Specifications

Servicing and maintenance works Setting work
46 © 2008
6
Check valve clearance, adjust if necessary
z Let the engine cool down for at least 30 minutes
before setting the valve clearance: Lubricating oil
temperature below 80 °C.
z Remove the cylinder head hood.
z Place turning gear over fastening screws of the
belt pulleys.
z Turn the crankcase until reaching valve overlap.
Outlet valve is not yet closed, inlet valve be-
gins to open.
The cylinders to be set can be seen in the
setting schematic.
z Check the valve clearance (1) between the rock-
er arm lugs (2) and the valve (3) with a feeler
gauge (6).
z The feeler gauge (6) must slide in with little re-
sistance.
z For permissible valve clearance, see (  58)
z Adjust valve clearance if necessary:
z Engage hexagon socket head wrench (7) and in-
sert and loosen the lock nut (4).
z Adjust the valve clearance setting screw (5) with
the hexagon socket head wrench (7) so that the
correct valve clerarance (1) is reached after
tightening the lock nut (4).
z Perform the setting procedure on every cylinder.
z Reinstall cylinder head cover, with new gasket.
Valve clearance setting schematic
Valve overlap: Exhaust valve is not yet closed, inlet
valve begins to open.
D 914 L03
D 914 L04
D 914 L05
Valve overlap Turn crankshaft
360°
Settings
1 One turn 1
2 One turn 2
3 One turn 3
Valve overlap Settings
14
23
32
41
Valve overlap Turn crankshaft
360°
Settings
1 One turn 1
2 One turn 2
3 One turn 3
4 One turn 4
5 One turn 5
OBJ_DOKU-16314-001.fm Seite 46 Donnerstag, 24. Juli 2008 11:18 11