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.

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Piston Ring Set for JONSERED 920 Super, 930 Chainsaws [#503289021]

$13.55

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Piston Ring Set fit JONSERED 920 Super, 930 Chainsaws [#503289021] and related spare parts.

Details

Product Description

This listing is about an after-market top-quality Piston Ring SetTips for safely installing piston rings made by the well-known OEM firm CABER

and fits the following JONSEREDSpare parts for JONSERED machines models:

920 Super
930

The set consists of two (2) piston rings and replaces JONSERED part #503 28 90-21.
Note: JONSERED part #503 28 90-21 replaces part #503 08 17-01.

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 JONSERED 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).

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