– Turn the engine over in the normal direction of
rotation until compression is felt.
43
– Check valve clearances between rocker and
valve stem, using feeler gauge „1“. For the
setting, refer to Chapter 3.1.
– If valve clearance is incorrect, slacken off hex.
nut „2“.
– Turn adjusting screw „3“ with a screwdriver
until feeler gauge „1” can just be pulled
through between the rocker and the valve
stem with slight resistance to its movement
after nut „2“ has been retightened.
– Attach the cover at the cylinder head again and
tighten down uniformly.
– Depending on version mount parts of air duct.
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– In case of the enclosed design, place the lever
for decompression „1“ in horizontal position.
Then, mount the cover of the enclosure in the
order 2...3.
– After a short test run, check the cylinder head
cover for leakage.
5.3.4. Clean the cooling air system
Before cleaning, the engine must be
stopped and allowed to cool down.
Remove parts of air duct.
Dry contamination
– Clean all air guide elements and the complete
cooling air zones on the cylinder head, cylin-
der and flywheel blades without making them
wet. Blow them dry with compressed air.
Persons handling compressed air must
wear protective goggles. Never direct
the jet to animals, persons or yourself !
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