Stihl MS290 Chain oil problem

[Vetteman38]

My Dad has a Stihl MS 290 Chainsaw. It's not putting out enough oil to lube the chain/Bar. It dosen't seemed to be clogged up cause he said he can blow through the tube.
Thanks for any help.
vetteman38

[jkilov]

It dosen't seemed to be clogged up cause he said he can blow through the tube.
That's no real test. And he should'nt be able to do that too easily. I'm guessing the pick-up tube has a small crack that leaks.

Make sure the outlet hole isn't clogged and that the clutch drum engages the oil drive hook. Any sprocket replacements lately?

Finally on most plastic stihl saws, the oil pump housing is part of the saw housing and made of plastic, if this were worn from dirty (motor) oil, it would'nt seal.

[AmsoilPower]

May need to turn up the oil pump on the underneath side of saw. Also the gear under the clutch could be stripped out.

[Vetteman38]

Thanks guys, I didn't know you could adjust the output on the luber
We'll try that tomorrow. Also dad said sometimes he uses used motor oil for lube! that can't be good.
Thanks again.
vetteman38

[AmsoilPower]

Thanks guys, I didn't know you could adjust the output on the luber
We'll try that tomorrow. Also dad said sometimes he uses used motor oil for lube! that can't be good.
Thanks again.
vetteman38

That is a quick way to burn up a bar. Motor oil is too thin and will sling right off the bar and not lubricate the bottom side of bar. Only use a good bar & chain oil that is tacky and will lube entire bar & chain.

[ricky86]

Drain oil. You got to be kidding. If it was so dirty he had to drain it, why in the world would you use it to lub something traveling about 4000 feet per minute? That pump was a precision part (its not plastic nor is the saw plastic) and was designed to over oil due to the model classification. Before you readjust. Drain that sludge out and flush the tank. Add fresh clean BAR OIL. Run the saw about 7/8 throttle and hold the tip of the bar up against a clean piece of cardboard. DONT LET THE TIP TOUCH. If you see oil on the cardboard the oiler is working OK