Yamaha SR400 2014 Service Manual

ELECTRICAL COMPONENTS7-68▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲EAS28150CHECKING THE STATOR COIL1. Remove:• Stator coil coupler(from the wire harness)2. Check:• Stator coil resistanceOut of specification  Replace the stator coil.▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼a. Connect the pocket tester (  1) to the recti-fier/regulator coupler as shown.b. Measure the stator coil resistance.▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲EAS28170CHECKING THE RECTIFIER/REGULATORTIPBefore checking the rectifier/regulator, check thestator coil.1. Check:• Rectifier/regulator output voltageOut of specification  Replace the rectifi-er/regulator.▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼a. Set the engine tachometer to the spark pluglead.b. Connect the pocket tester (DC 20 V) to therectifier/regulator coupler as shown.c. Start the engine and let it warm up.d. Measure the rectifier/regulator output volt-age.▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲EAS28180CHECKING THE HORN1. Check:• Horn resistanceOut of specification  Replace.Stator coil resistance0.184–0.276  (W-W)Pocket tester90890-03112Analog pocket testerYU-03112-C• Positive tester probewhite “1”• Negative tester probewhite “2”• Positive tester probewhite “1”• Negative tester probewhite “3”• Positive tester probewhite “2”• Negative tester probewhite “3”1 2 3Regulated voltage (DC)14.1–14.9 VPocket tester90890-03112Analog pocket testerYU-03112-C• Positive tester probered “1”• Negative tester probeblack “2”HornCoil resistance1.19–1.25 21