12
ASSEMBLY & ADJUSTMENTS
HIGH ALTITUDE OPERATION ABOVE 3000 FEET
The fuel system on this generator may be affected by opera-
tion at high altitudes. Proper operation can be ensured by
installing an altitude kit at altitudes higher than 3000 feet
above sea level. At elevations above 8000 feet, the engine
may experience a decrease in performance, even with the
proper altitude kit. Operating this generator without the high
altitude kit at elevations above 3000 feet may increase the
engine’s emissions and decrease both fuel economy and
performance.
INSTALLING THE HIGH ALTITUDE KIT
This kit should be installed by a qualified mechanic. Con-
tact customer service at
1-800-232-1195
(M-F 8-5 CST),
or email
for information
about service centers near you. Two high-altitude kits (part
numbers
GN875i-HA36
and
GN875i-HA68
) are included
with your generator.
Gather the parts in the high altitude kit.
1. Flip the engine switch to the STOP position.
2. Turn the fuel valve to the OFF position.
3. Prepare an approved gasoline-storage container to catch
any spilled fuel. Place it near the fuel valve.
4. The carburetor can be accessed from the backside of the
generator between the engine and the air filter. Loosen the
bolt (Fig. 2) on the bottom of the carburetor with a Phillips-
head screwdriver (not included).
CAUTION! The carburetor
bowl may have gas in it which will leak upon removing
the bolt.
5. Remove the bolt, bolt seal, fuel cup, fuel cup seal, and
main jet from the body of the carburetor assembly. Refer to
Fig. 1.
6. Replace the main jet with the replacement jet needed for
your altitude range (3000-6000 ft or 6000-8000 ft).
NOTE:
The fuel cup seal and bolt seal may be damaged during
removal and should be replaced with the new ones from
the kit.
WARNING!
To prevent serious injury from
fire, follow the kit installation procedures in a
well-ventilated area away from ignition sources.
If the engine is hot from use, shut the engine off
and wait for it to cool before proceeding. Do not
smoke near the generator. Warranty will be void
if adjustments are not made for high altitude use.
CAUTION!
UNINSTALL the high altitude kit when
operating at altitudes below 3000 feet.
Carburetor
Carburetor
Assembly
Assembly
Fuel Cup Seal
Fuel Cup Seal
Fuel Cup
Fuel Cup
Main Jet
Main Jet
Bolt Seal
Bolt Seal
Bolt
Bolt
CAUTION!
UNINSTALL the high altitude kit when
operating at altitudes below 3000 feet.
7. Reassemble the fuel cup seal, fuel cup, bolt seal, and bolt. Tighten with a Phillips-head screwdriver to secure.
8. Wipe up any spilled fuel and allow excess to evaporate before starting the engine.
WARNING! To prevent fire, do
not start the engine while the smell of fuel hangs in the air.
Fig. 1
