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Ignition System - Yamaha TT-R125EW Owner's Service Manual

Lit-11626-20-01; 1b2-f8199-12.
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EC620000

IGNITION SYSTEM

INSPECTION STEPS
Use the following steps for checking the possibility of the malfunctioning engine being attributable to
ignition system failure and for checking the spark plug which will not spark.
Spark gap test
Check entire ignition
system for connection.
Check main switch.
(TT-R125E/TT-R125LWE
only)
Check engine stop switch.
Check ignition coil.
Check CDI magneto.
Replace CDI unit.
*marked: Only when the ignition checker is used.
NOTE:
Remove the following parts before inspection.
1) Seat
2) Fuel tank
Use the following special tools in this inspection.
Dynamic spark tester:
YM-34487
Ignition checker:
90890-06754
No Spark
OK
OK
OK
Primary coil
Secondary coil
OK
Pickup coil
Source coil
OK
IGNITION SYSTEM
Spark
No good
No good
No good
No good
No good
No good
No good
Pocket tester:
YU-3112-C/90890-03112
6 - 3
+
ELEC
*Clean or replace
spark plug.
Repair or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.

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This manual is also suitable for:

Tt-r125lwTt-r125lew

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