Blade will not engage

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Craftsman Riding Mower

Repair information and troubleshooting for Craftsman-brand riding lawnmowers.

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Kerry Neves @yrrek

Rep: 1

Gepost: 20 feb. 2016

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Blade will not engage

I have a 42" lawn tractor (Mod. #247.28901). I was mowing and heard a loud pop. The deck belt cover (metal) on one of the pulleys had broken. I replaced it, but now I can not get the blade to engage. When I move the lever forward, it pulls the pulley correctly to give tension, but it is too loose to engage. I have compared the belt to a brand new one, and it has not been stretched. I can't see any other damage to the deck or the pulleys. Can you suggest where to look, or what to do? Is there a sheer pin somewhere? Could something have been bent? The tractor will roll fine, but I have no blade movement.

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Brian Manuel @bouzeo Rep: 91 3 · Answer 1 · 2016-02-23T23:08:00-07:00

Brian Manuel @bouzeo

Rep: 91

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Gepost: 23 feb. 2016

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Don't know the make or model but the first thing I would do is take the deck off and fully inspect the damage. Once the deck is off ,look under the mower while running and engage blade ( no blade ,deck is off !) if the pulley that drives the belt turns then you are fine w the drive part. If not a sheer pin is the case on the pulley drive shaft. My guess is one of the slave pulleys got a sheer pin or damaged so it won't turn. Other than making sure you are routing your belt correctly and right size , not much else there. I'd say you damaged a slave pulley or even the deck so the blade won't turn. Turn by hand to see if any problems after you get the deck out , you should get it from there.

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