Service manual

ELECTRICAL
TEST 1: Resistance Value of Each Stator Leg
1. Measure the resistance value of each of the three stator
legs: Y1 to Y2, Y1 to Y3, and Y2 to Y3.
Each should measure 0.7--1.0 ohms
2. When measuring any of the Yellow wires to ground, the
reading should be infinite (open).
NOTE: If there are any significant variations in ohm’s
readings between the three legs; it is an indication that one
of the three stator legs maybe weak or failed.
TEST 2:Resistance Value of Stator Leg to Ground
1. Measure the resistance value of each of the stator
legs to ground: Y1 to Ground, Y2 to Ground, Y3 to
Ground.
NOTE: Any measurement other than Infinity (open)
will indicate a failed or shorted stator leg.
TEST 3: Measure AC Voltage Output of Each
Stator Leg at Charging RPM with a voltmeter set to
Volts AC.
1. Place the red lead on the tester in the 10A jack.
2. Turn the selector dial to the Volts AC position.
3. Start the engine and let it idle.
4. Separately test each ’leg’ of the stator by connecting
the meter leads to the wires leading from the alternator
(Y1 to Y2, Y1 to Y3, Y2 to Y3).
Alternator Current Output Reading should be no less
than 30--40V AC above 2000 RPM on each ’leg’.
NOTE: If one or more of the stator leg output AC voltage
varies significantly from the specified value, the stator
may need to be replaced.
CDI OUTPUT TEST USING PEAK READING
ADAPTOR OR A VOLT METER
Re-connect all CDI wires to stator wires. Disconnect
CDI module wire from ignition coil primary terminal.
Connect one meter lead to engine ground and the other
to the ignition coil primary wire leading from the
CDI module. Crank engine and check output of CDI wire
to coil. Reconnect coil wire to CDI.
Test Connect meter wire
to:
Reading
CDI output B/Y to
Engine Ground
240DC Volts ±
20%
CDI OUTPUT TEST USING PEAK READING
ADAPTOR
Re-connect all CDI wires to stator wires. Disconnect
CDI module wire from ignition coil primary terminal.
Connect one meter lead to engine ground and the other
to the ignition coil primary wire leading from the
CDI module. Set meter to read DC Volts. Crank
engine and check output of CDI wire to coil.
Average Output w/ Digital Voltmeter
20 DCV
9.14