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 STIHL MS661, MS 661 C-M RVWZ/RZ/W/Z, Magnum (56mm) [#11440302001]

$59.19

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Piston Kit for STIHL MS661, MS 661 C-M RVWZ/RZ/W/Z, Magnum (56mm) Chainsaws [#11440302001] 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 STIHLSpare parts for STIHL machines models, 56mm in diameter, which replaces OEM Part #1144 030 2001:

MS 661
MS 661 C-M
MS 661 C-M RVWZ Magnum
MS 661 C-M RZ Magnum
MS 661 C-M W
MS 661 C-M Z Magnum
MS 661 Magnum

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