Priming The Fuel System(Diesel Engine Only) - Doosan D20S-5 Operation & Maintenance Manual

Circuit Breaker
1. Raise the hood and seat assembly. Make sure
the support cylinder securely holds the hood
open.
2. The main circuit breaker is located on the rear
of the support for the hydraulic controls.
NOTE: To reset circuit breakers push in on the
button. The button should stay in if the
breaker is reset. If the button will not stay in,
or comes out shortly after reset, have the
circuits checked.
Priming the Fuel System(Diesel
Engine Only)
4TNV98 Diesel Engine Only
The fuel system needs to be primed under certain
conditions.
Before starting the engine for the first time
After running out of fuel and fuel has been
added to the fuel tank
After fuel system maintenance such as
changing the fuel filter and draining the
water separator, or replacing a fuel system
component.
To prime the fuel system
1. Turn the key to the ON position for 10 to 15
seconds. This will allow the electric fuel pump
to prime the fuel system.
2. NEVER use the starter motor to crank the
engine in order to prime the fuel system. This
may cause the starter motor to overheating and
damage the coils, pinion and ring gear
4TNE98 Diesel Engine Only
The fuel system needs to be primed under certain
conditions.
Before starting the engine for the first time.
After running out of fuel and fuel has been
added to the fuel tank.
After fuel system maintenance such as
changing the fuel filter and draining the
fuel filter / water separator, or replacing a
fuel system component.
To prime the fuel system on engines equipped with
an electric fuel pump:
1. Place an approved container under the air
bleed port.
2. Loosen the air bleed port 2 or 3 turns.
3. Turn the key to the ON position for 10 to 15
seconds or until the fuel coming out of the air
bleed port is free of bubbles.
4. Tighten the air bleed port.
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Maintenance Section