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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 maintenance and/or failure to correct any problems prior to operating this generator can cause a malfunction which could cause 

death or serious injury. Always follow the inspection and maintenance recommendations and schedules in this manual. 
 

Recommended Maintenance Schedule 

 

 

 

Each Use 

Every Month or 
Each 20 Hrs 

Every 3 Months or 
Each 50 Hrs 

Every 6 Months or 
Each 100 Hrs 

Every Year or 
Each 300 Hrs 

Engine Oil 

Check Level 

 

 

 

 

 Replace  

 

 

 

Air Filter 

Check 

 

 

 

 

 Clean     

 

 

Fuel Filler Cap 

Clean 

 

 

 

 

Spark Plug 

Check/Clean 

 

 

 

 

Fuel Tank 

Verify Gas Level 

 

 

 

 

 Clean      

  

Figure 10 - Recommended maintenance schedule 

 
 

Cleaning the Generator 

 
Always try to use this generator in a cool dry place. If this generator becomes dirty, the exterior can be cleaned with a damp cloth, soft brush, 

vacuum and/or pressurized air. 

 

Never clean this generator with a bucket of water and/or a hose as water can get inside and cause a short circuit or corrosion. 
 

Never use gasoline to clean parts of this generator. 

 

 

Checking the Oil Level 

 

Even though this generator is equipped with an automatic shutoff to protect it from damage due to low oil, it is important to check the oil level in the 
engine crankcase before each use to ensure that there is a sufficient quantity. 

 

To check the oil level: 
1. Verify that this generator is shut down and on a level surface. 

2. Unscrew the oil filler/dipstick cap from the engine as illustrated in Figure 11. 

3. With a dry cloth, wipe the oil off of the dipstick that is located on the inside of the cap. 

4. Insert the dipstick as if replacing the cap and then remove again. There should be oil on the dipstick. If there is no oil on the dipstick, or oil is 

visible only at the very end of the dipstick, add oil until the engine crankcase is filled (see “Changing/Adding Oil” in this section of this manual). 

5. Confirm that the oil filler/dipstick cap is properly in place when finished verifying the oil level. 
 

 

Model AC-G0004 5500 Surge Watts / 5000 Running Watts Electric Start Portable Generator 

20

 

Summary of Contents for AC-G0004

Page 1: ...e and storage of this product Before use read carefully and understand all warnings cautions instructions and labels Failure to do so could result in serious personal injury property damage or even death SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE STOP DO NOT RETURN THIS GENERATOR TO THE RETAILER Questions Problems CONTACT BUFFALO TOOLS If you experience a problem or need to return this generator...

Page 2: ... Electric and Recoil Start Low Oil Shut Off Spark Arrestor UL Listed Electrical Components MTL Approved Full Power Panel Engine Shut Off Switch 120 240V Dual Voltmeter Circuit Breaker Power Outlets 1 12V DC Outlet 2 120V GFCI Outlets 1 120 240V Outlet 1 120V Twist Lock Outlet Digital Hour Meter Complies with CARB and EPA emissions and MTL standards Battery Not Included Model AC G0004 5500 Surge Wa...

Page 3: ...Generator 14 STARTING THE GENERATOR 14 USING THE GENERATOR 16 AC Usage 16 DC Usage 18 STOPPING THE GENERATOR 19 MAINTENANCE CARE 19 Recommended Maintenance Schedule 20 Cleaning the Generator 20 Checking the Oil Level 20 Changing Adding Oil 21 Air Filter Maintenance 22 Fuel Filter Cup Cleaning 22 Spark Plug Maintenance 23 Emptying the Fuel Tank 24 STORAGE TRANSPORT PROCEDURES 24 TROUBLESHOOTING 25 ...

Page 4: ...o 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 si...

Page 5: ...et of clearance on all sides to allow proper ventilation for this generator Chemicals According to the State of California the exhaust from this generator contains chemicals known to cause cancer birth defects or other reproductive harm Flammable Gasoline This generator may emit highly flammable and explosive gasoline vapors which can cause severe burns or even death A nearby open flame can lead t...

Page 6: ... qualified persons to operate this generator High Temperatures This generator produces heat when in operation Temperatures near the exhaust can exceed 150 Degrees 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 touching the engine muffler or other areas tha...

Page 7: ...Model AC G0004 5500 Surge Watts 5000 Running Watts Electric Start Portable Generator 7 ...

Page 8: ...on to the previously described safety information familiarize yourself with all safety and hazard placards on this generator Model AC G0004 5500 Surge Watts 5000 Running Watts Electric Start Portable Generator 8 ...

