2004 Official factory service manual for Yamaha YFZ450S ATV Quad., Page 348Get this manual
UNSTABLE HANDLING LIGHTING SYSTEM EBS00552
TRBL SHTG
UNSTABLE HANDLING
UNSTABLE HANDLING Handlebar Improperly installed or bent Steering Incorrect toe-in Bent steering stem Improperly installed steering stem Damaged bearing or bearing race Bent tie-rods Deformed steering knuckles Tires Uneven tire pressures on both sides Incorrect tire pressure Uneven tire wear Wheels Deformed wheel Loose bearing Bent or loose wheel axle Excessive wheel runout Frame Bent Damaged frame Swingarm Worn bearing or bushing Bent or damaged
EBS00553