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Maintenance
Figure 14 – Air Filter
AIR FILTER
3.5 CLEAN SPARK ARRESTOR SCREEN
The engine exhaust muffler has a spark arrestor screen. Inspect
and clean the screen at least once each year (Figure 15). If unit is
used regularly, inspect and clean more often.
If using the generator on any forest-covered, brush-
covered or grass-covered unimproved land, it must
equipped with a spark arrestor. The spark arrestor must
be maintained in good condition by the owner/operator.
Clean and inspect the spark arrestor when the engine is at ambient
temperature as follows:
1. Loosen the clamp and remove the spark arrestor screen from
the muffler.
2. Inspect screen and replace if torn, perforated or otherwise
damaged. DO NOT USE a defective screen. If screen is not
damaged, clean it with commercial solvent.
3. Replace the spark arrestor and secure with the clamp.
Figure 15 – Spark Arrestor Screen
14
COVER
ARRESTOR
SCREEN
CLAMP
SPARK
ARRESTOR
SCREEN
3.6 VALVE CLEARANCE
• Intake — 0.15 ± 0.02mm (cold), (0.006" ± 0.0008" inches)
• Exhaust — 0.20 ± 0.02mm (cold) (0.008" ± 0.0008" inches)
After the first 50 hours of operation, check the valve clearance
in the engine and adjust if necessary.
Important: If feeling uncomfortable about doing this procedure or
the proper tools are not available, please take the generator to the
nearest service center to have the valve clearance adjusted. This is
a very important step to ensure longest life for the engine.
3.7 GENERAL
The generator should be started at least once every 30 days and
be allowed to run at least 30 minutes. If this cannot be done and
the unit must be stored for more than 30 days, use the following
information as a guide to prepare it for storage.
NEVER store engine with fuel in tank indoors or in
enclosed, poorly ventilated areas where fumes may
reach an open flame, spark or pilot light as on a furnace,
water heater, clothes dryer or other gas appliance.
Allow unit to cool entirely before storage.
3.8 LONG TERM STORAGE
It is important to prevent gum deposits from forming in essential
fuel system parts such as the carburetor, fuel hose or tank during
storage. To avoid engine problems, the fuel system should be
emptied before storage of 30 days or longer, as follows:
1. Remove all gasoline from the fuel tank. Use a commercially
available, non-conductive vacuum siphon.
Drain fuel into approved container outdoors, away from
open flame. Be sure engine is cool. Do not smoke in the
vicinity or light a cigarette.
2. Start and run engine until engine stops from lack of fuel.
3. Allow the engine to cool, then drain oil from crankcase. Refill
with recommended grade.
4. Remove spark plug and pour about 1/2 ounce (15 ml) of
engine oil into the cylinder. Cover spark plug hole with rag. Pull
the recoil starter a couple times to lubricate the piston rings
and cylinder bore.
Avoid spray from spark plug hole when cranking engine.
5. Install and tighten spark plug. Do not connect the spark plug
wire.
6. Clean the generator outer surfaces. Check that cooling air
slots and openings on generator are open and unobstructed.
7. Store the unit in a clean, dry place.
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