My tree service neighbor seems to have an inexhaustible supply of discarded saws he brings me sometimes as parts saws for free, sometimes to fix. Came by late last night stressed out because he had a removal job today and three of his saws broke their starter cords the same day. Loves his Echo CS-310 he said I worked on (though honestly don't remember it) just needed the starter handle reattached. Chain was ridiculously loose and no room left to tension it so I removed a link and put it back together and much better. MS171 trigger rod fell off again and handle partially came apart that I just fixed. Terrible design, just clip on handle moulding that seems to come apart at a moment's notice. Had those two saws ready for him in the morning. I made up a chain from the free roll I got of Archer .043 LP and put it on the new 16" Tsumura bar for the dead MS251 he gave me I fixed up for myself last month. That's a great little saw. He also left a 338XPT he said I could have that he'd never had running. Seems a bad fuel line, primer bulb doesn't draw fuel, with fuel in cylinder it coughed to life easy. Fixed fuel lines, cleaned carb, runs but seems a little rich yet with hi jet screwed in to limiters capacity and won't idle at all. One of the carb diaphragms was completely brittle, ordered a carb kit. He left an MS250 as well for starter cord repair, which turned out not to have spark once I got that done. Or at least I thought it didn't, ordered a cheap coil and before installing it tried the saw again and it fired up fine.
Also left me an MS211 with a missing muffler to cannibalize for the other saws, but probably not much wrong with it either, compression is fine. So far took it's starter cord for the 250, and the clutch cover for the 251, but will probably get the parts to fix it too as I don't like to have any parts saws, just working completes. Has a broken anti-vibe connection on the handle to the top of the cylinder. Replaced the starter cord, tried it without muffler and sparked to life. So will go ahead get a second hand muffler, clutch cover, and AV connection. Scratch that, repaired the AV after a fashion, took some of the AV out of it but handle is solid now. Will take the clutch cover back from the 251 which it fits but isn't an exact match. So just need the muffler and I'm good.
Something weird I've experienced with both the 250 and 251, and a bit with my 361, but not any other saws - the 250 and 251 were initially incredibly hard to pull so I couldn't start them, I assumed from leaking carbs and hydrolock. But taking the plug out and clearing the cylinder never helped. It was only when I turned the flywheel with a drill for a sustained amount of time that they freed them up so I could pull start them. Maybe just a matter of the rings needing lubrication. My 361 is still hit or miss in starting, sometimes jerks out of my hand, sometimes I can pull it just fine, but often easier starting with decomp valve open on it.