Maybe the PTO needs rebuilding. The springs goes bad and the disc becomes worn. A worn PTO, there can be lack of adjustment capability.
The PTO bearing could be bad or it could be wrong position on crankshaft. It should be flush with end of the crankshaft.
Bill
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Two 125's and a 124 all with 42" decks
Plow blade
#2 Cart
QA36 snowthower
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