Honda CBR600F4i Series Service Manual page 259

CYLINDER HEAD/VALVES
,qstace me s&a;
1w11
c ~!xi!fgree
r:art~r whenev,:,1
H
valve gu,de
it
r eplaced
8-18
If the contact att!i:I is too h igh on the volvc, the seat
must be lowP.rP.d using a 32' f lal cutler.
If th<! contact area is too low on t he valve, thP. seat
m ust be raised using a 60' interior cuner.
Use a 4!>•degrP.P. c:11tter to remove any roughness or
irregularit ies from the seat .
TOOLS:
Seat cutter, 27.5 mm (IN)
Seal cutter, 24.5 mm (EX)
Cutter holder,
4.0
mm
07780-0010200
07780-0010100
07781-0010500 or
equivalent comme r-
cially
available
Us11 a 32-degree cutter to remove the to p
1/ 4 nf the
P.xisti ng
va lve seat m& Lo;ri.il.
TOOLS:
Flat cuth,r, 27 mm (IN)
Flat cutter, '4 mm (EX)
Cutter holder,
4.0
mm
07780-0013300
07780-0012500
07781--0010500
or
equiva lent commer-
cially available
UsP. a GO-degree cuth:H tu remove the bonom li4 of
the o ld seat.
TOOLS:
Interior cutter, 26 mm (IN)
Interior cutter. 22 mm IEX)
Cutter hokier, 4.0 mm
07780-0014500
07780--0014202
07781-0010500
or
equivalent commer-
cil'llly available
l
CONTACT TOO HIGI I
OLD SEAT
~
~ " ' WIDTH
\
-
\
(
I
?
CONTACT TOO LOW
-
---
---
'' \ ,
'
5 o · LJ
ROUGHNESS
I
OLD SEAT WIDTH
""'
32·
f
",
'
OLD SEAT W IDTH
"' "
✓
oo·