Post by waterrat on Nov 28, 2020 0:18:23 GMT -5
Hi 1st time poster here and 1st time working on a chainsaw but not a stranger to turning wrenches on motorcycles and other small engines.
Dug this saw out of a scrap metal pile so I have no idea of its past history or problems.
Saw had compression so I took it home and give it a shot of fuel at the air filter and it started. I put fuel in the tank and to my amazement it started and ran but would not lube the bar and it smoked like crazy and spit oil out of the muffler.
After a little research I learned about duck bills and there locations and it was missing both so I figured it was sucking bar oil into the engine.
I have replaced the fuel line , all oil lines , both duckbills and the oil lines are in the correct position.
The saw seems to idle ok but does seem to load up a little or may just need the idle adjusted a bit, it revs like it should and is now oiling the bar but still smokes bad and is still soaking the muffler with oil with a 40-1 fuel oil mix.
Since it was late and I live in town I only ran the saw long enough for it to get oil to the bar maybe 3 min max.
So I'm thinking maybe the saw has not ran long enough to burn off the oil that was still in the engine OR is it possible for the oil pump to malfunction and still allow oil into the engine.
What are your thoughts?
Dug this saw out of a scrap metal pile so I have no idea of its past history or problems.
Saw had compression so I took it home and give it a shot of fuel at the air filter and it started. I put fuel in the tank and to my amazement it started and ran but would not lube the bar and it smoked like crazy and spit oil out of the muffler.
After a little research I learned about duck bills and there locations and it was missing both so I figured it was sucking bar oil into the engine.
I have replaced the fuel line , all oil lines , both duckbills and the oil lines are in the correct position.
The saw seems to idle ok but does seem to load up a little or may just need the idle adjusted a bit, it revs like it should and is now oiling the bar but still smokes bad and is still soaking the muffler with oil with a 40-1 fuel oil mix.
Since it was late and I live in town I only ran the saw long enough for it to get oil to the bar maybe 3 min max.
So I'm thinking maybe the saw has not ran long enough to burn off the oil that was still in the engine OR is it possible for the oil pump to malfunction and still allow oil into the engine.
What are your thoughts?
