WEN 56400 4050 Watt - Manual (Page 21)

HIGH ALTITUDE OPERATION ABOVE 3000 FEET
The fuel system on this generator may be influenced by operation at higher 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 decrease performance, even with
the proper main jet. Operating this generator without the proper altitude kit installed may increase
the engine’s emissions and decrease fuel economy and performance. The kit should be installed by
a qualified mechanic.
WARNING! TO prevent serious injury from fire: Follow kit 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.
Notice: Warranty Void if necessary adjustments are not made for high altitude use.
High Altitude Kit Installation Instructions
1. Turn off the engine.
2. Close the fuel valve.
3. Place a bowl under the fuel cup to catch any spilled
fuel.
4. Unthread the bolt holding the fuel cup.
Caution! 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.
6. Replace the main jet with the replacement jet needed for your altitude range.
Note: the Fuel cup seal and bolt seal may be damaged during removal and should be replaced with
the new ones from the kit.
7. Replace the fuel cup seal, fuel cup, bolt seal and bolt. Tighten in place.
8. Wipe up any spilled fuel and allow excess to evaporate before starting engine. To prevent
FIRE, do not start the engine while the smell of fuel hangs in the air.
part # Description Qty
P54173-5 Main Jet 3000-6000 feet 1
P54173-6 Main Jet 6000-8000 feet 1
P54173-7 Bolt Seal 1
P54173-1 Fuel Cup Seal 1
18