Yamaha MT-09 2021 - Starting Circuit Cut-Off System Operation

8-13
ELECTRIC STARTING SYSTEM
EAS30494
STARTING CIRCUIT CUT-OFF SYSTEM OPERATION
If the main switch is turned to “ON” and the “ ” side of the stop/run/start switch is pushed, the starter
motor can only operate if at least one of the following conditions is met:
• The transmission is in neutral (the neutral switch is closed).
• The clutch lever is pulled to the handlebar (the clutch switch is closed) and the sidestand is up (the
sidestand switch is closed).
The starting circuit cut-off relay prevents the starter motor from operating when neither of these condi-
tions has been met. In this instance, the starting circuit cut-off relay is open so current cannot reach the
starter motor. When at least one of the above conditions has been met, the starting circuit cut-off relay
is closed and the engine can be started by pressing the “ ” side of the stop/run/start switch.
12
1
11
4
66
6
6
a
b
8
6
9
7
5
2
3
10
10
a. WHEN THE TRANSMISSION IS IN NEU-
TRAL
b. WHEN THE SIDESTAND IS UP AND THE
CLUTCH LEVER IS PULLED TO THE HAN-
DLEBAR
1. Battery
2. Main fuse
3. Main switch
4. Ignition fuse 1
5. Starting circuit cut-off relay
6. Relay unit (diode)
7. Clutch switch
8. Sidestand switch
9. Neutral switch
10. Stop/run/start switch
11. Starter relay
12. Starter motor