Yamaha WR250F(N) Owner's Service Manual page 612

Å
ı
IGNITION SYSTEM
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
Spark plug 4
Å For USA and CDN
ı Except for USA and CDN
3. Kick the kickstarter crank.
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
Rust/dust/looseness/short-circuit
Repair or replace.
ENGINE STOP SWITCH INSPECTION
1. Inspect:
Engine stop switch conduct
Tester (+) lead
Tester (–) lead
PUSH IN
FREE
No continuous while being pushed
Continuous while being freed
6 - 4
–
ELEC
Black/White lead 1
Black lead 2
Tester selec-
B/W B
tor position
1 2
Replace.
Replace.
+
1