Owners manual

Operating the Engine QSB4.5 and QSB6.7
Page 1-12 Section 1 - Operating Instructions
If an overheating condition starts to occur, reduce the
power output of the engine by releasing the accelerator
pedal or lever or shifting the transmission to a lower gear,
or both, until the temperature returns to the normal
operating range. If the engine temperature does not
return to normal, shut off the engine, and refer to
Troubleshooting Symptoms (Section TS), or contact a
Cummins® Authorized Repair Location.