up the great work.

[@JohnsonsSmallEngines]

Hi Raymond, thank you for watching and the kind comment!

[@LarryHelvick]

great job on the video - you explained step by step and was easy to understand

[@phillipanderson2607]

Back in 2005 I bought a huskee supreme 54 inch 23 hp Kohler courage v twin garden tractor from TSC brand new. In about a 6 month period the engine develops the same sound as yours . Which the key was sheard key like yours. Made the same sound. We never had hit anything with the blades replaced the key on flywheel ran great. I guess after seeing this video they had problems with these engines from the factory. I've owned a 17 hp v twin briggs and Stratton engine from 1989 that still ran good when I got ride of it in 2005. I like briggs engines better.

[@westofthelakecadillacclub]

This is one of the best videos for repairing Kohler engines I’ve seen. You are clear and right to the point. Other videos try to be funny and do character bits, and that’s not why I search for videos. I’m bookmarking your page. Thanks for your great work!

[@JohnsonsSmallEngines]

I'm glad it was helpful and thank you for the kind comment.

[@watermanone7567]

Very nice fix. Some of the earlier models did not have that ground connection on the voltage regulator and when the bolt failed to ground it , you had to add a short ground wire. The Kohler Courage engines are even worse, many issues and crankcase leaks, carburetor issues etc. Thanks for the video, Great work.

[@JohnsonsSmallEngines]

Thank you, I know all about the bad Kohler Courage engines. Cracked blocks, bad valve covers, just a very bad engine. I'm happy they do not make it any longer. Thanks for watching!

[@gravedigger1960]

I'm impressed...You do very well with only one hand. Somethings are hard enough with two hands.

[@JohnsonsSmallEngines]

Thank you for the kind words.

[@joec6532]

I get a lot of ideas off of these type of youtube videos. They're like little detective stories for the mechanically inclined trying to figure out problems. Thanks!

[@ironbacon]

Thank God for you and this video. I've been pulling my beard out trying to figure out what was wrong with my motor. Got a great deal on the 16hp version to put in my racing mower and have spent 2 days trying to get it to run when I found this. Exactly my problem, thank you.

[@JohnsonsSmallEngines]

I’m glad this was helpful and thank you for the kind comment. Please give this video a like and tell your friends about the channel to help it grow! It would be greatly appreciated. I would like to see a few pictures of your racing tractor if possible??

[@philj2670]

Great video. You saved me some serious $$$. I bought a 3/16" x 3/4" woodruff key at my local hardware store for 99¢. Ground it down a bit on a bench grinder and it fits perfect. Thanks again.

[@JohnsonsSmallEngines]

Glad to hear! Thank you for watching and the kind comment. Please give this video a like and share the channel to help it grow. It would be greatly appreciated.

[@michaelteti5148]

I have the same engine the same problem. Been going crazy trying to figure out why it won't start. Hopefully this is the problem. Can't wait to check it out. Thank you very much for your video.

[@JohnsonsSmallEngines]

I hope you figure it out and this may be the fix.

[@christhefistful]

Great video very good explanation subscribed. I have a 2003 JD L110 model same engine bought it new still runs great. Had to replace the transaxle last year upgraded to a brand new Tuff Torq K57R for $269.95 from Surplus Centre Lincoln NE. I got lucky even with shipping to Canada and exchange it was way cheaper than the JD dealership. Looking forward to seeing more of your content.

[@JohnsonsSmallEngines]

Thanks Chris and thank you for supporting my channel. It is greatly appreciated:)

[@hoyt15flhtk82]

AWESOME job on the conveyance of information and hands on doing the job. Very well thought out video. No one should have a problem doing the same job after watching your video!!! Thank you and its time to round up my tools needed for the job you've shown me how to complete. Have a GREAT DAY!!!

[@JohnsonsSmallEngines]

Thank you! I’m glad the was helpful. Please give this a like, subscribe and tell your friends to help my channel grow. It would be greatly appreciated.

[@hoyt15flhtk82]

@@JohnsonsSmallEngines I will for sure and I also have a L130 with the 23hp Kohler cmd motor. Would it be a wise thing to do if I checked the flywheel bolt on it if tight? Its running fine now but was thinking like preventative Maint.

[@JohnsonsSmallEngines]

That is a non prevent item. Normally there very few problems with the bolt being loose on small engines.

