Service manual

3. Electrical Parts
3-20
Pin
No.
Line
color
Connection Function
F-23 B
Speed control knob (Engine
speed potentiometer) (-) terminal
Grounding
F-24 W
Speed control knob (Engine
speed potentiometer) signal
input terminal
Engine speed can be adjusted minutely by
changing resistance between F-24 and F-23
terminals.
F-25 R
Speed control knob (Engine
speed potentiometer) (+)
terminal
+5V