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

Feedback Control Solenoid: Description and Operation

6-258
This motor is an integral part of the BBD carburetor and controls the metering pins that vary the side of the idle and main air bleed orifices located in the carburetor body. The motor moves the pins in and out of the orifices in steps according to the control voltage generated by the MCU. The motor has a range of 100 steps, but the normal operating range is 40 to 60 steps.