John Deere STX38 Yellow Deck


Old 07-03-07, 07:34 AM
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John Deere STX38 Yellow Deck

I keep breaking the belt to the mower deck from the engine. I am using a NAPA 4L590W belt. They last about 4 hours and then break. This is the third belt in a matter of 3 weeks. What's causing them to break?
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Old 07-03-07, 08:18 AM
BFHFixit's Avatar
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Pay the bit more and purchase an OEM belt from John deere. I have rarely found aftermarket belts that work painlessly. In my opinion its simply not even worth the effort vs. the $

If you are breaking belts you may have a routing, obstruction, pulley...problem. Does it slip, squeal or smoke? Lug the engine down more than normal?

Last edited by BFHFixit; 07-03-07 at 08:24 AM. Reason: breaking belts?

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