Piston and cylinder identification
The cylinder size
1
is impressed in the bottom of the cylinder near the
chain tunnel; 1 is size I, 2 is size II.
The piston size
2
is impressed in the top of the piston; 1 is size I, 2 is
size II.
Assembling the cylinder head
– Slide the valve spring washers
3
over the valve guides and mount
new valve shaft seals
4
.
– Lubricate the valve shafts and insert the valves in their original
position in the valve guides.
NOTE: a washer (14x30x2) is located under the spring retainers for the
exhaust valve springs to increase the spring preload.
– Mount the inner and outer valve springs
5
with the spring retainers
6
and compress the springs using the valve assembling tool
(590.29.019.000 with the attachment 600.29.041.000).
– Grease the valve spring keys
7
and position on the valve shafts.
Relieve the valve springs.
– Tap the valve spring retainers to set the keys.
5-11
3
4
5
1
2
6
7
