How can I determine whether my piston is reusable so as to replace just the piston rings?

The most common problem of a piston that needs replacement is in case there are scratches on its body.

What other parts I may need to replace when replacing the piston rings?

To replace the piston rings you need to disassemble the engine, so you also need to replace the cylinder gasket.

$6.91

In stock

Piston Ring for DOLMAR PS420, PS 420C, PS-420S, PS-420 SC, PS421 Chainsaws [#195132020] and related spare parts.

This listing is about a brand new after-market top-quality Piston RingTips for safely installing piston rings made by the well-known OEM firm CABER (Italy), and fits the following DOLMARSpare parts for DOLMAR machines models, and replaces OEM Part #195 132 020:

Our Piston Rings are branded and come directly from the top-quality and worldwide-known OEM Manufacturer CABER.
Our Piston Rings are made from I-Cast Iron with high bending strength according to ISO STD 6621-3:1990 and DIN 70909.
Protect your valuable DOLMAR machine. Use only Branded & High-Quality Parts. Enjoy thousands hours of safe and trouble-free operation!

Important Notice:

If the Part Number of the spare part shown in this listing does not match yours, please let us know. Manufacturers often replace old Part Numbers with new ones, as they launch new products in the market.
If you don't know the OEM Part Number for the piston rings of your machine, please let us know the dimensions of the piston rings you are looking for (diameter x thickness).