Hi!
Can anyone help me on what to try next here? My Stihl MS260 was not used for around a year or two. Now I cannot start it. I'm literally almost fainting with exhaustion pulling the cord after trying different things. Here's what I've tried so far. I never ever get any hint of combustion, it is as if it's completely dead:
1. Removed carb, dismantled, left if carb cleaner for a day, blown out all the holes.
2. Cleaned air filter - opened it in half and blew out from the inside.
3. Put in TruFuel 1:50 fuel from brand new bottle.
4. Tried spraying carb cleaner through the carb and starting.
5. Tried TruFuel through the spark plug hold - a dropper full, and then 3 droppers.
6. New spark plug. When I pull the plug and ground it, and pull the cord, I do see a spark BUT ONLY when I pull fast. When I pull at what I consider low to moderate levels I don't see anything.
7. Checked the spark arrestor - the fine mesh is completely clean.
8. Checked that fuel is being pulled up - I can see it at the top of the tube when I pull off the black rubber tube that goes into the carb. Fuel filter looks completely clean.
I've tried holding the carb on full speed mode (put a bungee on the handle to hold it open) and pulling dozens of times with it in run position. Nothing. Even when I have put fuel directly into the cylinder.
My guess is that the ignition system is weak and there's no spark inside the cylinder, despite me seeing sparks with the plug pulled and I pull the starter fast.
I'd truly like to fix this myself and understand what the problem(s) are, as I have another two saws that need similar TLC.
Can anyone help me on what to try next here? My Stihl MS260 was not used for around a year or two. Now I cannot start it. I'm literally almost fainting with exhaustion pulling the cord after trying different things. Here's what I've tried so far. I never ever get any hint of combustion, it is as if it's completely dead:
1. Removed carb, dismantled, left if carb cleaner for a day, blown out all the holes.
2. Cleaned air filter - opened it in half and blew out from the inside.
3. Put in TruFuel 1:50 fuel from brand new bottle.
4. Tried spraying carb cleaner through the carb and starting.
5. Tried TruFuel through the spark plug hold - a dropper full, and then 3 droppers.
6. New spark plug. When I pull the plug and ground it, and pull the cord, I do see a spark BUT ONLY when I pull fast. When I pull at what I consider low to moderate levels I don't see anything.
7. Checked the spark arrestor - the fine mesh is completely clean.
8. Checked that fuel is being pulled up - I can see it at the top of the tube when I pull off the black rubber tube that goes into the carb. Fuel filter looks completely clean.
I've tried holding the carb on full speed mode (put a bungee on the handle to hold it open) and pulling dozens of times with it in run position. Nothing. Even when I have put fuel directly into the cylinder.
My guess is that the ignition system is weak and there's no spark inside the cylinder, despite me seeing sparks with the plug pulled and I pull the starter fast.
I'd truly like to fix this myself and understand what the problem(s) are, as I have another two saws that need similar TLC.