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 McCULLOCH PROMAC 543 Chainsaw (46mm)

$40.38

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Piston Kit for McCULLOCH PROMAC 543 Chainsaw (46mm) 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 McCullochSpare parts for McCULLOCH machines PROMAC 543 model, 46mm in diameter.

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

Specifications
Country of Origin	Italy
Product Code	1003769
Compatible Brand	McCULLOCH
Compatible Models	McCULLOCH PRO MAC 543
OEM Part #	503608171

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