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Summary of Contents for Firman T07571
- Page 1 OPERATOR’S MANUAL TRI-FUEL PORTABLE GENERATOR MODEL NUMBER T07571 Rev Level:00 Record product information to reference when ordering parts or obtaining warranty coverage. NUMERO DE SERIE DATE D’ACHAT: P/N: 375745471 Rev:02...
- Page 2 Register your Firman generator online at www.firmanpowerequipment.com INTRODUCTION Thank you for purchasing a FIRMAN generator. You have selected a high -quality, precision engineered generator set designed and tested to give you years of satisfactory service. This generator is Tri -Fuel and capable of running on gasoline, liquid petroleum gas (LPG), and natural gas (NG).
- Page 3 INTRODUCTION SIGNAL WORDS DANGER WARNING CAUTION NOTICE Indicates a hazard Indicates a hazard Indicates a hazard Indicates information which, if not avoided, considered Important, which, if not avoided, which, if not avoided, could result in minor or but not hazard-related. will result in death or could result in death moderate injury.
- Page 5 Install a listed transfer switch as soon as possible if this generator will be used to restore power to your home. NOTICE If you have questions about intended use, contact FIRMAN customer service. This portable generator is designed to be used only with FIRMAN authorized parts.
- Page 6 INTRODUCTION 1. Only use grounded cords marked for outdoor use rated for your loads. To provide power using extension cords Minimum Gauge, Outdoor Rated Total Amperage Up to 50 FT (15m) Up to 13A Up to 15A Up to 20A Up to 30A Up to 50A 2.
- Page 7 13- Handle 4- Choke Lever(behind air filter box) 14- LPG/NG Hose Connector(Inlet) 5- Air Filter 15- LPG/NG Selector Switch 6- 439cc FIRMAN OHV Engine 16- Hose Holder 17- LPG Hose with Regulator 7- Recoil Starter 8- 10.0" Flat Free Wheel...
- Page 8 FEATURES AND CONTROLS Control Panel NOTICE Total power drawn from all receptacles must not exceed the name plate rating. 1. Main Fuel Selector Switch/Engine Switch – Use to select and turn on gasoline (GAS) or LPG/NG fuel source. The GAS valve is closed when the switch is in the OFF or LPG/NG positions. Engine switch is on when the switch is in GAS or LPG/NG positions.
- Page 9 OPERATION 1.Location DANGER! Engine exhaust contains carbon monoxide, a poisonous gas that could kill you in minutes. You CANNOT smell it, see it, or taste it. Even if you do not smell exhaust fumes, you could still be exposed to carbon monoxide gas. •...
- Page 10 OPERATION Reduce Risk of Fire WARNING! Exhaust heat/gases could ignite combustibles, structures or damage fuel tank causing a fire, resulting in death or serious injury. • Keep portable generator at least 5 ft. (1.5m) from any structure, trees or vegetation over 12 in.
- Page 11 2, Oil and Gasoline / LPG/ NG Add Engine Oil We recommend using FIRMAN SAE 10W-30 API SL oil for best performance. Other high-quality detergent oils (API SL or higher) are acceptable. Do not use special additives. Ambient temperature determines the proper oil viscosity for the engine. Use the chart to select the proper oil for the outdoor temperature range expected.
- Page 12 Make sure the sump is completely full of oil to the upper limit (H). Do not operate engine until oil level issue is corrected. Contact Firman customer service. Add Gasoline WARNING! Fuel and its vapors are extremely flammable which could cause burns or fire resulting in death or serious injury.
- Page 13 High altitude may cause hard starting, increased fuel consumption and sparkplug fouling. To operate at high altitudes FIRMAN can provide a high altitude carburetor main jet. The alternative main jet and installation instructions can be obtained by contacting Customer Support.
