The MS250's problem and story goes like this: My brother gave me a lightly used MS250 he got off of an ex logger that I believe 10 years old or less. He ran it at the guy's place and cut wood with it, etc and it ran like a champ. Fast forward 1 month and I get it. It hasn't been run since he initially ran it and the fuel was left in the tank. A few days ago I received it and went to run it, after robbing an oil cap off of another saw since it's was missing, but it wouldn't run at full throttle. It would bog down at about half throttle and die if you tried to push it higher As it was 30 degrees with a strong wind chill we figured it needed to warm up like Dad's husky 445 which does the same thing. After it idled for 4-5 minutes and still wouldn't run we gave up on it for the day. The next day, we could get it to run at full throttle and cut wood but it wouldn't idle. After that we decided to take it in to a shop and get their opinion while getting an oil cap and air filter cover for it. The guy at the shop said the carburetor was bad so I got a oem zama off of ebay and figured that would fix it. Tonight as I was pulling the carb off to swap the new one in and I noticed the fuel line was cracked. Is that the problem or is the carburetor the problem? I figure I'll buy a new fuel line and try that and the old carb anyways but I want to get y'all's opinion on it.
Now for the MS310: Same logger, different story. My brother got it with the issue of it dying anywhere from 15-30 seconds depending on how you ran the throttle. It fires up, cuts wood while it runs, and then just throttles down to nothing. The same shop said carb for this guy as well and a new carb is sitting on my desk. Before I go back into the cold and rain and move it from storage to shop to check the fuel line and mess with the carb, is it the carb on this guy like the shop said, the fuel line, or something else?
Now for the MS310: Same logger, different story. My brother got it with the issue of it dying anywhere from 15-30 seconds depending on how you ran the throttle. It fires up, cuts wood while it runs, and then just throttles down to nothing. The same shop said carb for this guy as well and a new carb is sitting on my desk. Before I go back into the cold and rain and move it from storage to shop to check the fuel line and mess with the carb, is it the carb on this guy like the shop said, the fuel line, or something else?