MAINTENANCE AND SERVICING
System Priming
Controlled venting of air is provided at the injection pump through the fuel drain manifold. Small amounts of air
introduced by changing filters or injection pump supply line will be vented automatically, if the fuel filters are
changed in accordance with instructions.
IMPORTANT:
Bleeding the
fuel system is NOT recommended or required. Manual priming will be required if:
•Fuelfilter is replaced.
• Injection pump is replaced.
• High-pressure fuel lines are replaced.
• Engine is run until fuel tank is empty.
Priming Fuel System
To p ri me th
e fuel system, follow these steps:
DANGER
Stop engine and remove key from ignition before leaving operator's seat for any reason. A child or even a
pet could engage an idling machine.
WARNING
The fuel pump high-pressure fuel lines and fuel rail contain extremely high pressure fuel. Never loosen
any fittings. Personal injury and property damage can result.
1. Stop the eng
ine and remove the key.
2. Open the ho
od to lowest position. Refer to 5.4.1
Opening Ho
od (Lower Position), page 202.
3. Turn the priming knob (A) counterclockwise to unlock
the plunger on the primary filter head.
4. Pump approximately 120 times to pressurize the
fuel system.
5. Lock the plunger by turning knob (A) clockwise
until snug.
6. Try starting engine. If engine does NOT start,
repeat priming.
7. Close hood. Refer to 5.4.2 Closing Hood (Lower
Position), page 203.
Figure 5.92: F
uel System
169890
2
44
Revision A
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