Operation CHARM: Car repair manuals for everyone.
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

Mechanical Specifications

<Except California> <California>
Centrifugal Advance Advance Starts 0 at 600 Degrees At RPM (deg @ rpm)0 at 600 Degrees At RPM (deg @ rpm)
Intermediate Advance 4.5 at 1200 Degrees At RPM (deg @ rpm)4.5 at 1200 Degrees At RPM (deg @ rpm)
Intermediate Advance 13 at 2400 Degrees At RPM (deg @ rpm)13 at 2400 Degrees At RPM (deg @ rpm)
Full Advance 12.4 at 3000 Degrees At RPM (deg @ rpm)12.4 at 3000 Degrees At RPM (deg @ rpm)
Vacuum advance Main Diaphragm Inches of Vacuum to Start Plunger 3.15 Inch Of Mercury (in Hg)3.15 Inch Of Mercury (in Hg)
Maximum Advance 10 at 7.48 Degrees At Inches Mercury (deg @ in hg)12.5 at 13 Degrees At Inches Mercury (deg @ in hg)
Sub. Diaphragm Inches of Vacuum to Start Plunger 7.87 Inch Of Mercury (in Hg)7.87 Inch Of Mercury (in Hg)
Maximum Advance 6 at 11.81 Degrees At Inches Mercury (deg @ in hg)6 at 11.81 Degrees At Inches Mercury (deg @ in hg)