1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 384Get this manual
ADJUSTING THE PARKING BRAKE ADJUSTING THE REAR SHOCK ABSORBER
iSlide the rubber cover to its original positionWARNING After this adjustment is performed, lift the rear wheels off the ground by placing block under the engine, and spin the rear wheels to ensure there is no brake dragIf any brake drag is noticed perform the above steps againLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
ADJUSTING THE REAR SHOCK ABSORBER 1Remove: seat Refer to "SEAT, SIDE COVERS, AND FRONT PANEL"2Remove: air filter case Refer to "REAR FENDER"3Adjust: spring preload