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Clean and inspect the spark arrester as follows:
1. To remove muffler heat shield (A) from muffler (B),
remove four screws that connect guard to muffler
bracket (Figure 14).
2. Remove four screws that attach spark arrester screen
(C).
3. 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.
Engine Air Cooling System
Over time debris may accumulate in cylinder cooling fins
and cannot be observed without partial engine disassembly.
For this reason, we recommend you have an authorized
Briggs & Stratton service dealer clean the cooling system
(Figure 15) per recommended intervals (see Maintenance
Schedule in the Maintenance section). Equally important is
to keep top of engine free from debris. Also see Cleaning.
Check Valve Clearance
Regular valve clearance check and adjustment will improve
performance and extend engine life. This procedure cannot
be done without partial engine disassembly and the use of
special tools. For this reason we recommend that you have
an authorized Service Dealer check and adjust valve
clearance at recommended intervals (see Maintenance
Schedule in the Maintenance section).
Carburetor Adjustment
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 an authorized service dealer.
Figure 15 — Air Cooling System
A - Clean These Areas
Figure 14 — Service Spark Arrester
A - Heatshield
B - Muffler
C - Spark Arrester Screen
• DO NOT touch hot surfaces and avoid hot exhaust gases.
• Allow equipment to cool before touching.
• Keep at least 5 ft. (152 cm) clearance on all sides of generator
including overhead.
• Code of Federal Regulation (CFR) Title 36 Parks, Forests, and
Public Property require equipment powered by an internal
combustion engine to have a spark arrester, maintained in
effective working order, complying to USDA Forest service
standard 5100-1C or later revision. In the State of California a
spark arrester is required under section 4442 of the California
Public resources code. Other states may have similar laws.
Running engines produce heat. Temperature of
muffler and nearby areas can reach or exceed
150°F (65°C).
Severe burns can occur on contact.
Exhaust heat/gases can ignite combustibles,
structures or damage fuel tank causing a fire.
WARNING
• DO NOT tamper with governed speed. Generator supplies
correct rated frequency and voltage when running at governed
speed.
• DO NOT modify generator in any way.
Excessively high operating speeds increase risk of injury
and damage to generator.
Excessively low speeds impose a heavy load.
CAUTION
A
C
B
A