Component Testing
This section will define given components, and the tests
that can be performed on those components, when
those parts are disconnected from the electrical system.
NOTE: Electrical troubleshooting of any 12 Volt power
connection can also be performed through voltage drop
tests without disconnection of the component.
For accurate resistance and/or continuity checks, elec-
trically disconnect the component being tested from the
circuit (e.g. unplug the clutch switch connector before
doing a continuity check).
CAUTION
When testing electrical components for continu-
ity with a volt–ohm meter or continuity tester,
make sure that power to the circuit has been dis-
connected.
Ignition Key Switch
The ignition key switch has three positions (OFF, START
and RUN). The terminals are marked as shown in Figure
A
Y
4.
The circuitry of the ignition switch is shown in the chart
B
(Fig. 5). With the use of a continuity tester, the switch
functions may be tested to determine whether all circuits
are being completed while the key is moved to each
position.
S
I
X
Figure 4
POSITION
CONTINUITY
AMONG
TERMINALS
OTHER
CIRCUITS
MADE
1.
2.
3.
OFF
NONE
NONE
RUN
B+A+I
X+Y
START
B+S+I
NONE
Figure 5
Workman 3000/4000 Series
Page 8 – 7
Electrical System
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