[@imakeitgreen3777]

Just saw ur channel for the first time. I'm glad u don't do alot of unnecessary talking, u go straight to the point. Guys like me who fix there own stuff don't have time to hear about someone's lunch and pause to talk about it. Can a blown head gasket cause similar symptoms. I subscribe also. Thx stay on point like ur doing.

[@JohnsonsSmallEngines]

A blown head gasket most of the time would not make a popping and missing sound. It would sound like air puffing out when you turn the key to the off position while engine is slowing down. If the flywheel key is ok? It will normally be ignition, try replacing spark plug, carburetor, rebuild it or possible a valve issue but valve issues are rare with the Kohler command engine. Thank you for subscribing, commenting and watching.

[@gravedigger1960]

Another way to quickly check for a broken key without taking off the flywheel is to put the piston tdc then look at the magnet, on the flywheel, it should be right at the magneto.

[@JohnsonsSmallEngines]

I agree to a point but if the key doesn’t shear all the way most people cannot see the difference except to the trained eye so opening it up and taking off the flywheel is in my opinion the way to go plus if it is sheared your able to repair quickly:)if it’s not then you move on to the next possible issue and you have just learned a lot about your engine :)

[@kevinbrister8801]

Thank you for the very informative video, it helps alot when people do tutorial videos to exclude the annoying music! And it helps the viewers when you do speak the commentary! I have this same exact mower, I've had it since 2010. Bought it used at approximately 300 hours. It now has 537.6 hours. I'm just now starting to have issues with the motor, the deck/mower parts I've replaced as needed over time. My issue with the motor is the last time I mowed (I have 1 very rough terrain and dusty acre) I was approximately a little more than half done when it made a pop sound (sounded like it was internal and wasn't very loud) it had been smoking for a bit but once it popped it started getting sluggish. So instead of pressing on thinking that it blew a gasket or piston ring I just shut off the engine for fear of it locking up. I let it cool down went back and tried to crank it. All it did was turn over but no start. Next day tried it again and same thing! This was 3 weeks ago, I had a friend of mine that is small engine literate come take a look. He first tried the spark test ( gets excellent spark)then pulled the valve cover (all looks good). He then took the cover off to expose the flywheel and checked for compression (all good). He ran out of time because he was in the process of moving to a new place and had to go get a key and would be back to go deeper in to find the problem when he had time and I had money to pay him! Lol. He did say that it could possibly be a carburetor/choke/solenoid issue??? He then said if that wasn't the case then it would have to be internal (my guess is full motor rebuild???) To my knowledge this motor has never been opened up but we did find that there where a few small rocks on top of the fly wheel where the fins are??? But none of the fins are chipped or broke! Could I have sheared that flywheel pin??? Or would it be a best assumption to try the carburetor/choke/solenoid first??? On a normal mowing routine this motor does smoke for about the first 3 or 4 laps then quits. I have noticed that it does burn oil it has to be because I dont see where its leaking or puddeling, It stays parked on concrete???

[@JohnsonsSmallEngines]

I would pull the flywheel and and check the key before getting into the carburetor. You said it started loosing power after the first pop. A sheared flywheel key will make the engine sluggish because the timing will be off. Thank you for the kind words, please give this video the thumbs up, subscribe and tell your friends to help my channel grow. It will be greatly appreciated !

[@kevinbrister8801]

@@JohnsonsSmallEngines awesome thank you!

[@kevinbrister8801]

@@JohnsonsSmallEngines we did a little more investigation yesterday and we found that when we pulled the spark plug out with a flashlight we could see that the piston/arm is not moving when motor is turned by hand. We think it might have broke the piston arm!😥😫☹ So if thats the case then that would mean that the motor ran without oil but that doesn't make any sense bcs I know for a fact that it had oil every time I'd get ready to mow! What would cause the use of so much oil to burn that it would run itself dry within the 1 1/2 hour mowing time??? We haven't actually dove in to the guts yet, that will be our next investigation. Probably today! Also since I bought this mower used 10 years ago it doesn't have a service manual. I've been on the Kohler website but haven't found exactly what I'm needing, do have a suggestion of a source? Thank you!

[@JohnsonsSmallEngines]

@@kevinbrister8801 There are many different reasons why your engine can burn oil. I can say that most small engines do burn a little oil while running and if you went a very long time without adding it or changing the oil and oil filter? It can run low and lack of lubrication will happen, then boom the connecting rod will break. Which in your case may have happened. Not much to do now. Repair it or just fine a used engine and install. You should be able to find a service manual online. Just google Kohler Command Manual PDF and many should pop up. You may need to enter the model of your engine that should be on the silver sticker on the side of the engine to get to the correct manual. One manual may also cover many models.

