Briggs & Stratton 30470 Operator's Manual page 19

InspectMuffler and Spark Arrester
Inspect the muffler for cracks, corrosion, or other damage.
Remove the spark arrester, if equipped, and inspect for
damage or carbon blockage. If replacement parts are
required, make sure to use only original equipment
replacement parts.
A. WARNIN6 Exhaust heat/gases could ignite
combustibles, structures or damagefuel
,_ causing a fire, resulting death,
tank in
serious injury and/or property damage.
Contact with muffler area could cause burns resulting in
serious injury.
• DONOT touchhot partsandAVOIDhotexhaustgases.
• Allow equipment t o coolbeforetouching.
• Keep at least5 feet (152cm) of clearance on all sidesof
generator i ncludingoverhead.
• It is a violationof CaliforniaPublicResource Code,Section
4442,to useor operatethe engine on anyforest-covered,
brush-covered, or grass-covered land unless the exhaust
systemis equipped with a sparkarrester,as definedin Section
4442,maintained in effectiveworkingorder.Otherstatesor
federaljurisdictionsmayhavesimilar laws.
Contact t he originalequipment m anufacturer, retailer,or dealer
to obtaina sparkarresterdesigned for the exhaustsystem
installedon this engine.
• Replacement partsmust bethe sameand installedin the same
positionasthe originalparts.
Clean and inspectthe spark arrester as follows:
1. To remove muffler heat shield (A) from muffler (B),
remove four screws that connect guard to muffler
bracket.
.
3.
Removefour screws that attachspark arrester screen (C).
Inspect screen and obtain a replacement if torn,
perforated or otherwise damaged. DO NOT use a
defective screen. If screen is not damaged, clean it with
commercial solvent.
4. Reattach screen and muffler guard.
Clean CoolingSystem
Over time debris may accumulate in cylinder cooling fins and
cannot be observed without partial engine disassembly. For
this reason, we recommend you have a Briggs & Stratton
authorized dealer clean the cooling system (D) per
recommended intervals (see Maintenance Schedule in the
Maintenancesection). Equally important is to keeptop of
engine free from debris. Also see Cleaning.
CarburetorAdjustment
The carburetor on this engine is low emission. It is equipped
with a non-adjustable idle mixture valve. Top speed has been
set at the factory. If adjustment is required, see a Briggs &
Stratton authorized dealer.
_k. CAUTION Excessively high operating speeds could
result in minor injury and/or generator damage.
Excessively low speeds impose a heavy load.
• DO NOTtamper with governor spring, links or other parts to
increase engine speed. Generator supplies correct rated
frequency and voltage when running at governed speed.
• DO NOTmodify generator in any way.
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