- Page 14 OPERATION Connecting LPG/ NG Fuel WARNING! Liquid Petroleum gas (LPG) and Natural Gas (NG) are extremely flammable which could cause burns or fire resulting in death or serious injury. • • Do not place the LPG/NG sources in the path of muffler outlet or near any ignition source. Keep a fire extinguisher near the generator all the time.
- Page 15 Attach the NG hose (not included) to NG connector (inlet) on the control panel and the NG Source. We recommend you use FIRMAN 10ft Quick Connect Hose Kit (Model 1805) for Natural Gas (NG) connection (This item is not included). Make sure the NG source location and hose used allows the portable generator to be located at least 20 ft (6 m) from any occupied spaces.
- Page 16 OPERATION 4. Turn the main fuel selector switch to “GAS” position. NOTICE When the main fuel selector switch is turned to the GAS position, the indicator light will turn RED for up to 4 minutes (before going off). Starting the engine successfully anytime during the 4 minutes will turn the indicator light GREEN.
- Page 17 OPERATION 9. Do not over-choke. As soon as engine starts and warms up, slowly move the choke lever to the RUN position. 10. Allow portable generator to run at no load for a few minutes to stabilize before plugging in any electrical devices.
- Page 18 OPERATION 5. Turn the LPG/NG selector switch to LPG position. 6. Turn the main fuel selector switch to LPG/NG position. NOTICE When the main fuel selector switch is turned to the LPG/NG position, the indicator light will turn RED for up to 4 minutes (before going off). Starting the engine successfully anytime during the 4 minutes will turn the indicator light GREEN.
- Page 19 OPERATION 10. For recoil start only - Move the choke lever to the “RUN” position. 11. For recoil start only - PULL-TO-RUN Pull the starter cord slowly until resistance if felt and pull rapidly to run the portable generator. If the engine fails to start in 1-2 pulls with choke in the RUN position, move choke lever to START position and repeat the PULL-TO-PRIME step (9).
- Page 20 OPERATION Exchanging fuel cylinders to allow the first cylinder to warm up, repeating as necessary. Placing the LPG cylinder at the end of the generator near the handle, where engine fan air flows out from the generator. This air is slightly heated by air flowing over the engine. Do not place the LPG cylinder in the path of the muffler exhaust outlet.
- Page 21 OPERATION 5. Turn the LPG/NG selector switch to NG position. 6. Turn the main fuel selector switch to LPG/NG position. NOTICE When the main fuel selector switch is turned to the LPG/NG position, the indicator light will turn RED for up to 4 minutes (before going off). Starting the engine successfully anytime during the 4 minutes will turn the indicator light GREEN.
- Page 22 OPERATION 10. For recoil start only - Move the choke lever to the “RUN” position. 11. For recoil start only - PULL-TO-RUN Pull the starter cord slowly until resistance if felt and pull rapidly to run the portable generator. If the engine fails to start in 1-2 pulls with choke in the RUN position, move choke lever to START position and repeat the PULL-TO-PRIME step (9).
- Page 23 Push the test button. The reset button will pop out, which should cut power to outlet. Press the reset button until it locks in the depressed position. If the GFCI does not reset as described do not use the receptacles. Call Firman customer service. •...
- Page 24 OPERATION • Do not use generator with electrical cords which are worn, frayed, bare or otherwise damaged. • • Do not operate generator in the rain or wet weather. Do not run indoors to avoid wet conditions. • Do not handle generator or electrical cords while standing in water, while barefoot, or while hands or feet are wet.
- Page 25 OPERATION 2. Turn the main fuel selector switch to OFF (O) position. 3. Fully close the LPG cylinder knob and NG source valve. CLOSE English Customer Service: 1-844-FIRMAN1...
- Page 26 Maintenance - Storage MAINTENANCE SCHEDULE Every Daily(Before Initial 25 Every Every 100 hours ITEM NOTES operation) hours 50 hours 250 hours (or annual) Check condition. Adjust gap √ Spark Plug and clean. Replace if necessary. √ Check oil level. Engine Oil √...
