Yamaha WR450F, Owner'S Service Manual

Page: 698 / 794

6 - 10
– +
ELEC
ELECTRIC STARTING SYSTEM
DIODE INSPECTION
1. Remove the diode from wire harness.
2. Inspect:
• Diode continuity
Use pocket tester (tester selection posi-
tion
Ω ×
1)
Incorrect continuity
→
Replace.
Tester (+)
→
Blue/Red terminal
1
Tester (–)
→
Sky blue terminal
2
Continuous
Tester (+)
→
Blue/Red terminal
1
Tester (–)
→
Blue/Yellow terminal
3
Continuous
Tester (+)
→
Sky blue terminal
2
Tester (–)
→
Blue/Red terminal
1
No continuous
Tester (+)
→
Blue/Yellow terminal
3
Tester (–)
→
Blue/Red terminal
1
No continuous
START SWITCH INSPECTION
1. Inspect:
• Start switch continuity
No continuous while being pushed
→
Replace.
Continuous while being freed
→
Replace.
2. Inspect:
• Rubber part
a
Tears/damage
→
Replace.
Tester (+) lead
→
Black lead
1
Tester (–) lead
→
Black lead
2
B
1
B
2
Tester selec-
tor position
PUSH IN
Ω ××××
1
FREE
a