One thing I truly love about the Fuzz-9 is its engine. I don’t think anybody who has ridden an FZ-09 hasn’t loved the engine. It’s simply a fantastic powerplant with absolutely no drawbacks in terms of performance. Horsepower and torque are served up in abundance at all rpm, with a side of aural excitement. The motor was trouble free, though the clutch did give me a few slipping fits after heated wheelie sessions, and in the last 1,000 miles or so I’ve noticed a rattling noise from the right side of the engine between 4,000 and 5,000 rpm. Web research reveals similar complaints from owners of 2014 Fuzz-9s, with the problem reportedly stemming from the cam-chain tensioner. Yamaha is aware of the issue and encourages owners to visit their dealer to have the tensioner adjusted. It’s a good thing to have checked while you’re getting that ECU reflash.