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Maintenance Intervals - Yamaha EX440D Supplemental Service Manual

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(
b.
Tig hten the pulse
r
set screws.
8. Remove
the dial gauge
and stand. Re-
place
the spark
plu
g and
recoil
starter.
Tightening
torq ue
Spark
plug
:
2.8 m-kg
(20
ft- Ib)
Sta rter assemb
ly
:
0.7
m-
kg
(5 ft-Ib)
2. MAINTENANCE INTERVAL
[PERIODIC MAINTENANCE]
1980
EX440D
NOTE:
-------------------------
The
tim
ing
light shou
ld be
used
to
check
if
the marks
on
the
rotor
and base are aligned
when both
are rep laced
with
new
ones
.
The
marks
shou ld a
li gn
at any specified
timing
.
Every
Check point
2
0
hrs. or
40 hrs.
or
80
hrs.
or
When
Seasona
lly
400
km
800 km
1.600
km
necessary
(250
mil
(500mi)
(1.000mi)
ENGINE:
Tightness
of
bolts
and
nuts
0
0
8ends.
cracks
and
wear
0
0
Abnorma
l
no
ise
0
0
Loose
connection
and
breaks
of
fuel
and
pulse pipes
0
0
Loose con nection and breaks
of
oil
pipes
0
0
Loose
connection
and breaks
of
oil
delivery pipe
0
0
Manua
l
rope starter
syst
em
0
0
Carbu
retor
Operation
of
starter
jet
0
0
Mixing
adjuster (pilot sc rew)
0
0
Idli
ng speed
adjust
me nt
0
0
Operation
and adjustment of oi
l
pump
0
0
Ign ition
ti
ming
0
Cylinder
comp
ressions
0
a
M
uffler
joints
0
0
Cylinde
r
head/
exhaust
pipe
decarbonize
0
Spark plug
cond
ition.
gap and cleaning
0
0
Tig
htening
of
the
cy linde
r
head"
0
DR IVE:
Tightness of
bolts
and
nuts
0
0
Wea
r
on slide
runners
0
0
Primary
drive
system
0
0
V-be
lt
0
0
Secondary drive system
0
0
Sheave distance
0
0
Sheave
offset
0
0
Brake pad wear
0
0
Brake
ope
rat
ion
and ad
justment
0
0
Guide whee
l
rubber
0
0
Wea
r of
drive track w hee
l
sprocket
0
0
Drive
track
ad justmen
t
0
0
Breaks in drive track
0
0
Be nds
in
fro nt and rear axles
0
0
Checking of lock
washe
rs
0
0
Drive
cha
in
adjustment
0
0
Drive
chain
oil
level
0
0
-3-

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