Tractor won't crank

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  #1  
Old 06-19-08, 12:49 PM
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Tractor won't crank

I have a Bolens by MTD tractor with a B and S model 282H07 engine. One day I came out to start it up and the flywheel will not spin freely. I can get it to turn with a wrench or something but the starter cannot spin it through a full cycle. Any ideas??

Oh yeah, and it has plenty of oil, don't know why it would freeze up.
 
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Old 06-19-08, 04:02 PM
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How does it spin without the spark plug in? Shoot some 30 weight motor oil in the cylinder and try it.
 
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Old 06-19-08, 04:44 PM
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Electric starter?, which naturally would have to rely on a good battery and connections?

Does this machine have any sort of flywheel braking system?, that might not be disengaging?

You DID say you could turn it with a wrench. But this does not offer too much help other than the fact we know it is not totally locked up. We do not know the size of the wrench, nor your strength, nor the speed that you can turn it?
 
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Old 06-19-08, 09:27 PM
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Take the spark plug out, move the plug wire out of the way so that it cannot spark against metal of the engine, and see if it will spin. Be careful because gas may come spewing out if the cylinder is full of gas like I think it may be. If it is, the carb is leaking and needs to be cleaned and reconditioned.
 
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Old 06-21-08, 09:39 AM
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Update

Ok, so with the plug out it will spin, it seems like it is too much for the starter whenever it hits the compression stroke, ie thats when it stops with the plug in. I do not think its electrical. I have replaced battery and starter/cleaned terminals already.
I put a shot of oil in the cylinder too, it had very little effect other than shooting out all over the floor.

Anything else anyone can think of?
 
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Old 06-22-08, 01:02 AM
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You need to adjust the valve clearances. Set the clearance between the rocker arm and valve at .005" on both valves with the engine 1/4" past top dead center.
 
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