MV Agusta 2008 F4 312RR 1078 Workshop Manual page 51

Valve guide check and maintenance
In order to carry out this procedure the following tools
are necessary:
Control tampon
Tampon
valve stem-valve guide play: 0,01÷0,03 mm inlet
coupling limit :
internal guide Ø limit:
Proceed with an accurate visual check of the valve
guide.
In order to determine the coupling wear between guide
and valve stem it is necessary to measure the play
using a control tampon and micrometer.
The control stopper 800095429 (Ø 4,55)
NOTE
must not pass.
In the case of substituting the guide valve
NOTE
it ist is necessary to check and if neces-
sary also substitute the valve.
Removal of the valve guide
After having removed the valves and rubber holdings
as described in the relative paragraph, continue as fol-
lows:
Slowly and evenly heat the cylinder head up to 100°.
Using stopper n° 8000A2385 slide out the valve guide.
Continue with a visual check of the slot to verify its
State.
Cylinder kit
n° 800095429
n° 8000A2385
0,02÷0,04 mm exhaust
0,08 mm inlet
0,1 mm exhaust
4,55 mm
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800095429
8000A2385
C