[@kevinbrister8801]

@@JohnsonsSmallEngines thank you

[@petecooper3701]

excellent engineer, excellent result. Well done , Pete on the Isle of Wight.

[@JohnsonsSmallEngines]

Hi Pete, many thanks! I'm glad it was helpful and thank you for the kind comment. I'm in the eastern US.

[@gonzorig1]

Great video, helped me solve my issue with my john deere L110. The bolt holding flywheel down was not tightened at all. Thanks for the video saved me time .

[@JohnsonsSmallEngines]

I'm glad it helped you and thanks for subscribing!! It is greatly appreciated.

[@bertgrau3934]

Years ago ( 1990s) I had the same problem with a tecumseh engine , started ran about 1 minute and stopped. Took the flywheel off same thing. The flywheel bolt has to be torqued properly or the key will break. I know I'm late , but its a great informative video.

[@JohnsonsSmallEngines]

Hi Bert, I remember when Tecumseh engines were on Craftsman tractors back in the day.

[@bertgrau3934]

@@JohnsonsSmallEngines The tecumseh I worked on was on a roto tiller . Regardless of what I work on I make sure the flywheel is good and tight. Great video sir

[@TheCrittercam001]

Excellent video! Very direct and to the point with great camera work and detailed easy to understand explanations♥

[@JohnsonsSmallEngines]

I’m glad it was helpful, thank you for the kind words. Please give this video a thumbs up, subscribe and tell your friends to help my channel grow. It would be greatly appreciated:)

[@TheCrittercam001]

@@JohnsonsSmallEngines You are welcome my friend I will do what I can to help your channel grow!

[@tomsnyder5324]

Outstanding video. Many thanks.

[@dinocostis3523]

Hey mate. I watched your video and you saved me a lot of time. This is what was wrong with my L110. Pulled it apart and changed the key way and problem solved. Thanks for the video.

[@JohnsonsSmallEngines]

I’m glad this video was helpful, please give this video a thumbs up, subscribe and tell your friends to help my channel grow. It would be greatly appreciated:)

[@aly.3921]

ive been trying to revive a cv15s that has been sitting for 4 years...new carb....new fuel pump...cleaned out the fuel tank....but ive been messing with it for 3 days now...when cranking it would gulp gulp gulp then pop from the carb and the exhaust...i just couldn't figure it out...when you mentioned that flywheel bolt being loose...that is what i have,...but didn't pay it any attention...first thing tomorrow i will check the woodruff key...and will report back...in the mean time thank you for the great content

[@JohnsonsSmallEngines]

Sounds like you may have found it! Let me know show you made out.

[@erinmattson8816]

Thank you so much for this video. That was exactly what was wrong with mine. I wish I had found this sooner. You would have saved me a LOT of frustration.

[@JohnsonsSmallEngines]

I’m glad you figured it out!

[@boogyman1166]

Tons of great info, helped me diagnose issues with my Kohler. Well done!

[@JohnsonsSmallEngines]

I’m glad it was helpful! Please give this video a thumbs up, subscribe and tell your friends to help my channel grow! It would be greatly appreciated:)

[@argentumman7116]

You, Sir, are a GOAT! You've helped me more than you know. Great video and I'm going to let others know about your channel.

[@JohnsonsSmallEngines]

I’m glad this video was helpful! t Thank you for the very nice comment!! and spreading the word about my channel. Give this a like to also help the channel. It is greatly appreciated:)

[@johnhedger4093]

Love your videos they are very helpful,you and others have made it easy for me since I had a hart attack to work on small engines.keep up the good work

[@JohnsonsSmallEngines]

Thank you for the kind words! Will do!!

[@petermalinosky4861]

Outstanding video. I just fixed my John Deere thanks to your work. Thanks

[@JohnsonsSmallEngines]

Hi Peter, I'm glad to hear your back up and running! and thank you for the kind comment. Please give the video a like and tell your friends about my channel to help it grow. It would be greatly appreciated! Thank you for watching.

