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IMPORTANT: 

Your new tool has been engineered and manufactured to WEN’s highest standards for dependability, 

ease of operation, and operator safety. When properly cared for, this product will supply you years of rugged, 
trouble-free performance. Pay close attention to the rules for safe operation, warnings, and cautions. If you use 
your tool properly and for its intended purpose, you will enjoy years of safe, reliable service.

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WENPRODUCTS.COM

4000W INVERTER

GENERATOR

Instruction Manual

MODEL 56400iX

EPA CERTIFIED

CARB COMPLIANT 

Summary of Contents for 56400iX

Page 1: ...safe operation warnings and cautions If you use your tool properly and for its intended purpose you will enjoy years of safe reliable service NEED HELP CONTACT US Have product questions Need technica...

Page 2: ...or 19 Using Your Generator 21 Stopping Your Generator 28 Maintenance 29 Transportation Storage 37 Troubleshooting Guide 38 Wire Diagram 39 Exploded View Parts List 40 Warranty Statement 51 OPERATION M...

Page 3: ...th 18 in 456 mm Height 20 1 in 511 mm Product Net Weight 99 2 lbs 45 kg Engine Type 4 Stroke OHV Single Cylinder with Forced Air Cooling System Engine Displacement 212cc Engine Speed 3600 RPM Fuel Tan...

Page 4: ...__ Purchased From _______________________________________________ Serial Number ________________________________________________ TO MAXIMIZE THE LIFESPAN OF YOUR GENERATOR We recommend running your ge...

Page 5: ...ols is to attract your attention to possible dangers The safety symbols and their explanations deserve your careful attention and understanding The safety warnings do not by themselves eliminate any d...

Page 6: ...ctly 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 r...

Page 7: ...ld only be performed by a qualified technician Do not use receptacles or cords that show signs of damage such as broken or cracked insulation 4 Use a ground fault circuit interrupter GFCI in highly co...

Page 8: ...e generator that be come hot during use 8 Turn off all connected electrical devices before stop ping the generator 9 Always turn generator off before refueling Allow generator to cool for at least 2 m...

Page 9: ...ll contents and accessories Do not discard the packaging until everything is removed Check the packing list below to make sure you have all of the parts and accessories If any part is missing or broke...

Page 10: ...our Generator The components will be referred to later in the manual for assembly and operation instructions GENERATOR Fuel Cap Carrying Handle Control Panel Battery Access Cover Transportation Handle...

Page 11: ...Parallel Connection Port Connect two WEN inverter generators through a parallel connection kit for a higher output 6 DC 12V Cigarette Lighter Style Receptacle 7 DC 5V USB Outlet 8 Grounding Nut Groun...

Page 12: ...tor To remove the mounting plates 1 With the help of another person place generator on an elevated platform such as table or workbench Make sure the generator is stable Do not to tilt the generator as...

Page 13: ...e of oil that matches the expected operating temperature F C 20 0 20 32 40 60 80 100 40 20 0 20 10 10 30 30 To add oil follow these steps 1 Place the generator on a level surface Make sure the en gine...

Page 14: ...the oil coming halfway up the oil fill threads 4 Wipe clean any oil leaks and firmly tighten the dipstick Reinstall the oil access cover OIL LEVEL SHUTDOWN To protect the unit from damage the generato...

Page 15: ...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 2 2 US gallons 8 3 L Do not mix oil with gasoline...

Page 16: ...rs to be undamaged The battery cells inside the battery may have suffered serious damage In such instances please read the waste disposal information on p 34 for proper battery disposal 5 DO NOT CRUSH...

Page 17: ...Double check to confirm that the connection is secure 4 Return the battery into position and use the rubber belt to fasten the battery 5 Reinstall and secure the battery access cover IMPORTANT If you...

Page 18: ...ence a decrease in performance even with the proper altitude kit Operating this generator without said kit may increase the engine s emissions and decrease both fuel economy and performance You can or...

