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

The most common problem of a cylinder that needs replacement is in case there are scratches into the surface of the tube where the piston runs.

What other parts I may need to replace on my machine when replacing the piston?

To replace the piston you need to disassemble the engine, so you also need to replace the cylinder gasket, at least. Also, it is recommended to check the piston bearing.

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Piston Kit for HUSQVARNA T425 - JONSERED CS2125T (34mm) [#525615901]

$22.61

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Piston Kit for HUSQVARNA T425 - JONSERED CS2125T (34mm) Chainsaws [#525615901] and related spare parts.

Details

This listing is about a brand new after-market Piston KitHow to find the size of a piston ring which fits the following chainsaw models with bore size 34mm, and replaces OEM Part #525 61 59-01:

HUSQVARNASpare parts for HUSQVARNA machines T425
JONSEREDSpare parts for JONSERED machines CS-2125T

This high-performance Piston Kit comes directly from a top-quality ISO-certified Manufacturer.
This top-quality Piston Kit is covered by a 2-year warranty.
No Exporters - No Intermediaries You buy at a competitive price, because we buy directly from the source!