Got an MS 250. Rented to a client. Returned a few hors later. Doesn't start. I check all my machines when they come back in. Check them before they go out. So, I know it was working when it went out. We offer PROPERLY pre-mixed gas (additional cost for what's used), and chain oil. The chain oil they have to buy (once they break the seal we can't take it back).
For this particular saw. I KNOW it was running just fine. A client had rented it the day before. Brought it back and was ecstatic about how it performed. I take everything with a grain of salt when people return stuff. So, as always start it. Make sure it runs. Check fluid levels, top them up. This one. I was busy working on something else, so I didn't have time to immediately look at it and check it in. I eventually get to it and it won't start. Like it doesn't have enough compression. Check the fuel and is doesn't look or smell quite right. Emptied it then filled it with good fuel. Check for spark and it good. Still won't start. Still feels like it doesn't have enough compression. Take the plug out and put my endoscope in. The cylinder looks fine on the exhaust side (one tiny score mark). Take off the muffler and peek inside. I can see some scoring. Put my endoscope in. But, this time I can actually angle it around. There's scoring all around the cylinder (as much as I can angle the endoscope). But, to me it doesn't look that bad. I've seen worse on other saws (from other makes) and they started just fine. It doesn't have the M-Tronic, so I can rule that out. Squirted some oil in the cylinder and it half starts. Does the same when I spray brake cleaner in the intake. But, won't run. I'm hoping not to have to take the thing apart and replace the cylinder and piston. Because, I have to go though our single supplier for Stihl parts. Which is frustrating as hell. The wait time is ridiculous. So, I have a few questions.
Is it possible that even light scoring can cause a no start (what I think is light scoring)? I can take pics on Tuesday. Am I missing something? I'm sure I'm not. These aren't complex machines.
For this particular saw. I KNOW it was running just fine. A client had rented it the day before. Brought it back and was ecstatic about how it performed. I take everything with a grain of salt when people return stuff. So, as always start it. Make sure it runs. Check fluid levels, top them up. This one. I was busy working on something else, so I didn't have time to immediately look at it and check it in. I eventually get to it and it won't start. Like it doesn't have enough compression. Check the fuel and is doesn't look or smell quite right. Emptied it then filled it with good fuel. Check for spark and it good. Still won't start. Still feels like it doesn't have enough compression. Take the plug out and put my endoscope in. The cylinder looks fine on the exhaust side (one tiny score mark). Take off the muffler and peek inside. I can see some scoring. Put my endoscope in. But, this time I can actually angle it around. There's scoring all around the cylinder (as much as I can angle the endoscope). But, to me it doesn't look that bad. I've seen worse on other saws (from other makes) and they started just fine. It doesn't have the M-Tronic, so I can rule that out. Squirted some oil in the cylinder and it half starts. Does the same when I spray brake cleaner in the intake. But, won't run. I'm hoping not to have to take the thing apart and replace the cylinder and piston. Because, I have to go though our single supplier for Stihl parts. Which is frustrating as hell. The wait time is ridiculous. So, I have a few questions.
Is it possible that even light scoring can cause a no start (what I think is light scoring)? I can take pics on Tuesday. Am I missing something? I'm sure I'm not. These aren't complex machines.