Yamaha MBK YQ100 Service Manual page 198

8.Source coil resistance
• Disconnect the source coil coupler from the
wire harness.
• Connect the pocket tester (Ωx100) to the
source coil.
Pocket tester (+) lead → → → → → Black/Red
Pocket tester (-) lead → → → → → Green/white
• Check the source coil resistance.
Source coil resistance:
Ω
640 ~ 960
9.Main switch
Refer to "SWITCH INSPECTION" section.
10.Connections
• Check all connections in the ignition sys-
tem.
Refer to "WIRING DIAGRAM".
Replace the CDI unit.
IGNITION AND STARTING SYSTEM
MEETS
SPECIFICATION
°
at 20 C
MEETS
SPECIFICATION
CONTINUITY
GOOD
CONNECTIONS
W
YR
Replace the source coil.
NO CONTINUITY
Replace the main switch.
POOR CONNECTIONS
Repair
7-11
ELEC
GW
BR
BR GW
WR
WR WL
WL