28
Electrical System
KohlerEngines.com
18 690 06 Rev. --
Electronic Ignition System Tests
1. Disconnect cap from spark plug and attach it to
terminal end of spark tester. Attach tester spring clip
to a good ground, not to spark plug. Turn ignition
switch ON and crank engine while observing
fi
ring
tip of tester.
Condition
Conclusion
Tester is
fi
ring.
Ignition system is good.
Install a new spark plug
and try to start engine. If it
still will not start, check
other possible causes
(fuel, compression, etc.).
Tester doesn't
fi
re.
Unplug switch wire from
ignition module and retest
as described in test 1. If
no spark is present go to
step 2.
2. Set an ohmmeter to Rx1 scale and zero meter. Test
ignition switch as follows.
a. Trace two black leads from on/off switch and
separate them from any connections. Connect
ohmmeter leads to switch leads, and check for
continuity in both switch positions.
Condition
Conclusion
Continuity should be
indicated when and only
when switch is in OFF
position.
Replace switch for any
other results.
BATTERY CHARGING SYSTEMS
Wiring Diagram-Retractable Starter
A
C
B
A
Ignition Module
B
Spark Plug
C
Ignition Switch
NOTE: Observe following guidelines to avoid damage to
electrical system and components:
●
Make sure battery polarity is correct. A negative (-)
ground system is used.
●
Make sure all ground connections are secure and in
good condition.
●
Disconnect both battery cables before doing electrical
welding on equipment powered by engine. Also,
disconnect other electrical accessories in common
ground with engine.
●
Prevent stator (AC) leads from touching or shorting
while engine is running. This could damage stator.
Most engines are equipped with a 3 or 10 amp regulated
battery charging system.
3/10 Amp Regulated Charging System
Stator
Stator is mounted on crankcase behind
fl
ywheel.
Should stator have to be replaced, follow procedures in
Disassembly.
Recti
fi
er-Regulator
NOTE: When installing recti
fi
er-regulator, push wiring
harness plug into regulator receptacle until it
locks into place.
Recti
fi
er-regulator is connected to engine with a
matching wiring harness containing a plug-in connector.
Grounded through wiring harness, recti
fi
er-regulator
is secured to equipment in a suitable location with two
mounting screws. To replace it, disconnect plug, and
remove two mounting screws.
Recti
fi
er-regulator converts AC voltage coming from
stator to DC voltage, while also monitoring and
controlling battery voltage.
Recti
fi
ed Only (non-regulated) Systems
Some engines are equipped with a recti
fi
ed only,
non-regulated charging system. Recti
fi
er is normally
connected to engine with a matching wiring harness and
secured inside control panel. Grounding is achieved
through wiring harness. Recti
fi
er converts AC voltage
coming from stator to DC voltage only.