[@joenolan1419]

Just exactly what I needed to know I’ll get started and let you know the outcome. Actually I have 2 mowers of my own I need to repair

[@elbertkonkel7158]

Thumbs up to you what you are doing with one hand and very explained video I've been working on small engines for years and im still learning every day im mostly working on four wheeler's now best video I've seen in awhile keep up the good work

[@JohnsonsSmallEngines]

Thanks Elbert, and thank you for watching. please give this video a like and tell your friends to help the channel grow. It would be greatly appreciated :)

[@doppiodave1266]

THANK YOU! so much, that was my problem on my 17.5 Kohler. Dude you just saved some big $$. Video was very good easy to follow. thanks again!

[@JohnsonsSmallEngines]

I’m glad you are back up and running. Please click the thumbs up button, subscribe and tell your friends about my channel to help it grow. It would be greatly appreciated.

[@jjrieger]

Thank You, You made my day, fixed motor by replacing broken half moon key. MERRY CHRISTMAS

[@JohnsonsSmallEngines]

I’m glad you were able to get up and running correctly again! Thank you for watching and the kind comment!

[@jjrieger]

@@JohnsonsSmallEngines Thank You

[@freedomisfromtruth]

You are good at this, fixing and teaching. Thank You. My elder neighbor has a similar JD rider and everytime he takes it out the best way to get it started is spray fuel in the carb then runs fine entire mow. Fuel filter mess cleaned, replaced. Wondering whats going on, on such a newer machine.

[@JohnsonsSmallEngines]

I need more information to help. What is the make and model of the engine?? It sounds like the choke is not working.

[@sanityone649]

Very nicely done. I have an Intek...Briggs engine that may be suffering the same dilemma. I now have a pretty good idea on how to replace the key.

[@rudysaldivar4228]

Young man. I can’t even tell you how many screws, bolts, and washers I’ve dropped with two hands. I can only imagine how hard it is with one hand. As you were working I though that a long thin magnet on some type of leather “sleeve” that slides over your forearm would give you an added degree of dexterity. Does that sound practical at all? My hat is off to you my friend.

[@JohnsonsSmallEngines]

I was born with only my one hand and they “Doctors “ tried to make me where a artificial slide on prosthesis with a hook/jaw that opened and closed. Kids when I was young called me captain hook. That didn’t go well with me and I never wore it. I always did the best I could without it and managed well for 53 years. I do appreciate your thoughtfulness and thinking of me that way! Just like they say, “you can do anything if you put your mind to it”. I hope my videos inspire more people to work on there own equipment. Thank you for watching!

[@JohnSmith-xs8bs]

Thank you so much for the information. It been popping for the last few days thank you

[@JohnsonsSmallEngines]

Glad it helped!

[@kennethperian4370]

Good job showing, I no more how to trouble shoot now. And find the trouble, PS have a good one buddy and thanks.

[@JohnsonsSmallEngines]

I'm glad it was helpful, Thank you for the kind words.

[@justinhruby7040]

Nice job buddy I did everything else u mentioned ran out of ideas found this video and sure enough my key was sheared!

[@JohnsonsSmallEngines]

Hi Justin, I’m glad you kept at it! and found this video. It doesn’t happen often but it does happen. Thank you for commenting. Please give this video a like to help my channel. It would be greatly appreciated.

[@lt8710]

You are awesome! You fix my tractor every time! ❤

[@JohnsonsSmallEngines]

Glad to hear!

[@richj11]

Excellent video! I'm a subscriber now! Going to go see what else I can learn on your channel! Thank you!

[@JohnsonsSmallEngines]

Thank you for watching, the kind comment and supporting my channel!

[@sticksnstonestn4120]

Nice video and explanation all the way thru. Great job.!

[@JohnsonsSmallEngines]

I’m glad it was helpful. Thank you for watching and the kind comment! Please give this video a like, and share my channel with your friends to help it grow. It would be greatly appreciated!

[@andrew4403]

You guy's are right very well explained. Keep up the good work. I really did like this video.

[@JohnsonsSmallEngines]

Glad you liked it! and will do! Thank you for watching and the kind comment:) I’m glad it was helpful.

[@Grant849]

This is some insane mechanic work lol

[@robodell5863]

This video saved my mower. Thank you!

[@JohnsonsSmallEngines]

Nice!! Glad to hear!

