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 FS250, FS250 R, FR350, FS350 (40mm) [#41340302003]

$36.37

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Piston Kit fit STIHL FS250, FS250 R, FR350, FS350 (40mm) [#41340302003] brush-cutters 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, 40mm in diameter, and replaces OEM Part #4134 030 2003:

FS 250
FS 250 R

FR 350 (Machine Numbers after 1 66 796 806)
FS 350 (Machine Numbers after 1 66 796 134)

Note: This piston kit does not fit older editions of FR350 and FS350 models with bore size 38mm.

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