Yamaha YZ250X 2022 Owner's Service Manual

ELECTRICAL COMPONENTS8-9c. Measure the primary coil resistance.2. Check:• Secondary coil resistanceOut of specification  Replace.a. Connect the digital circuit tester () to theignition coil as shown.b. Measure the secondary coil resistance.EAM30583CHECKING THE PICKUP COIL1. Disconnect:• Pickup coil coupler(from the wire harness)2. Check:• Pickup coil resistanceOut of specification  Replace.a. Connect the digital circuit tester () to thepickup coil coupler as shown.b. Measure the pickup coil resistance.EAM30584CHECKING THE SOURCE COIL1. Disconnect:• CDI magneto coupler(from the wire harness)2. Check:• Charging coil 1 resistance(B/R–B)Out of specification  Replace the CDI mag-neto.a. Connect the digital circuit tester () to theCDI magneto coupler as shown.Secondary coil resistance9.52–14.28 kDigital circuit tester (CD732)90890-03243Model 88 Multimeter with tachom-eterYU-A1927• Positive tester probe High tension cord “1”• Negative tester probe Yellow “2”Pickup coil resistance248.0–372.0 Digital circuit tester (CD732)90890-03243Model 88 Multimeter with tachom-eterYU-A1927• Positive tester probe White/Red “1”• Negative tester probe White/Blue “2”Charging coil 1 resistance720.0–1080.0 Digital circuit tester (CD732)90890-03243Model 88 Multimeter with tachom-eterYU-A1927• Positive tester probe Black/Red “1”• Negative tester probe Black “2”