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::
•Clean
the
points
with
a piece of
clean
paper or cloth
using an oil-free solvent.
.A.
business card soaked
in
trich
loroethylene
can be used to
remove
traces
of
oil.
To repair
light
damage,
use emery cloth
o
r
an oilstone.
If
the
points
are badly
worn down
or
damaged, or
if
the spring
is
weak,
replace the
contact
breaker.
•Lubricate
the
point
cam
felt sparingly
with
suitable
point cam
lubricant.
Do not
overlubricate.
Replace
the felt
if
it is
worn.
•Using
a
14
mm wrench on the
crankshaft, tu
rn
the
engine counterclockwise
until
the contact
breaker
points are at their
widest
opening.
•Measure the contact breaker point
gap
with a
thickness
gauge. The proper gap is 0.3~0.4 mm.
•If the gap
is
incorrect, loosen
the
contact
breaker
base
screws
(2} just
enough to
allow
the base to move. Use
a slot screwdriver on
the
pry points
until
the correct
point gap
is
obtained. Tighten the screws.
A. Pry Points
B. Base Screws
•Turn
the
crankshaft
unti
l
the
other
point
gap
is
opened,
and
adjust
it
if
necessary.
•.A.djust the ignition
t
iming.
Dwell Angle Adjustment
The
most precise means to set the point gap is
to
use
a dwell
angle·
tester instead
of
a thickness gauge.
If
a
dwell angle
tester is
available, adjust
the dwell
angle
(point gap)
in
the following manner.
NOTE:
Th
e
dwell angle is the
angular
range for which
the
contact
breaker
points are
closed. This
allows the
current to
flow
in the ignition coil primary winding.
I
WARNING •
To
prevent an
injury
when measuring
..,. - - - - • - the dwell angle,
make
sure that
no
tools,
clothes, or tester leads touch the spinning camshaft.
•Remove the contact breaker
cover and
gasket.
•Clean
the points
with a piece of
clean
paper
or
cloth
using
an oil-free solvent. A business
card
soaked
in
trichloroeth
ylene
can
be used
to
remove
traces of oil.
To
repai
r light
damage,
use
emery
cloth
or an
oilstone.
If the points are badly worn down or damaged, or if
the
spring
is
weak, replace the con tact breaker.
•Lubricate
the
point
cam
oil felt sparingly
with
suitable
point cam lubricant. Do not overlubricate. Replace
the oil
fe
lt if
it
is
worn.
•Connect
the
dwell angle tester(-}
lead
to chassis ground
and the
(+)
lead
to the
contact breaker spring.
ADJUSTMENT-ENGINE
13
A. Tester Leads
8. Dwell Angle Tester
•If the
dwel
l angle
tester
is calibrated
in
degrees,
turn
the selector knob to
the
lowest cam
lobe
setting.
•Start
the engine and
let
it
idle.
•Note the reading on the
tester. The
dwell angle
speci-
fication is
97 -
112° for
a tester calibrated in
degrees
and
27-3 1% for
one calibrated
in
percentage.
If the
tester
setting
is fo
r
two
cylinders, the
reading must
be
doubled to obtain the
t
rue
dwell
angle.
Table 82
Dwell Angle
Selector
Knob Setting
Dwel
l
Angle
1
Cylinder
97°-1 12°
2
Cylinders
48.5°
~
56°
•If
the dwell angle is
incorrec
t,
loosen
the contact
breaker base
screws (2)
just
enough
to
allow
the base
to
move
.
Use
,l
slot
screwd
river
on
the
pry
poin
ts
unti
l
the
correct
dwell
angle
is
obtained.
Tighten
the
screws.
•Check
the dwell
angle
for the
other
contact
breaker,
and adjust it
if
necessary.
•Stop the engine and disconnect the
tester
leads.
•Adjust
the
ignition timing.
Static
Ignition Timing
Check
and
adjust
the static
igni
tion
timing
for both
cylinders using
each "F"
mark,
first for
the
left
cylinder
and
then the right
cylinder.
•Turn
off
the
ignit
ion
switch
and
engine stop
switch.
•Remove the inlet
valve adjusting
cap
on
the
leftcy
l
inder.
A. Inlet Valve Adjusting Cap

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   Also See for Kawasaki Z250 1981

This manual is also suitable for:

Kz350 1981

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