[@randywatson9585]

That laugh was most appropriate when you gave the most brief description ever of microfiche. Miicrofiche disappeared from existence faster than quaaludes

[@JohnsonsSmallEngines]

You know your getting old when people do not know what microfiche are. LOL

[@MichaelMiller-r6x]

Outstanding. Extremely helpful

[@JohnsonsSmallEngines]

I’m glad it was helpful! Thank you for watching and the kind comment. Please give this video a like, subscribe if you haven’t yet and share my channel with your friends to help it grow. It would be greatly appreciated:)

[@wakeup7923]

You are amazing! Thank you for this video andyour attention to detail. Super videography!

[@JohnsonsSmallEngines]

I’m glad it was helpful and thank you for the kind comment. Please give this video a like, subscribe if you would like and share the channel with your friends to help her grow it would be greatly appreciated. Thank you for watching!

[@jacobsonleland]

Super job and great Narration of the work

[@JohnsonsSmallEngines]

Thank you! I'm glad it was helpful and thank you for the kind comment.

[@mostcom]

Exactly the information and tutorial I was looking for.

[@JohnsonsSmallEngines]

I'm glad it was helpful!

[@rondunning4859]

I lost spark to both plugs all at once. The mower run a week ago now nothing. Any ideas on where to start diagnosis?

[@JohnsonsSmallEngines]

Replace both coils after looking for any grounded wires. Any signs of mice under the cover?

[@justinvegan]

I recommend putting a 75-85 micron fuel filter right before the carb where the rubber line is. The steel fuel line rusts & causes rust particles into the carb. I had this issue so I sand blasted the fuel line then did the filter. Oh, & cleaned the carb. I know this isn't the subject of this video but would like to contribute some information about these designed kohler's.

[@gsams3805]

Great video.. and OH FYI.. I had a brand new engine.. and the key was broken... those wont run either LOL...

[@cmetcalf3830]

Do you have the part number for the flywheel key?

[@JohnsonsSmallEngines]

Kohler Part #X4215S

[@1duesy]

What size bolts screw into flywheel with puller?

[@clayderrick7351]

Your video is well done and contains great information when troubleshooting lawnmower engine popping issues. I have a Kohler Command model CV490s (spec 27508) on a Sears Craftsman LT-2000 riding mower. The lawnmower runs fine for about 30 minutes then pops/spits and sputters before it dies. I replaced the carburator, battery, fuel filter and spark plug to no avail before viewing your video on the John Deere L110. Removed the valve cover but there are no adjustment screws/bolts, so on to the flywheel to check for a broken key. Is there a possibility that the ignition coil is also weak/going bad?

[@JohnsonsSmallEngines]

If your engine runs fine for thirty minutes then most likely you either have a as you said (1)ignition coil failing, (2) clogged fuel cap or if you have a (3) electronic fuel shut off solenoid under the carburetor. You should purchase a spark tester and when the machine fails, check the spark. Can you re-start the machine as soon as it stops or do you need to wait for a while before it will run again?

[@gerardlunow567]

Great video. Never had this problem but very good to know. !!!! Thanks for using a puller vs a hammer. . . :)

[@JohnsonsSmallEngines]

Hi Gerard, Thanks for watching and commenting!

[@jamesrussell4376]

Saved me lots of doe. That's what it was. Thanks!

[@JohnsonsSmallEngines]

Hi James, I’m glad you figured it out with this video. Thank you for the kind comment. Please give this a like and tell your friends to help my channel grow. It would be greatly appreciated.

[@rs71355]

Thank you for this video I have a kohler command cv15s that idles fine but when you put it under a load it misses pops and backfires. I thought the carb needed rebuilding so I did that and replaced the plug and coil but it still does it, I'll check the key and see if it is sheared some or all the way. is there any other things to check for with an engine running like this?

[@JohnsonsSmallEngines]

Water in the fuel.

[@rs71355]

Thank you I will drain the tank and give it a try.@@JohnsonsSmallEngines

[@JohnsonsSmallEngines]

Worse case you may have valve issues. I’m just giving you educated guesses. I would need to see the machine to determine what is going on.

[@jimsvo4486]

How would a flywheel key break like that? Hit a big rock while mowing?

[@JohnsonsSmallEngines]

I would say yes (hit a rock and sheared) if the blade was attached to the crankshaft but there are too many belts that would give before this engine would abruptly just stop. Most of the time I have come across a loose flywheel bolt allowing the flywheel to move then it shears. I have also seen the engine backfire while shutting down and the engine will abruptly spin in reverse and shear the key.

[@SARDOG]

What size bolts did you use for the puller screwed into the flywheel??

