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Kawasaki KZ1300-A1 Quick Reference Manual Page 175

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MAINTENANCE--ENGINE
sure that the spark plug
is the standard
type and that
it
is fully tightened.
Valve, Valve Guide, Valve
Seat
Valve inspection
Visually
inspect the valve face, and
replace the
valve
if
it shows deformation or uneven wear.
Measure
the thickness of the valve
head
using vernier
calipers, and replace the valve if the thickness is
under
the service
limit.
Valve Shape
Do not grind off
~
more than 0.3 mm.
T
---.L
Dimension"
A"
T
A=Minimum after
grinding 4.2 mm
Valve Head Thickness
Table H18
Valve Head Thickness
I
Service Limit
0.7 mm
I
If the
seating
surface of the valve or the end of the
valve
stem is damaged or badly worn, repair the valve
with a
valve
refacer. The angle of tRe
seating surface is
45°
.
The
valve stem
end may be ground
to
permit
addi·
tional valve clearance,
use a
refacing
grinder
to
assure
a
flat,
square
surface.
~ !:'!:i~a,I~~; ~~~:~i~:~ ;~~ !~~~:::~~:
valve spring retainer during operation. allowing the
keepen to loosen. Consequently, the valve may drop
into the engine, causing serious damage.
Valve Stem Grinding
Valve
Refacer
Support
the valve
at
both
ends of
the
straight
stem
portion
,
and set a
dial gauge
against the center
of the
stem
.
One example
is shown in
Fig.
H35.
Turn the valve
and read
the variation in the
dial
gauge.
Replace
the valve if it
is bent
over
the
service
limit.
Valve Stem Bend
=-
Table H19
Valve Stem Bend
Service Limit
0.05
mml
175

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