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)

Or, hide this message: temporarily or permanently

General Specifications

Combustion Chamber Volume 47.1-50.1 cc
Valve Guide Bore Diameter
Intake and Exhaust 8.011-7.986 mm (0.315-0.314 in)
Tappet Bore Diameter 22.268-22.230 mm (0.8767-0.8752 in)
Camshaft Bore Inside Diameter
No 1 54.688-54.713 mm (2.1531-2.1541 in)
No 2 54.188-54.213 mm (2.1334-2.1344 in)
No 3 54.188-54.213 mm (2.1334-2.1344 in)
No 4 54.688-54.713 mm (2.1531-2.1541 in)
Gasket Surface Flatness 0.018 mm (0.0007 in)