272144 Vanguard Twin Cylinder OHV BRIGGS & STRATTON.pdf

2. If necessary, remove the governor gear (1) from
the crankcase cover with two screwdrivers (3).
Remove the washer from under the governor
gear.
Fig. 13
9. Perform governor adjustments, see Troubleshooting,
Section 2.
WARNING
Static adjustment of the governor
must be completed BEFORE starting
or running engine!
• Failure to make static governor adjustments
first could result in engine overspeeding and
consequential engine damage, property
damage or personal injury.
Inspect Governor Gear
Fig. 15
1. Check the governor gear assembly for worn
weights or weight pins. Inspect the governor
cup, washer and gear for wear or damage.
2. Inspect the governor gear shaft (1) for wear or
damage, Fig. 16.
Models 540000, 610000
Disassemble Governor Gear
The governor gear (1) is located on the inside of the
crankcase cover, Fig. 14.
Drain oil and remove engine from equipment.
Remove spark plugs. Remove crankcase cover.
Fig. 16
Replace the crankcase cover if the shaft is worn,
bent or otherwise damaged.
Install Governor Gear
1. Install the washer and governor gear to the
governor gear shaft.
2. Secure the governor gear assembly to the shaft
with the retaining clip.
3. Place governor gear cup into the governor gear
weights and push down into position on the
governor gear shaft.
Remove Governor Crank
Fig. 14
1. The governor gear should spin freely and slide
on the governor gear shaft. The flyweights (2),
Fig. 15, must move freely on the hinge pins.
1. Inspect the governor crank (2) for wear or
damage, Fig. 17.
NOTE: Camshaft gear and cylinder block are cut
away for clarity.
117