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Changing the fuel injector nozzle
IMPORTANT! Cover all open fuel injection pipes,
fuel intake openings and the fuel injection nozzle
to keep dirt out
Removing the fuel injector
1. Remove the rocker cover.
2. Remove the clamp from the fuel injection pipe.
3. Remove the fuel injection pipe from the fuel injec-
tor.
4. Remove the injector inlet connector.
5. Remove the injector gland nut to take off the
gland.
6. Pull out the fuel injector using the special tool.
Removing the nozzle
IMPORTANT! The injector nozzle is very
delicate, handle with care.
1. Fasten the fuel injector in a vice with protection
plates.
2. Remove the set screw and the cap nut.
3. Loosen the adjusting screw with a screw driver
until it can be loosened by hand.
Note! This operation is required to release spring
pressure applied to the nozzle. When spring pressu-
re is applied, it is hard to loosen the retaining nut.
3. Remove the retaining nut and remove the nozzle.
Cleaning the nozzle
IMPORTANT! Do not mix up the pairing of needle
valve and body when cleaning more than one at
a time.
1. Dip the nozzle in clean fuel oil and disassemble
the needle valve.
2. Clean the injection holes.
3. After cleaning, carefully insert the needle valve
into the body in clean oil.
Maintenance: Fuel System
51
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