Yamaha TT-R90E 2003 Manuel D'atelier Du Proprietaire page 314

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