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Adjustment; Ignition Timing; Camshaft Chain; Throttle Cable - Kawasaki Z250 1981 Service Manual

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SUPPLEMENT-1981 Z250A 217
Adjustment
IGNITION
TIMING
The adjustment
procedures
are
the same as
those
for the 1979 Z250·A 1
with
the
following
except
ion.
Refor to Pgs.
12-16
,
Table N17
Timing Advancing
Engine Speed
(rpm)
Advance Begins
1,400
-
1,600
Full Advance
2,400 -
2,600
CAMSHAFT CHAIN
The camshaft chain
tensio
ner
on this motorcycle is an
automatic
type.
Since the camshaft chain slack
(developed by chain and chain guide wear)
is taken
up
by
this
automatic camshaft chain
tensioner, the
chain
re-
quires no periodic maintenance.
THROTTLE CABLE
There
is
a throttle cable
to
open the butterfly
valves
in the carburetors. If the cable
is
too loose due either to
cable stretch or maladjustment, the excessive play
in the
throttle grip
will cause a delay
in
th
rottle
response,
which will
be
especially
noticeable
at
low rpm.
Also, the
butterfly
valves may
not
open
fully
at
full
throttle.
On
the
other
hand,
if the cable is too tight,
the
throttle will
be
hard to
control, and the idle speed will be erratic.
To check the throttle cable adjustment:
•Check that there
is
2-3 mm
th
rottle
grip play when
lightly turning
the throttle grip back and
forth
.
(N63)
A.
2-3mm
To adjust the throttle
cable:
If the cable
has
improper play, adjust
it
as follows:
•Loosen
the locknut
at the
throttle
grip, and turn the
adjusting
nut
until the proper amount of
throttle
grip
play is obtained.
Tighten
the
locknut.
A. Adjusting Nut
B. Locknut
NOTE: If
the throttle
cable
cannot be adjusted by
using the
cable
adjusting nut at the upper end of the
throttle
cable, use
the
cable adjuster at
the
lower end of
the throttle cable (at the carburetor). Do not forget
to securely tighten the
adjsuter locknut.
A. Adjuster
B.
Locknut
REAR
SHOCK ABSORBERS
The
rear
shock absorbers can be
adjusted to
one of
five
positions to
suit riding conditions. They can
be
left
soft for
average riding
but should be adjusted harder
for
high
speed riding,
riding on rough roads, or riding
with a
passenger.
Shock absorbers adjusted
either
too
soft or
too hard
adversely affect
riding
comfort and
stability.

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