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ENGINE MAIN1iENANCE -
Carburetion and Fuel System
How to Overhaul, Replace Parts, Adjust
After
re-assembled,
readjust
fuel
level
or the regulator
completely
.
Never try to overhaul
or
replace
the
throttle valve
or
shaft.
Never damage the
top of
the
adjuster.
®
When replacing.
confirm if the orifice
of the body
is smooth
.
Too
tight screwing
may damage
the
taper
of the adjuster
or
the or
if
ice
of
the body when replacing
.
Confirm the
correct
position.
@
When
assembling
the check
valve
.
ensure all the outer lip
of the check
valve fit in the hollovv
of
the
pump
body.
and also
ensure
the
valve
seat of
the pump body
and six
ports
of the
check valve
coincide completely.
If
not, the pump may n
ot
actuate, or
show poor
performance.
Secure
firmly
Deformed spring may result poor
per-
••
•
•
•
'
.
•
•
formance.
@.:-------~o
When assembling. ensure the
spring
·~
in correct position
for
the
guide of
the
•
•
0
------@
D
o no
t try
to o
verh aul
or repl
ace
th
e
choke
niechani srn
rec
kl essly
.
If
tl1e sl1a
ft
is
bent.
o
r
tl1e
lever
is
damaged
.
can
rep
lace.
Be
care
ful not t
o lose
t
he fric
t
ion
ball
or
t
l1
e spr
i11g.
Aft
er replaced the
c ho
ke
valve
f
ixing
screw
s
n1ust
be
ham
n1ered
f irmly
.
If
no
t
loose
scr
ew
s
rnay
cause a
fat
al
damage
for
the
en gine
.
N
ever f
orget to
insert
ring
.
CD
Wh
en
assernb
ling
CD
®@@@@
care should
b
e
takeri
.
All
tt1e
fuel
passages
mus
t coincid
e
.
@
Sec
ure f irmly
D
o no
t d
amage the tip
of
th
e
taper.
®
Wh
en
the
tip
is
w
or
n
or
d amaged.
replace with
@by
assemb ly
.
~
-------@
lever
•
.
Ii)\
I
~6
-
'--.&
: : : : . .
- =:_====;======
tfi'
&--------~~
'!:JI
T
ake care not to
mak
e
any
flaws
inside
and
the
sea
t
section.
Confirm
if
the
action
is
enough
.. -
•
smooth.
Insert correctly in
the
hollow
of
the
pump body.
@
The outer lip must be correctly posi-
tioned when assembling.
Never pull or bend.
@
Handle the diaphragm
spring
carefully.
If pulled or bent, spring may effect
poor performance.
When diaphragm spring
is
replaced.
readjust fuel level of the regulator.
@
Secure the nut after fuel level
adjust-
ment.
•
•
•
Whe
n
the
seat
sect
ion
is
worn or
•
dam aged,
repl
ace
with@
b
y
assembly
.
~
®
Fig.
8-22
-62-
II
•
...
•
•
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