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Magneto Coils
VOLTAGE (Stator Coil - Output)
NOTE: This test should be completed with a fully
charged battery.
1. Set the meter selector to the AC Voltage position.
2. With the stator wires connected to the harness, per-
form a total of three tests in between the three wires.
With the engine running, the meter should read at
least 7-10 AC volts.
NOTE: If voltage is lower than specified, test stator
coil - no load.
VOLTAGE (Stator Coil - No Load)
The connector is the black and white one on the right side
of the engine just above the brake cable adjuster.
NOTE: Test the connector that comes from the
engine.
1. Set the meter selector to the AC Voltage position.
2. Test between the three yellow wires for a total of
three tests.
3. With the engine running at the specified RPM, all
wire tests must show as specified.
NOTE: If both voltage tests failed, check all connec-
tions, etc., and test again. If no voltage is present,
replace the stator assembly.
RESISTANCE (Charging Coil)
1. Set the meter selector to OHMS position.
2. Test between the three yellow wires for a total of
three tests.
3. The meter reading must be within specification.
RESISTANCE (Trigger Coil)
1. Set the meter selector to the OHMS position.
2. Connect the red tester lead to the blue/yellow wire;
then connect the black tester lead to the green/white
wire. The meter reading must be within specification.
Regulator/Rectifier
The regulator/rectifier is located on the right side of the
frame. Verify all other charging system components
before the regulator/rectifier is replaced.
TESTING
1. Start the engine and warm up to normal operating
temperature; then connect a multimeter to the battery
as follows.
2. Select the DC Voltage position; then connect the red
tester lead to the positive battery post and the black
tester lead to the negative battery post.
3. Start the engine and slowly increase RPM. The volt-
age should increase with the engine RPM to a maxi-
mum of 15.5 DC volts.
NOTE: If voltage rises above 15.5 DC volts, the reg-
ulator is faulty or a battery connection is loose or cor-
roded. Clean and tighten battery connections or
replace the regulator/rectifier. If voltage does not rise,
check Voltage (Stator Coil - No Load) sub-section. If
charging coil voltage is normal, replace the regula-
tor/rectifier.
Starter Motor
NOTE: The starter motor is not a serviceable com-
ponent. If the starter motor does not operate, see
Starter Relay in this section. If the relay tests normal,
replace the starter motor.
REMOVING/INSTALLING
1. Disconnect the battery.
2. Remove the nut securing the positive cable to the
starter; then remove the cable from the starter.
3. Remove the two cap screws securing the starter to
the crankcase; then remove the starter. Account for
the wiring forms and an O-ring.
4. Install the new starter motor.
Starter Relay
VOLTAGE
1. Set the meter selector to the DC Voltage position.
2. Connect the red tester lead to the battery supply ter-
minal (1); then connect the black lead to the starter
terminal (2).
CAUTION
Do not run the engine at high RPM for more than 10 sec-
onds.
CAUTION
Do not run the engine at high RPM for more than 10 sec-
onds.
CAUTION
Always disconnect the negative battery cable from the
battery first; then disconnect the positive cable.
Содержание Altera 300
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