[@JohnsonsSmallEngines]

I think they are 8mm x 1.25 pitch. Length depends on what puller you are using

[@larry3099]

Great insightful video!! Thank you!

[@JohnsonsSmallEngines]

I’m glad it was helpful and thank you for the kind comment. Please give this video I like, and share my channel with your friends to help it grow! It would be greatly appreciated. Thank you for watching.

[@nitrokiller9959]

That mower looks brand new holy cor

[@rondunning4859]

First time watching ur video and it was great. Thank you

[@JohnsonsSmallEngines]

Hi Ron, I’m glad it was helpful and thank you for the kind comment.

[@tonymontana897]

I have the exact same engine and found this video very helpful. Thank you so much for taking the time to share. Can I ask how you lost your hand Sir ?

[@JohnsonsSmallEngines]

I’m glad the video helped you out! Thank you for watching! I was born with only my right hand..

[@fair2middlin]

@@JohnsonsSmallEngines Thanks for answering the super curious question

[@ke8222]

I have a kohler command 25 that will fire right up but will not stay running longer than 15 seconds. It goes from full idle to sputtering out. I've changed with new factory parts the carb (and did a rebuild kit) the fuel filter, fuel tank cap, spark plugs, fuel pump. This is at full choke as well, won't start any other way... thoughts?

[@JohnsonsSmallEngines]

Impossible without seeing the machine but I would suggest checking fuel flow from fuel tank to fuel filter to make sure there isn’t a blockage OR you may have blown head gaskets so the compression is so low the engine will not stay running.

[@ke8222]

@@JohnsonsSmallEngines thanks for answering, it was both head gaskets. one was leaking externally and one was internal. Replaced and running like a champ now.

[@JohnsonsSmallEngines]

@@ke8222 glad your back up and running!

[@petertimpson9378]

Funny thing is i have the dame mower and exact same engine and i have to choke it every time i start it. Mine runs fine but then boggs for 3-4 seconds then runs fine again. Plug, air filter, fuel pump(x2, doesn't play well with non-John Deere parts) and just changed voltage regulator (separate issue). Not sure where to turn next. Great video BTW

[@bw1841]

I converted mine to a vacuum fuel pump. Custom Block off plate in the fuel pump location with a nipple for impulse.

[@leongrubbs8492]

Thanks for the lesson.

[@JohnsonsSmallEngines]

I’m glad it was helpful:)

[@deechance5896]

Great instructions!!!! Thank you Sir.

[@MikeMike-qw3uk]

Thank you nice video I have a question there is no valve adjustment there is only simple bolt to tight that's all how to do that.

[@JohnsonsSmallEngines]

Correct, on the single cylinder Kohler command engine there is no adjustable valves. They have hydraulic lifters. I can say that sometimes the valves will sound horrible “loud tapping “ noise until the lifters get pumped full of oil. If your experiencing loud valves? Run the machine by cutting grass for ten minutes then listened your engine and it should be quiet by then. Also make sure your using 10/W/30 oil and it is at the correct level.

[@randalllee2525]

Great video. Thanks

[@JohnsonsSmallEngines]

I’m glad it was helpful and thank you for the kind comment. Please give this video a thumbs up, subscribe if you haven’t already and share my channel to help it grow. It would be greatly appreciated!

[@LeeGuy-jd1ho]

I have exact mower it poots pops and misses while sitting. I've does all filters cleaned carb replaced plug and replaced head gasket and exhaust gasket. Still missing while sitting still. Gonna do this next

[@daviddaughenbaugh1080]

Great video!

[@JohnsonsSmallEngines]

Thanks! I hope it was helpful and thank you for watching!

[@daviddaughenbaugh1080]

@@JohnsonsSmallEngines it helped alot. Mine only wants to run on choke. Put on new fuel filter, new plugs, has spark on both cylinders, and the electronic thing on the carb bowl clicks as you said it should. I'm down to thinking it may be some dirt in carb. ?? Seeing your video helped me check a couple things as I would have missed.

[@JohnsonsSmallEngines]

Yes, you have dirt in the carburetor or if you have a fuel pump on the side of the engine, sometimes that may fail but not often. Running the machine in the choke position to compensate is most likely a dirty carburetor.

[@chrisstokley7687]

exactly what mine did.. tyvm .. great video

[@JohnsonsSmallEngines]

I’m glad it was helpful!

[@dennisisom1]

Where can I find that puller?

[@cravenmoorehead5636]

I have a 12.5 command horizontal shaft. It backfires from both sides flywheel key Is not sheared any other ideas.

