Yamaha YZ450F 2021 - Page 293

ELECTRIC STARTING SYSTEM
8-10
9. Check the start switch.
Refer to “CHECKING THE
SWITCHES” on page 8-43.
NG
Replace the start switch.
OK
10.Check the entire starting system’s
wiring.
Refer to “CIRCUIT DIAGRAM” on
page 8-7.
NG
Properly connect or repair the starting sys-
tem’s wiring.
OK
Replace the ECU.