The lawn mower drive belt keeps coming off

[AndreW]

I have a Husqvarna ride-on lawn mower. It works fine until I finish mowing and connect a hose to wash the underside of the deck. When I lower the deck by 1 inch, it runs for about a minute, and then the belt pops off.

I’ve tried it without using water, but the result is the same. The belt comes off the same inner pulley—not the ones that drive the blades. What is the solution to this problem?

[Mous Kopert]

Lowering the blade height can cause some issues by introducing tension to the system, sometimes causing the belt to become tight or the inner idler pulley to be worn. The heavy duty 587686701 replacement belt for Husqvarna will give you a good grip back with its tough aramide cord design, making it highly resistant to stretching due to sudden tension change.

[Author]

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