GENERATOR PREPARATION
Lower Limit
Upper Limit
TO CHECK OIL LEVEL
(before every subsequent start):
1. Place the generator on a level surface. Make sure the
engine is OFF before adding or checking oil.
2. Remove and wipe the dipstick with a clean rag.
3. Insert the dipstick into the oil fill without screwing it in.
Remove the dipstick to check the oil mark.
4. If the oil mark covers
less than one half
of the dipstick,
slowly
add oil
until the oil mark reaches the top of the dip-
stick (or when you can see the oil coming halfway up the
oil fill threads). See Fig. 6.
OIL LEVEL SHUTDOWN
To protect the unit from damage, the generator is equipped
with a low-oil-pressure shutoff that will automatically shut
down the engine when the oil level is too low. The oil level
of the engine should be checked before each start to ensure
that the engine crankcase contains sufficient lubricant.
STEP 2 - ADD/CHECK FUEL
TIP:
Your WEN generator is compatible with the
WEN 55201
Magnetic Oil Dipstick (not included),
available for purchase at
wenproducts.com
. The
dipstick’s industrial-strength magnetic tip will
collect metal shavings from your generator’s oil
tank to help preserve the engine and extend your
generator’s lifespan.
WARNING: RISK OF EXPLOSION. HIGHLY FLAMMABLE:
This generator may emit highly flammable and
explosive gasoline vapors, which can cause severe burns or even death, if ignited. A nearby open flame can lead
to explosion even if not directly in contact with gasoline.
• Do not operate near open flame, heat, or any other ignition source. Do not smoke near the generator.
• Always operate on a firm, level surface.
• Always turn generator off before refueling. Allow generator to cool for at least 2 minutes before removing
fuel cap. Loosen cap slowly to relieve pressure in tank.
• Do not overfill fuel tank. Gasoline may expand during operation. Do not fill to the top of the tank. Allow for
expansion. Always check for spilled fuel before operating.
• If fuel spills, move the generator at least 30 feet away from the spill and wipe clean any spilled fuel before
starting the engine.
• Empty fuel tank before storing or transporting the generator.
ONLY
use fresh (within 30 days from purchase), lead-free
gasoline with a
minimum of 87 octane rating
. The genera-
tor performs best with ethanol-free gasoline.
DO NOT
use
gasoline with over 10% ethanol.
The capacity of the fuel tank is
1.85 US gallons (7L)
. Do
not mix oil with gasoline.
Follow the instructions on the next page to add gasoline.
IMPORTANT:
• Avoid getting dirt or water into the fuel tank.
• Keep gasoline away from sparks, open flames,
pilot lights, heat, and other sources of ignition.
• Gasoline can age in the tank and make starting
difficult. Never store the generator for more
than 2 months with fuel in the tank.
• Never use an oil/gasoline mixture.
• Never use old gasoline.
Fig. 6
14
Summary of Contents for GN400i
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