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ITEM # GEN4000IOF Portable Gas Fuel Inverter Generator  

 

 

 

12 

 

Step 2 - Add Gasoline 

 

 

Gasoline and gasoline fumes are highly flammable and explosive. Handling fuel can result in serious injury or burns.

 

• Do not fill the fuel tank near a heat, sparks or an open flame. Keep gasoline away from appliance pilot lights, barbecues, electric appliances, power 
tools, etc. 
• Do not overfill the fuel tank. Always check for fuel spills and immediately wipe them up. Spilled fuel is a fire hazard and causes environmental 
damage. 
 

To add gasoline: 

To ensure that this generator runs smoothly, use only FRESH, UNLEADED GASOLINE WITH AN OCTANE RATING OF 87 OR HIGHER. Unleaded 
gasoline produces fewer engine and spark plug deposits and extends the life of the exhaust system. 
1. Confirm that this generator is on a level surface. 

2. Unscrew fuel tank cap and set aside. (NOTE: The fuel tank cap may be tight and difficult to unscrew.) 

3. Slowly add fresh, unleaded gasoline (with an octane rating 87 or higher) to the fuel tank. Be careful not to fill the fuel tank above the upper limit 

line. NOTE: Because gasoline can expand, do not fill the fuel tank to the very top. 

4. Securely tighten the fuel tank cap and immediately wipe up any spilled gasoline with a dry cloth. 
 

Fuel Tank Capacity (gallons) 

4.5 

Fuel Type 

Fresh, Unleaded Gasoline Octane Rating 87 or Higher 

 

IMPORTANT: 

• Use only UNLEADED gasoline with an octane rating of 87 or higher. 
• Never use a mixture of oil and gasoline. 
• Never use old and/or contaminated gasoline. 
• Avoid getting dirt and/or water in the fuel tank. 

• Gasoline can age in the fuel tank and make it difficult to start this generator. Never store this generator for extended time with gasoline in the  
fuel tank. 
 

 

Step 3 - Ground the Generator 

 

                               

                                                                

  

Failure to properly ground this generator can result in electrocution.

 

 
Ground this generator by tightening the grounding nut against a grounding wire as illustrated in Figure 3. A No. 12 AWG (American Wire Gauge) 

stranded copper wire is generally an acceptable grounding wire. The other end of this grounding wire should be connected to a copper or brass 
grounding rod that is driven into the earth. 
 
Grounding codes can vary by location. Contact a local electrician for information on grounding regulations for your area. 
 

 

 

 

 

 
 

 

 

 
 

 
 
 

            Figure 3 
The Grounding Terminal 

is located on the front of 
the generator.

 

Summary of Contents for GEN4000IOF

Page 1: ...ccur We reserve the right to change this product at any time without prior notice IF THERE IS ANY QUESTION ABOUT A CONDITION BEING SAFE OR UNSAFE DO NOT OPERATE THIS PRODUCT If you experience a proble...

Page 2: ...22 ounces Fuel Capacity 4 5 gallon Fuel Type Unleaded Gasoline Only 87 rating or higher 3 800 RPM Mobility Kit Not Available If you are using a generator 3 000 feet above sea level it may not functio...

Page 3: ...erify Oil Level 13 Step 2 Verify Gas Level 13 Step 3 Ground The Generator 13 STARTING THE GENERATOR 14 USING THE GENERATOR 15 AC Usage 15 Overload Indicator 16 Economy Control Switch 16 AC Parallel 17...

Page 4: ...ian to come to the owner to make the warranty repair or pay for the repair to be made at a local non authorized service center The provisions of this paragraph apply only for the contiguous states exc...

Page 5: ...Monoxide Gas When in operation the exhaust from this generator contains poisonous carbon monoxide gas Carbon monoxide gas is both odorless and colorless AND may be present even if you do not see or s...

Page 6: ...grees Fahrenheit 65 Degrees Celsius Do not touch hot surfaces Observe all warning placards on this generator denoting hot surfaces Allow this generator to cool for several minutes after use before tou...

Page 7: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 7...

Page 8: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 8 In addition to the previously described safety information familiarize yourself with all safety and hazard placards on this generator...

