Most people have had success with this video, but if you are one of the few who hasn’t, you may need a deeper carburetor cleaning. One example of that process can be found in another video of mine, here: kzfaq.info/get/bejne/ntWCnJNerLSmpZ8.html

After my Lawn Boy died on me (like it seems to about every year), I used to have it repaired locally. Those guys charged $115 (they did pick up and deliver back), and I was getting tired of the routine. Went out and bought $11 worth of starter fluid and carburetor cleaner spray. It jumped right back to life! Thanks, Hans for putting me on the path...I appreciate it!

I don't really comment on anything online. Thank you very much. i almost threw my lawnboy lawn mower. i bought it brand new but it stopped working after using it for 3 times. so the mower was sitting in my yard for more than 2 years. But today, before throwing it, I saw your video, and I should give it a try. I checked the oil, the gas tank, and air filter and sprayed it. And Wow! it worked. Thank you so much. I highly recommend it.

I purchased a 1972 Wheelhorse and was having that same issue. Being a mechanic in the military 1974-78 plus working on all of my own internal combustion engines 4,6,8 cylinders, 2 and 4 cycle, I thought i was a pretty good mechanic. This wheelhorse was driving me bonkers. After trying all of the steps that you did plus some of my own, it would run for a little while and then back to the rough running / idling. I decided to purchase.a carburetor. The carburetor was around $15.00 and when I PUT IT ON I COULD POP WHELLIES WITH THE TRACTOR! As cheap as these carbs are if you're stumped as I was purchase a new heart for your machine!

Many thanks! I thought you were working on my mower - especially when you first whipped out the starting fluid! I've had EXACTLY the same problem. I'm on my way to pick up a can of carb cleaner to see if that will work. BTW, I did check the auto choke - perfect, and the visible throat of the carb. looked clean enough to eat off of. The fuel is fresh and flows freely from the tank. I really appreciate the video, and at least know I'll have tried everything before taking it to a shop or something. Thanks again!

This is exactly what I needed. Lawn mower started up after using both sprays and runs strong. Thanks

I fixed my Lawboy today, following your procedure in the video. THANK YOU!

Thanks for the video. I always wondered who would do that. Not why. I've owned several lawn-boy mowers. I used a local repair shop that was familiar with Lawn- Boy issues. I keep one now to loan when my friends have one out for repair. After I had all my turf removed and replaced. With black lava sand from Hawaii and red pumice out of Arizona for walkways.

Did the exact same thing you did, same results! Thank you!

Thanks for the video. Just got my mower running. I would recommend eye protection though. I had my chainsaw eye wear on and some starting or carb cleaner shot back to my eyes. Many people watching your video are clueless as myself. Probably not more clueless though. Was going to take the bowl off and clean the jets and I don't think I needed to do that.

I had a 3year old lawn boy sitting in the garage for the last five years. Wouldn’t start. I followed your procedures and ended up using an air compressor and it worked. The lawn mower started up with the first pull. Thank you!

Wow - you fixed my mower with the Honda engine! Followed every step as you did - remove air filter, starter fluid, ran for qa few seconds then stopped. Got the Gumout spray, had a friend hold the bail while I sprayed while it ran. Had to play with the choke a little to keep it running while the Gumout did its thing, then mowed the lawn. Where do I send the check - thanks!

Great video.

After the third pull, you're supposed to start cussing at it.

Thank you! This fixed my mower.

Thanks, saved my lawn mover!

Thanks you saved my life! I got a lawnboy because of the guarantee start but it gives me trouble every year. Never going to buy another lawnboy.

Excellent help. Thanks so much!

I bought a lawn boy push mower on Saturday. Was impressed with the first pull start at the true-value store. Drove 90 miles home and unloaded. Started first pull. Mowed a bit, shut it off and it wouldn't even try to start. Next day it shuddered to start, smoked then ran. Another shut down and again won't start. Have done this 3 times. Right now it's in the pickup and going back to, argue with the store. I'm a 66 year old woman who can't keep doing this. Am glad I found your video, and will be buying the fluid and cleaner to try and have on hand. And most likely will try it, as stores don't like returns, when they only carry a few items. I really expected better of a new $300 machine. But reading reviews tonight, seems many of the new ones have the same issue 😩 Thanks for your video

My guy I think you just saved my mower. It has been 3 years since it could get started. I just followed your video just used the starter spay same results as you on the way to get the carb cleaner. Wait now I have to cut the lawn :(

PA LAWN GUY> When you operate a mower engine on starting fluid the cylinder of that cylinder is washed of lubricant and you probly put at least a season of wear on the cylinder.

100% worked! THANK YOU!

