5 -24
(3) Replacing Fuel filter cartridge
1. Stop the engine and set a container under the
fuel.
2. Turn the filter counter-clockwise to remove with
using a filter wrench.
3. Coat the seal of new filter with a little fuel.
4. Assemble new filter.
5. Bleed the air in the fuel system.
(See page 5-27)
6. Replace fuel pre-filter with a new one also,
Main fuel filter
Fuel pre-filter
Close
Open
(4) Adjusting Engine valve
clearance
z Ask your authorized dealer to check the valve
clearance.
Normal : 0.2mm (0.0079 in)
If the gap is large, valves makes a loud tapping
noise and if the gap is too small, it is hard to
compress by which the engine output falls down
or burns a valve.
(5) Checking Nozzle injection pressure
z Contact your authorized dealer for check.
Normal injection pressure :
XR4040 / XR4046 : 14.7 MPa (2132.1 psi)
▶Do not fill the new element with fuel. It may cause damage to the injection system
by the invisible filthy materials.
Warning
Valve clearance
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