Page 19: ...use a generator correctly CO may leak into the home ALWAYS use a battery powered or battery backup CO alarm in the home If you start to feel sick dizzy or weak after the generator has been running mo...

Page 20: ...e the starter NOTE The lithium ion battery is shipped partially charged in order to maximize its service life and may not have enough charge to start the engine during the first use of the generator I...

Page 21: ...ion Find the wattage information of each device you plan to connect The information should be listed on the device or in its instruction manual or you may refer to page 22 Table 2 The wattage can be c...

Page 22: ...HP 1500 3000 Window Air Conditioner 1200 1800 Saw Miter 1200 1200 Microwave 1000 0 Well Water Pump 1000 1000 Sump Pump 800 1200 Refrigerator Freezer 800 1200 Furnace Blower 800 1300 Computer 800 0 El...

Page 23: ...ces are turned off Start plugging in each electric device from the highest wattage to the lowest Check the power indicator light green to ensure the generator is producing power 3 Do not overload the...

Page 24: ...6000 150 100 60 NR NR 30 3600 7200 125 65 NR NR NR 40 4800 9600 90 NR NR NR NR WARNING Generator should only be connected to electrical devices either directly or with an extension cord NEVER CONNECT...

Page 25: ...ndicator red on the control panel will light up Follow the instructions below when an overload occurs When you re close to overloading the generator the overload light will start to flash Reduce the l...

Page 26: ...ir immediately and seek the attention of a qualified medical professional Follow all other directions in this manual regarding the connection and disconnection of electrical devices when starting or s...

Page 27: ...0 0 Meter will show 0 5 just before it is shut off but it has not been run for 2 hours at a time yet 3 1 hr 1 Yes to 0 0 Meter will show 1 0 just before it is shut off but it has not been run for 2 h...

Page 28: ...omatically This feature helps to prevent the carburetor from being clogged by stale fuel extending your generator s lifespan OPTION 2 MANUAL SHUTOFF In case you are in a hurry and do not want to wait...

Page 29: ...ance Schedule Clean change more often under dusty conditions or operating under heavy load IMPORTANT GENERATOR MAINTENANCE TIPS Drain your carburetor after each use and before storage to prevent it fr...

Page 30: ...shut down to protect it from running without oil To check the oil level and add oil 1 Make sure the generator is on a level surface Do not tilt the generator as oil will flow into engine areas and cau...

Page 31: ...unscrew the top two screws Fig 20 1 and remove the service panel on the opposite side of the recoil starter 4 The carburetor can be accessed between the engine and the air filter Fig 20 Locate the tra...

Page 32: ...ters can be ordered from wenproducts com by searching part no 56380i 1001B 1 4 Reinstall the air cleaner element air cleaner cover and service panel WARNING Running the engine with a dirty damaged or...

Page 33: ...the plug 4 Visually inspect the spark plug If it is cracked or chipped or if the electrodes are worn or burned discard it and replace with a new spark plug We recommend replacing with a NGK BPR6ES To...

Page 34: ...o the unlocked position and remove the cover from the side panel 3 Prepare an approved oil storage container and place it be low the oil drainage valve Fig 27 to catch oil as it drains 4 Open the oil...

Page 35: ...o the RUN position Fig 29 This will open up the fuel valve 5 Open up the carburetor drain screw Fig 28 with a flat head screwdriver Fuel will start draining from the carburetor and fuel tank through t...

Page 36: ...nd covered with an insulator such as electrical tape and then connecting the battery This will allow the inside of the generator to warm up and will greatly reduce the chance of damage to the battery...

Page 37: ...oper power output PRODUCT DISPOSAL Do not dispose of a used generator or parts with your household waste This product contains electrical or elec tronic components that should be recycled Please take...

Page 38: ...eck the total wattage of the devices and reduce the load if it exceeds the capacity of the generator Bad connecting cords wires Check power cords extension cords Do not use if any cord is damaged Repl...

Page 39: ...WIRE DIAGRAM 39...

