SAFETY INTERLOCK CIRCUIT ON VEHICLE
SEAT
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WARNING:
Never return an engine to the
owner with the safety interlock system removed or
bypassed.
Great bodily harm or equipment damage could
result.
Interlocks connected to an engine with a battery
ignition syste m are bypassed simply by placing a
jum per wire as shown in Figure 8-22 .
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WARNING:
Make sure all safety conditions
have been observed before starting an engine with
the interlocks bypassed.
The safety interlock system on manual start mag
neto ignition engines is placed in the ignition sys
tem . The series connected interlock switches are
connected to a solid state module that is con
nected to the ignition system . The module serves
two functions. It grounds the ignition system until
all interlocks have closed and , after the engine
has started , it prevents the ignition from grounding
as the individual interlocks are opened in normal
operation (transmission placed in Drive , PTO en
gaged , etc . ) . Refer to Figure 8-23.
JUMPER (TEST ONLY)
BATTERY
Figure 8-22 . Battery Ignition I nterlock Bypass.
SMALL TERMINAL ---- -.,.:
SOLENOID
Brush Replacement
(Refer to Figure 8-23. )
B rush Springs
\
Brush H older
Figure 8-23. Comm utator End Cap With Brushes.
1 .
Remove the brush springs from the pockets in
brush holder.
2 .
Remove the self-tapping screws and negative
(-) brushes .
3 .
Remove hex nut , split lock washer, plain wash
er, and fiber washer from the stud terminal .
Remove the stud terminal with positive
brushes , and plastic brush holder from end cap .
Stud Terminal With
Positive (+) Brushes
-
Negative (
)
Brushes
(+)
8. 1 9
: