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Before Servicing - Kawasaki KX125 1990 Service Manual

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·2
GENERAL INFORMATION
Before
Servicing
Before
starting
to service a
motorcycle,
careful
reading
of
the
applicable
section
is recommended
to
eliminate
unnecessary work. Photographs,
diagrams, notes,
cautions, wamings,
and detailed
des-
criptions have been included wherever
necessary
. Nevertheless,
even a detailed account
has
limitations,
a
certain
amount of basic knowledge
is
also required for successful
work.
Especlaly
not. the
foIowing
:
(1)
Dirt
Before removal and
disassembly.
clean
the
motorcycle.
Any dirt entering
the
engkle or other
parts will
work
as an abrasive and shorten
the
life
of
the
motorcycle.
For
the
same
reason,
before
install-
ing 8
new
part,
clean off any
dust
or metal
filings.
(2)
Tightening Sequence
Generally, when installing a part
with
several
bolts
,
nuts, or
screws,
they should all
be
started
in their
holes and tightened to a snug
fit.
Then tighten them
evenly
in
a cross pattem.
This
is to avoid
distortion
of the part andlor causing
gas
Of
oil
leakage.
Conversely when loosening
the
bolts,
nuts, or
screws,
first
loosen
all
of them by
about a
quarter
of
tum and
then remove
them.
Where there
is
a tightening sequence indication in this Service
Manual,
the
bolts,
nuts,
Of
screws
must be tightened
in
the order and method
indicated.
(31
Torque
The
torque values
given
in this Service Manual
should
always be adahered
to.
Either too
little
or too
much
torque may lead to serious
damage.
Use a
good quality, reliable
torque
wrench
.
(4)
Force
Common sense should
dictate how much force
is necessary
in
assembly and
disassem-
Iy.
If a part seems especially
difficult to remove
or
install,
stop and examine w hat
may
be causing
the
problem.
Whenevar
tapping is
necessary,
tap lightly using
a
wooden or
plastic
faced
mallet. Use
an
im-
pact driver for
screws
(particularly
for
the
removal
of
screws
held
by
a locking agent)
in
order
to
avoid
damaging the
screw
heads
.
(5)
Edges
Watch
for sharp
edges,
especially during
major
engine
disassembly
and
assembly.
Pro-
tect your
hands
with gloves
or
a
ptece
of
thick
cloth
when
lifting the
engine
or turning it
over.
(6)
High Flash-point Solvent
A high flash-point solvent
is
recommended
to
reduce
fire
danger.
A
commercial
solvent
commonly
available
in North
America
is
Stoddard solvent (generic
name)
.
Always
follow manufacturer
and container directions regarding the
use
of any solvent.
(7)
Gasket
,
O;ing
Do
not
reuse a
gasket or
O;ing
once it has been
in
service.
The
mating
surfaces around
the gasket should be
free
of
foreign
matter
and perfectly smooth
to
avoid oil or
com-
pression
leaks.
(8)
l
iquid
Gasket, Non-permanent
Locking Agent
Follow
manufacturer's
directions
for
cleaning
and preparing surfaces
where
these
compounds
will
be
used. Apply
sparingly. Excessive amounts may
block
engine
oil
passages and
cause
serious damage. An example
of
a
non-permanent locking agent
commonly
available in
North
America
is
Loctite
Lock'
n
Seal (Blue).
(9)
Press
A part installed
using a press
or
driver,
such
as a w heel
bearing,
should
first
be coated
with oil on its outer or inner circumference so
that
it will go into
place
smoothly.
(10)
Ball Bearing
When installing a ball
bearing,
the bearing race which is affected by friction should be
pushed by a
suitable
driver. This
prevents
severe stress
on the
balls
and
races,
and
prevents
races and balls from
being
dented.
Press a
ball
bearing
until
it
stops at the stop in the hole
or on
the
shaft.

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