Your chain delivers every bit of power to the ground. A dry, gritty, or loose chain robs you of drive, wears out expensive sprockets, and in the worst case can snap or jump off. Ten minutes of upkeep keeps the whole drivetrain alive.

Cleaning

  1. Put the bike on a stand so the rear wheel spins freely.
  2. Scrub the chain with a dedicated chain cleaner or kerosene and a grunge brush — get into the rollers, not just the outside.
  3. Wipe it down and let it dry before lubing.

Avoid harsh solvents and high-pressure washers aimed straight at the chain — they blast out the internal grease and force water into the rollers.

Lubing

Apply chain lube to the inside of the chain (the side facing the sprockets) while slowly rotating the wheel, so centrifugal force carries it into the rollers as you ride. Hit the whole loop, then let it set for a few minutes before riding so it doesn't fling straight off. Lube after every wash and ride.

Adjusting Slack

  1. Check your manual for the correct slack (commonly around 30–40 mm measured midway between the sprockets, but verify your spec).
  2. Loosen the rear axle nut, then turn the adjuster bolts on both sides equally — match the alignment marks so the wheel stays straight.
  3. Set the slack, confirm both sides match, then torque the axle nut to spec.

Too tight is as bad as too loose — a tight chain binds the suspension at full travel and overloads the countershaft bearing.

When to Replace

  • You can pull the chain noticeably away from the rear sprocket.
  • Sprocket teeth look hooked or shark-finned.
  • Tight spots remain even after cleaning and lubing.

Always replace the chain and both sprockets as a set — a new chain on worn sprockets wears out fast.