1997 Yamaha YFM600FWAK ATV Service Manual, Page 67Get this manual
VALVE CLEARANCE ADJUSTMENT ENGINE
VALVE CLEARANCE ADJUSTMENT NOTE:
The valve clearance must be adjusted when the engine is cool to the touch Adjust the valve clearance when the piston is at the Top Dead Center (T.D.C on the compression stroke1.Remove: Seat Front carrier Front fender Fuel tank Refer to "SEAT, CARRIERS, FENDERS AND FUEL TANK"