Yamaha TT-R90(T) Owner's Service Manual page 336

ELECTRIC STARTING SYSTEM (TT-R90E)
1
B
START SWITCH INSPECTION
2
1. Inspect:
Start switch continuity
G
B
Tester (+) lead → Black lead 1
Tester (–) lead → Black lead 2
PUSH IN
FREE
Not continuous while being pushed →
Replace.
Continuous while being freed → Replace.
6 - 11
–
ELEC
Tester selec-
B B
tor position
1 2
Ω × 1
+