Stihl 044 10 or 12mm

[MikeyD]

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?

 

[John Lyngdal]

What so the cooling fins on the top of the cylinder look like?

 

[lone wolf]

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?

 

[wcorey]

Should be an early 12mm with a slant fin cylinder.

 

[MikeyD]

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?

uth

 

[MikeyD]

What so the cooling fins on the top of the cylinder look like?

 

[scallywag]

12mm Saw....You have some work to do finding the cause of that melt down!

 

[MikeyD]

12mm Saw....You have some work to do finding the cause of that melt down!

Thank you, it was caused by lending it to a friend who put the wrong gas in it. Needless to say, I dont let anyone borrow my saws anymore!

 

[scallywag]

it was caused by lending it to a friend who put the wrong gas in it.

Sorry to hear that!...Would you have a closer pic of the piston?

 

[MikeyD]

Sorry to hear that!...Would you have a closer pic of the piston?

I dont have the head off yet, but looking through the muffler port you can tell it's in rough shape. Looks like the rings are gone.

 

[lone wolf]

I dont have the head off yet, but looking through the muffler port you can tell it's in rough shape. Looks like the rings are gone.

Straight gas no doubt! Take the cyl of and meas the pin.

 

[MikeyD]

Straight gas no doubt! Take the cyl of and meas the pin.

Will do thanks for the reply

 

[tek9tim]

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]

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!