BushWackin
ArboristSite Lurker
Hi guys,
I am having an issue with a dolmar 5105 that I purchased from a gentleman on this site a couple years ago.
Easy start, fully adjustable carb, 5100s muffler to keep heat down, a tach to check rpms. About 25 hours on it since I got it. Not much use in it before I got it.
I have run the saw regularly including yesterday for two hours or so.
Fueled it up, put on a fresh chain, lube, all good this morning and cut up some brush for 30 or so minutes and it stopped running on its own. No hard use, 4 inch or smaller brush.
I was concerned I may have burnt up the saw, but I have a tachometer on it so I know I have been keeping it in the slightly rich side.
I pulled the plug and muffler to make sure the Piston, ring, and cylinder looked good. The Piston still has about 50 percent of it's original machine marks, no visible scoring that I could tell. Some carbon buildup in the very bottom of the skirt and on the top of the Piston and in the exhaust Port. Nothing crazy best I can tell.
The spark plugs was wet and a darker brown. Definitely not a lean gray or black so I cleaned it up just in case.
There was quite a bit of gas in the exhaust so I dried it out, let the cylinder dry out, cleaned the plug, and put it back together. I pulled the air filter, which is clean, put in a little seafoam and let it sit.
Tried getting it to start, but nothing on choke or idle. Won't even kick once.
I thought maybe my carb settings were bad after tweaking them a couple times so I screwed all three carb settings in till lightly snug and backed them out 1.5 turns each . Still nothing, tried 1 turn high and low, still nothing.
Tried a different plug, still nothing.
Waiting a while to see if I flooded it, and nothing.
This saw had up until today started after 2-3 easy start pulls on choke, and 1 or 2 pulls after the pop.
The gas is ethanol free, 89 octane at 42:1 with amsoil saber. Mixed a few months ago, but stored well and have bad no issues with it until today.
Any ideas? No spark? Do I have the wrong carb settings for dolmar? Including the idle screw?
I am having an issue with a dolmar 5105 that I purchased from a gentleman on this site a couple years ago.
Easy start, fully adjustable carb, 5100s muffler to keep heat down, a tach to check rpms. About 25 hours on it since I got it. Not much use in it before I got it.
I have run the saw regularly including yesterday for two hours or so.
Fueled it up, put on a fresh chain, lube, all good this morning and cut up some brush for 30 or so minutes and it stopped running on its own. No hard use, 4 inch or smaller brush.
I was concerned I may have burnt up the saw, but I have a tachometer on it so I know I have been keeping it in the slightly rich side.
I pulled the plug and muffler to make sure the Piston, ring, and cylinder looked good. The Piston still has about 50 percent of it's original machine marks, no visible scoring that I could tell. Some carbon buildup in the very bottom of the skirt and on the top of the Piston and in the exhaust Port. Nothing crazy best I can tell.
The spark plugs was wet and a darker brown. Definitely not a lean gray or black so I cleaned it up just in case.
There was quite a bit of gas in the exhaust so I dried it out, let the cylinder dry out, cleaned the plug, and put it back together. I pulled the air filter, which is clean, put in a little seafoam and let it sit.
Tried getting it to start, but nothing on choke or idle. Won't even kick once.
I thought maybe my carb settings were bad after tweaking them a couple times so I screwed all three carb settings in till lightly snug and backed them out 1.5 turns each . Still nothing, tried 1 turn high and low, still nothing.
Tried a different plug, still nothing.
Waiting a while to see if I flooded it, and nothing.
This saw had up until today started after 2-3 easy start pulls on choke, and 1 or 2 pulls after the pop.
The gas is ethanol free, 89 octane at 42:1 with amsoil saber. Mixed a few months ago, but stored well and have bad no issues with it until today.
Any ideas? No spark? Do I have the wrong carb settings for dolmar? Including the idle screw?