EA
$20
1
80
IMPORTANT INFORMATION
EA
$20
lll0
PR
EPARATION FOR REMOVAL AND
DI
SASSEMBLY
1. Before removal and disassembly, remove a
ll
dirt, mud, dust and foreign material.
2. Use only the proper tools and cleaning equip-
men
t.
Refer to "SPECIAL TOOLS" on page 1-18.
3. When disassembling, always keep mated
pa
rt
s together. This includes gears, cylinders,
pistons and other parts that have been "mat-
ed" through normal wear. Mated parts must
always be reused or replaced
as
an assem-
b
ly
.
4. During disassembl
y,
clean all of the parts and
place them
in
tr
ays
in the order of disassem-
b
ly
. This will speed up assembly and a
ll
ow for
the correct
in
sta
ll
ation of a
ll
parts.
5. Ke
ep
a
ll
pa
rt
s away f
rom
any
so
urce
of
fire.
REPLA
CE
ME
NT
PARTS
Use only genui
ne
Yamaha parts for all replace-
ments. Use o
il
and grease recommended
by
Yamaha f
or
a
ll
lubrication jobs. Other brands
may be similar in function and appearance, but
inferi
or
in quality.
1-11
IMPORTANT INFORMATION
.....,,
..
G
AS
KETS, OIL SEALS AND
0-R
INGS
1. When overhau
li
ng the engine, replace all
gaskets, seals and
0-r
ing
s.
A
ll
gasket surfac-
es
, oil seal lips and 0 -rings mu
st
be cleaned.
2. During reassembly, properly o
il
a
ll
mating
parts and bea
ri
n
gs
and lubricate t
he
o
il
seal
lips with grease.
2--~
~
-
-
~
'-
0-
----.
1 •
4
1. O
il
2.
lip
3. Spri
ng
4.
Grease
.....,.,.
LOCK WASHERS/PLATES AND COTTER
PINS
A
ft
er remova
l,
replace a
ll
l
oc
k washers/plates
"1" and co
tt
er pins. After the bolt
or
nut has been
tightened to specification, bend the l
oc
k tabs
along a flat
of
the bolt or nu
t.
0
0
1
BEARINGS AND OIL SEALS
Install bearings "1" and o
il
seals "2" so that the
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