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• First, cut the seating surface of the valve seat with the
45°
seat cutter, cutter holder and bar (special
tools).
Cut only
the
amount necessary to make a good surface;
overcutting will reduce
the
valve
clearance, possibly
making
it
no
longer
adjustable.
Cutting Valve Seat
1. Bar(57001-1128)
2.
5.5 mm
Cutter Holder
(57001-1125)
3. Seat Cutter
First Step
®@
fl'
\
\.!...I
1. Cut Seating Surface with following cutters.
Exhaust:
#2
Seat Cutter (57001-1114)
Inlet
:
f
3 Seat
Cutter
{57001-1115)
Next,
cut the outermost
surface with
the outside cutter
so that
the
valve seating
surface will
have the specified
outside
diameter.
•Then, cut the surface inside the seating surface with
inside
cutter so
that the
seating surface
will
have the
specified width.
SUPPLEMENT-1981 Z250A 231
Second Step
1. Original Seating Surface
2. New Seating Surface
3. Cut this surface to adjust outside
diameter
(§)
of new
seating surface with following
cutters.
Exhaust :
#7 Outside Cutter {57001-1119)
Inlet
:
#9
Outside Cu
tter {57001-1121)
4. Cut
this
surface
to ob tain correct
width
(§;
with
following
cutter.
Inlet and
Exhaust:
#11 Inside
Cutter{57001-1123)
5. Outside
Diameter
6. Seating Area
Width
After cutting,
lap
the
valve
to
properly match
the
valve
and valve seat surfaces.
Start
off with coarse
lapping
compound, and
finish
with fine compound.
•Apply
compound
to
the
valve
seat, and
tap
the valve
lightly
into
place
while rotating
it with
a
lapper, re·
peating
this until a smooth, matched surface
is
ob·
tained.
•When
lapping is
completed, check the
valve installed
height and adjust
if
necessary.
lapping Valve Seat
( N108)
1.
Lapper
2.
Valve
Seat
3. Valve

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   Also See for Kawasaki Z250 1981

This manual is also suitable for:

Kz350 1981

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