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blades wont engage

i have a craftsman lt1000 riding mower model 917.272674 i cant get the blades to engage. there seems to be a lot of slop in the cable before it starts to get hard to push up to engage the blades.but the silly part is if i drive the mower with the blades engaged they will all of asudden kick on and stay on when i hit a bump? any kind of help would be helpfull! thanks!!!!

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Craftsman , Lawn Mowers
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Manage My Life
The riding mowers are great for yard work. It can be concerning having a problem with the blades not engaging. I did some research on managemylife.com. I found a couple of questions similar to yours. I am adding the links below to assist you unit your expert can answer your question. I am also adding a link to the owners manual, on page 30 it gives some information that may help you. I hope that this information will assist you.
by Manage My Life
March 19th, 2012
Answered in 9 minutes
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Mark T
Thank you for your question.

I am sorry you are having a problem with the tractor. If the mower deck will not engage when you lift the lever, I recommend checking the idler assembly on the deck. Often times the pivot will rust over the winter. To loosen the pivot you will remove the mower deck from the tractor. The instructions for removing the deck are in the manual towards the back. Once you have the deck removed, remove the pivot bolt on the idler. The image below show the bolt that needs to be removed. Then use a wire brush to remove any rust on the pivot and idler. Once you have the idler cleaned look at the cam area of the idler plate. The cam area is what pushes on the brake arms to release the brakes. The cams should be smooth and the rollers on the brake arms should be round without any flat spots. If either looks worn, you should replace them. If you need to order the parts, click on the following link.

Craftsman tractor model 917.272674

If the parts look ok, spray the parts with wd-40 and reassemble the deck. Then move the idler back and forth by hand. If it is moving free, go ahead and reinstall it on the tractor. This usually cures the problem. If you need further assistance, please reply below with more details.

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

.

Thank you for using Manage my life.

Mark T.
by Mark T Earned 1,713 community points in Craftsman
March 21st, 2012
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