3. INSPECTION/ADJUSTMENT ATV 300/250 DRIVE CHAIN SLACK ADJUSTMENT Before checking and/or adjusting, rotate the rear wheels several revolutions and check slack at several points to find the tightest point. Check and/or adjust the chain slack with the rear wheels in this "tightest" position. Too little of chain slack will overload the engine and other vital parts; keep the slack within the specified limits. Place the machine on a level place. Wheels should be on the ground without the rider on it. Check drive chain slack. Adjust if out of specification. Drive chain slack (A): 30 ~ 40 mm (1.2~1.6 in) Adjust drive chain slack: Bolt Bolts Loosen the caliper holder bolt and two axle hub holding bolt. Driven Sprocket Pin Provide a proper pin and pass the pin through the axle hub and driven sprocket. Axle Hub 3-16