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ITEM # GEN4000IOF Portable Gas Fuel Inverter Generator  

 

 

 

RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS 

 
What You Need to Know About Safety Instructions 

 

Warning and Important Safety Instructions appearing in this manual are not meant to cover all possible conditions and situations that 
may occur. Common sense, caution and care must be exercised when operating or cleaning tools and equipment. 
 
Always contact your dealer, distributor, service agent or manufacturer about problems or conditions you do not understand.

 

 

 

 

This is the safety alert symbol. It is used to alert you to potential 

personal injury hazards. Obey all safety messages that follow this 

symbol to avoid possible injury or death. 

 

 

 

 

DANGER indicates an imminently hazardous situation 
which, if not avoided, will result in death or serious injury.

 

 

 

WARNING indicates a potentially hazardous situation which, 

if not avoided, could result in death or serious injury.

 

 

 

CAUTION indicates a potentially hazardous situation which, 
if not avoided, may result in minor or moderate injury.

 

 

 

CAUTION used without the safety alert symbol indicates a  

potentially hazardous situation which, if not avoided, may  
result in property damage.

 

 

2 YEAR LIMITED EMISSION-RELATED WARRANTY 

 

 
THIS ENGINE MEETS U.S. EPA EMISSION STANDARDS UNDER 40 CFR 1054.625 .The emission-related limited warranty is valid for two (2) 
years. Keep the purchase receipt and mail in the product registration card for proof of purchase. Buffalo Corp limits emission-related warranty repairs 

to authorized service centers for owners located within 100 miles of an authorized service center. For owners located more than 100 miles from an 
authorized service center, Buffalo Corp will, in its sole discretion, either pay for shipping costs to and from an authorized service center, provide for a 
service technician 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, excluding the states with high-altitude areas identified in 40 CFR part 1068, 
Appendix III. 

 
To exercise this warranty, DO NOT RETURN TO RETAILER. Instead, call Customer Service toll free at 1-866-460-9436 (email address 
[email protected]) and you will be instructed on where to take the engine for warranty service. Take the generator and proof of purchase (your 
receipt) to the repair facility recommended by the Customer Service Representative. The warranty does not extend to generators damaged or 
affected by fuel contamination, accidents, neglect, misuse, unauthorized alterations, use in an application for which the product was not designed 

and any other modifications or abuse.  
 

1 YEAR LIMITED WARRANTY  

(30 Day Limited Warranty for Commercial and Rental Purpose)

 

 

Generators are warranted to be free from defects in materials and workmanship for a period of 1 YEAR from date of original purchase. Buffalo Corp. 
is not liable for any indirect, incidental or consequential damages from the sale or use of this product. Any implied warranties are limited to 1 YEAR 
as stated, or as otherwise stated, in this written limited warranty. Some states do not allow the exclusion or limitation of incidental or consequential 
damages. Some states do not allow limitation on the length of an implied warranty. Buffalo Corp will repair or replace, at its discretion, any part that 
is proven to be defective in materials or workmanship under normal use during the 1 YEAR warranty period. Warranty repairs or replacements will be 
made without charge for parts or labor. Parts replaced during warranty repairs will be considered as part of the original product and will have the 

same warranty period as the original product. This warranty gives you specific legal rights, and you may have other rights that vary state to state. 
 

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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