[@JohnsonsSmallEngines]

Does it run? Perform simple first. Install a new spark plug, check to make sure carburetor is 100% ok, check the choke and throttle plates on the carburetor inside to make sure they are tight on the shafts. Other than that you only have the valves that would make the popping and missing, you would need to tear into it to see what’s up like a valve seat loose etc.

[@cravenmoorehead5636]

@@JohnsonsSmallEngines yessir just got back on line. But still have same issue. Any chance compression release is stuck open?

[@JohnsonsSmallEngines]

@@cravenmoorehead5636 Doubt it. The next step is to take head off. You may have a valve seat popped out but I cannot confirm any of what you have done without seeing it so good luck and keep on working in it until you find out what has happened.

[@promaintenance]

What causes this to happen in the first place?

[@JohnsonsSmallEngines]

The flywheel bolt loosens up.

[@promaintenance]

I believe mine was caused by a lean carb causing a backfire. This propelled the crankshaft too fast and sheared the key to the flywheel.

[@nicholascanzano6875]

fantastic video....very helpful

[@JohnsonsSmallEngines]

Hi Nicholas, I'm glad it was helpful. Thank you for the kind comment. Please give this video a like, subscribe and tell your friends to help my channel grow. It would be greatly appreciated. Thank you for watching!

[@DWNSHFTco]

What would you say the actual torque would be for the crank bolt?

[@JohnsonsSmallEngines]

You should look up your engine model to make sure you are getting the correct torque value. The correct torque for the engine flywheel bolt in my video is 49 foot pounds.

[@chrisr2941]

Put an impact wrench on it until it strips out, then put a tack weld on the top lol

[@dondale68]

I've had mice chewing the insulation off wires. The simplest way I've found to re-insulate them is by using the 3M liquid electrical tape. Just apply a thin coat, do something else for about 30min, apply a 2nd coat! Works, EASY!

[@JohnsonsSmallEngines]

I’ll have to try that. Thanks for the tip :)

[@indianjimmrmc]

Thank you, you are the man!

[@JohnsonsSmallEngines]

Thank you for the kind comment. I’m glad this video was helpful. Did you have a sheared flywheel key?

[@softmetals3702]

perfect step by step thanks

[@JohnsonsSmallEngines]

I'm glad it was helpful and thank you for the kind comment. Please give video a like, subscribe and tell your friends to help the channel grow. It would be greatly appreciated. Thank you for watching :)

[@TheDeerhunter42]

dude your a pro. thanks for this video

[@JohnsonsSmallEngines]

I'm glad it was helpful and thank you for the kind comment. Please give this video a thumbs up to help the channel and tell your friends!! It would be greatly appreciated.

[@abigailbautista6710]

Como sacar 2 tornillos se botaron la cabeza gracias

[@JohnsonsSmallEngines]

I'm glad it was helpful :)

[@jasonmyers2809]

When I run at full throttle, and engage the blades...the engine will run at reduced rpms for about 15 minutes. Then the rpms go up to where it usually runs as if by magic. It will stay perfect for the rest of the mow. But on the next mow? It does the same thing again for about 15 minutes. Would you have a good idea where I should start looking? Thank you, in advance!

[@JohnsonsSmallEngines]

It sounds like the throttle plate inside the carburetor may be loose. OR Governor needs to re-adjusted. I would check ther carburetor first.

[@jasonmyers2809]

@@JohnsonsSmallEngines Thank you, sir. I will check those in the order you stated. Never had symptoms like this with an engine ever...a self correcting condition really messed with my very basic skillset!

[@superdave4725]

​@@jasonmyers2809 change plugs...easy an cheap

[@jasonmyers2809]

Sorry it took so long to get back to you. Throttle plate and governor were OK. So the 1st mow out this season I mowed a half inch. The mower bogged way down...but this time the rpms never came back. I bet you know what's wrong with it now! And @SuperDave742 I always put a new plug in every year. Again, sorry to you both for the overdue update.

[@jasonmyers2809]

​@@superdave4725 I do change the plug every year. The pto was way out of adjustment. That was my problem. Thank you for the help, as well! Never get too much advice!

[@wdbrown7635]

Thanks…great info!

[@JohnsonsSmallEngines]

I’m glad it was helpful. Thank you for watching and the kind comment. Please keep this video I like subscribe if you would like and share my channel with your friends to help me grow. It would be greatly appreciated.

