Change the oil filter together with the oil

The filter holds dirty oil and all the abrasive grit it has collected. Leave the old one on and fresh oil gets contaminated within minutes of filling.

• Warm the engine for two or three minutes: warm oil drains faster and more completely.
• Remove the drain plug, let the oil run into a pan and give it time to drip out fully.
• Unscrew the old filter or cartridge with a pan underneath, because it will spill oil too.
• Wipe the mating surface clean. Smear a thin film of fresh oil on the new filter's gasket.
• Fit the new filter and tighten it to the spec in your bike's owner's manual. On bikes with a filter housing, replace the O-ring as well.
• Refill with oil, run the engine for a minute, shut it off and after a few minutes check the level and look for leaks at the filter and drain plug.