Yamaha ATV
YFZ450 - Exhaust Cam RetardYamaha ATV - YFZ450
What will be describe in this Yamaha ATV YFZ450 manuals was what we call as "cam mod". Retarding the exhaust cam sprocket one tooth on the timing chain on Yamaha ATV YFZ450. By doing the cam mod on Yamaha ATV, it's will boost up power in the mid to upper range of the powerband. If you've added a kickstarter, this simple Yamaha ATV modification can make starting easier. It's just taking only about an hour. We recommend that you using an increase in pilot jet size along with this Yamaha ATV (we used a 48-pilot)