ALTENATOR
AC or DC Only
AC Only Alternator
The AC alternator is designed to operate as an integral
part of the engine. It provides current for lights normally
used on lawn and garden equipment.
Fig. 162 - AC Circuit Alternator
Current for the lights is available as long as the engine is
running. The output depends upon engine speed.
Twelve-volt lights with a total rating of 60 to 100 watts
may be used. With lights rated at 70 watts, the voltage
rises from 8 volts at 2400 RPM to 12 volts at 3600 RPM,
so the brightness of the light changes with the engine
speed. The 5 amp lighting alternator uses less than .2 of
a horsepower at full output.
Fig. 163 - Typical AC Wiring Diagram
The test procedure for this alternator is located in the
Dual Circuit Alternator Section 7, page 54.
DC Only Alternator
The DC alternator is designed to operate as an integral
part of the engine and is separate from the engine
starting system. It is intended to provide DC charging
current for 12 volt batteries. Recommended battery
sizes range from 12 ampere hour for warm temperature
service to 24 ampere hour in coldest service for model
series 130000. Model series 140000 and up range from
20 ampere hour for warm temperature service to 40
ampere hour in coldest service.
Fig. 164 - DC Circuit Alternator
The current from the battery charging alternator is
unregulated and is rated at 3 amperes. The output rises
from 2 amperes at 2400 RPM to 3 amperes at 3600
RPM; the alternator uses less than .2 of a horsepower.
WARNING: For electrical safety always remove cable
from negative (-) side of the battery before attempting
any repairs or maintenance to engine or equipment.
Fig. 165 - Typical DC Wiring Diagram
The test procedure for this alternator is located in the
Dual Circuit Alternator Section 7, pages 52 and 53.
51
