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Stihl 044 10 or 12mm

MikeyD

MikeyD

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Mar 17, 2020
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Rodman NY
I have a stihl 044 that has lost compression. I took the muffler off and can see the piston is in bad shape. I plan on re building the top end. Can anyone tell me if this has a 10 or 12mm wrist pin based on the serial number in the attached pic?
 

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lone wolf

lone wolf

MS 200T King
Joined
Oct 5, 2009
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53,648
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Prowling The Pine Barrens
I have a stihl 044 that has lost compression. I took the muffler off and can see the piston is in bad shape. I plan on re building the top end. Can anyone tell me if this has a 10 or 12mm wrist pin based on the serial number in the attached pic?
Measure the wrist pin or can you post a clear pic of the pull start side of the saw by the oil cap and muffler?
 
tek9tim

tek9tim

ArboristSite Guru
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Dec 12, 2005
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Entiat, WA
I know this is a little old, and it's in the wrong area, but yeah. I'll affirm that's a 12mm. Changeover was in the 129 serial number range.

Definitely figure out what caused it. Of course there's the straight gas possibility, or operator error in trying to shake out the last few drops of fuel at the end of the tank. If it wasn't a known operator error, then my money is on crank seals on a saw that old.
 
MikeyD

MikeyD

ArboristSite Lurker
Joined
Mar 17, 2020
Messages
7
Age
38
Location
Rodman NY
I know this is a little old, and it's in the wrong area, but yeah. I'll affirm that's a 12mm. Changeover was in the 129 serial number range.

Definitely figure out what caused it. Of course there's the straight gas possibility, or operator error in trying to shake out the last few drops of fuel at the end of the tank. If it wasn't a known operator error, then my money is on crank seals on a saw that old.
Thanks for the reply. It was a gas issue for sure. I actually just got the parts and rebuilt it today successfully. I just sunk it into a couple logs outback and its cutting like new. For now anyways!
 
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