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Could use nail polish or a thread locker (loctite) as an alternative.

Useful Information

Adjusting the Belt

https://www.youtube.com/watch?v=XyPedy7HtzM

Lubricating the Belt

https://www.youtube.com/watch?v=q9dl_BM0L9M

https://www.youtube.com/watch?v=M8c1Jz4nqKQ

Testing a MOSFET

A simple test to determine if the MOSFET has failed is to check for open circuit between Drain and Source.

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