I've been working on this stihl 041 aveq off and on for getting close to a year now. I've replaced the crank seals, fuel line, impulse line, new episan piston and rings. I am pretty sure all that is good. This is about the first piece of equipment that I have tried to tune the carburetor on. I finagled my way through and got it to idle consistently, and have good throttle response. Put it in some wood and it bogged down in dried 7" hedge. Put it down for a month, tried again in 15" cedar. With the high needle at 1 1/4 turns out it will cut with about the same power as my 028 wb. at 1 3/8 turns out it cuts about the same with backfiring out of the carb. Leaning it out to about 1 turn out and it doesn't even want to rev up with any power.
Any ideas? After searching the forums for awhile, I'm wondering about a sheared flywheel key, or a plugged muffler.
Any ideas? After searching the forums for awhile, I'm wondering about a sheared flywheel key, or a plugged muffler.