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12
CARBURETOR CONTROLS (11K)
The Needle-Valve:
The Mixture Control Valve:
Four adjustable controls are provided on
this carburetor.
For adjusting the mixture strength when the
throttle is fully open.
For changing the mixture strength at mid
speed and acceleration. (Do not rotate the
screw more chan one turn.)
The Throttle Stop Screw:
For setting the minimum idle speed:
For adjusting the mixture strength at part-
throttle and idle speed, to obtain steady
idling and smooth acceleration to mid speed.
The Metering Needle:
NOTE: Readjustment may be necessary,
occasionally to allow for changes in fuel
formula, gear ratio or clutch engagement
point.
Metering Needle
Throttle Stop
Screw
Mixture Control Valve
Needle Valve
Thermo Insulator
13
CARBURETOR CONTROLS (11L)
The Needle-Valve:
The Mixture Control Screw:
The Throttle Stop Screw:
For adjusting the mixture strength when the
throttle is fully open.
For adjusting the mixture strength at part-
throttle and idle speed, to obtain steady
idling and smooth acceleration to mid
speed.
For setting the minimum idle speed:
Throttle Stop
Screw
Mixture Control Valve
Needle Valve
Thermo Insulator
NOTE: Readjustment may be necessary,
occasionally to allow for changes in fuel
formula, gear ratio or clutch engagement
point.
Three adjustable controls are provided on
this carburetor.