The pinion gear should be inspected for damaged teeth.
If a sticking condition exists between the pinion gear and
the helix, this must be corrected. The parts may be
washed in a solvent such as Stanasol or Varsol. The
gear, retainer, roll pin and clutch assembly are available
from your Briggs & Stratton source of supply if required.
Fig. 87 - Disassembling Starter Motor Drive
ASSEMBLING STARTER MOTOR DRIVE
Assemble the pinion gear with beveled edge on the gear
as shown in Fig. 88. Assemble cup and spring on gear
if original assembly was so equipped. Press or drive the
roll pin through retainer slot and armature shaft hole with
roll pin slot positioned as shown. The roll pin should be
centered in shaft within 1/32" (0.8 mm).
NOTE: ASSEMBLE WITH NEW ROLL PIN
Fig. 88 - Assembling Starter Motor Drive
If the original assembly is equipped with a spring
cap assembly, assemble cap as follows:
To install plastic cap, use a socket approximately
the same diameter as the plastic cap, for a driver
as shown in Figure 89. Press cap in position, cap
should lock in position when properly assembled.
Briggs & Stratton- STARTERS
Gear Drive 12V & 120V
Fig. 89 - Installing Plastic Cap
CHECKING THE STARTER MOTOR
A performance test of the 12 volt DC and 120 volt AC
starter motors may be made in the following manner.
12 VOLT DC STARTER MOTOR
Equipment Needed - (Page 8)
A tachometer capable of reading 10,000 R.P.M.
An ammeter capable of reading 0 to 25 amperes.
A 12 volt : 0.3 battery.
Connect the starter motor, battery and ammeter as
shown on the accompanying illustration. See Fig. 90.
Refer to Fig. 91 for specifications.
NOTE: To test starter motor ON ENGINE, refer to Briggs
& Stratton #19236 VOA meter Instruction Manual.
Fig. 90 - Checking Starter Motor Performance