Honda CB900F 919 (2001) [208/432] Moothl

Honda CB900F 919 (2001) [208/432] Moothl
VALVE/VALVE GUIDE
CYLINDER HEAD
/VAL
VES
Check that the valve moves s
moothly
in the g
uide
.
Inspect each valve for bending,
burning
or
abnorma
l
stem
wear
.
Check
valve
moveme
nt in the guide, measure and
reco rd each valve
stem
0 .0.
SERVICE LI
MIT
S:
IN: 4.465
mm
(0.1758 in)
EX: 4.455
mm
(0.1754 in)
Ream
the
guides
to rem ove
any
carbon
depos
its
before check
ing
clearances.
Insert the
reamer
from
the
combustion
chamber
side
of the head and a
lways
rotate the reamer
clockw
ise.
TOOL:
Valve
guide
reame
r, 4.508
mm
07HMH-ML00
10l
VALVE GUIDE REAMER
Reface the valve
seats whenever
the valve
guides are
replaced
(page 8-17),
Measure and record each
valve
guide 1.0.
SERVICE LIMIT:
IN/EX:
4.540
mm
10
.1787 inl
Subtract each valve
stem
0 .0.
from
the
correspond
-
ing g
uide
I.D. to obtain the stem-ta-gu
ide
clearance.
SERVICE LIMITS:
IN: 0.075
mm
(0.0030 in)
EX: 0.085
mm
(0.0033 in)
If the
stem-ta-guide
clearance is
out
of
standard.
determine
if
a
new
guide
with
standard d
imens
ions
would
br
ing
the clearance
within
tolerance. If so,
replace
any
guides
as necessary and ream to
fit
.
If the
stem
-to-guide clearance is
out
of
standard
with
the
new
guides
, replace the valves and guides.
8-15

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