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 OLEO-MAC GST250 - EFCO MTT2500 Chainsaws (34mm) [#50290152]

$36.54

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Piston Kit for OLEO-MAC GST250 - EFCO MTT2500 Chainsaws (34mm) [#50290152] 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 OLEO-MACSpare parts for OLEO-MAC machines GST250 and EFCOSpare parts for EFCO machines MTT250 chainsaws, 34mm in diameter, which replaces OEM Part #50290152.

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