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ENGINE MAINTENANCE -
Carburetion and Fuel System
How to Overhaul, Replace Parts, Adjust (SW433C, SL4338, EL4338, EW433C, SLJJBD)
After re-assemuled,
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.
@
•
•
•
- - - - -
-@
Do
not
try to overhau
l
or replace the
choke
mechanism recklessly.
If
the
shaft
is
bent, or
the
lever is
dan1aged,
can
replace
.
Be
careful
not
to lose
the
friction ball
or the spring.
After replaced the
choke
valve
fi
xing
screws
must be hammered
firmly.
If
not
loose screws may cause a
fetal
damage for the
engine.
Never
forget
to
insert
ring.
When replacing,
confirm if the orifice
of the body
is smooth.
Too tight
screwing
may
damage the
taper of
the
adjuster or the orifice of
the
body
when
replacing.
CD
Wh
en
assembl
ing
CD ®@ ©
®
@
"'=~
r- ------
-
-
-
--
care shoul
d
be taken
.
®
All the
fuel
passages
must
coincide.
•
Confirm the
correct
position.
®
>
~~)~----®
When
assembling
the
check
valve,
ensure all
the
outer
lip
of the check
valve
fit in the hollow
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 not
actuate, or
show poor
performance.
@
Secure firm ly.
Secure firmly.
Do
no
t
damage the tip
of the
taper.
-
®
When
the
tip is
worn
or damaged
,
replace
with
@
by
assembly.
Deformed sPring may result poor
per-
formance.
@--------.:o
When assembling, ensure the spring is
~~":::ii
0
~
-------
@
in correct
position for
the guide of
the
r..:::::::=::=;~,
lever.
Confirm
if
the
action is enough
smooth.
I
~~-------'z2'
@--~~~~--~r-----==-------~====~\!:!:)
Tak
e ca
re
not to make any flaws inside
and the seat
section .
•
•
When
the
seat
section
is
worn or
Insert
correctly in
the hollow of
the
•
damaged
,
replace with
@
by
assembly.
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.
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.....
@
•
Fig. 7-32
-84-
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