3. INSPECTION/ADJUSTMENT Mongoose/KXR 90/50 Turn the adjusting nut, to decrease or increase chain slack. Retighten the upper and lower axle holding bolts. Torque: 6.08.0kgf-m Adjusting Nut Drive chain cleaning and lubrication The drive chain is equipped with rubber O- rings between the chain plates. Steam cleaning, high-pressure washes, and certain solvents can damage these O-rings. Use only kerosene to clean the drive chain. Wipe it dry, and thoroughly lubricate it with SAE 30~50 motor oil. Do not use any other lubricants on the drive chain. They may contain solvents that could damage the O- rings. O-ring 3-18