Component Testing
For accurate resistance and/or continuity checks, elec-
trically disconnect the component being tested from the
circuit (e.g. unplug the ignition switch connector before
doing a continuity check).
Note: See the Perkins 100 Series Workshop Manu-
al for more component testing information.
Ignition Switch
The ignition (key) switch has three positions (OFF, RUN,
and START). The terminals are marked as shown. The
circuitry of the ignition switch is shown in the chart. With
the use of a multimeter (ohms setting), the switch func-
tions may be tested to determine whether continuity ex-
ists between the various terminals for each position.
Verify continuity between switch terminals.
POSITION
OFF
RUN
START
Electrical System
CIRCUIT
NONE
B + I + A, X + Y
B + I + S
When testing electrical components for
continuity with a multimeter (ohms set-
ting), make sure that power to the circuit
has been disconnected.
SWITCH
Page 6 – 24
CAUTION
A
B
Y
S
X
I
HEX NUT
LOCK WASHER
Figure 7
Greensmaster 3200/3200–D
KEY