1-1/2 AMP ALTERNATOR Used on Model Series
The integral 1-1/2 ampere alternator, with solid state
rectifier, is designed for use with a compact battery. A
12 ampere hour battery is suggested for warm
temperature operation and a 24 ampere hour battery
should be used in cold service.
The alternator is rated at 3600 RPM. At lower speeds
available output is reduced.
Fig. 150 - Alternator Assembly
WHEN CHECKING ALTERNATOR COMPONENTS,
MAKE THE TESTS IN THE FOLLOWING SEQUENCE:
Condition Found (Battery Run Down)
Check battery polarity. Negative (-) side of battery
should be grounded to engine or frame: positive (+) side
of battery to starter motor and alternator charge lead.
Figure 151. If reversed, rectifier will be damaged.
Fig. 151 - Typical Wiring Installation
Testing for Output
Disconnect connector or charging lead from charging
terminal. Fig. 152 and 153. Do not allow terminal on
charging lead to touch engine or equipment. Clip 12 volt
load lamp between charging terminal and ground. Start
engine. if lamp lights, alternator is functioning. If lamp
does not light, alternator system is defective. The same
test may be performed using 19236 Briggs & Stratton
Fig. 152 - Checking Output
Fig. 153 - Checking Output, (Alternate Style)
Unplug connector or disconnect charging lead from
battery and rectifier assembly on alternate style.
Remove screw from ground wire or rectifier assembly
from starter motor. Turn rectifier assembly to expose
wires attached to soldered terminals on alternate style.