LUBRICATION AND MAINTENANCE
43
FUEL INJECTOR REMOVAL AND
INSTALLATION
The injectors should be cleaned, tested, and ad-
justed every 600 hours. Do not disassemble or ad-
just the injectors yourself. Remove them from the
tractor engine and have them serviced by your
SHIBAURA Tractor Dealer.
WARNING ：
：：
： Fuel oil in the injection
system is under high pressure and can
penetrate the skin.
Unqualified persons should not remove
or attempt to adjust a pump injector,
nozzle or any part of the fuel injection
system.
DO NOT use your hand to check for
leaks. Use a piece of cardboard or
paper to search for leaks.
If any fluid is injected into the skin, ob-
tain medical attention immediately
To remove the injectors :
1. Clean all loose dirt from around the injectors
and lines. Disconnect the leak-off lines from the
injectors. See Figure 63.
2. Disconnect the injection pump lines at the pump
and injectors. Cover the ends of the lines and
the injector inlet and leak-off ports to prevent the
entry of dirt.
3. Remove the injectors.
4. Remove and discard the copper injector sealing
washers from the injector locating bores. If a
spare set of injectors is not immediately avail-
able, cover the bores to prevent the entry of dirt.
After the injectors have been serviced, install them
as follows.
1. Install a new copper sealing washer in each in-
jector locating bore. Install the injectors and
tighten the retaining nut to 34-39 N.m(25 - 29
lbs. ft.).
IMPORTANT：
：：
：Do not overtighten the retaining
nuts. Overtightening may distort the injector.
2. Install the injector lines. Finger tighten the fit-
tings at the injectors until after bleeding the fuel
system. Tighten the fittings at the injection pump
and injectors to 78-83 N. m.(58 - 61 lbs. ft.).
3. Install the leak-off line, Figure 63. Tighten the
leak-off line nuts to 58-71 N.m ( 43 - 57 lbs. ft.).
4. Bleed the fuel system as covered under “Bleed-
ing the Fuel System”, page 35. Tighten the in-
jector fittings.
Figure 63 - Fuel Injector Leak-off Lines
ENGINE SPEED ADJUSTMENT
The adjustments for idle and maximum no-load
speed settings should be adjusted according to the
following procedures :
Idle Speed
1. Pull the throttle lever rearward to the lowest
engine speed, this makes foot throttle free.
2. Adjust to the designated idling engine speed by
adjusting idling stop bolt and lock it.
Maximum Speed
1. Push the hand throttle lever forward to the
maximum engine speed.
2. 2.To adjust maximum engine speed to 2800 -
2850 rpm, elongate outer cable gradually by
tightening the adjusting screw of throttle wire,
and lock the adjusting screw.
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