Stihl 025 oiler question

alteran · Dec 22, 2006

I have the 025 running nice, screaming really... but the oiler is not putting out much. I left the bar off and ran it full throttle. The oil is barely coming out of the hole into the channel. I ran it a few minutes and it is dripping off the bottom of the saw at a rate of about 1 drip per 10 to 20 seconds.
So I drained the oil and put some gas in the oil tank and ran it just a bit till gas came through the oiler. It came a little faster, kinda spit out but still not too fast. I did this thinking it might clean it out since the saw sat without use for a few years.
Put bar oil back in and it is not different than before.
At this rate I'd say it would not even be close to running through a tank of bar oil to a tank of gas.

So.... is this adjustable? Is it likely to need to be rebuilt? Some new seal or plunger or?

Any parts breakdown on the net somewhere?
Can someone walk me through rebuilding it?

Thanks, Al.

ericjeeper · Dec 22, 2006

you run it full throttle a few more times

without the bar on it.. you won't have to worry about the oiler.
Wasd the oil winter oil?or summer grade oil?.was the saw warm or cold?
Some of the smarter guys will be here shortly to give you better answers.

alteran · Dec 22, 2006

Saw and oil were warm and I was in my warm shop. Everything at 70 degrees.

yawning_dog · Dec 23, 2006

some things to try

I just went through my 025 oil pump. In my layman terms, there's a little wire thing under the clutch called a "spring" that attaches to a plastic worm gear. When the clutch engages with the clutch drum, the drum then turns the spring, which therefore rotates the worm gear. The worm gear engages with the oil pump and draws oil from the tank through an oil filter.

1) If the spring spins freely on the plastic worm gear, it won't turn the worm gear.

2) If the worm gear threads are thrashed, it won't engage with the oil pump gear

3) If the oil pump is somehow all gunked up it may allow oil to flow through it

4) If the oil filter is all gunked up it may not draw oil

In my case, I think #1 was the problem. To get at the spring/worm gear you have to take the clutch off (left hand thread). To get at the oil pump you have to remove the saw handle. To remove the oil pump you have to remove the plastic connector/hose assembly and then screw a screw into it. Then yank it out. I had to use the claw of a hammer to get mine out. Hope this helps. If I were you I would also search the site for "025 oiler" "025 oil pump" etc.

tcscmo · Dec 23, 2006

I had an 025 for a few years. It would use about 1/2 to 2/3 of a tank of bar oil for every tank of fuel. Even though its not an adjustable oiler I found it oiled well enough with a 16 and 18 inch bar.

Just for the record my 260 pro oils at about the same rate with the oiler set in the middle, and also uses a 16 inch bar.

To sum it up I am satisfied with the rate of flow on both saws.