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self propelled does not work

craftsman self propelled, model 917.376536. wheels will not pull mower. i have taken mower apart, one wheel stripped on inside. so i am replacing the belt and wheel.

question is.....the pulley above the gear drive spins freely, but does not turn the axle below to the wheels when spinning. So is there a slip system in the gear box. or do i need to replace the gear box ???

thanks, drew

Craftsman , Lawn Mowers
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2 Answers from these members:
Joseph Perez
I am sorry that you are having some difficulties with your mower. I did some research and I was able to find a link that will provide you with some good information. Click


for the link. I hope this helps with your research while you wait for your expert response.
by Joseph Perez Earned 20,694 community points in Craftsman
April 27th, 2013
Answered in 13 minutes
0 votes
scott d
Thank you for your question. I'm sorry you are having this problem with the mower. There is not a slip system in this gear case. If the pulley is spinning free, it will indicate a problem inside the gear case # 424657 and it will need to be replaced. It will come complete with the pulley. I hope this will help you.
by scott d Earned 4,518 community points in Craftsman
April 29th, 2013
0 votes
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