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My idler pulley bolt keeps breaking off,there is also a lot of vibration on the deck.What could be the problem?

snake1953 said:

My idler pulley bolt keeps breaking off,there is also a lot of vibration on the deck.What could be the problem?

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Maybe you could post model# serial#

Check the blades maybe be bent or a chunk gone on one if them.

Take the belt off and spin the blades do the make noise?
Try to wobble them up and down.

Is it the front idler pulley or the back one?