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ELECTRICAL SYSTEMS
Equipment Used for Testing
Digital Multimeter
A digital multimeter is recommended for all
electrical testing of Briggs & Stratton engines.
The meter can be used to read volts, ohms,
amperes, and to test diodes.
The Fluke® Digital Multimeter #19464 and the
UNI-T® Digital Multimeter #19581 are available
from your Briggs & Stratton source of supply.
NOTICE: The digital multimeters are equipped
with fuses to prevent damage to the meter if the
input limits are exceeded. Check the fuses if the
meter displays a reading of 0.00 when testing
DC Volts output.
Refer to the Fluke® Operator’s Manual for this
procedure. Replacement fuses #19449 for Series
II meters or #19571 for Series III meters are
available from your Briggs & Stratton source of
supply.
The UNI-T® Operator’s Manual lists the fuse
replacement procedure and type of replacement
fuses required.
DC Shunt
The Fluke® meter will withstand DC input of 10-
20 amps for up to 30 seconds.
The UNI-T® meter will withstand DC input of 10
amps for up to 10 seconds.
When checking DC output on 10 and 16 amp
regulated systems, the DC Shunt #19468
(Figure 5) is required to avoid blowing a fuse in
either of the meters.
Figure 5
Tachometer
Tachometers #19200 (A) or #19389 (B, Figure 6)
are available from your Briggs & Stratton source
of supply.
Figure 6
Starter Motor Test Fixture
A starter motor test fixture may be made from
1/4” (6mm) steel stock (Figure 7).
1. Extra hole for mounting starter brackets
(A).
2. Drill two 3/8” (10mm) holes for starter
mounting bracket (B).
3. Drill two holes for mounting Tachometer
#19200. Drill and tap the holes for 1/4-20
NC screws (C).
Figure 7
Other Equipment
A growler or armature tester (checks armature
for continuity, shorts, and opens) is available
from an Automobile Diagnostic Service supplier.
Also, a known good 12 Volt battery is required
when testing starting systems or alternators.