- Page 27 (b) Reinstall the drain plug and fill the engine with oil until it reaches the HIGH(H) level on the oil filler dipstick. DRAIN PLUG NOTICE We recommend using FIRMAN SAE 10W-30 API SL oil for best performance. Other high- quality detergent oils (API SL or higher) are acceptable. See Oil and Gasoline / LPG/ NG English...
- Page 28 Maintenance - Storage Air Filter Maintenance (a) Carefully remove foam air filter element and wash it with liquid detergent and water only. Squeeze dry in a clean cloth. (b) Saturate foam air filter element with clean engine oil and squeeze in a clean cloth to remove excess oil.
- Page 29 (e) Seat spark plug in position and thread by hand to prevent cross threading. (f) Tighten plug with provided wrench and put the spark plug boot back on spark plug. SPARK PLUG: FIRMAN P/N 330723001 or CHAMPION N9YC Maintenance Valve Clearance Intake: 0.13 –...
- Page 30 3. Carefully remove the carbon deposits from the spark arrester screen with a wire brush. 3. Replace the spark arrester if it is damaged. If replacement parts are required, make sure to use only FIRMAN original equipment replacement parts. 4. Position the spark arrester in the muffler and attach with the screws.
- Page 31 Maintenance - Storage Battery Replacement A(M6) 1. Remove the spark plug boot from spark plug. 2. Remove the nut and bolt from the negative(-) post first, then the positive(+) post. 3. Loosen and remove the wing nuts (A) on the battery holding bracket. 4.
- Page 32 Maintenance - Storage Long Term Storage It is important to prevent gum deposits from forming in essential fuel system components such as the carburetor, fuel hoses or tank during storage. Alcohol-blended fuels (called gasohol, ethanol or methanol) attract moisture, which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage.
- Page 33 2. Dirty air cleaner. Engine shuts down when 3. Fill crankcase to proper level or place. 3. Low oil level. running. generator on level surface. For all other issues, contact authorized dealer or Firman customer service. English Customer Service: 1-844-FIRMAN1...
- Page 34 Troubleshooting – Specifications Troubleshooting – Specifications SPECIFICATIONS Model T07571 Starting Watts 9400(GASOLINE)/8450(LPG)/6900(NG) Running Watts* 7500(GASOLINE)/6750(LPG)/5500(NG) RatedAC Voltage 120/240V Rated Fequency 60Hz Phase Single Voltage Regulator PowerFactor Alternator Type Brushed Engine FIRMAN EngineType Single Cylinder, 4-Stroke OHV Air Cooled Displacement 439cc...
- Page 35 PARTS DIAGRAM AND PART LIST T07571 PARTS DIAGRAM English English Customer Service: 1-844-FIRMAN1 Customer Service: 1-844-FIRMAN1...
- Page 36 439cc TRI-FUEL ENGINE PARTS DIAGRAM English Customer Service: 1-844-FIRMAN1...
- Page 37 Parts Diagrams - Parts Lists - Wiring Diagram T07571 Portable Generator Qty. Description Qty. NO. Part Number Description NO. Part Number 357713569 Screw&washer Assy M5×10 FIRMAN 439cc Tri-fuel Engine 380713556 Nut M5 336713578 Rubber Cap B 357713501 357713555 Bolt,bend Hook Flange Bolt M6×8...
- Page 38 Parts Diagrams - Parts Lists - Wiring Diagram FIRMAN 439cc Tri-fuel Engine NO. Part Number Description Qty. NO. Part Number Description Qty. 380723518 Crankcase Comp. 59 380723520 Carburetor 357723501 Bolt,drain 60 357723554 Gskt., Air Cleaner 357723502 Washer,drain Bolt 61 375413003...
- Page 39 Parts Diagrams - Parts Lists - Wiring Diagram English Customer Service: 1-844-FIRMAN1...
