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

Compression Check

Compression pressure
at 250 rpm STD 1,471 kPa (15.0 kgf-cm 2, 213 psi)
Minimum 1,079 kPa (11.0 kgf-cm 2, 156 psi)
Difference between each cylinder 98 kPa (1.0 kgf/cm2, 14 psi)
at cold Intake 0. 15 - 0.25 mm (0.006 - 0.010 inch)
Exhaust 0.25 - 0.35 mm (0.010 - 0.014 inch)