The oil pump drive transmits rotation to the oil pump of the STIHL 180 chainsaw and ensures lubricant is delivered to the chain.
Replace it if the gear or worm teeth are worn down, or the housing is cracked. Sign of wear: the saw does not deliver oil even though the tank is full and the channel is clear.
Good preventive care: regularly clean the saw of sawdust and resin, use fresh fuel mixture and chain oil suited to the season.
