Service Air Cleaner
WARNING! Fuel and its vapors are extremely
flammable which could cause burns or fire
resulting in death or serious injury .
• Do not start and run engine with air filter removed .
Your engine will not run properly and may be damaged if
you run it with a dirty air filter . Clean or replace more often
if operating under dusty or dirty conditions .
1 . Loosen screws and remove air cleaner cover .
Filter
Cover
Screws
Carefully remove cartridge from base .
3 . Install clean (or new) air cleaner assembly inside
cover . Dispose of old filter properly .
NOTICE If the filter is excessively dirty, replace with a new
filter . See Common Service Parts.
4 . Assemble air cleaner cover onto base and tighten
screws .
Service Spark Plug
Changing the spark plug will help your engine to start
easier and run better .
1 . Clean area around spark plug .
2 . Remove and inspect spark plug .
3 . Replace spark plug if electrodes are pitted, burned
or porcelain is cracked . Use the recommended
replacement spark plug . See Common Service Parts .
4 . Check electrode gap with wire feeler gauge and reset
spark plug gap to recommended gap if necessary (see
Specifications) .
5 . Install spark plug and tighten firmly .
Base
Inspect Muffler and Spark Arrester
The engine exhaust muffler has a spark arrester screen .
Inspect the muffler for cracks, corrosion, or other damage .
Inspect spark arrester screen for damage or carbon
blockage . Clean if carbon blockage is found using brush
and commercial solvent or replace if damaged .
WARNING! Contact with muffler area could
cause burns resulting in serious injury .
• Allow equipment to cool before servicing .
2 .
• It is a violation of California Public Resource Code,
Section 4442, to use or operate the engine on any forest-
covered, brush-covered, or grass-covered land unless
the exhaust system is equipped with a spark arrester, as
defined in Section 4442, maintained in effective working
order . Other states or federal jurisdictions may have
similar laws, reference Federal Regulation 36 CFR Part
261 .52 .
Replace spark arrester as follows:
1 . Remove four screws that connect heat shield to
muffler .
four
Muffler
Common
Air Cleaner . . . . . . . . . . . . . . . . . . 491588 or 5043
Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . 795615
Engine Oil Bottle . . . . . . . . . . . . . . . . . . . . 100028
Synthetic Oil Bottle . . . . . . . . . . . . . . . . . . 100074
Fuel Stabilizer . . . . . . . . . . . . . 100120 or 100117
Contact an authorized service dealer or
BRIGGSandSTRATTON .com for a full list of parts and
diagrams .
Maintenance
2 .
screws that attach
Spark Arrester Screen
spark arrester
Screws
screen .
3 .
replacement
screen .
Heatshield
4 .
screen and muffler
Screws
guard .
Service Parts
Remove
Obtain a
Reattach
15