Yamaha 2004 YXR660 Service Manual page 361

*
7. Main switch
Refer to "CHECKING THE SWITCH".
8. Pickup coil resistance
• Disconnect the A.C. magneto coupler from
the wire harness.
• Connect the pocket tester (Ω × 100) to the
pickup coil terminal.
Tester (+) lead → White/Red terminal 1
Tester (–) lead →
White/Green terminal 2
• Check the pickup coil for the specified
resistance.
Pickup coil resistance
459 ~ 561 Ω at 20 °C (68 °F)
(White/Red – White/Green)
9. Rotor rotation direction detection coil
resistance
• Disconnect the A.C. magneto coupler from
the wire harness.
• Connect the pocket tester (Ω × 1) to the
rotor rotation direction detection coil termi-
nal.
Tester (+) lead → Red terminal 1
Tester (–) lead → White/Blue terminal 2
• Check the rotor rotation direction detection
coil for the specified resistance.
Rotor rotation direction detec-
tion coil resistance
0.063 ~ 0.077 Ω at 20 °C (68 °F)
(Red – White/Blue)
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IGNITION SYSTEM
CORRECT
MEETS
SPECIFICATION
MEETS
SPECIFICATION
9 - 13
INCORRECT
Replace the main switch.
OUT OF SPECIFICATION
Replace the pickup coil/stator assembly.
OUT OF SPECIFICATION
Replace the pickup coil/stator assembly.
– +
ELEC