Yamaha TT-R90(R) Owner's Service Manual page 270

Å
ı
IGNITION SYSTEM
EC622001
SPARK GAP TEST
1. Disconnect the spark plug cap from spark
plug.
2. Connect the dynamic spark tester 1
(ignition checker 2) as shown.
Spark plug cap 3
G
Spark plug 4
G
Å For USA and CDN
ı Except for USA and CDN
3. Kick the kick starter.
4. Check the ignition spark gap.
5. Start engine, and increase spark gap until
misfire occurs. (for USA and CDN only)
Minimum spark gap:
6.0 mm (0.24 in)
EC624000
COUPLERS AND LEADS CONNECTION
INSPECTION
1. Check:
Couplers and leads connection
G
Rust/dust/looseness/short-circuit →
Repair or replace.
"ENGINE STOP" SWITCH INSPECTION
1. Inspect:
"ENGINE STOP" switch continuity
G
Tester (+) lead → Black/White lead 1
Tester (–) lead → Black lead 2
No continuous while being pushed "
Replace.
Continuous while being pushed "
Replace.
6 - 3
–
ELEC
Tester selec-
B/W B
tor position
1 2
Ω × 1
+
" →
" →