5.3.3. Cleaning the air cleaner zone
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.
5.3.4. 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.
28
The adjusting screws at the engine
governor and on the injection system
are sealed with lacquer and are not to be
tightened or adjusted.
5.3.5. Cleaning the exhaust mesh inlet
Exhaust system components will
naturally be hot and must not be
touched while the engine is running or until it
has cooled down after being stopped.
29
– Unscrew hex nut and remove the exhaust
mesh insert.
– Remove any deposits in the mesh insert by
means of a wire brush.
– Check the exhaust mesh insert for cracks or
damage and, if necessary replace with a new
one.
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