Yamaha power loss
I own a 2017 Yamaha Quiet Tech, and when the engine was under load, it dropped power significantly. The cause was a clogged exhaust port where the spark arrester was located. Sound-deadening material was clogging the port. While I had the bottom tray off, I cleared the clog and pitched the spark arrester. This is a DIY project that is not too hard if you have a garage jack to raise the cart to get more work space.
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