Yamaha MBK YQ100 Service Manual page 197

6.Ignition coil resistance
• Disconnect the ignition coil leads.
• Connect the pocket tester (Ωx1) to the igni-
tion coil.
Pocket tester (+) lead → → → → → Orange
Pocket tester (-) lead → → → → → Black
• Check the primary coil resistance.
Primary coil resistance:
0.32 ~ 0.48
• Connect the pocket tester (Ωx1k) to the
ignition coil.
Pocket tester (+) lead → → → → → Ground
Pocket tester (-) lead → → → → → Spark plug lead
• Check the secondary coil resistance.
Secondary coil resistance:
5,68 ~ 8,52 k
7.Pickup coil resistance
• Disconnect the pickup coil coupler.
• Connect the pocket tester (Ωx100) to the
pickup coil.
Pocket tester (+) lead → → → → → White/Red
Pocket tester (-) lead → → → → → White/Blue
• Check the pickup coil resistance.
Pickup coil resistance:
Ω
400 ~ 600
IGNITION AND STARTER SYSTEM
Ω °
(20 C)
Ω °
(20 C)
MEETS
SPECIFICATION
°
at 20 C
MEETS
SPECIFICATION
DOES NOT MEET SPECIFICATION
Defect. Replace the ignition coil.
W
YR
DOES NOT MEET SPECIFICATION
Replace the pickup coil.
7-10
ELEC
Ω x 1
Ω x 1k
GW
BR
BR GW
WR
WR WL
WL