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Mower has gone thru 3 belts in the last 3 months of use. Everything looks aligned (pulleys) and tight.
Any suggestions for what to check/look for?
 

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Did it just start or did you replace a belt,then it started.
Check idler pulleys,when the bearing goes they seize up as they heat up.
Check for proper routing,be sure the belt isn't rubbing on any pulley guides.
 

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+2 on idler pulley check (when running and up to op temp).

And, if the idlers are plastic (some are) consider replacing with a quality metal pulley with a better sealed bearing (check Grainger, McMaster Carr, or Motion Industries)
 

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Just as TJR345 says - you need to take a close look. With the belt off use a straight edge on the pulleys between each other which will show if any are out of kilter. Spin each one by hand and feel for resistance or wobbling.
 

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All the deck pulleys are metal. Check belt guides for rubbing. Another area is the deck adjustment bolts. They sometimes rub the back of the belt when the deck is raised up. They can be trimmed if they are rubbing. This happens mostly on the right side but check both sides to make sure. Depending on deck size and serial number some of these belts are quite long and will whip if the pto is engaged at high throttle.

Sent from my LGL52VL using Tapatalk
 
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