Lawnboy commercial 21" pulling to the right.

[joed]

I have a 2006 lawnboy commercial 21" mower with the 190 cc Briggs and Stratton engine on it. The mower has been constantly pulling to the right while the self-propelled is engaged. I've had it into the dealer 3 times to correct the problem. The first two times, they said that had to fix some gears in the wheel and the last time, they had to clean debris/grass from inside the wheel. The problem still persists. Any solution?

[Restrorob]

Without a model number posted I'm guessing, Some of these have the rubber tire tread stretched over the plastic rim. Over time the rubber swells/loosens and slips on the rim.....

[dutch1]

My "guess" is that it's a model 22243. Rob is correct, I've seen several occurrences of the tire slipping on the rim.

Much depends on the thoroughness/knowledge of the shop techs as well. There is a plastic clutch washer and a neoprene/rubber friction washer that act together to engage the drive dog into the pinion. If the pivot arm is not greased frequently and I'd say every 15-25 hours, if used commercially, the plastic clutch washer will get hot. If this occurs, the pressure of the friction washer on the softened rim of the clutch washer will reduce the friction necessary to engage the dog. If the clutch washer has gotten hot, you will feel a sharp edge on the rim of the washer.I've seen this failure much more frequently that tire slippage on the rim.

Just my two cents.

If your model is 22243 here's the breakdown accessible at LB's website:

https://support.lawnboy.com/portal/s...ingDiagramPage

[dutch1]

Rob could be correct as I've encountered that situation as well.

My guess is that your model is a 22243, a three speed transmission and Briggs equipped. Following is a breakdown from LB's site:

https://support.lawnboy.com/portal/s...ingDiagramPage

Much will depend on the knowledge/thoroughness of the shop you use. More frequently I will find a failure of the clutch and friction washers that act together to engage the drive dog into the pinion. If the pivot arm is not greased on a regular basis, the plastic clutch washer will get hot and the pressure from the friction washer will push on the softened rim of the clutch washer creating a problem. You can readily identify a softened clutch washer by a sharp bead of plastic, around its circumference, where the clutch and friction washers butt up against each other.

In a commercial application, I'd say the pivot arm zerks need to be greased every 15-25 hours. If greased regularly, 2-3 squirts from a pump gun should be sufficient--more than that, you can blow out the friction washer.

Just my two cents.

[dutch1]

OOPS!

Sorry about that--I hit an unknown key and my message disappeared on the first attempt--so I started over. A brain fart apparently.

[piston slapper]

Originally Posted by dutch1

OOPS!

Sorry about that--I hit an unknown key and my message disappeared on the first attempt--so I started over. A brain fart apparently.

Hmmm.....that's one way to get your post count up...Ha Ha ha ha haaaa....

Good info Dutch...emoticons don't work on my 4g....back to the BBQ...
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[joed]

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[joed]

Thanks for all of the replies. The model number of my Lawnboy is 2243. Each of the times I got it back from the dealer, the unit would be ok for 1/2 a lawn and would then act up. I grease the wheels every 10 hours or so. That seems to help a bit but then the problem returns. It's very annoying as the only way to get it to track straight is to reduce speed. Can't afford to do that in this business. Should I take it to another dealer?
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[dutch1]

Joe, your model is 22243. Plug that number in to LB's website that I posted earlier and take a look at the breakdown of the transmission/wheel assembly.

If you're the least bit mechanically inclined it's a job that you can accomplish--it ain't brain surgery. PM me if you'd like further advice and I'll try to help you out. If you prefer to take it to a shop, feel free to do so.

Again, as Rob indicated, make sure the tire is not slipping on the plastic rim.

[ricky86]

Check the wheels for sure. That system works on friction. If you overgrease the drive, it can't work. Also washing will cause rust and do the same. The fittings are for the axle brgs and only require a small amount of grease. Basicly the drive should be clean and dry. Get a parts list off the Toro site and take it apart or find a dealer that is a dealer.
The system should be, and is for the most, part trouble free for years.