Filter
Top Products
7
ASSEMBLY 4500W Portable Generator PowerBOSS™
9. Attach support leg using two short (M8 x 20mm) cap
screws and two locking hex nuts.Tighten with a 13mm
socket and wrench.
10. Return generator to normal operating position (resting
on wheels and support leg).
BEFORE STARTING THE
ENGINE
Add Engine Oil
• Place generator on a level surface.
• Refer to engine operator’s manual and follow oil
recommendations and instructions.
NOTE: Check oil often during engine break–in. Refer to
engine operator’s manual for recommendations.
NOTE: The alternator assembly rotates on a prelubricated
and sealed ball bearing that requires no additional
lubrication for the life of the bearing.
Add Fuel
All fuel is not the same. If a starting or performance
problem is encountered immediately after new fuel has
been used, try another service station or change brands.
NOTE: This engine is certified to operate on unleaded
gasoline.
Type of Fuel
1. Always use clean, fresh, UNLEADED gasoline with a
minimum of 86 octane. DO NOT mix oil with fuel. DO
NOT modify the engine fuel system or carburetor to
run on alternative fuels.
NOTE: Fuel with up to 10% ethanol (gasohol) or up to
15% MTBE (methyl tertiary butyl ether), is acceptable.
IMPORTANT: Use of any fuel other than those approved
above will void warranty. Some areas require that fuel
pumps be marked if the fuel contains alcohols or ethers. If
you are not sure if your fuel contains alcohol or ethers that
are different than those approved above, then check with
the service station operator.
2. Clean area around fuel fill cap, remove cap.
3. Slowly add unleaded gasoline to fuel tank. Be careful
not to overfill.Allow at least 1.5" of tank space for fuel
expansion, as shown in Figure 2.
4. Install fuel cap and let any spilled fuel evaporate before
starting engine.
To avoid engine performance issues, the fuel system should
be treated with a fuel preserver or emptied before storage
of 30 days or longer.To protect the fuel system from gum
formation, use Briggs & Stratton FRESH START™ fuel
stabilizer plus. If fuel preserver is not used, drain the fuel
tank, start the engine and let it run until the fuel lines and
carburetor are empty. Refer to engine operator’s manual
for more information. Use fresh fuel next season. See
“Storage” on page 18 for additional information.
NEVER use engine or carburetor cleaner products in the
fuel tank as permanent damage may occur.
High-altitude use
Operation at high altitude (over 5,000 feet), may require a
high-altitude carburetor jet kit to improve performance and
decrease fuel consumption. Refer to engine operator’s
manual for more information.
WHEN ADDING FUEL
• Turn generator OFF and let it cool at least 2 minutes before
removing fuel cap. Loosen cap slowly to relieve pressure in tank.
• Fill fuel tank outdoors.
• DO NOT overfill tank.Allow space for fuel expansion.
• Wait for spilled fuel to evaporate before starting engine.
• Keep fuel away from sparks, open flames, pilot lights, heat, and
other ignition sources.
• DO NOT light a cigarette or smoke.
Fuel and its vapors are extremely flammable and
explosive.
Fire or explosion can cause severe burns or
death.
WARNING
Fuel
Tank
1.5” Air Space
Figure 2 - Fuel Expansion
CAUTION
• Refer to engine operator’s manual for oil fill information.
• Damage to equipment resulting from failure to follow this
instruction will void warranty.
Any attempt to crank or start the engine before it has
been properly filled with the recommended oil will result
in equipment failure.