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  #1  
Old 06-25-2005, 11:31 PM
flywheel220 flywheel220 is offline
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belt popping off pulley

Hi,
My murray riding lawnmower has been tearing up my belts. The belt that powers the blades will pop off all pulleys after 3 minutes of cutting grass. When I try to put it back on I notice that each time it pops off there is a cut in the belt. It even gets jammed between the belt guides. How do I solved this? I'd hate to buy a belt every 3 minutes!
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Old 06-26-2005, 12:20 AM
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Smalltimer1 Smalltimer1 is offline
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Have you checked to make sure you have it on correctly?

Also are you sure you have the correct size?
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  #3  
Old 06-26-2005, 12:40 AM
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PLM-1 PLM-1 is offline
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There could also be a spindle problem. Do they all spin free? Tight?
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Old 06-26-2005, 06:53 AM
LawnScapers of Dayton LawnScapers of Dayton is offline
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also it could be too tight or too loose.......
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Old 06-26-2005, 07:03 AM
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Restrorob Restrorob is offline
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Make sure your deck is level,If the front is too low it could cause this problem,Also check the idler pulley bracket for up & down movement,There is a step bushing that wears in there. Lastly check all belt guides for proper adjustment.
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Old 06-26-2005, 12:35 PM
flywheel220 flywheel220 is offline
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belt popping off pulley

I have the correct belt, I've just replaced the bearings in the mandrel housing. The deck appears to lean towards the front of the mower too much. How do I make it level? I don't know about the belt guides, however the belt goes on easily on all pulleys except the engine pulley. It is a little difficult. The belt tension is rather loose compared to my other mowers.
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Old 06-26-2005, 07:30 PM
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Restrorob Restrorob is offline
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Quote:
Originally Posted by flywheel220
I have the correct belt, I've just replaced the bearings in the mandrel housing. The deck appears to lean towards the front of the mower too much. How do I make it level? I don't know about the belt guides, however the belt goes on easily on all pulleys except the engine pulley. It is a little difficult. The belt tension is rather loose compared to my other mowers.
The belt is probably too loose because of the deck tilted down on the front,If you post the model number off your unit I can look it up,Then I can tell you how to adjust it back up in front.
Different models have different adjustments.
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Old 06-27-2005, 09:37 PM
flywheel220 flywheel220 is offline
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belt popping off pulley

The model number is 42703A.
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Old 06-28-2005, 12:23 PM
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Restrorob Restrorob is offline
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Quote:
Originally Posted by flywheel220
The model number is 42703A.
Ok, On each side of your deck is a rod that runs up to a bracket under the running boards. Lower the deck and remove the clips holding the adjuster then raise the front of the deck by hand and slide a board or something under to hold the deck up slightly higher than level. Then move the adjusters on the rods so they will slide back in the holes and install clips. Adjust as needed to level the front.
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Old 06-28-2005, 09:46 PM
flywheel220 flywheel220 is offline
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belt popping off pulley

Thanks a million! I'll try this tomorrow evening since I work full time.
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