English Customer Service: 1-844-FIRMAN1Page
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ENGINE MAINTENANCE
To prevent accidental starting, remove and ground
spark plug wire before performing any service.
Change Engine Oil
Change engine oil every 100 hours.
(for a new engine, change oil after 25 hours.) If you
are using your generator under extremely dirty or
dusty conditions, or in extremely hot weather,
change the oil more often.
Avoid prolonged or repeated skin contact with used
motor oil.
• Used motor oil has been shown to cause skin
cancer in certain laboratory animals.
• Thoroughly wash exposed areas with soap and
water.
(a) Loosen the cover screws and remove the
maintenance cover.
(b) Pop up the rubber plug from below yellow
draining bolt.
(c) Remove yellow drain bolt.
(d) Tilt the generator on its side and allow the oil to
drain completely.
(e) Replace yellow drain bolt.
(f) Fill the engine with oil until it reaches the HIGH
(H) level on the oil filler cap. DO NOT OVERFILL.
• Use fresh and high quality lubricating oil to
the specified quantity.
If contaminated or deteriorated oil is used or
the quantity of the engine oil is not sufficient,
the engine damage will result and its life will be
greatly shortened.
Air Filter Maintenance
Maintaining an air filter in proper condition is very
important. Dirt induced through improperly
installed, improperly serviced, or inadequate
elements damages and wears out engines. Always
keep the element clean.
(a) Remove the air cleaner cover and locate the
air filter plastic cover.
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