ELECTRICAL - 2B-7
90-852396 MAY 1996
VOLTAGE REGULATOR TEST (USING OHM
METER)
IMPORTANT: Make sure meter is “zeroed” by
shorting meter leads together after changing se-
lector knob to appropriate setting. The meter
reading must read “0” Ohms.
IMPORTANT: The following regulator tests
should be performed as soon as possible after
suspected regulator failure. A “cold” regulator
may test “GOOD” when in fact it is defective
when “warm”.
Disconnect all voltage regulator wires.
Using Ohm meter, perform each Ohms test listed be-
low:
Test Leads To-
Resistance
(Ohms)
Scale
Diode Check: Con-
nect NEGATIVE (–)
ohm lead to either
YELLOW lead. Con-
nect POSITIVE (+)
test lead to thick
RED lead.
100-400
R x 10
Diode Check: Con-
nect NEGATIVE (–)
ohm lead to thick
RED lead. Connect
POSITIVE (+) ohm
lead to either YEL-
LOW lead.
40K to
∞
R x 1K
SCR Checks: Con-
nect NEGATIVE (–)
ohm lead to either
YELLOW lead. Con-
nect POSITIVE (+)
ohm lead to case
ground.
10K to
∞
R x 1K
Tachometer Circuit
Check: Connect
NEGATIVE (–) ohm
lead to case ground.
Connect POSITIVE
(+) ohm lead to
GRAY lead.
10K to 30K
R x 1K
REMOVAL OF VOLTAGE REGULATOR
1. Disconnect all voltage regulator wires. Remove
two screws securing voltage regulator to ignition
plate.
a
a - Voltage Regulator/Rectifier
2. Remove voltage regulator/rectifier from power-
head.
INSTALLATION OF VOLTAGE
REGULATOR/RECTIFIER
1. Position regulator over ignition plate. Secure with
two screws.
2. Connect YELLOW, RED and GRAY (as required)
leads to their respective bullet connectors.
