Replace In-Line Fuel Filter; Toe-In Adjustment; Brake Adjustment; Carburetor Adjustment - Sears 917.25930 Owner's Manual

Sears st/12 garden tractor owner's manual
Table of Contents

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AS NEEDED
:
1.
REPLACE
I N-LI
NE FUEL Fl LTER
If
f uel
filter
is
clognccJ,
obstruct rng fuel flow to carburetor,
replacemen
t is
r
equirccl.
a.
With
Engine
cool
. remove
and
plug
Fuel
L
ine Sections
as removed from
both
ends of Fuel
Fi lter
(Fig.
25).
b.
Place
new
FLrel
Filter i
n
position in
Fuel
Line (arrow
on side of Filter
in
direction of fuel flow).
A
BE SU
RE THER
E A RE
NO FUEL LINE
L
EA KS A
ND TH
A
T
FUEL
LINE
IS
IN
PROPER POS ITION IN HOSE
CLAMPS.
2.
TOE-IN ADJUST MENT
If
any
parts
in
Front Axle
or
Steering
Mechanism are
being
repla
ced,
Tie
Rod
adjustment is
required.
a. Loosen Jam
Nuts
(Fig.
26)
at
each end
of
Tie
Rod
Ad
·
justment
Sleeves.
b.
Adjust
both Tie Rods so that Tie Rod Joints measure
from 10
to 10
·
1/
8
inches from center
to
center.
c.
Tighten Jam Nuts,
making
su re
T
ie
Ro
d Joi nts are
par-
allel
(180°) t
o
each
other
.
This
adjust
ment
secures
proper
Front
Wh
ee
l Toe-i
n and
steering
operation.
3
.BRAK
E
ADJUS
TMENT
If Clutch-Brake Pedal
(Fig.
27) has more than
approximate-
ly
4 inches
of travel from
vertical to full brake position
then brake
adjustment
is
necessary.
a.
Loosen
Jam
Nut
(F ig. 27)
in order
to
turn t
urnbuckle
cl ockwise (from
in
front
of
t
ractor
) one turn
at
a
time
until
Cl
utch-Brake
Pedal
regains 4
rn
chcs
o
f
t ravel.
b.
Tighten Jam Nut against
Turnbuckle.
4
.PARKING BRAKE ADJUSTMENT
If
Parking
Brake
will not hold tractor. Park
ng
Brake ad·
justment
is necessary.
a.
Loosen
Parking Brake Hex Nuts
(Fig.
27).
b. Place Parking
Brake Lever in
locked
positron.
c.
Hold
Clutch
-Brake
Pedal
in
brake
position
and
t
igh
ten
first Hex
Nut finger
tight
against Bushing.
d.
Rel
ease
Clutch -Brake
Peda
l
and turn
first
Hex Nut two
turns
more agarnst
Bushing.
e. Tighten second
Hex
Nut against frrst
Hex Nut.
5
.CA RBURETOR
ADJUSTMENT
If
Engine lacks power
or does
not idle properly, the Car-
buretor
may need
adjustment.
a. Main Fuel (High Speed) Screw (Fig. 28) should not re-
quire adjustment. If resetting
is necessary,
turn clock-
wise, closing
finger tight
ONLY,
then turn
counterclock-
wise
1
to
1
-
1/8
turn.
b.
Turn Idle Adjusting Needle (Fig. 28) clockwise, closing
finger t ight ONLY, and
then
turn counterclockwise
3/4
to 7/8
turn.
c.
Start Engine and allow to warm for
f
ive mintues.
d.
Make final
adjustments
with Engine
running
and Gear
Shift Lever
in
Neutral
posit
ion.
-- Turn
Idle
Adjusting Needle
counterclockwise until
Engine
runs "rough"
then
clockwise
until Engine
begins to miss.
Ret
urn Screw to
a
point
midway be-
tween
these·
extremes.
Throttle Stop Screw
(Fig.
28)
should
not require
ad-
justment. If resetting is necessary,
set
to
obt
ain the
slowest
engine
speed that will
allow
smooth
accellera-
tion
.
6.R
E-TENSION
V-BE
LT
It
may be
occasional
ly
necessary to re-tension V-belt.
(See
page
6.
CHECK TO MAKE SURE TRACTOR
DOES
NOT START WITHOUT FU
L
LY
DEPRES-
SING
CLUT
CH-BRAKE PEDA
L.
g.
FI
GURE 26

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