You should have approximately 20% of the oil left in the tank when you are out of fuel.
When cutting Australia Red Eucalyptus and a few other varieties, the sap will actually clean the oil off the chain and it will seem like the oiler is not working.
Remove you bar and chain and run the saw to see if it is truly not oiling.
If it is not oiling, remove the "C" clip that hold the sprocket drum on and then remove sprocket drum.
You will be looking at the clutch. It has a 19mm nut made onto the center spider. This is a backwards thread. It come off to the right.
Do not use an impact wrench to remove it. You can shear the flywheel key or brake the clutch spider.
Remove the spark plug. Get a piece of small rope and fold in half and stick it in the spark plug hole. Do not put too much in. You now have the piston stopped.
Remove the clutch assy.
You will see a wire going around the crankshaft and sticking out a few inches. This wire is clipped on the white polymer oiler drive gear. The oiler drive gear slides right off the crankshaft.
If the wire is "loose" on the oiler drive gear of the the end "tip" is worn off, the gear will need replaced.
Assemble in revers order and don't forget to grease the sprocket bearing.
Total time it should take you is about 12 minutes.
