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toct the outer
circumference
of
boll
check
seot.
lt
is odvisoble
to
use
new
seot
to
ossure
good
seol
in
costing.
)-21202
FIGURE
I5
-
lnstolling
Pump
Cover
lf
pump dischorge needle
ond
seot
were
removed, insert
needle
in
pos-
soge
(moke sure
point
of
needle
ex-
tends
toword
seot)
ond
instoll seot
by
driving
into ploce with smoll
hommer
on
protruding
tip of
seot.
Drive
seot
inword
until groove
is
iust
flush
with
lower end
of
costing.
With
costing
in
upright
position,
in-
sert
step-up
rod
opproximotely
holf
woy into
sleeve
of
diophrogm
ossem-
bly, drop in
ploce, inserl spring
ond
retoiner
ond
position
new
diophrogm
cover
in
ploce.
Using
Tool
J-21202,
top tool
with
hommer
until
diophrogm
cover
seots
in
cosling
(Fig.
l6).
New
cover must
be
used
if
originoJ
wos
pierced.
)-21202
FIGURE
l6
-
Instolling
Step-Up
Rod
Diophrogm
Cover
FUEL
_
CARBURETION
_
EXHAUST
moved,
ottoch
connector
link ond
in-
sert
shoft
in
ploce, insloll throttle
volve
ond
new ottoching
screws.
Do
not
tighten
screws.
Trode-mork
(C)
should
extend
toword
idle port
when
viewed
from monifold flonge
side.
With
screws
loose,
top
volve lightly with
screw
driver (to
seol
volve
in
bore), hold
in
ploce
with finger ond tighten
volve
screws.
lf throttle
lever odiusting
screw
hos
been instolled
prior
to
this
opero-
tion, be
sure
to
bock screw
out
so
throttle
volve
con seot.
lt
is
odvisoble
to
upset ends
o{
screws
ofter
volve
hos
been
instoiled.
lnstoll upper pump
wosher
ond
spring. Instoll
wosher
ond
pump
de-
loyer spring
on
connector
ink.
lnstoll
pump
orm, moking
sure connector link
extends
through hole
in
lower
end
of
orm,
ond
upper
end
of
orm
is
over
pump plunger. Hold
in
ploce
ond
in-
stoll
retoiner
ond
screw.
lnstoll
pump
odjusting
nut
on
connector
link
ond
re-
toiner
clip on
upper
end
of
Plunger
shoft.
lf
choke
wos
completelY
disossem-
bled instoll choke shoft ond
volve,
center
volve
in bore by topping
light-
ly with
screw
driver, hold
in
ploce
ond
instoll new choke volve
ottoching
screws.
Attoch
fost
idle
connector
rod
to
choke lever
ond
instoll choke
lever
on shoft. Crimp forked
ends
of
lever
with pliers
to
secure
in
ploce.
Attoch
fost idle
com
to
lower end
of
connec-
tor
rod
ond
instoll fost idle
com,
wosh-
er
ond
retoiner. Assemble choke
pis-
ion ond link
(wire)
to
choke
Piston
lever, slide
piston
into cylinder,
posi-
tion
lever
on end
of
shoft
ond
secure
with
ottoching
screw.
Be sure
choke
linkoge
moves
freely ond does
not
bind in ony
position.
lnstoll
choke
housing gosket,
thermostotic
coil
housing
ond
revolve housing
counter-
:lockwise
until indicotor
mork is
ot
in-
dex. lnstoll the three
retoiners
ond
ottoching
screws.
lnstoll
throttle
lever
odiusting screw
ond spring, ond
idle
odiusting
screw
ond
spring.
With
cor-
buretor inverted, instoll
fuel
intoke
needle
ond seot.
Insert
floot pin
into
floot
brocket
ond instoll
in
ploce
in
costing.
Secure
floot pin with the
two
ottoching
screvvs.
CARBURETOR ADJ USTMENTS
Floot Adiustment
This
corburetor
is equipped with
o
Resilient
Seot
ond
speciol
precoutions
FIGURE
l7
-
Floot
Adiustment
Pump
Adiustment
Pump odiustment
must
be
mode
eoch time corburetor
is
disossembled,
ond
must
be
mode
before
fost
idle
ond
unlooder
odiustments.
Bock
out throitle lever (idle
speed)
odiusting screw
ond
hold
choke
wide
open
so
throttle volve
seots
in
bore
of
corburetor.
Turn pump odiusting
nut
to obioin o
cleoronce
of '/r,'",
gouge
included
with
Choin Gouge
J-21
')38,
between
wosher
on
pump
plunger
shoft
ond
boss
on
bowl cover.
Adlusr-
ing
nut
is
self-locking
(Fig.
18
).
Fost
ldle Adiustment
Revolve
fost
idle
com
until tong
on
throttle lever
is
oligned
with
index
mork
on com.
Bend tongs
on
throffle
lever
to
give .023", gouge
included
I
I
lf
throttle shoft
ossembly
wos
re-
must
be
token in the
odlustment os
the
resilient
seot moteriol
will
ossume
o
temporory
"set"
if
the
needle
is
pressed
into the
seot. This
will
result
in on
incorrect
fuel
level when
the
temporory
set
is
relieved.
NEVER
PRESS
THE NEEDLE
INTO
A
RESILIENT
\FA
I
With
corburetor
ossembly
inverted,
bowl ond bowl gosket
removed,
ond
only
the weight
of
the
floot
pressing
the
needle
into
its seot,
meosure the
verticol
distonce
from
the
costing
to
the smoll "laump"
ot
outer ends
of
floot. Gouge both
ends
of
floot.
Ver-
ticol
distonce should
be
tt/rr",
gouge
included
with Choin Gouge
J-21 138.
Adiustment
con be
mode bY
removing
floot from
costing.
or
by holding
lip
end
of floot
brocket
securelY
with
needle
nose
pliers.
However,
be
sure
to
hold
floot
lip
owoy
from
needle
when
odiusting.
Bend
brocket
ot
norrowest
portion
to
odiust (Fig.
l7).
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