Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Piston: Specifications

Piston
Piston outer diameter
Specification 87.975 - 88.005 mm (3.4636 - 3.4648 in)
Piston to cylinder clearance
Specification 0.015 - 0.035 mm (0.0028 - 0.0014 in)
Ring groove width
No. 1 ring groove
Specification 1.22 - 1.24 mm (0.0006 - 0.0488 in)
Limit 1.26 mm (0.0496 in)
No. 2 ring groove
Specification 1.22 - 1.24 mm (0.0480 - 0.0488 in)
Limit 1.26 mm (0.0496 in)
Oil ring groove
Specification 2.01 - 2.03 mm (0.0791 - 0.0799 in)
Limit 2.05 mm (0.0807 in)