Generac GP 3250 Manuel Du Propriétaire page 10

Operation
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
10W -30 10 W-3 0
Synthe tic 5W-30 Sy nthetic 5W-30

Any attempt to crank or start the engine
before it has been properly serviced with the
recommended oil may result in an engine
failure.
1. Place generator on a level surface (not to exceed 15° in any
direction).
2. Clean area around oil fill and remove oil fill cap and dipstick.
3. Wipe dipstick clean.
4. 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.
5. Install oil fill cap and finger tighten securely.
6. Check engine oil level before starting each time thereafter.
Figure 9 - Dipstick
8
S AE 30 S AE 30
HIGH
LOW
2.6.2 ADDING GASOLINE

Never fill fuel tank indoors. Never fill fuel tank when
engine is running or hot. Avoid spilling gasoline on a hot
engine. Allow engine to cool entirely before filling fuel
tank. DO NOT light a cigarette or smoke when filling the
fuel tank.

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. Wipe
up any spilled fuel immediately.

Never light a cigarette or smoke when filling the fuel
tank. Gasoline is highly FLAMMABLE and its vapors are
EXPLOSIVE. Never permit smoking, open flames, sparks
or heat in the vicinity while handling gasoline.
1. Use regular UNLEADED gasoline with the generator engine. Do
not use any gasoline with more than 10% added ethanol. Do not
use E85 gasoline. Do not mix oil with gasoline.
2. Clean area around fuel fill cap, remove cap.
3. Slowly add unleaded regular gasoline to fuel tank. Be careful
not to overfill (Figure 10).
4. Install fuel cap and wipe up any spilled gasoline.
Figure 10 - Fuel Tank
Fuel Tank
Fuel
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.
1. Unplug all electrical loads from the unit's receptacles before
starting the engine.
2. Make sure the unit is in a level position (not to exceed 15° in
any direction).
3. OPEN the Fuel Shut-off Valve (Figure 11).
DO NOT Fill Above Lip