MV Agusta 2008 F4 312RR 1078, Workshop Manual

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Cylinder kit
C
Substitution of the valve slot
The following tools are necessary for this procedure:
prick-puncher n° 800095319 for inlet slot
prick-puncher n° 800095318 for exhaust slot
Proceed as follows:
A)Remove the worn slots carefully milling them so as
not to damage the head lodging
B)Check the lodging diameter on the head and choo-
se the oversized valve slot considering that the
assembling interference should be 0,10÷0,15
mm
.
C)Valve slots are furnished with an increased replace-
ment part of 0,03 mm on the external diameter.
D)Slowly and evenly heat the head at a max tempera-
ture of 180°C and cool the new slots with dry ice.
E)Place the slots perfectly in frame into its lodging,
using the special n° 800095319 prick-puncher
(INLET) e n° 800095318 (EXHAUST)
F) Let cool and proceed with the milling of the slots and
grinding the valves referring to the following quoti-
ents:
Ø A 28,60
Ø S 24,6
[E] 1
0
+0,3
0
+0,3
+0,2
-0,3
800095319 800095318