1B20, 1B30, 1B40, 1B50 Maintenance
HATZ
69Manual
Step Activity Figure
2 Remove the screws (2).
(2 screws in 1B20 and 1B30, 3
screws in 1B40 and 1B50).
3 Take off the cover(3) with the
gasket(4).
4 Turn the engine in the sense of
rotation until the rocker arm(1)
has fully opened the outlet
valve. Then check the tappet
clearance at the rocker arm(2)
with a feeler gauge(3). For the
setting, see chapter 4.1 Engine
information and filling quanti-
ties, page 22.
5 Turn the engine in the sense of
rotation until the rocker arm(2)
has fully opened the intake
valve. Now check the tappet
clearance at the rocker
arm(1).
6 If the tappet clearance needs
to corrected:
Release the screw (4) and turn
the hex nut (5) so the feeler
gauge (3) can be pulled
through with a barely percepti-
ble resistance after the screw
(4) is tightened again.
7 Mount the cylinder head cover
with the new gasket and
tighten evenly.
8 Fully assemble the engine.
9 Perform a test run. Check the
cylinder head cover for tight-
ness.
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