Troubleshooting-Stator Brake System; To Test For Dead Battery; To Test Engine That Will Crank But Will Not Start - Kohler KS530 Service Manual

Electrical System

Troubleshooting-Stator Brake System

NOTE: If removing stator brake relay for testing,
carefully remove sealing tape from around that
relay only. Ensure this area is then resealed with
electrical tape if relay is reinstalled after testing,
to protect relay from debris, etc.
A Stator Brake Relay
Problems that could occur with Kohler portion of circuit
generally could be caused by component failures, which
will create following conditions.
1. Dead battery
2. Engine cranks but will not start

To test for dead battery:

Stator brake relay may have failed and is keeping stator
shorted, so no charge current can be passed from
rectifi er-regulator to battery, eventually allowing battery
to discharge.
1. Check battery voltage using a test meter with
application off .
2. Check battery voltage using a test meter with
application operating at maximum speed.
Battery voltage should increase from engine off condition
to engine full speed condition.
Condition
Voltage does not increase. Shut down engine,
54
A
Conclusion
remove stator brake relay
from its socket and retest
at full engine speed.
If battery voltage does
not increase with engine
operating, problem is
likely not with stator
brake relay. Continue
testing stator and rectifi er-
regulator. Refer to page
Battery Charging System
earlier in this section.
KohlerEngines.com

To test engine that will crank but will not start:

Stator brake relay is interacting with application safeties
or reverse mow electronics, preventing normal engine
start up.
1. Remove brake relay from its socket and attempt to
restart engine.
Condition
Engine starts.
Engine does not start.
2. Remove engine shutdown (kill) white lead from
application wire harness and attempt to start engine
again.
Condition
Engine does not start.
Engine starts.
Conclusion
Relay has failed. Replace
wiring harness.
Problem may exist with
application reverse
mow circuit, application
safeties, or with key
switch keeping ignition
shutdown line tied to
engine ground. Refer to
equipment manual.
Conclusion
Fuel or ignition problem.
White kill wire circuit/
application safety circuit
issue. Refer to equipment
manual.
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