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Replacing drive belt

Craftsman YS4500 model 917.28734 Lawn tractor runs great, no sputters, but when i go up even the slightest incline in my yard, the mower loses power. Thought it was a fuel problem despite the engine never missing a beat. Cleaned to carb, replace fuel filter, still doing it. I found that if i disengage the gas pedal and reengage then it will go. Could this be the drive belt slipping? If so, is there a manual explaining the procedure for doing so?

Craftsman , Lawn Tractors , Lawn Mowers
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2 Answers from these members:
Manage My Life
There can be many possibilities as to why you may be loosing power on your lawn tractor. I researched your question and found someone had the same question about their lawn tractor. On the expert answer it does say the drive belt could be a possible issue so I have also provided you with the instructions like you requested. I hope this helps!
by Manage My Life
October 28th, 2010
Answered in 22 minutes
0 votes
Mark T
Thank you for being so detailed in the question.

I suspect the belt could be slipping. First, you should clean the debris out from the clutch mechanism. Grass can get packed up and cause the belt to slip. Please use the image below that shows the area of the tractor that should be cleaned. I recommend using a leaf blower or compressed air to remove the grass and dirt. After the area is cleaned, test the tractors operation. If it still slips, hook your foot under the brake pedal and pull it back when going up the hill. This will tighten the belt. If the tractor works like it should I recommend replacing the belt.

Here is a link to order any parts you need.

Sears Parts Direct


If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website:

Sears Home Services


If you need further assistance, please reply below with more details.

Thank you for using Manage my life.

Mark T.
by Mark T Earned 58,303 community points in Craftsman
October 29th, 2010
Answered in 15 hours
0 votes
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