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- Dec 26, 2015
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Still have that ms440?
Yup
Still have that ms440?
That’s a lot of carbon build up for a half tank!
The "death rattle"..That piston should have been replaced during the rebuild.
There is not a machine mark left on that skirt. You can barely see the faint remnants of machine marks near the ring lands. In my experience when the machine marks are warn off that far up on the skirt the bottom is 0.003-0.004" small which would pretty much triple the stock piston to cylinder clearance on 46mm bore.
The "death rattle"..
The only saws I've experienced this in were the older generation of stihls. With mucho hours on them.
Years of ingesting fines wore the intake off to the point you could detect a "rattle" when run.
Never had one go so far as to break off a piece though. Piston was replaced before that.
Did you send it to get ported or buy it that way?
Worn down like this?
J-red 510 or 520 IIRC.
Dang Tom. That's methed up.
Copy! Makes sense now! I am sure there are members on here the could machine your pop upNo, I only bought the cylinder and piston from him a LONG time ago. I just got around to putting it on a chassis. I think I cut 4 rounds with it. The rest of the time has been spent tuning in my garage. 1 had one bad carb on there until I got another to swap out. I knew it was a little worn but he shaved the base so when I went with a new meteor it hit. So, seeing as I cant machine a pop up, dont even know how, I went with the piston because I thought it might last a little while. My bad!! All my builds I put a new piston on it even if its wore a little, this one was different because of the pop up. Thats one to the learning experience memos. This happened when I didnt even have the saw started, was changing over the rope and handle when it bound up. No telling if it was cracked before, it might have been, didnt see it if it was.