Operation and maintenance manual

QSB4.5 and QSB6.7 To the Owner and Operator
Section i - Introduction Page i-1
To the Owner and Operator
General Information
Preventive maintenance is the easiest and least expensive type of maintenance. Follow the maintenance schedule
recommendations outlined in Maintenance Guidelines (Section 2).
Keep records of regularly scheduled maintenance.
Use the correct fuel, lubricating oil, and coolant in your engine as specified in Maintenance Specifications (Section V).
Blending engine oil with fuel is prohibited for engines with an aftertreatment system.
Cummins Inc. uses the latest technology and the highest quality components to produce its engines. Cummins Inc.
recommends using genuine Cummins new parts and ReCon® exchange parts.
Personnel at Cummins Authorized Repair Locations have been trained to provide expert service and parts support. If
you have a problem that can not be resolved by a Cummins Authorized Repair Location, follow the steps outlined in
the Service Assistance (Section S).
Product coverage, warranty limitations and owner responsibilities are available in Warranty (Section W).
CAUTION
Disconnect both the positive (+) and negative (-) battery cables from the battery before welding on the vehicle.
Attach the welder ground cable no more than 0.61 meters [2 feet] from the part being welded. Do not connect
the ground cable of the welder to the ECM cooling plate or ECM. Welding on the engine or engine mounted
components is not recommended.