Troy-Bilt Self Propelled Lawn Mower Problems and Belt Change [Won't Propel] 

There are a few videos here about this mower and this belt. This is the best one. This guy actually knew what he was doing. The other guys were just stabbing around until they got the machine apart. Clank! Boing! Ouch!

I have re-watched this video a few times and can not thank you enough because I had mine (same model) slip off the front pulley. Did exactly what you said to do and now it's running better than ever. I paid $100 for this Troybilt a few years back and has been truly the best mower I ever had. Thank you, thank you, thank you 😘

My belt had slipped off. Easy fix thanks to you and my one rachet.

Thanks for the tips! For me the belt came off. Cleaned it all up, put the belt back on and it was running again.

Excellent video. Very clearly stated. Without the drive unit working in St. Augustine grass down in FL - this mower is nearly useless! :-(

Excellent video. Thanks. I’ve already had this problem before and this video was invaluable.

thank you, it was very easy to follow your instruction, keep up the good work.

Wow, thanks for sharing your knowledge and tips: I hope my lawnmower will easy for me. I picked up a 2011 Troy-Bilt Model #12AGA26E011, Serial #1A191KC0892, from my neighborhood Curb Store approximately 10 months ago. I have been slowly making progress as life permits me: initially the lawnmower wouldn't start with the key ignition because it needed fuel. I added the gasoline and I was able to start the engine with both the key and pullcord. We were heading into winter, so I stowed it in the garage. Winter came and past then spring arrived and I decided to work on the lawnmower in the middle of spring. In mid May 2023, I found the correct charging cable that was with the lawnmower and attempted to charge the battery, but it wouldn't hold a charge. I removed the old battery, a Duracell DURA12-5F 12V 5Ah Ultra AGM Sealed Lead Battery and installed the new battery, a Lithonia 12V 5Ah AGM Sealed Lead Battery. I poured a small amount of gasoline into the fuel tank and tested the key ignition and it started . I think 2 days later, I removed the charging cable and plug from the lawnmower, removed the air filter and inspected, I removed the engine cover, cleaned dirt and debris from the assessible parts. I disconnected the ignition cables and reconnected the cables and reassembled the engine cover and air filter. I changed out the engine oil by tipping over onto the side, then with the lawnmower upright I added fresh oil and approximately 2 oz of Marvel Mystery Oil, I added gasoline to the fuel tank, I reconnected the battery and attempted to start the engine with the ignition key and it failed to start - I could not get it to start with the pull start either. I once again stowed it in the garage thinking that I may have broke it. Approximately 6-weeks later I decide to take another stab at the lawnmower. I disconnected the ignition cables from the connection points and reconnected them back - kind of like disconnecting the cables to the my computer's hard drive and reconnecting it. I removed the battery and 40-amp fuse then reinstalled the batter and fuse: I then connected the new battery to the terminals hooked it to the charging cable for 24-hours. In hindsight, I should have changed the oil first before I put gasoline in the fuel tanks because unknowingly I flood the carburetor. This past Saturday, July 01, 2023, I topped off the gasoline tank and test started the lawnmower with key ignition - it started, but then I learned that the self-propelled power on the front axle was not engaging.

When removing the blade do I need to just disconnect the spark plug or completely remove it? Love your show, great help. I’m not mechanically inclined. You make it simple and straightforward. Keep it up👍 ! I give you 5 ⭐️’s…

Excellent video

Do you have a video of how to adjust belt drive cable

I have a 2007 Troy-bilt self propelled 675 series mower and I've had to recently learn about all this as the belt broke. My transmission cover has only 2 screws and the retaining clip is a single. The belt is guided by two flanges from the pulley mount. The plate under the blade is actually metal. The front wheels level lever are also metal. Just differences I'm noticing in design. The design was simpler in 2007 and some parts I wouldn't think would be replaced by plastic have been. Interesting to see and wonder how much life there is between the two designs per part.

Your awesome my dude! Thank you very much!

EXCELLENT video.

Great video, thanks

Thanks for your help

I have belt issue problem is i dont have that drill and i dont know what manual toos are required. Will wrench work?

Thank you very much!

According to the manual for the model in the description the belt is 754-04259A

My front wheels got out of alignment. I lined all of the plastic tabs up right and it immediately got back of. I've attempted to fix it 3 times and can't figure it out. That's the only thing I dislike about the front height adjustment being together instead of each wheel independently.

thanks heaps !

My new belt is to loose , the old belt was the wrong one but did work . How do i tighten

what kind of blade adapter did you get for it?

How far can I tilt the mower if there is gas and oil to get under to check the self propelled belt is on?

Mine is leaking oil from the transmission. Is there a way to add oil? It's only 4 years old and is always kept in my garage.

Do you know what can cause the self propel to stay engaged?

thank you very much

Belt size is needed can you help me that thanks awesome video

The belt keep coming off on mine could be the transmission?

hmmm. mine has the belt going to the back wheel. My adjustments are all the way as far as they can go. Cable stretched? Belt stretched?

I had the guy fix mine, and the fix lasted 20 minutes and the propeller didn't propel any more. So what's up with that?