The chain takes the power from the engine to the rear wheel and is exposed to dirt, water and road salt along the way. Good motorcycle chain maintenance means a smoother ride, lower fuel consumption and a much longer life for the chain and sprockets. The effort is small: a few minutes every few hundred kilometres. Here's how to clean, lube and adjust your chain.
How often?
| Job | Interval (guide) |
|---|---|
| Lube | every 300–500 km, straight after riding in the rain |
| Check slack | about every 1,000 km and before every longer trip |
| Clean | when dirt and old grease visibly build up |
| Check wear | at every service and during the spring check |
The exact values for your bike are in the owner's manual. They always take priority.
Cleaning the chain
Modern chains have O, X or Z rings that keep the grease inside the links. These seals are delicate. So:
- Use a dedicated chain cleaner or paraffin, not brake cleaner.
- No steam cleaner or pressure washer, the jet forces dirt into the seals.
- A soft chain brush or a rag is enough. Let it dry properly afterwards.
Lubing the chain properly
It's best to lube the chain after a ride, when it is warm. The lubricant then creeps better between the links. Spray the chain lube onto the inside of the lower run, where the chain runs on the front and rear sprockets. Centrifugal force spreads it outwards as you ride.
Let the spray set briefly before the next ride, otherwise it flings onto the rim and tyre. Wipe off any excess. And most importantly: nothing on the tyre or brake disc. If it happens, clean the disc with brake cleaner and ride the first kilometres carefully.
Checking and adjusting the slack
A chain that is too loose slaps, can jump off in the worst case and wears faster. A chain that is too tight strains the gearbox output shaft and wheel bearings. The correct slack is in the manual or on a sticker on the swingarm. For many road bikes it is roughly between 2.5 and 5 cm, on enduros often considerably more.
Measure in the middle of the lower run: push the chain up with a finger, pull it down and measure the travel in between. Because chains stretch unevenly, turn the wheel and measure at several points. Adjust at the tightest point.
How to adjust:
- Loosen the rear axle nut.
- Turn the chain adjusters on both sides by the same amount, the marks on the swingarm must match on both sides.
- Measure the slack again.
- Tighten the axle nut to the specified torque, tighten the adjuster lock nuts.
- Finally check the slack once more.
When is the chain kit worn out?
A simple test: pull the chain away from the rear sprocket at the back. If you can lift it more than about 3 mm so that you can see between chain and tooth, it is worn. Other signs:
- The teeth on the rear sprocket are pointed or hook-shaped.
- Individual links are stiff and no longer bend freely.
- The chain needs adjusting more and more often.
- The adjusters are at the end of their travel.
Always replace the complete kit of chain, front sprocket and rear sprocket. A new chain on old sprockets wears out in no time. Riveting the master link requires a special tool. If you've never done it, leave it to a workshop.
Shaft and belt drive
With a shaft drive there's no chain maintenance. You change the oil in the final drive at the intervals in the manual. Toothed belts are almost maintenance-free, but check them regularly for cracks, missing teeth and trapped stones.
Summary
Lube every few hundred kilometres, check the slack about every 1,000 km, clean without a pressure washer or brake cleaner: that's all a healthy chain needs. A chain kit then often lasts 20,000 km or more, depending on riding style and weather. More jobs for spring are in our spring check.
Frequently asked questions
How often do I need to lube my motorcycle chain?
As a guide every 300–500 km and after every ride in the rain. Your motorcycle's manual gives the exact value.
Can I clean the chain with a steam cleaner?
No. The jet can damage the seals and push dirt into the links. Use chain cleaner and a soft brush.
How much slack does the chain need?
It's in the manual or on the swingarm. For many road bikes it's roughly 2.5 to 5 cm, measured in the middle of the lower run.
Can I replace just the chain?
Not recommended. The chain and both sprockets wear together. A new chain on old sprockets won't last long.
Sources
- Proper motorcycle chain care (Motorrad Online, German)
- Adjusting the chain correctly (Motorrad Online, German)
- Guide to motorcycle chains (Tourenfahrer, German)
Last checked: September 2026. The values in your motorcycle's owner's manual apply.