Betamotor EVO 4t, Workshop Manual, Page: 69 / 80

63
ASSEMBLY
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4.16.2 fitting
Insert the oil plug (1) using a pin punch.
Fit the lower spring caps (2) and then the valve gui-
de oilseals (3). Take care not to confuse the lower
spring caps with the upper ones. The upper caps
differ from the lower ones in that they have a more
marked bevel on the opposite side to the spring.
N.B. Change the valve guide oilseals each time an
inspection of the head is carried out and the valves
are removed.
Fit the outer springs (4) and the inner springs (5),
and then the spring caps.
N.B springs have a coloured paintmark. Fit them with
this mark facing upwards.
After you have greased the valves and fitted them
into their guides (inlet 7, exhaust 8), secure them
with the split collets (9) using the special tool (A).
The operation must be carried out individually for
each valve.
N.B. Used valves must always be refitted in the same
guide as they were in before dismantling.
A
9