Page 9: ...sing items call 1 866 460 9437 Monday Friday 8 AM 4 PM Central Time for customer service DO NOT RETURN THIS GENERATOR TO THE RETAILER Item List NEMA L14 30 plug for connecting 240 Volt electrical devices 120 Volt twist lock plug Set of 2 DC connector wires for connecting 12 Volt automotive type batteries Spark plug wrench Model AC G0004 5500 Surge Watts 5000 Running Watts Electric Start Portable G...

Page 10: ... Oil Filler Dipstick Cap Location for checking and filling the engine crankcase oil 9 Recoil Starter Pull cord for starting the engine 10 Fuel Filter Cup Traps dirt and water from the fuel prior to entering the engine 11 Fuel Valve Allows gasoline to pass into the engine 12 Air Filter A removable cleanable sponge like element that limits the amount of dirt pulled into the engine 13 Choke Lever Adj...

Page 11: ... L for this ACDelco Model AC G0004 5500 Surge Watts 5000 Running Watts Electric Start Portable Generator Add the correct quantity of oil before operating this generator for the first time When replenishing oil for subsequent use of this generator always determine that this generator has the correct quantity of oil Model AC G0004 Oil Capacity Qt fluid oz L 1 2 38 1 13 Model AC G0004 Oil Type Recomm...

Page 12: ...higher to the fuel tank Be careful not to fill the fuel tank above the upper limit line The fuel tank capacity for this ACDelco Model AC G0004 5500 Surge Watts 5000 Running Watts Electric Start Portable Generator is 6 5 gallons 24 6 L The fuel gauge located on the top of this generator indicates how much gasoline is currently in the fuel tank NOTE Because gasoline can expand do not fill the fuel t...

Page 13: ...ed with an automatic shutoff to protect it from damage due to low oil it is important to check the oil level in the engine crankcase before each use to ensure that there is sufficient quantity 1 Verify that this generator is on a level surface 2 Unscrew the oil filler dipstick cap from the engine 3 With a dry cloth wipe the oil off of the dipstick that is located on the inside of the cap 4 Fully i...

Page 14: ...his generator by tightening the grounding nut against a grounding wire as previously illustrated in Figure 3 A generally acceptable grounding wire is a No 12 AWG American Wire Gauge stranded copper 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 inform...

Page 15: ...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 step 6 NOTE After repeated attempts to start the engine consult the troubleshooting guide before attempting again If problems persist call 1 866 460 9437 Monday Friday 8 AM 4 PM Central Time 8 Once the engine ha...

Page 16: ...ected look up the rated running wattage of each device and add these numbers together to find the total wattage that all of the devices together will draw from the generator If the total wattage of the selected devices exceeds the rated wattage of the generator DO NOT connect all of the devices Select a combination of the electrical devices that will have a total wattage less than or equal to the ...

Page 17: ...itched off prior to plugging it into this generator Connect only electrical devices that are in good working order Faulty devices or power cords present the risk of electrical shock Immediately turn off and disconnect any device that commences to operate abnormally sluggish or abruptly stops Determine if the problem was the device or the rated load capacity of this generator has been exceeded NOTE...

Page 18: ... 300 600 NR 1000 600 375 250 5 600 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 NR NR 40 4800 9600 90 NR NR NR NR NR Not Recommended Figure 9 Maximum Extension Cord Lengths by Power Requirement DC Usage The DC outlet is only for recharging 12 Vo...

Page 19: ...ian STOPPING THE GENERATOR To stop this generator 1 Turn off all connected electrical devices and then unplug them 2 Switch the circuit breaker to the off position 3 Allow this generator to run for several more minutes with no electrical devices connected to help stabilize the temperature of this generator 4 Turn the key to the off position 5 Turn the fuel valve to the off position Allow this gene...

Page 20: ... clean this generator with a bucket of water and or a hose as water can get inside and cause a short circuit or corrosion Never use gasoline to clean parts of this generator Checking the Oil Level Even though this generator is equipped with an automatic shutoff to protect it from damage due to low oil it is important to check the oil level in the engine crankcase before each use to ensure that the...

Page 21: ... the oil to drain from this generator 4 Replace the oil drain plug and tighten with a 10 mm hex wrench NOTE Never dispose of used motor oil in the trash down a drain or on the ground Put oil in a sealed container and contact your local recycling center or auto garage to arrange oil disposal To add oil to the engine crankcase 1 Confirm that this generator is on a level surface 2 Unscrew the oil fil...

