Symptoms
- Bar and chain look dry during or after cutting
- Increased friction and smoke from the bar area
- Chain wears or dulls faster than normal
- Oil reservoir empties very slowly or not at all
Likely causes
- CommonEmpty or low bar oil reservoirThe oil tank needs separate refilling from the fuel tank.
- CommonClogged oil outlet port or bar grooveSawdust can block the small oil delivery port on the bar.
- PossibleClogged oil filter or pickupDebris in the oil tank can block the pickup line.
- PossibleFailed oil pumpThe pump that pushes oil to the bar can wear out over time.
What to do
- Check the bar oil reservoir level and refill with bar and chain oil if low.
- Clean the oil outlet port on the bar with a small wire or pick.
- Remove the bar and clean out the groove where the chain rides, which can pack with sawdust.
- Check the oil filter inside the tank (if accessible) for clogging and clean or replace it.
- Test oil flow by running the saw a few inches from a light surface and watching for oil sling.
- Adjust the oil flow rate if your model has an adjustable oiler.
- If no oil flows after cleaning, the oil pump likely needs professional replacement.
Tools and parts
- Small wire or pick
- Bar and chain oil
Chainsaw oil pumpSearch: “chainsaw oil pump replacement”
When to call a pro
A small-engine shop can replace the oil pump if cleaning doesn't restore oil flow.
Safety
Use caution
Make sure the saw is off and the chain brake is engaged before working near the bar and chain.