Electrical System
82
62 690 05 Rev. E
KohlerEngines.com
BATTERY CHARGING SYSTEM
CAUTION
Electrical Shock can cause injury.
Do not touch wires while engine is running.
NOTE: Observe following guidelines to avoid damage to
electrical system and components:
● Make sure battery polarity is correct. A negative (-)
ground system is used.
● Disconnect rectifi er-regulator plug and/or wiring
harness plug before doing any electric welding on
equipment powered by engine. Also, disconnect all
other electrical accessories in common ground with
engine.
● Prevent stator (AC) leads from touching or shorting
while engine is running. This could damage stator.
These engines are equipped with a 20 or 25 amp
regulated charging system.
20/25 Amp Regulated Charging System
C
E
F
B
A
D
A
Battery
B
Starter
C
Fuse
D
Rectifi er-Regulator
E
Connector Block
F
Flywheel Stator
Assembly
Stator
Stator is mounted on crankcase behind fl ywheel. Follow
procedures in Disassembly and Reassembly if stator
replacement is necessary.
Rectifi er-Regulator
Rectifi er-regulator is mounted on blower housing. To
replace, disconnect plug(s), remove mounting screws,
and ground wire or metal grounding strap.
BATTERY
A 12-volt battery with 400 cold cranking amps (cca) is
generally recommended for starting in all conditions. A
smaller capacity battery is often suffi cient if an
application is started only in warmer temperatures. Refer
to following table for minimum capacities based on
anticipated ambient temperatures. Actual cold cranking
requirement depends on engine size, application, and
starting temperatures. Cranking requirements increase
as temperatures decrease and battery capacity shrinks.
Refer to equipment's operating instructions for specifi c
battery requirements.
Battery Size Recommendations
Temperature
Battery Required
Above 32°F (0°C)
200 cca minimum
0°F to 32°F (-18°C to 0°C)
250 cca minimum
-5°F to 0°F (-21°C to -18°C)
300 cca minimum
-10°F (-23°C) or below
400 cca minimum
If battery charge is insuffi cient to turn over engine,
recharge battery.
Battery Maintenance
Regular maintenance is necessary to prolong battery
life.
Battery Test
To test battery, follow manufacturer's instructions.
