3. INSPECTION/ADJUSTMENT Mongoose/KXR 90/50 Inspect the wheel. Replace if damage or bends Always balance the wheel when a tire or wheel has been changed or replaced. · Never attempt even small repairs to the wheel. · Ride conservatively after installing a tire to allow it to seat itself properly on the rim. 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 (A). Adjust if out of specification. Drive chain slack: Approximately 10~20mm Bolts Adjust drive chain slack: Elevate the rear wheels by placing a suitable stand under the rear of frame. Support the machine securely so there is no danger of it falling over. Loosen the upper and lower axle holding bolts. Hub Stopper Nut 3-17