To Start The Engine - Generac Power Systems XP4000 Professional Owner's Manual

• Slowly fill engine with oil through the oil fill opening until it
reaches the full mark. Stop filling occasionally to check oil
level. (Engine oil is full when level is up to the threads of the
oil fill plug.)
• Install oil fill cap and finger tighten securely.
• Check engine oil level before starting each time thereafter.
2.7.2 ADDING GASOLINE
DANGER

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.

Do not light a cigarette ro smoke whin filling the
fuel tank. Gasoline is highly FLAMMABLE and
its vapors are EXPLOSIVE.
• Use regular UNLEADED gasoline with the generator engine. Do
not use premium gasoline. Do not mix oil with gasoline.
• Do not use gasoline with more than 10% alcohol such as E85
or Methanol.
• 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 9).
• Install fuel cap and wipe up any spilled gasoline.
Figure 9 - 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.
8
Section 2 – Operation
Portable Generator System
DO NOT Fill Above Lip

2.8 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 10).
Figure 10 - Fuel Shut-off Valve
• Slide engine CHOKE knob outward to
(Figure 11).
Figure 11 - Choke Position
The switch must be in the RUN position.
• To start manually, firmly grasp the recoil handle and pull slowly
until increased resistance is felt. Pull rapidly up and away to
start engine. Then follow the same choke sequence listed
above.
• When the engine starts, slide choke knob to "1/2 Choke"
position until the engine runs smoothly and then fully in to the
"Run" position. If engine falters, slide choke knob back out to
"1/2 Choke" position until the engine runs smoothly and then
to "Run" position.
"Full Choke" position
NOTE: