How can I determine whether my piston is reusable so as to replace just the piston rings?

The most common problem of a piston that needs replacement is in case there are scratches on its body.

What other parts I may need to replace when replacing the piston rings?

To replace the piston rings you need to disassemble the engine, so you also need to replace the cylinder gasket.

$6.96

In stock

Piston Ring for TANAKA Chainsaws, Brush cutters, Trimmers, Scooters [#6686123] and related spare parts.

This listing is about a brand new after-market top-quality Piston RingTips for safely installing piston rings made by the well-known OEM firm CABER (Italy), which fits the following TANAKASpare Parts for TANAKA machines models, and replaces OEM Part #6686123. Note: OEM Part #6686123 replaced part #041-04050-200.

Specifications
Country of Origin	Italy
Product Code	1031717
Compatible Brand	TANAKA
Compatible Models	TANAKA TBC400PF, ECS4000B, PBSE803, ECS415, TBC4110, TPB400GX, PF4000, TBC425, TBC430PF, TPK400GS, TBC400, TBC422C, TBC422, TBC420PF, PF4210, PF4010, ECS4000
OEM Part #	04104050200, 6686123