Brand: FIRMAN
Category: Portable Generator
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Manual for T07571 - Troubleshooting and error codes + PDF Download
Uploaded: April 8, 2025, 1:52 p.m.
Warranty Summary
FIRMAN T07571 series portable generators have a 3-year limited warranty for mechanical and electrical components for home use.
- Add Engine Oil: Fill with recommended oil to the upper limit.
- Add Gasoline/LPG/NG Fuel: Select fuel type and add fuel as per instructions.
- Starting on Gasoline: Turn fuel selector to GAS, choke to START, and start the engine.
- Starting on LPG/NG: Connect fuel, turn selector to LPG/NG, choke to START, and start the engine.
- Connecting Electrical Loads: Connect loads after the generator stabilizes.
- Stopping: Turn off loads, let generator run no-load for a minute, then turn fuel selector to OFF.
Troubleshooting and error codes
| Problem | Cause | Correction |
|---|---|---|
| Engine is running, but no AC output is available. | 1. Circuit breaker is open. 2. Fault in generator. 3. Poor connection or defective cord set. 4. Connected device is bad. |
1. Reset circuit breaker. 2. Contact authorized service facility. 3. Check and repair. 4. Connect another device that is in good condition. |
| Engine runs good at no-load but "bogs down" when loads are connected. | 1. Short circuit in a connected load. 2. Engine speed is too slow. 3. Shorted generator circuit. 4. Clogged or dirty fuel filter. |
1. Disconnect shorted electrical load. 2. Contact authorized service facility. 3. Contact authorized service facility. 4. Clean or replace fuel filter. |
| Engine will not start; starts and runs rough or shuts down when running. | 1. Fuel selector switch set to OFF (O) position. 2. The indicator light is OFF or flashing red. 3. Low oil level. 4. Dirty air cleaner. 5. Out of gasoline. 6. Stale gasoline. 7. Spark plug wire not connected to spark plug. 8. Bad spark plug. 9. Water in gasoline. 10. Flooded. 11. Excessively rich fuel mixture. 12. Clogged or dirty fuel filter. 13. Starting battery may have insufficient charge. 14. Out of LPG/NG. 15. LPG cylinder knob / NG supply valve is not open. 16. Out of battery power. |
1. Set fuel selector switch to "GAS" or "LPG/NG" position. 2. Must have solid red indicator light to be able to start the engine. 3. Fill crankcase to proper level or place generator on level surface. 4. Clean or replace air cleaner. 5. Fill fuel tank with gasoline. 6. Drain fuel tank and carburetor; fill with fresh gasoline. 7. Connect wire to spark plug. 8. Replace spark plug. 9. Drain gas tank and carburetor; fill with fresh gasoline. 10. Wait 5 minutes and re-crank engine. 11. Contact authorized service facility. 12. Clean or replace fuel filter. 13. Check battery output and charge battery as necessary. 14. Replace LPG cylinder/ check NG supply. 15. Fully open LPG cylinder knob / NG supply valve. 16. Start Engine in "GAS" position. Charge or replace battery. |
| Engine lacks power. | 1. Load is too high. 2. Dirty air filter. 3. Clogged or dirty fuel filter. 4. Clogged spark arrester. |
1. Don't Overload Generator 2. Replace air filter. 3. Clean or replace fuel filter. 4. Clean or replace spark arrester. |
| Engine "hunts" or falters. | 1. Carburetor is running too rich or too lean. 2. Clogged or dirty fuel filter. |
1. Contact authorized service facility. 2. Clean or replace fuel filter. |
| Engine shuts down when running. | 1. Out of gasoline or LPG/NG. 2. Dirty air cleaner. 3. Low oil level. |
1. Fill fuel tank with gasoline or replace LPG cylinder/check NG supply. 2. Clean or replace air cleaner. 3. Fill crankcase to proper level or place. generator on level surface. |
Troubleshooting and error codes
| Problem | Cause | Correction |
|---|---|---|
| Engine is running, but no AC output is available. | 1. Circuit breaker is open. 2. Fault in generator. 3. Poor connection or defective cord set. 4. Connected device is bad. |
1. Reset circuit breaker. 2. Contact authorized service facility. 3. Check and repair. 4. Connect another device that is in good condition. |
| Engine runs good at no-load but "bogs down" when loads are connected. | 1. Short circuit in a connected load. 2. Engine speed is too slow. 3. Shorted generator circuit. 4. Clogged or dirty fuel filter. |
1. Disconnect shorted electrical load. 2. Contact authorized service facility. 3. Contact authorized service facility. 4. Clean or replace fuel filter. |
| Engine will not start; starts and runs rough or shuts down when running. | 1. Fuel selector switch set to OFF (O) position. 2. The indicator light is OFF or flashing red. 3. Low oil level. 4. Dirty air cleaner. 5. Out of gasoline. 6. Stale gasoline. 7. Spark plug wire not connected to spark plug. 8. Bad spark plug. 9. Water in gasoline. 10. Flooded. 11. Excessively rich fuel mixture. 12. Clogged or dirty fuel filter. 13. Starting battery may have insufficient charge. 14. Out of LPG/NG. 15. LPG cylinder knob / NG supply valve is not open. 16. Out of battery power. |
1. Set fuel selector switch to "GAS" or "LPG/NG" position. 2. Must have solid red indicator light to be able to start the engine. 3. Fill crankcase to proper level or place generator on level surface. 4. Clean or replace air cleaner. 5. Fill fuel tank with gasoline. 6. Drain fuel tank and carburetor; fill with fresh gasoline. 7. Connect wire to spark plug. 8. Replace spark plug. 9. Drain gas tank and carburetor; fill with fresh gasoline. 10. Wait 5 minutes and re-crank engine. 11. Contact authorized service facility. 12. Clean or replace fuel filter. 13. Check battery output and charge battery as necessary. 14. Replace LPG cylinder/ check NG supply. 15. Fully open LPG cylinder knob / NG supply valve. 16. Start Engine in "GAS" position. Charge or replace battery. |
| Engine lacks power. | 1. Load is too high. 2. Dirty air filter. 3. Clogged or dirty fuel filter. 4. Clogged spark arrester. |
1. Don't Overload Generator 2. Replace air filter. 3. Clean or replace fuel filter. 4. Clean or replace spark arrester. |
| Engine "hunts" or falters. | 1. Carburetor is running too rich or too lean. 2. Clogged or dirty fuel filter. |
1. Contact authorized service facility. 2. Clean or replace fuel filter. |
| Engine shuts down when running. | 1. Out of gasoline or LPG/NG. 2. Dirty air cleaner. 3. Low oil level. |
1. Fill fuel tank with gasoline or replace LPG cylinder/check NG supply. 2. Clean or replace air cleaner. 3. Fill crankcase to proper level or place. generator on level surface. |