Generac GP 3250 Portable Generator 005982-0 - Manual (Page 10)

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2.6 BEFORE STARTING THE GENERATOR
Prior to operating the generator, engine oil and gasoline will need
to be added, as follows:
2.6.1 ADDING ENGINE OIL
All oil should meet minimum American Petroleum Institute (API)
Service Class SJ, SL or better. Use no special additives. Select
the oil's viscosity grade according to the expected operating
temperature (also see chart).
Above 40° F, use SAE 30 •
Below 40° F and down to 10° F, use 10W-30 •
Below 10° F, use synthetic 5W-30 •
1 0 W - 3 0 1 0 W - 3 0
S A E 3 0 S A E 3 0
S y n t h e t i c 5 W - 3 0 S y n t h e t i c 5 W - 3 0
n Any attempt to crank or start the engine
before it has been properly serviced with the
recommended oil may result in an engine
failure.
Place generator on a level surface. •
Clean area around oil fill and remove oil fill cap and dipstick. •
Wipe dipstick clean. •
Slowly fill engine with oil through the oil fill opening until it •
reaches the high mark on the dipstick (Figure 9). Stop filling
occasionally to check oil level. Be careful not to over fill.
Install oil fill cap and finger tighten securely. •
Check engine oil level before starting each time thereafter. •
Figure 9 - Dipstick
2.6.2 ADDING GASOLINE
  Gasoline is highly FLAMMABLE and its
vapors are EXPLOSIVE. Never fill fuel tank
indoors. Never fill fuel tank when engine
is running or hot. Allow engine to cool
entirely before filling fuel tank. Avoid spilling
gasoline on HOT engine. DO NOT light a
cigarette or smoke when filling the fuel tank.
n Do not overfill the fuel tank. Always leave
room for fuel expansion. If the fuel tank is
overfilled, fuel can overflow onto a HOT
engine and cause FIRE or EXPLOSION.
Use regular UNLEADED gasoline with the generator engine. Do •
not use any gasoline with more than 10% added Ethanol, and
never use E85 gasoline. Do not mix oil with gasoline.
Clean area around fuel fill cap, remove cap. •
Slowly add unleaded regular gasoline to fuel tank. Fill to bottom •
of screen filter. Be careful not to overfill (Figure 10).
Install fuel cap and wipe up any spilled gasoline. •
Figure 10 - Fuel Tank
DO NOT Fill Above Lip Fuel
Fuel Tank
IMPORTANT: It is important to prevent gum deposits from forming
in fuel system parts such as the carburetor, fuel hose or tank
during storage. Alcohol-blended fuels (called gasohol, ethanol
or methanol) can attract moisture, which leads to separation and
formation of acids during storage. Acidic gas can damage the fuel
system of an engine while in storage. To avoid engine problems,
the fuel system should be emptied before storage of 30 days or
longer. See the "Storage" section. Never use engine or carburetor
cleaner products in the fuel tank as permanent damage may
occur.
2.7 TO START THE ENGINE
 Never start or stop engine with electrical
devices plugged into the receptacles AND
devices turned on.
Unplug all electrical loads from the unit's receptacles before •
starting the engine.
Make sure the unit is in a level position. •
OPEN • the Fuel Shut-off Valve (Figure 11).
Operation