Mechanical Governor; Remove Governor Gear; Inspect Governor Gear; Remove Governor Shaft - Briggs & Stratton Twin Cylinder L-Head Repair Manual

MECHANICAL GOVERNOR

Remove Governor Gear

The governor gear is located in the crankcase cover on
horizontal crankshaft engines or in the sump on vertical
crankshaft engines.
Drain oil and remove engine from equipment. Remove
spark plugs.
1. To relieve cam gear bearing pressure on the cover
or sump, rotate crankshaft until #1 cylinder intake
valve is open.
2. Remove rust, nicks and burrs from crankshaft
PTO.
3. Remove crankcase cover or sump, Fig. 10.
Tap on side of cover or sump.

Inspect Governor Gear

1. Check gear for damaged or worn teeth, Fig. 11.
2. Check thrust washer, governor weights and hinge
pins for wear and burrs.
3. Check governor cup for wear and burrs.
Replace as required.

Remove Governor Shaft

NOTE: On Twin II engines the intake manifold/
carburetor assembly and governor control
must be removed before the governor
shaft can be removed.

Plain Bearing Engines

1. Rotate crankshaft until timing mark on gear is at
about 10 o'clock position.
2. Loosen governor lever nut and remove governor
lever, Fig. 12.

Ball Bearing Engines

1. Rotate crankshaft until #2 counterweight is in posi-
tion shown.
2. Loosen governor lever nut and remove governor
lever, Fig. 13.
4
Fig. 10 – Remove Crankcase Cover Or Sump
CUP
GEAR
Fig. 11 – Governor Gear Assembly, Typical
GOVERNOR
LEVER NUT
TIMING MARK AT
10:00 O'CLOCK
POSITION
Fig. 12 – Remove Governor Lever, Plain Bearing
GOVERNOR
LEVER
#2
COUNTER-
WEIGHT
Fig. 13 – Remove Governor Lever,
COUNTER
WEIGHTS
GOVERNOR
LEVER
Ball Bearing Engines
PIN
5