Tecumseh HH100 Handbook page 54

D.C. VOLTMETER
RECT. - REG.
52
TEST NO. 4 (BATTERY ALWAYS CHARGING AT HIGH RATE)
Check B+ to ground voltage with D.C. voltmeter.
1. If over 14.8 volts at 2500 RPM,
3000 RPM, and 3600 RPM.
2. If under 14.4 volts @ 2500 RPM.
TEST NO. 5 (BATTERY BOILING OR FUMING).
Check B+ to ground voltage with D.C. voltmeter.
1. If over 14.8 volts.
Visual check for overfilling.
GREEN
YELLOW
YELLOW
YELLOW
YELLOW
GREEN
GREEN
RED
FUSE
RED
1. Regulator is not functioning.
2. Battery charge low. Alternator okay,
@ 3000 RPM. check battery.
@ 3600 RPM.
1. Regulator not functioning.
Overfilled battery may appear to fume
due to expansion.
TEST SETUP ON NEW 20 AMP. SYSTEMS WITH RECTIFIER-
REGULATOR IN BLOWER HOUSING. TEST VALUES SAME
AS ORIGINAL 20 AMP. SYSTEM.
SWITCH
R B
M
D.C.VOLTMETER
BATTERY