Ignition Coil/Plug Cap Inspection - Suzuki RM-Z250 Owner's Service Manual

14-10 ELECTRICAL SYSTEM
• Insert the needle pointed probe A to the lead wire coupler.
NOTE:
Use the special tool (needle pointed probe), to prevent the rub-
ber of the water proof coupler from damage.
• Measure the ignition coil primary peak voltage by depressing
the kick starter lever several times forcefully.
Do not touch the tester probes and spark plugs to pre-
vent an electric shock while testing.
# Ignition coil primary peak voltage
+ Ground – - White/Blue
! 09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
$ Tester knob indication: Voltage (%)
If the peak voltage is lower than the standard range, check the
ignition coil/plug cap as follow.

IGNITION COIL/PLUG CAP INSPECTION

• Remove the seat, radiator covers and fuel tank. ("5-2)
• Disconnect the ignition coil/plug cap lead wire coupler, and
then remove the ignition coil/plug cap. ("14-9)
• Measure the ignition coil/plug cap resistance.
# Ignition coil/plug cap resistance
+ terminal – - terminal
Primary
Plug cap – + terminal
Secondary
! 09900-25008: Multi-circuit tester set
& Tester knob indication: Resistance (Ω)
If the resistance is not within the standard range, replace the
ignition coil/plug cap with a new one.
' WARNING
140 V and more
0.07 – 0.6 Ω
4.8 – 7.1 kΩ
Peak volt
adaptor
To engine
CDI
stop swicth
unit
IG. coil