Cummins — Any and all final adjustments on the engine should be
For these Cummins models: G-1710, G-495, G-743, G-855, GTA-1710, GTA-743, GTA-855.
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Procedure
- 10. Shut down the engine.
- 11. Close the main gas supply valve.
- 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.