Chainsaw Repair

Hi to everyone.

I'm just new to the site and have joined as i'm at a complete loss as to find a replacement piston and cylinder for a Solo 603 chainsaw.

If anyone can advise where i can find a replacement 56mm piston to suit the Solo 603 and/or a replacement cylinder, it would be greatly appreciated.

I've been tearing my hair out trying to find these parts. I am sure another piston from a different chainsaw manufacturer would fit, but no one seems to know any cross reference pistons that will do the job.

Hopefully the photos will be of help in finding a matching piston that will work in the Solo 603 cylinder, though i really need a new cylinder.

Kind regards
Fabian

I could be wrong but from what i understand, Solo and Stihl have their cylinders and pistons made by Mahle. It would seem logical that there should be a Stihl chainsaw with a 56mm piston and a 12mm wrist pin (gudgeon pin), and overall dimensions that are similar to the Solo 603 piston.

The best option would be if someone knows where i can find a replacement piston and cylinder combination.

In the 395 Husqvarna the pin is 13mm

Are the rings on these 1.5mm thick?  I have a set of afm 56mm 1.5mm rings left over from a 166 project long ago.

If you look carefully at the up ended photo of the piston, you will see that the lowest section of the (exhaust side) piston skirt is half the thickness (by 0.5mm ) than the intake side of the skirt.

It slops about quite a bit in the bore and would most likely rattle the exhaust side of the piston skirt to pieces.

The biggest problem with the Solo 603 piston when considering a replacement from a different manufacturer is the 12mm wrist pin (piston pin) diameter.
Every 56mm piston seems to use either a 13mm or a 14mm wrist pin, and that seriously limits the potential piston options.