Operation and maintenance manual

QSB4.5 and QSB6.7 Normal Starting Procedure
Section 1 - Operating Instructions Page 1-3
CAUTION
The engine must have adequate oil pressure within 15
seconds after starting. If the WARNING lamp
indicating low oil pressure has not gone out or there
is no oil pressure indicated on a gauge within 15
seconds, shut off the engine immediately to avoid
engine damage. The low oil pressure troubleshooting
procedure is located in Troubleshooting
Symptoms(Section TS).
Idle the engine 3 to 5 minutes before operating with a
load.
After starting a cold engine, increase the engine speed
(rpm) slowly to provide adequate lubrication to the
bearings and to allow the oil pressure to stabilize.
CAUTION
Do not operate engine at low idle for long periods
with engine coolant temperature below the minimum
specification in Maintenance Specifications (Section
V). This can result in the following:
• Fuel Dilution of the lubricating oil
• Carbon build up in the cylinder
• Cylinder head valve sticking
• Reduced performance.