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I just acquired a 21199 serial 4008… The guy I got it from said he was trying to fix the transmission. Problem being a loud screech when the transmission is engaged. He said he replaced the belts all 3 of them and it did not help. His take was that the transmission needed to be replaced and he didn’t feel up to the task. I started looking at it and it does schreech but it seems to me like it pulls a lot harder/faster on the left wheel, to the extent that the mower pulls strongly to the right.
Anybody ever see a problem like this? I suppose it could be an internal issue with gears in the gearbox. It does seem like the transmission belt is very tight but I did not have a lot of time to troubleshoot the problem. I will be spending some more time on it tomorrow. Any thoughts welcome and appreciated

Spit

Hello C.,

Sounds like a bad bearing #8 in the part view

Auto Doc's said:

Hello C.,

Sounds like a bad bearing #8 in the part view

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Do you suspect both bearings would be bad? I see there is a 3rd bearing in the center that supports the shaft is that potentially an issue?

Hello C.,

If you are tight of funds, only replace the obvious bad parts. Otherwise....

"Never seen anyone get half a haircut". (A phrase an old tech used when I was a just starting out many years ago)

I recommend any/all bearings that have been exposed and used the way these have been, should be replaced.

Good point Nobody replaces just the one shoe that the heel fell off of…you get a new pair