How to Tighten a Motorcycle Chain?
2 Answers
Methods for tightening a motorcycle chain: 1. First, loosen the clamping nut under the frame, then tighten the adjusting nut. Adjust the rear disc brake pad to about 3 millimeters from the wheel rim before tightening the clamping nut; 2. If components such as the brake lever, short pull rod, or rear pull tube are loosely fitted, or if the rear crank spring has too large a spread angle and weak elasticity, loosen the brake tightening screw; 3. Use your left hand to lift the rear pull tube upward, bringing the rear disc brake pad closer to the wheel rim, then use your right hand to pull the short pull rod on the handlebar downward until the short pull rod and rear pull tube form a straight line. Finally, tighten the brake tightening screw, and the small chain can be tightened. After being used for a period of time, the motorcycle chain will become loose and needs to be adjusted as soon as possible, otherwise, it is very dangerous if it falls off midway.
I often adjust my motorcycle chain myself to save the cost of going to the shop. First, make sure the bike is securely parked on the center stand or paddock stand; a loose chain can rattle and be dangerous. Prepare the tools: use a wrench or socket wrench to locate the rear axle nut and adjustment bolts. Loosen the axle nut slightly, but don’t remove it completely; turn the adjustment bolts on each side to move the wheel backward and tighten the chain. Measuring the slack is crucial: push the chain at its midpoint with your finger and observe the up-and-down movement—typically 1 to 1.5 cm is ideal. Too tight and the bearings wear out faster; too loose and it may skip. Adjust both sides evenly to ensure the wheel stays straight; use a ruler or eye alignment for accuracy. Finally, tighten the nut, start the bike briefly to idle, and recheck the chain. Apply chain lubricant to prevent rust, and make it a monthly habit to significantly extend its lifespan.