Page 9: ...enerator 9 PACKAGE CONTENTS The following item is supplied with this Generator Verify that it is included STOP If there are missing items call 1 866 460 9436 Monday Friday 8 AM 4 PM Central Time for c...

Page 10: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 10 GENERATOR COMPONENTS Observe the locations and functions of the various components and controls of this generator...

Page 11: ...IF THE GENERATOR WILL NOT START DOUBLE CHECK THAT THE OIL LEVEL IS COMPLETELY FULL AND ALMOST OVERFLOWING This generator requires engine oil to function Engine oil is a major factor affecting engine p...

Page 12: ...TE Because gasoline can expand do not fill the fuel tank to the very top 4 Securely tighten the fuel tank cap and immediately wipe up any spilled gasoline with a dry cloth Fuel Tank Capacity gallons 4...

Page 13: ...an octane rating of 87 or higher according to Step 2 Add Gasoline of the Using this Generator for the First Time section of this manual Fuel Tank Capacity gallons 4 5 Fuel Type Fresh Unleaded Gasoline...

Page 14: ...s felt Then pull briskly to start the engine Gently return the cord into the generator to avoid damage to the starter or housing Never allow the cord to snap back 7 If the engine fails to start repeat...

Page 15: ...the rated wattage for the generator This generator can run at its surge wattage capacity for only a short time Connect electrical devices requiring a rated running wattage equal to or less than the ra...

Page 16: ...1200 NR 500 300 200 125 7 5 900 1800 NR 350 200 125 100 10 1200 2400 NR 250 150 100 50 15 1800 3600 NR 150 100 65 NR 20 2400 4800 175 125 75 50 NR 25 3000 6000 150 100 60 NR NR 30 3600 7200 125 65 NR...

Page 17: ...black wire on left A and white wire on right B duplicate the same position on the opposite generator 3 Attach both ground connections on both control panels 4 Power up each generator with the Economy...

Page 18: ...dule in Figure 7 Never perform maintenance procedures while this generator is running Allow this generator to cool before commencing any maintenance procedures Keep heat sparks and flame away Improper...

Page 19: ...he oil should be changed after the first 20 hours of operation Subsequently the oil should be changed every 6 months or for every 100 hours of use or when the oil has become contaminated with water an...

Page 20: ...park plug If it is cracked and or chipped discard and install a new spark plug A F7RTC Torch spark plug such as NGK BPR7ES is recommended 4 Measure the spark plug electrode gap with a gauge The gap sh...

Page 21: ...Care section Turn the fuel valve to the off position Disconnect the spark plug Do not obstruct any ventilation openings Do not drop or strike this generator while moving it Store this generator in a c...

Page 22: ...off Pull the fuel line off The carburetor will slide off Turn the carburetor upside down and remove the 10mm bolt on the bottom of the bowl Remove the pin that holds the float on Pull the float up Ins...

Page 23: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 23...

Page 24: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 24 WIRING DIAGRAM...

Page 25: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 25 PARTS DIAGRAM CRANKCASE ASSEMBLY...

Page 26: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 26 CYLINDER HEAD...

Page 27: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 27 CRANKSHAFT PISTON...

Page 28: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 28 CAMSHAFT...

Page 29: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 29 AIR CLEANER...

Page 30: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 30 CARBURETOR...

Page 31: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 31 RECOIL STARTER...

Page 32: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 32 MUFFLER...

Page 33: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 33 GENERATOR...

Page 34: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 34 FUEL TANK...

Page 35: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 35 FRAME...

Page 36: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 36 INVERTER...

Page 37: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 37 CONTROL PANEL...

Page 38: ...ITEM GEN4000IOF Portable Gas Fuel Inverter Generator 38 ELECTRICAL SYSTEM...

Page 39: ...ur failure to ensure the performance of all scheduled maintenance As the power equipment engine owner you should however be aware that Buffalo Corp may deny your warranty coverage if your power equipm...

Page 40: ...e used in the performance of any warranty maintenance or repairs and must be provided without charge to the owner Such use will not reduce the warranty obligations of Buffalo Corp 10 Add on or modifie...

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