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 ECHO CS302, SRM302, CRAFTSMAN 1.8a, JOHN DEERE 30 (37mm)

$35.40

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Piston Kit for ECHO CS302, SRM302 brush-cutter, CRAFTSMAN 1.8a, JOHN DEERE 30 chainsaws (37mm) [#10000003930] and related spare parts.

Details

This listing is about a brand new after-market Piston KitHow to find the size of a piston ring, made by METEOR, that fits the following ECHOSpare parts for ECHO machines models, 37mm in diameter, and replaces OEM Part #100000-03930:

ECHO CS-302
ECHO SRM-302 ADX
CRAFTSMANSpare Parts for CRAFTSMAN machines 1.8a
JOHN DEERESpare Parts for JOHN DEERE machines 30

Note: ECHO OEM Part #100000-03930 replaced part #100010-03930. JOHN DEERE OEM Part #AM119515 replaced part #AM54512. This piston kit does not fit ECHO CS-302S model with bore size 39mm.

Our Piston Kits are branded and come directly from the top-quality Manufacturer METEOR.
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