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

System Specifications

2.0L EFI 1988 Ranger/Bronco II
Carb. Model E77E-AA

FLOAT
Float Level (Dry) 0.787
Float Drop 1.854

CHOKE
Pulldown 1st Stage 17-19
Pulldown 2nd Stage 40-44
De-Choke 195 Sec. ± 50 Sec.
Choke Cap Setting 20° C

IDLE
Fast Idle Cam Setting 14.5° on Step No. 1

Propane Specifications:
Gain RPM 20 to 100 RPM
Reset RPM 60 RPM