The chain guide is a guide strip that damps the vibration of the timing chain so it does not slap against the crankcase wall or make noise.
Replace it when the working surface is worn smooth, deep grooves or cracks have appeared, or you can hear the chain rustling and knocking at idle. Replace it together with the tensioner and check the chain: a stretched chain will quickly wear out a new guide again. If you are unsure about compatibility, call us and we will help you by model.
