Firman P08004 Owner's Manual page 21

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When operated above 77°F(25°C) there may be a decrease in power.
Maximum wattage and current are subject to and limited by such factors as fuel BTU content ambient
temperature, altitude, engine condition and etc. Maximum power decreases about 3.5% for each 1,000
feet above sea level; and will also decrease about 1% for each 10°F(6°C) above 60°F(16°C) ambient
temperature.
ADD ENGINE OIL
CAUTION
oil fill cap/dipstick.
3.Wipe dipstick clean.
English
provided oil bottle into oil fill opening to the "H" mark on dipstick. Be careful
do not overfill. Overfilling with oil could cause the engine to not start or hard
4.Using oil funnel, slowly pour contents of
starting.
oil fill
cap/dipstick and fully tighten.
6.Oil level should be checked prior to each use or
at least every 8 hours of operation. Keep oil level
maintained.
CAUTION
will stop when the oil level in the crankcase falls
below the threshold level.
2.Clean area around oil fill and remove yellow We
consider the first 5 hours of run time to be
the break-in period for the unit. During the break
in period stay at or below 50% of the running
The engine is equipped
with a low oil shut-off and
NOTE:
Customer Service: 1-844-FIRMAN1Page 13
5.Replace