So I'm a newbie. I've done a little bit of clearing for work, so I'm comfortable with saws. Planning on getting some vacant land soon and figured I'd need a saw to clear stuff on there/fire wood.
I have this condition where instead of buying a new, working machine, I'll buy an cheap broken machine and bang my head against it for months until I know how it works and its working. Problem is this time it bit me in the ass.
So I went to pick up this ms250 an hour from my place. The guy selling it says its ready to go, he's put in an aftermarket carb, new filter, spark plug and lines and its running well. He started it up and it was idling really high and none of the set screws were changing any of that. Red flag. But I figure I can get him to knock off $50, give me the saw and the oem carb and I can sort it out.
I order a rebuild kit for the oem carb (3 months and it hasnt come) and start pulling things apart while watching youtube teardowns. Both carbs appear to be fine, no diaphragm or gasket damage, except maybe the gasket in between the carb and the plastic housing/engine, which is a bit chewed up.
Spark plug is clean, I later regapped it just to make sure it was to spec.
The only thing I notice during the teardown is that someone did a hack epoxy job on the fuel vacuum line "nipple" that comes out of the gas tank.
With a smaller piece of plastic pipe going through to the tank holding everything in place, I super glue the plastic back together and reepoxy the outside so its strong enough to hold the vacuum line, and it seems to be working.
Saw wont start though.
So I tear it down again, and open up the engine block. Everything seems to be alright in there, minor scoring on the piston/cylinder, but nothing like ive seen on saws ive seen on the internet, and those fired up. Broke a piston ring trying to put the head back on, so I ordered and replaced both of those. Redid the liquid gasket and got the cylinder head back on.
Saw still won't fire. Spark plug has white spark and is wet, so i'm guessing its getting fuel. I cleaned out all the carbs with cleaner n compressed air and tried running with each one to no avail. I imagine its getting air. Compression test gives me 140psi, which doesn't seem unreasonable.
Still, Stihl wont go.
I'm loosing faith in my capacity to sort this thing out, but i figured before i bite the bullet and pay to have someone fix my saw I'd check with the community and see if they had any advice to help me try and sort it on my own.
Thanks in advance.
I have this condition where instead of buying a new, working machine, I'll buy an cheap broken machine and bang my head against it for months until I know how it works and its working. Problem is this time it bit me in the ass.
So I went to pick up this ms250 an hour from my place. The guy selling it says its ready to go, he's put in an aftermarket carb, new filter, spark plug and lines and its running well. He started it up and it was idling really high and none of the set screws were changing any of that. Red flag. But I figure I can get him to knock off $50, give me the saw and the oem carb and I can sort it out.
I order a rebuild kit for the oem carb (3 months and it hasnt come) and start pulling things apart while watching youtube teardowns. Both carbs appear to be fine, no diaphragm or gasket damage, except maybe the gasket in between the carb and the plastic housing/engine, which is a bit chewed up.
Spark plug is clean, I later regapped it just to make sure it was to spec.
The only thing I notice during the teardown is that someone did a hack epoxy job on the fuel vacuum line "nipple" that comes out of the gas tank.
With a smaller piece of plastic pipe going through to the tank holding everything in place, I super glue the plastic back together and reepoxy the outside so its strong enough to hold the vacuum line, and it seems to be working.
Saw wont start though.
So I tear it down again, and open up the engine block. Everything seems to be alright in there, minor scoring on the piston/cylinder, but nothing like ive seen on saws ive seen on the internet, and those fired up. Broke a piston ring trying to put the head back on, so I ordered and replaced both of those. Redid the liquid gasket and got the cylinder head back on.
Saw still won't fire. Spark plug has white spark and is wet, so i'm guessing its getting fuel. I cleaned out all the carbs with cleaner n compressed air and tried running with each one to no avail. I imagine its getting air. Compression test gives me 140psi, which doesn't seem unreasonable.
Still, Stihl wont go.
I'm loosing faith in my capacity to sort this thing out, but i figured before i bite the bullet and pay to have someone fix my saw I'd check with the community and see if they had any advice to help me try and sort it on my own.
Thanks in advance.
