Yamaha TT-R90E Owner's Service Manual page 314

ELECTRIC STARTING SYSTEM
START SWITCH INSPECTION
2
1 1. Inspect:
B B
No continuous while being pushed → Replace.
Continuous while being freed → Replace.
6 - 10
Start switch continuity
G
Tester (+) lead → Black lead 1
Tester (–) lead → Black lead 2
B
1
PUSH IN
FREE
– +
ELEC
Tester selec-
B
tor position
2
Ω × 1