Nice. I have fixed a half dozen mowers in the neighborhood since we moved. I am surprised how many have no mechanical aptitude anymore.

Where at behind the filter do you spray the starter fluid? Carb cleaner?

Thanks so much for this video. Spraying carb cleaner and starter fluid get it going for a bit but won't stay running. Thoughts as to what we should do next?

nice. mower should start also with just carb cleaner, its flammable enough, i never use starting fluid but everyone has their own methods, if the result is the same it really doesnt matter. good work.

Thanks... worked great...

My 10515 lost 3rd gear and is losing 2nd, with a rhythmic grinding preceding loss of gear. It still runs fine in first, but shifting is a bit stiff. I figure this is either a slipping pinion gear (in the trans, not the wheels) or shift keys, any idea which is more common or more likely? What are the most common and likely failures in the Lawn Boy 3 speed gearbox? I had the cover off and the ring gear looked good, I should have taken it out to look at the pinion while I was there, but regret assuming that the good looking ring gear meant the pinion must be good as well.

What kind of car cleaner did you used, name and brand, I have the same problem with mine.

Thank you sir.

I hope mine is that easy to fix. Must admit it was not cared for. Worked for 3 years and now won’t start. Ran until the backyard was cut then quit before finished. It wasn’t missing or running rough but, sounded a little weak, not loud as usual. I hope some starting fluid and carb cleaner works! Fingers crossed 🤞🏾.

Using my compressor to shoot air in the gas line revealed that there was a hole in the gas line. I replaced the part and saved my mower!

Mine will run for a while and then just not restart after dumping the bag. Almost seems electronic because the key start won’t try to start either when I have this problem

I've tried all of the above, plus replacing the spark plug and filter, cleaning out the carburetor, putting fresh gasoline in and it still wouldn't start. I suspect the ethanol-based gas could be gunking up the machine, too.

Here’s is an easy way to help prevent/avoid this kind of problem... 1. Use gasoline that is as close to being ethanol free as possible. Ethanol added to gasoline will shorten the life span of standing gas over long periods of time...the old gasoline will be insufficient to fire the spark plug. This is especially true for equipment that has sat idle from one season to the next... snow throwers to lawn mowers. 2. Solution...Use a gasoline treatment stabilizer such as STA-BIL:FUEL STABILIZER TREATMENT added to your gas can. Once added and thoroughly mixed, the treated gas is then added to your equipments own gas tank. Now start the engine and let it run for several minutes so that the treated gas has a chance to go through the fuel system (carburetor and plug). You should now be in good condition for a one or two pull start the following season. 3. If after doing this seasonal preparation you somehow are still experiencing starting problems...I would then follow the valuable recommendations as shown in the video!

Well just tried starting fluid, gas drained, new spark plug, new air filter and still nothing. Only pulled 4 or five time so I am charging the battery see if it can give a few more cranks than my back can. I drained the bowel also, but I did t check the filter while off. Exact same mower. Anything else you or an Yorker can suggest (sans repair shop/buy new mower)? Any thoughts appreciated 😀

I have the exact lawn mower and I'm having a problem with it now being that I'm a female I don't really know what to do about some starter fluid and it still won't stay cranked do I need to get carburetor cleaner I just don't know I need help

I hope Mines that easy lol. Just bought one at an auction. Wants to run but sputters.

Wow you was struggling with that gas cap lol

Fresh gas, new airbox new spark plug new carburetor. Started 1st pull then stopped then 30 pulls to get it to go

My lawn boy is doin the same thing at the start of the vid. However when I get it started, it idles and kind of kicks around. 🤷🏼‍♀️

How many cycle has that mower any one know ?

I'm not sure, but it seems like an auto choke issue ?

Where’s the link To Amazon the the coil. Thx.

Why does it always look like you're spraying the Air filter holder rather than any specific part?

Brand new Lawn Boy push mover it won't start.

Ura, you got lucky.. not everyone has a mower that clean and get it running on a third of a can of starting fluid.. same mower broken recoil rope, spring hi it trying to get running, then no spark, yada yada yada.. ready for the scrapper imo.. wtf roflmao

Admit it your not a mechanic and don't wanna get you're hands dirty 😏

20+ year lawnboy owner here. These are the biggest pieces of junk. Carbs are the worst, every other year carb needs to be rebuilt. I would never recommend buying and when it does fail to start, and it will happen just throw it away and cut your losses

how to repair in 5 minutes video duration 8 minutes and 40 seconds

Well the first 5 min was stupid Lol

why do you keep looking around (glaring) everywhere. Really weird. Stay from in front of the camera...or deal with the camera.

Are you spraying the carb cleaner and starter fluid in the same hole?

Thank you Brother for sharing your information.

Great video.