Manual for T07573 - Troubleshooting and error codes + PDF Download

Manual for T07573 - Troubleshooting and error codes + PDF Download

Brand: FIRMAN

Category: Portable Generator

Manual Type:

Language:

Uploaded: April 8, 2025, 1:50 p.m.

Warranty Summary

FIRMAN T07573 generator has a three (3) year limited warranty covering defects in material and workmanship.
Download Manual

Starting on Gasoline:

  1. Turn fuel selector to "GAS".
  2. Move choke lever to "START". (For cold engine)
  3. Recoil start: Pull starter cord.
  4. Electric start: Flip engine switch to "START" for a few seconds.
  5. Move choke lever to "RUN" once engine starts.

Starting on LPG/NG:

  1. Turn LPG/NG selector to LPG or NG.
  2. Turn fuel selector to LPG/NG position.
  3. Move choke lever to “START”. (For cold engine)
  4. Recoil start: PULL-TO-PRIME starter cord 1-2 times then PULL-TO-RUN.
  5. Electric start: Flip engine switch to “START” for a few seconds.
  6. Move choke lever to “RUN” once engine starts.

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.
Engine shuts down and yellow CO fault light blinking. 1. CO system fault 1. Contact authorized FIRMAN service facility.

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.
Engine shuts down and yellow CO fault light blinking. 1. CO system fault 1. Contact authorized FIRMAN service facility.