Page 40: ...1 1 10 56310i 0210 Nut 1 1 11 56380i 0111 Bearing 1 1 12 56310i 0306 Oil Seal 1 1 13 56380i 0113 Starter Motor 1 1 14 56380i 0114 Bolt 2 1 15 56380i 0115 Protective Cover 1 1 16 56380i 0116 Ignition C...

Page 41: ...Tube 1 3 7 56380i 0307 Cylinder Head Subassembly 1 3 8 56310i 0109 Bolt 2 No Part No Description Qty 3 9 56380i 0309 Bolt 2 3 10 56380i 0310 Cylinder Head Gasket 1 3 11 56380i 0311 Pin 2 3 12 56380i 0...

Page 42: ...0i 0605 Valve Spring Seat 2 6 6 56310i 0606 Valve Lock Clamp 4 6 7 56310i 0607 Valve Tappet 2 6 8 56380i 0608 Valve Lifter Assembly 2 6 9 56380i 0609 Valve Rocker Arm 2 6 10 56380i 0610 Rocker Shaft 2...

Page 43: ...or Assembly No Part No Description Qty 9 1 56310i 1101 Flywheel Nut 1 9 2 56380i 0902 Impeller 1 9 3 56310i 1103 Bolt 3 9 4 56380i 0904 Rotor 1 9 5 56400iX 0905 Stator 1 9 6 56380i 0906 Flat Washer 3...

Page 44: ...Support 1 11 3 56380i 1103 Impeller 1 11 4 56380i 1105 Muffler Assembly 1 11 5 56380i 1106 Muffler Gasket 1 11 6 56310i 1010 Nut 2 11 7 56380i 1108 Muffler Bracket 1 11 8 56310i 1009 Bolt 5 11 9 56310...

Page 45: ...Outlet 1 12 4 56310i 1701 Bolt 4 12 5 56380i 1205 Flat Washer 4 12 6 56380i 1206 Bushing 4 12 7 56380i 1207 Fuel Tank Damper 4 12 8 56380i 1208 Fuel Tank Cap 1 12 9 56380i 1209 Fuel Strainer 1 12 10 5...

Page 46: ...Tank Mounting Bracket 1 13 15 56380i 1315 Carbon Tank 1 13 16 56380i 1316 Carbon Tank Hose Primary 1 No Part No Description Qty 13 17 56380i 1317B Air Filter Hose 1 13 18 56380i 1318 Carbon Tank Hose...

Page 47: ...380i 1418 Battery Cover 1 14 19 56380i 1419 Multimeter 1 No Part No Description Qty 14 20 56380i 1420 Reset Button 1 14 21 56380i 1421 NEMA 5 20R Duplex Outlet 1 14 22 56380i 1422 Switch Subassembly 1...

Page 48: ...ndle Connector Seat 1 15 7 56380i 1507B Right Handle Connector Seat 1 15 8 56200 0517 Bolt 2 No Part No Description Qty 15 9 56380i 1509 Bolt 4 15 10 56310i 0209 Bolt 4 15 11 56310i 1807 Nylon Nut 2 1...

Page 49: ...Rubber Sleeve 4 16 9 56200 0508 Bolt 8 No Part No Description Qty 16 10 56380i 1610 Recoil Starter Guide Subassembly 1 16 11 56200 0612 Screw and Washer 2 16 12 56200 0420 Recoil Starter Handle 1 16...

Page 50: ...0508 Bolt 2 17 7 56310i 1407 Cover Plug 1 17 8 56380i 1708 Nut 4 17 9 56380i 1709 Cushion 1 17 10 56380i 1710 Left Support 1 17 11 56380i 1711 Right Support 1 17 12 56310i 1409 Left Engine Frame Dampe...

Page 51: ...required part numbers and proof of purchase Damaged or defective parts and products may need to be sent to WEN before the replacements can be shipped out Upon the confirmation of a WEN representative...

Page 52: ...V 2021 07 27 THANKS FOR REMEMBERING...

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