[@domenicdidomenico2338]

Great video!! 👍👍👍

[@JohnsonsSmallEngines]

Thank you! I’m glad it was helpful:)

[@domenicdidomenico2338]

@@JohnsonsSmallEngines Have a question. I have a 48" walk behind with a 15 hp Kohler it misses and pops set the coil gap with a business card and still does the same thing. Do you think the marks are off on the timing gears. Guy said he rebuilt the engine? Maybe he did something wrong. Thanks.

[@jaimeruiz5143]

Gracias por el video amigoThanks for the video Migo very helpful I do appreciate your time and definitely subscribe and follow all of your videos 100% recommended keep up the good work bro

[@JohnsonsSmallEngines]

Thanks for the sub! and watching, much appreciated :)

[@bobbysoto7328]

Hey....good job 👍

[@JohnsonsSmallEngines]

Hi Bobby, I'm glad it was helpful!, please give this a thumbs up, subscribe and tell your friends to help my channel grow. It would be greatly appreciated. Thank you for watching.

[@MrJeffinLodi]

Thanks for the great video. I have popping on one cylinder of a 24hp twin B&S. The push rod was off on one cylinder which seemed obvious. Put it back in, adjusted the valves to .04 and problem still occurs. I'm assuming a sheared key would affect both cylinder's performance. Could this be a bad valve adjustment still or possibly a bad ignition coil on that side? The popping gets worse with time (seems to run fine for 30 seconds or so) and gets worse, fairly quickly. The valve head on that side also seems hotter than the other side. thanks for any ideas.

[@JohnsonsSmallEngines]

If the push rod was out of position. Check to make sure it’s not bent, then you need to find out why it happened? Check the rocker studs to make sure they are not loose. Checked spark on both cylinders at the same time with two inline spark testers to make sure your ignition is ok. Check valve lash again. Install a new set of spark plug. If it still is popping and missing, you may have a valve seat came out of place and the only way to check is to remove the head to see. You may also have a valve guide that worked its way up but that doesn’t happen often.

[@LT.X380]

Very informative 👏.

[@JohnsonsSmallEngines]

I’m glad it was helpful! Thank you for watching and the kind comment. Please give this video a thumbs up, subscribe and tell your friends to help my channel grow. It would be greatly appreciated:)

[@ken3700]

I pulled the flywheel off the key was good.. two of the magnets on the flywheel were broke free.. has a new coil new battery fuel is okay

[@jj-tt6gl]

Great video thanks

[@JohnsonsSmallEngines]

I’m glad it was helpful. Please give this video a thumbs up and tell your friends to help my channel grow. It would be greatly appreciated. Thank you for watching and the kind comment.

[@Hutchy45445]

Great video btw 👍

[@JohnsonsSmallEngines]

Thank you

[@tonym6920]

Great job! Just curious, were the blades bent up, or was it just that flywheel bolt being loose that sheared that key. Thanks for the vid! 👍👍

[@JohnsonsSmallEngines]

Thank you! This time and most I have seen are from a loose flywheel bolt. Belts will give before the flywheel on tractors. I’ve seen a lot of sheared flywheel keys on walk behind mowers where the blade is connected to the crankshaft and the blade stops dead and the flywheel will keep rotating to shear the key.

[@rattanaknight330]

Hello Sir, i has been watching a lots of your repaired video you are doing a very great job. Sir I help your help I just bought a john deere L110 model everything is just exactly the same as in this video now I trying to start it up but it don't get no Spark. Can you Please help me, Thanks!

[@JohnsonsSmallEngines]

If you have a ignition spark tester? Check the spark after installing a new spark plug. If you have no spark, disconnect the ground wire from the ignition coil. Check for spark again. If you do not have spark. You have a bad ignition coil. Replace ignition coil.

[@rattanaknight330]

@@JohnsonsSmallEngines i just ordered a new ignition coil and should be here in Charlotte NC on tomorrow then I will install to see if it get spark. I'll let you know soon I finish install. Thank You so much Sir!

[@JohnsonsSmallEngines]

Sounds good.

[@rattanaknight330]

@@JohnsonsSmallEngines Hello Sir, i got it running now, It's a ignition coil. i really Appreciate a lot!

[@JohnsonsSmallEngines]

Glad to hear your back up and running!

[@nopriors]

Bravo!

[@JohnsonsSmallEngines]

I'm glad it was helpful