- Page 40 FIRMAN GENERATOR will register the warranty upon receipt of your Warranty Registration Card and a copy of your sales receipt from one of FIRMAN’s retail locations as proof of purchase. Please submit your warranty registration and your proof of purchase within ten(10) days of the date of purchase.
- Page 41 Limits of Implied Warranty and Consequential Damage FIRMAN disclaims any obligation to cover any loss of time, use of this product, freight, or any incidental or consequential claim by anyone from using this product. THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANT ABLILITY OR FITNESS FOR A PARTICULAR PURPOSE.
- Page 42 If any such part fails during the period of warranty coverage, the part will be repaired or replaced by FIRMAN at no charge to the owner. Any such part repaired or replaced under the warranty will be warranted for the remaining warranty period.
- Page 43 Service – Warranty (8) Throughout the emissions warranty period defined in Subsection (b)(2), FIRMAN will maintain a supply of warranted parts sufficient to meet the expected demand for such parts. (9) Any replacement part may be used in the performance of any warranty maintenance or repairs and must be provided without charge to the owner.
- Page 44 Service – Warranty All rights reserved. Any reprinting or unauthorized use without the written permission is expressly prohibited. P/N:375745471 Rev:02 English Customer Service: 1-844-FIRMAN1...
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Questions and answers
My Firman TO7571 Generator start, no run. Replace new carburetor new spark plug clean muffler filter., new Fuel. What's wrong.
If your Firman T07571 generator starts but does not continue to run, possible issues include:
1. Low oil level – The generator has a low oil shutdown feature. Fill the crankcase to the proper level and ensure the generator is on a level surface.
2. Dirty air cleaner – Even if other parts are new, a dirty air cleaner can cause shutdown. Clean or replace the air cleaner.
3. Fuel supply issues – Ensure the gasoline tank is full, LPG cylinder is not empty, or natural gas supply is adequate.
If none of these resolve the issue, contact an authorized dealer or Firman customer service.
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Switch will not turn to gas setting
The switch on the Firman T07571 may not turn to the gas setting if there is an issue with the VF and Dual Fuel module or other internal components. Even after replacing these parts, some users still experienced problems, indicating a deeper issue possibly requiring service at an authorized repair shop.
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What will make my generator crank up runs for a couple seconds then cut itself off but can crank it right back up if I choke it
A Firman T07571 generator that runs for a few seconds and then shuts off but restarts when choked may have a clogged or dirty carburetor, a restricted exhaust screen, or a dirty air filter. It could also have old or poor-quality fuel. Choking increases fuel flow, which can temporarily compensate for these issues. Cleaning the carburetor, air filter, and exhaust screen, and replacing old fuel, may resolve the problem.
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Tri fuel switch will not turn off of propane setting.
If the tri-fuel switch on a Firman T07571 generator will not turn off the propane setting, first ensure the switch is fully functional and not physically stuck. Check that the main fuel selector switch is correctly positioned and not damaged. If the issue persists, inspect the switch mechanism and consider contacting customer service for further assistance.
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The generator runs but no power is coming out of the outlets
If the Firman T07571 generator is running but not producing power from the 120V outlet, possible causes include:
1. Tripped Circuit Breaker – The breaker may have tripped, cutting power to the outlets. Check and reset it if necessary.
2. Faulty or Loose Connections – Inspect the wiring and outlet connections for any loose or damaged components.
3. Generator Not Properly Excited – If the generator has lost residual magnetism, it may need to be re-excited using an external power source.
4. Voltage Regulator Issue – A faulty automatic voltage regulator (AVR) can prevent power output.
5. High Altitude Operation – If operating at high altitudes without the correct carburetor jet, performance may be affected, though this primarily impacts engine operation rather than power output.
6. Fuel Type and Mode Selection – If switching between gasoline, propane, or natural gas, ensure the generator is properly set for the selected fuel type.
Checking these factors can help diagnose and resolve the issue.
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What are the dimensions of the T07571