Yamaha TT-R90(V) Owner's Service Manual page 348

È
É
IGNITION SYSTEM
"ENGINE STOP" SWITCH INSPECTION
1. Inspect:
• "ENGINE STOP" switch continuity
Tester (+) lead → Black/White lead 1
Tester (–) lead → Black lead 2
1
2
Not continuous in the "
B/W B
Continuous in the "
È TT-R90
É TT-R90E
EC626002
IGNITION COIL INSPECTION
1. Inspect:
• Primary coil resistance
Tester (+) lead → Orange lead 1
Tester (–) lead → Black lead 2
2. Inspect:
• Secondary coil resistance
Tester (+) lead → Spark plug lead 1
Tester (–) lead → Orange lead 2
NOTE:
When inspecting the secondary coil resis-
tance, remove the spark plug cap.
6 - 5
B/W
1
" position → Replace.
Out of specification → Replace.
Primary coil
resistance
0.18 ~ 0.28 Ω at
20 °C (68 °F)
Out of specification → Replace.
Secondary coil
resistance
6.3 ~ 9.5 kΩ at
20 °C (68 °F)
– +
ELEC
B Tester selec-
2
tor position
Ω × 1
" position → Replace.
Tester selector
position
Ω × 1
Tester selector
position
kΩ × 1