Facts About Generators
GeneratorsDirectoryCompareRepairEnginesControllersPartsManufacturersGuides
Search models or part #
Home›Repair guides›Field Adjustment - Carburetor

Cummins — Field Adjustment - Carburetor

For these Cummins models: G-1710, G-495, G-743, G-855, GTA-1710, GTA-743, GTA-855.

Browse Cummins generators & specs →

Procedure

  1. 1. Close the main gas supply valve.
  2. 2. Set the carburetor power mixture adjustment valve at
  3. 3. Close the idle adjustment; then open two and one-half ©
  4. 4. Remove the pipe plug and attach a pressure gauge
  5. 5. Remove the pipe plug from teh intake manifold and -
  6. 6. Open the main line gas supply valve.
  7. 7. Adjust the line gas pressure to the “Thermac” pressure
  8. 8. Start the engine, using normal starting procedure.
  9. 9. After the engine coolant aitains operating temperature
  10. 10. Shut down the engine.
  11. 11. Close the main gas supply valve.
  12. 12. Remove the two water manometers and the mercury

Source: manual:CUMMINS G495 G743 G855 GTA743A GTA743B GTA855 G1710 GTA1710 Operation and Maintenance Manual (2).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.