Starting Circuit Cut-Off System - Yamaha VMX12H Supplementary Service Manual

ELECTRIC STARTING SYSTEM
I
7-9

STARTING CIRCUIT CUT-OFF SYSTEM

A starting circuit cut-off system is employed,
and operates as follows:
Starting Circuit Operation
The starting circuit on this model consist of
the starter motor, starter relay, and the relay
unit (starting circuit cut-off relay). I f the engine
stop switch and the main switch are both on,
the starter motor can operate only if:
The transmission is in neutral (the neutral
switch is on).
The clutch lever is pulled to the handlebar
(the clutch switch is on) and the sidestand
is up (the sidestand switch is on.)
I
The starting circuit cut-off relay prevents the
starter from operating when neither of these
conditions has been met. In this instance, the
starting circuit cut-off relay is off so current
cannot reach the starter motor.
When one of both of the above conditons
have been met, however, the starting circuit
cut-off relay is on, and the engine can be started
by pressing the starter switch.
WHEN THE TRANSMISSION
NEURTAL
WHEN THE SIDESTAND IS UP AND
THE CLUTCH LEVER IS PULLED IN
WHEN THE ENGINE IS RUNNING
Battery
Starter motor
Starter relay
Starting circuit cut-off relay
Starter switch
Neutral switch
7 Sidestand switch
Clutch switch
Sidestand relay
To V-boost valve control unit
To
main switch
To engine stop switch
ignitor unit
TO
or if
IS
IN