5.3.4. Cleaning cooling air area
The engine must be switched off and
cooled down before cleaning !
– If severely contaminated, clean the cooling fins
on the cylinder and cylinder head, and also the
fan blades in the flywheel. If necessary, con-
tact your local HATZ service station.
5.3.5. Checking screw connections
– Check the tightness of all threaded connec-
tions and take up slack if necessary, provided
that these can be reached during maintenance
work.
Do not tighten the cylinder head bolts.
47
The adjusting screws at the engine
governor and on the injection system
are sealed with lacquer and are not to be tight-
ened or adjusted.
5.3.6. Cleaning the exhaust mesh inlet
Exhaust system components will natu-
rally be hot and must not be touched
while the engine is running or until it has
cooled down after being stopped.
48
– Release hex. nut and remove exhaust mani-
fold.
49
– Remove hex. nut and clip, then pull strainer
insert out.
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