D20x22 Series II Navigator HDD Operation 50-1
Section 50: Operation
Starting Procedure
STARTING THE ENGINE
Step 1: Shut off drilling fluid pump.
Step 2: Set Throttle at IDLE.
Step 3: Ensure Rotation and Thrust/Pullback Handles are in NEUTRAL.
Step 4: Start engine. Shut off engine if oil light does not go out within 15 seconds.
Never run starter motor for more than 30 seconds at a time. Allow starter motor to cool 2 minutes
between attempts.
Step 5: Adjust Throttle to get an even idle speed and allow engine to warm up for 3–5 minutes.
NOTICE: Once engine reaches operating temperature, do not idle engine for more than 5 minutes. Low
combustion chamber temperatures can cause crankcase oil dilution due to fuel not burning completely and
permits formation of gummy deposits on valves, pistons, and piston rings.
On Tier 4 Interim/Stage IIIB engines, low idle causes particulate matter to build up and will increase cycles
between regeneration.
WARNING: Read Operator’s Manual and safety signs before operating machine.
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