Model #917273646 CRAFTSMAN lawn, tractor

Question and Answers

Q:

My Craftsman lawn tractor model 917273646 backfired when turned off. Now it turns over but wont start.

A:

When an engine backfires loudly, sometimes it shears or partially shears the key underneath the flywheel. This allows the flywheel to turn slightly on the shaft and puts the engine out of time.

I would look at the keyway before attempting any other diagnosis.

To see and check the key, you need to remove the blower housing from the engine. Remove the nut that holds the flywheel on. If the slot in the crankshaft is lined up perfectly with the slot in the flywheel, the key is ok. If the 2 slots are misaligned the key is sheared.

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Jimmy K -
Sears Technician
July 13, 2009
Q:

hydro gear locked up

A:

Thank you for your question.

I am sorry you are having a problem with the tractor. By what you have stated I suspect the brakes on the tractor are stuck. I have provided you with an image below that shows how to adjust the brakes on a model similar to yours. First, locate the brake lever back and forth to make sure it is free. If it seems stuck, you can use WD-40 to lube it. Once you have it free, check the clearance when the brakes are released.

I hope this is help. Please let me know if you need further assistance on the repair of the tractor. 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 .

Thank you for using Manage my life.

Mark T.

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Mark T -
Sears Technician
June 23, 2011

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