jimmysisson
ArboristSite Lurker
I have a Dolmar 5100s about 3 yrs old only about three dozen tanks through it. Runs great. Lately has started making a light rattling sound at high speed just as you speed up to start into the cut. As soon as it's cutting much at all the rattle stops and the saw pulls just fine in the cut. Starts and idles fine.
The saw seems to turn faster than it did when new. I haven't done anything to the carb or muffler. If it was an old car I'd say it was detonating, pinging like it would under high load/low rpm, though this is a higher frequency and pitch. My old saw is a Jonsereds 80, which runs like a truck, low speed, so maybe I'm just not used to this?
Maybe it's lean? I don't know what 4-stroking sounds like, may be that? Oh yeah, gas is regular, 32:1 with Stihl oil.
Hard to write what a noise sounds like. Something to fix, or is it normal?
Thanks, Jim
The saw seems to turn faster than it did when new. I haven't done anything to the carb or muffler. If it was an old car I'd say it was detonating, pinging like it would under high load/low rpm, though this is a higher frequency and pitch. My old saw is a Jonsereds 80, which runs like a truck, low speed, so maybe I'm just not used to this?
Maybe it's lean? I don't know what 4-stroking sounds like, may be that? Oh yeah, gas is regular, 32:1 with Stihl oil.
Hard to write what a noise sounds like. Something to fix, or is it normal?
Thanks, Jim