Page 22: ...vent 5 Allow the sponge like elements to dry thoroughly 6 Soak the dry sponge like elements in engine oil Squeeze out any excess oil The engine will smoke during initial startup if too much oil is left in the air filter 7 Replace the sponge like elements in the air filter casing the fine element first and replace the cover Figure 14 Removing the Air Filter Casing Fuel Filter Cup Cleaning The fuel ...

Page 23: ... Unscrew the spark plug from this generator by using the included spark plug wrench as illustrated in Figure 16 3 Visually inspect the spark plug If it is cracked and or chipped discard and install a new spark plug A F6TC spark plug such as NGK BPR5ES is recommended 4 Measure the spark plug electrode gap with a gauge The gap should be 0 028 0 031in 0 7 0 8mm See Figure 17 5 If re using the spark p...

Page 24: ... moving it A hot engine and exhaust system can burn you and ignite some materials Disconnect the battery used for the electric start feature of this generator first disconnecting the black cable and then the red cable Empty the fuel tank See Emptying the Fuel Tank in the Maintenance Care section Turn the fuel valve to the off position Disconnect the spark plug See Figure 16 Removing the spark plug...

Page 25: ...nerator is not on level surface Move generator to a level surface to prevent triggering the low oil shutdown Engine will not start Oil is low Add or replace oil Circuit breaker is off Flip circuit breaker to on Reset button s is are off Push reset button s to on Bad connecting wires cables Try a different extension cord Engine runs but there is no electrical output Bad electrical device connected ...

Page 26: ...DC Output Voltage V 12 Circuit Breaker Amperage A 8 3 Dimensions and Weight Dimensions in 26 8 Length 20 1 Width 21 3 Height Gross Weight lbs 192 Net Weight lbs 181 Engine Approvals CARB EPA MTL CTL Engine Model HP 11 Engine Type 4 stroke OHV single cylinder with forced air cooling system Ignition System non contact transistor T C I Starting System Recoil Electric Displacement cm3 389 Max Output h...

Page 27: ...EXPLODED VIEW AND PARTS LIST Model AC G0004 5500 Surge Watts 5000 Running Watts Electric Start Portable Generator 27 ...

Page 28: ...31995 2GF 3 3 Screw 5 mm 12 mm 72 16933 2 8GF 3 1 Grommet 24 31996 2GF 3 9 Screw 5 mm 14 mm 73 16824 2GF 3 4 Fitting brush fuel tank 25 31414 2 Bolt 5 mm 215 mm 74 GB819 85 2 Screw 5 mm 10 mm 26 GB93 87 6 Spring washer 5 mm 75 16931 2 8GF 3 1 Outlet pipe φ9 φ4 5 160 27 31931 4 Bolt 6 mm 175 mm 76 16937 168F 2 Tube clip 28 31134 2 8GF 3 1 Plain washer 77 GB5787 86 4 Flange bolt 6 mm 22 mm 29 32216 ...

Page 29: ...MODEL AC G0004 5500 SURGE WATTS 5000 RUNNING WATTS ELECTRIC START PORTABLE GENERATOR WIRING DIAGRAM Model AC G0004 5500 Surge Watts 5000 Running Watts Electric Start Portable Generator 29 ...

Page 30: ...Model AC G0004 5500 Surge Watts 5000 Running Watts Electric Start Portable Generator 30 NOTES ...

Page 31: ...y implied warranties are limited to one 1 year as 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 This warranty gives you specific legal rights and you may have other rights that vary from state to state REGISTRATION Return this product regist...

Page 32: ...Model AC G0004 5500 Surge Watts 5000 Running Watts Electric Start Portable Generator 32 ...

Page 33: ...le insert bolts 2 8mm x 16mm through axle and generator s frame and tighten 8mm nut 2 onto bolt 2 Slip wheels 2 over the axle on both ends insert cotter pins 2 through axle and spread the pins to hold wheels in place Step 2 1 Install stabilizer feet 2 insert bolts 4 6mm x 12mm through feet and generator frame and tighten 6mm nut 2 onto bolt Step 3 1 Insert each handle unit into the center of the s...

Page 34: ...Model AC G0004 5500 Surge Watts 5000 Running Watts Electric Start Portable Generator 34 ...

Page 35: ...Model AC G0004 5500 Surge Watts 5000 Running Watts Electric Start Portable Generator 35 ...

Page 36: ...Model AC G0004 5500 Surge Watts 5000 Running Watts Electric Start Portable Generator 36 AC5500ES070522 ...

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