Ignition System - Yamaha TZ250M1 Owner's Service Manual

EC620000

IGNITION SYSTEM

EC621030
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.
Check fuse.
OK
*1 Check battery
OK
Spark gap test
No spark
Check spark plug cap.
OK
Check entire ignition
system for connection.
OK
Check main switch.
OK
Check ignition coil.
OK
Check CDI magneto.
OK
Replace CDI unit.
*1 marked : Refer to "BATTERY INSPECTION" section in the CHAPTER 3.
*2 marked : Only when the ignition checker is used.
NOTE:
• Remove the following parts before inspection.
1) Cowling
2) Fuel tank
• Use the following special tools in this inspection.
C
Dynamic spark tester:
YM-34487
Ignition checker:
90890-06754
IGNITION SYSTEM
No good
No good
Spark
No good
No good
No good
No good
Primary coil
No good
Secondary coil
No good
Pick-up coil
No good
Source coil
A
3) Seat
Pocket tester:
YU-03112/90890-03112
6-2
ELEC
Replace fuse and
check wireharness.
Recharge or replace.
*2 Clean or replace
spark plug.
Replace.
Repair or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
6