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 JONSERED 2071, 2071W, 2171, 2071W, CS 2171 (50mm) [#503691271]

$42.13

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Piston Kit fit JONSERED 2071, 2071W, 2171, 2071W, CS 2171 (50mm) Chainsaws [#503691271] and related spare parts.

Details

This listing is about a brand new after-market Piston KitHow to find the size of a piston ring in its original package for the following JONSEREDSpare parts for JONSERED machines models, 50mm in diameter, which replaces OEM Part #503 69 12-71. Note: This item does not fit the EPA editions of the below models:

2071 Turbo
2071 W Turbo
2171
CS 2171

Our Piston Kits are branded and come directly from the top-quality Manufacturer METEOR.
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Protect your valuable JONSERED machine. Use only Branded & High−Quality Parts. Better Safe than Sorry!