Briggs & Stratton PowerBuilt Snow 120000 Series Operating & Maintenance Instructions page 12

Air Cooling System
Grass or chaff may clog engine's air cooling system,
especially after prolonged service. Internal cooling fins
and surfaces may require cleaning to prevent
overheating and engine damage.
REMOVE HOUSING
REWIND STARTER
HOUSING
12
1. Remove 3 screws from cover and lift.
2. Clean areas shown.
3. Reinstall housing ensuring all hoses, and wires
are in place.
Cover / Housing
Air Cooling System
COVER
SCREWS
CLEAN