Model #543 Porter saw sabre

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Question and Answers


My Craftsman lawnmower, model 917 377 543, will not move with the self propeller on. It works fine without self propelled engaged. Why?


You might have debris inside the dust cover on the wheels causing the pinion to bind. You could also have some bad gear teeth on the pinion or the inside of a wheel binding the gear box.

Remove both front wheels and check for wear or debris. Remove the belt cover from the front of the deck and check the belt for wear and tightness.

Turn the input pulley of the gear box to see if the gears inside are locked.

I think you will find your problem in one of these areas.

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Jimmy K -
Sears Technician
July 20, 2009