III. ENGINE REPAIR
50
Grind in the valves. The rotocap and the
conical shaped spring belong to the
exhaust valve. The two thin steel
washers must be under the cylindrical
spring of the inlet valve. Fit new sealing
cap onto the inlet valve guide. Before
fitting the rotocap check for proper
function: Spin the cap, if rattling sound
or hard movement replace it.
(Figure 22)
Fit cylinder head gasket and slide
cylinder head down onto the cylinder. Fit
spring washers and cylinder head nuts.
On the shorter stud bolt - intake side -fit
the tote bracket and the cylinder head
nut without spring washer.
(Figure 23)
Attention: Models 15B/D do not have
any cylinder head gaskets.
At this stage do not torque down the
cylinder head nuts as the rocker
arms and push rods still have to be
fitted at a later stage.
12. Gear cover
To install the gear cover, first bring the
piston to TDC (Top dead center) by
aligning the flywheel timing mark with
the TDC mark stamped on the
crankcase at the 3 o`clock position.
(Figure 24)
Summary of Contents for 15D Series
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