BMW HP2 SPORT Rider's Manual page 114

Valve actuation
7
110
The valves are positioned radially
so that the combustion cham-
ber can be compact and con-
toured for smooth gas flow. The
inlet ducts are machine-finished
to optimise the inlet flow. Four
z
valves per cylinder are operated
by two overhead camshafts with
angle-ground cams and short
cam followers. Removal of the
oil sinks with the cam followers
is a service-friendly operation for
vale-clearance adjustment. The
carbon cylinder-head covers are
fitted with replaceable slip pads.