Firman W03081, Owner'S Manual, Page: 25 / 108

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Failure to clean the spark arrester will result in
degraded engine performance.
GENERATOR MAINTENANCE
Make certain that the generator is kept clean
and stored properly. Only operate the unit on
a flat, level surface in a clean, dry operating
environment.
DO NOT expose the unit to
extreme conditions, excessive dust, dirt,
moisture or corrosive vapours.
DO NOT use a garden hose to clean the generator.
Water can enter the generator through the cooling
slots and damage the generator windings.
Use a damp cloth to clean exterior surfaces of
the generator.
Use a soft bristle brush to remove dirt and oil.
Use an air compressor (25 PSI) to clear dirt and
debris from the generator.
Inspect all air vents and cooling slots to ensure
that they are clean and unobstructed.
CAUTION
CAUTION
4. Replace the spark arrester if it is damaged.
5. Position the spark arrester in the muffler and
attach spark arrester cover with the screws.
English Customer Service: 1-844-FIRMAN1
3. Carefully remove the carbon deposits from the
spark arrester screen with a wire brush.
Maintenance Valve Clearance
- Intake: 0.08 0.12 mm (0.003 - 0.005 in.)
- Exhaust: 0.08 - 0.12 mm (0.003 - 0.005 in.) -
To be performed by knowledgable/experienced
owner or by authorized service center .