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Kawasaki KZ1300-A1 Quick Reference Manual Page 12

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ADJUSTMENT --ENGINE
SPARK PLUGS
Neglecting the spark plug eventually leads to difficult
starting and poor performance. If the spark plug is used
for a long period, the electrodes gradually burn away
and carbon builds up
inside.
See the Periodic Mainte-
nance Chart
(Pg.
10), for spark plug inspection, cleaning
and resetting of the electrode
gap.
eRemove the spark plugs using a spark plug wrench.
e(lean the spark plug preferably
in
a sand-blasting
device, and then clean off any abrasive particles. The
plug may also be cleaned using a high flash-point
solvent and a wire brush or other suitable tool. If the
spark
plug
electrodes
are corroded or damaged, or
if
the
insulator
is cracked, replace the plug.
Use the
standard plug or its equivalent.
eMeasure the gap with a wire-type thickness gauge. If
the gap
is
incorrect, carefully bend the outer
electrode
with a suitable tool to obtain the correct gap.
Table B1
Spark Plug
Plug
NGK BP6ES or NO W20EP-U
©
®
NGK BPR6ES or NO W20EPR-U
Gap
0.7-0.8 mm
Tightening
2.8 kg-m (20
ft-Ibs)
Torque
©
:
Canadian Model
®
:
EuropeciO Model
Spark Plug Gap
eTighten the spark plugs in the cylinder head to 2.8
kg-m (20 ft-Ibs) of
torque_
VALVE CLEARANCE
Valve and valve seat wear decreases
valve
clearance,
upsetting valve timing. If valve clearance is not adjust-
ed, the wear will eventually cause the
valves
to
remain
partly open, which lowers performance, burns the
valves
and valve seats, and
may cause
serious
engine
damage.
Valve clearance for each
valve
should be checked and
adjusted
in accordance with the Periodic Maintenance
Chart (Pg_ 10) and any time that clearance may have
been affected by disassembly.
Be careful to
adjust
within the
specified
cleara!lce.
Adjusting to a larger value will disturb
valve timing
and cause
engine noise.
NOTE: Valve clearance must be checked when the
engine
is
cold (room or atmospheric temperature)
.
To check the valve clearance:
eRemove the fuel tank (Pg. 46).
eOisconnec t the battery ground
( )
lead.
eRemove the
spark
plugs.
eRemove the vacuum switch valve (US model)
(Pg_
48)_
eRemove the two lower ignition coils
(Pg_
49)_
eRemove the cylinder head cover
(Pg.
65).
eRemove the alternator cover (Pg. 85). The cover need
not be removed
completely
from the crankcase
,
so
the
alternator
leads
may be left
connected.
eUsing
a
14 mm wrench on the alternator rotor bol t,
turn the crankshaft clockwise
so
that the
"T"
mark on
the
rotor
is
aligned
with the
crankcase
mating surface
on the front side of the crankshaft.
A_ NT" Mark
eCheck that the timing mark on the exhaust camshaft
sprOCKet is aligned with the cylinder head cover mating
surface
on the
front side
of the exhaust camshaft. If
it
is not
,
turn
the
crankshaft
another turn until the
"T"
mark is aligned with the
crankcase
mating
surface
again
.
NOTE: At this position, the
#1
(extreme left) piston
is at top dead center (TOC) at the
end
of its compre)sion
stroke.
eAt this
crankshdft
(0°) position, measure the clear-
ance
between the
cam
and
the
shim
of
the =1 inlet and
ex
haust
valves.
See Table
B2.
A. Thickness Gauge
eNex t turn the crankshaft
1/
3 turn
(120°)
clockwise and
align the
"1"
mark on the rolor with the crankcase
mating
surface.
12

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