Yamaha WR450F, Owner'S Service Manual

Page: 694 / 794

6 - 8
– +
ELEC
ELECTRIC STARTING SYSTEM
EC624000
COUPLERS AND LEADS CONNECTION
INSPECTION
1. Check:
• Couplers and leads connection
Rust/dust/looseness/short-circuit
→
Repair or replace.
STARTER MOTOR OPERATION
1. Connect the positive battery terminal
1
and starter motor lead
2
with a jumper
lead
3
.
Not operate
→
Repair or replace the
starter motor.
WARNING
• A wire that is used as a jumper lead must
have at least the same capacity or more
as that of the battery lead, otherwise the
jumper lead may burn.
• This check is likely to produce sparks,
therefore make sure nothing flammable is
in the vicinity.
STARTING CIRCUIT CUT-OFF RELAY
INSPECTION
1. Remove:
• Starting circuit cut-off relay
2. Inspect:
• Starting circuit cut-off relay conduct
Use 12 V battery.
Battery (+) lead
→
Blue/Black lead
1
Battery (–) lead
→
Brown lead
2
Tester (+) lead
→
Blue/White lead
3
Tester (–) lead
→
Black lead
4
L/W
3
B
4
Tester selec-
tor position
Con-
nected to
battery
Ω ××××
1
Not con-
nected to
battery
2
4
3
1