Question about Craftsman 20 Hp 42" Deck Lawn Tractor
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Posted on Jan 02, 2017
Hi Jeff, If you look at the deck, one or more of those pulleys is a tensioner, It pushes against the belt to tighten it, The rest of the pulleys can be identified by the fact that they only have a bolt through the middle, whereas the tensioner is mounted on an adjustable arm with a slot to allow adjustment. It should also be the only one that the belt doesn't go around the pully it just pushes on one side.If the tensioner arm is all the way to the end of the slot, the belt is streched and will need replaced but sounds like it may have come loose. Some of these decks also have a spring on the tensioner arm and those come off from a stick or other debris. Check it out and if you have a problem let me know and I will try to come up with a diagram. If your mower is that new there should be a belt diagram on the deck. i will need a model number of the deck or mower for that. Good luck!
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Posted on Mar 29, 2009
Check for burnt fuse behind dash. If no burnt fuses check if getting power to magnetic clutch mounted on bottom of engine crankshaft. Make sure wires are not broken by magnetic clutch. Make sure the safety seat switch is working. Make sure you are sitting on the seat when you try to engage the blades. If that does not work try pushing and wiggling the seat sensor. Check make sure wire is attached to safety switch under seat.
Posted on Apr 08, 2009
maybe the safty switch under seat might be starting to go out if that switch doesn't work the blades wont come on at all for safety
Posted on Jun 28, 2009
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