The Yamaha Raptor 660 sport quad online manual provides service, repair and maintenance information for the following Yamaha four wheelers:. Valve Clearance. External Components Front Bumper Handlebar Cover Handlebar Seat Front Fender Footrests Rear Fender Exhaust System Skid Plate. Engine. So I'm new in valve adjustments, I've done them in the past and its been a fat minute since. My question is when doing the adjustment, and using the feeler gauge intake is 0.10mm -0.15mm, the exhaust is 0.15mm- 0.20mm. Do the valves have to be adjusted to the smallest feeler of 0.10mm so it has.
Watch this video to learn how to check and adjust valve clearance on a Yamaha Raptor 660.. I have a 660 Grizz and Raptor and the clearance has never gone out of spec on either one of them. Also, it is not necessary to remove the valve cover or pull starter to check the clearance. There is a cover to remove for the intake valves and 2 plugs for the exhaust valves. Just pull the plug wire and bump it over with the starter.