freeasaburt
ArboristSite Operative
Hello,
a while back an arborist more or less gave me an MS441 C-M, I traded for 2 cases of beer . He told me he had the cylinder and piston replaced by aftermarket parts after the spark plug flew out of the oem cylinder, stripping the threads. After that it didn't make decent power and the saw lay unused in storage for a while. He later mentioned they never reset the m-tronic system though.
I'm guessing it's a Meteor cylinder btw, based on the price he mentioned.
I read up on m-tronic resetting and did so; the saw didn't seem to make a ton of power after that but it pulled the chain (25 inch bar) quite easily and the extra reach was a nice advantage by itself.
Recently it was more difficult to start though, and now the saw won't even allow me to do the 90sec reset, first it runs at quite high rms, those go down quickly though and then it dies. If I switch the throttle to run, it idles though, with no issues at all, and although it seems really weak for a 70cc, it cuts. Smokes a lot though (I run Motomix). It seems to be pig rich, I noticed at some point that the plug was wet in any case. However, pulling it over about 10 times with the plug removed doesn't remedy the situation.
I just did some cutting with it, then let it idle a few minutes more, then stopped it; after that, there's now way you can start it, not in the 'run' position, and not in the 'choke' position either.
I obviously cleaned the air filter, also I replaced the plug (tested, saw spark) and the fuel filter.
I'm now considering throwing the carb in the ultrasonic, if it's not the carb my guess is that the solenoid is the culprit.
Can you actually also throw the solenoid in the ultrasonic cleaner? Would it help, or should I just replace it if cleaning the carb doesn't help?
Thanks in advance for any replies.
a while back an arborist more or less gave me an MS441 C-M, I traded for 2 cases of beer . He told me he had the cylinder and piston replaced by aftermarket parts after the spark plug flew out of the oem cylinder, stripping the threads. After that it didn't make decent power and the saw lay unused in storage for a while. He later mentioned they never reset the m-tronic system though.
I'm guessing it's a Meteor cylinder btw, based on the price he mentioned.
I read up on m-tronic resetting and did so; the saw didn't seem to make a ton of power after that but it pulled the chain (25 inch bar) quite easily and the extra reach was a nice advantage by itself.
Recently it was more difficult to start though, and now the saw won't even allow me to do the 90sec reset, first it runs at quite high rms, those go down quickly though and then it dies. If I switch the throttle to run, it idles though, with no issues at all, and although it seems really weak for a 70cc, it cuts. Smokes a lot though (I run Motomix). It seems to be pig rich, I noticed at some point that the plug was wet in any case. However, pulling it over about 10 times with the plug removed doesn't remedy the situation.
I just did some cutting with it, then let it idle a few minutes more, then stopped it; after that, there's now way you can start it, not in the 'run' position, and not in the 'choke' position either.
I obviously cleaned the air filter, also I replaced the plug (tested, saw spark) and the fuel filter.
I'm now considering throwing the carb in the ultrasonic, if it's not the carb my guess is that the solenoid is the culprit.
Can you actually also throw the solenoid in the ultrasonic cleaner? Would it help, or should I just replace it if cleaning the carb doesn't help?
Thanks in advance for any replies.