Agri-Fab LST 42 User manual
Model No.
LST 42
OWNERS
MANUAL
PRINTED IN U.S.A. FORM NO. 48737 (10/02)
CAUTION:
Read Rules or
Sa e Operation
and Instructions
Care ully
• Sa ety
• Assembly
• Operation
• Maintenance
• Parts
42" SNOW THROWER
2
TABLE OF CONTENTS
SAFETY RULES ...................................................................................................................................................................3
FULL SIZE HARDWARE CHART ....................................................................................................................................... 4
CARTON CONTENTS ......................................................................................................................................................... 5
ASSEMBLY INSTRUCTIONS ..............................................................................................................................................6
OPERATION ...................................................................................................................................................................... 18
MAINTENANCE ................................................................................................................................................................. 19
SERVICE AND ADJUSTMENTS ...................................................................................................................................... 20
STORAGE .......................................................................................................................................................................... 21
TROUBLESHOOTING ....................................................................................................................................................... 21
REPAIR PARTS ................................................................................................................................................................ 22
SLOPE GUIDE ................................................................................................................................................................... 27
PARTS ORDERING ............................................................................................................................................ Back Cover
IMPORTANT:
Rear wheel weights and tire chains are required to provide extra traction
and stability when using this snow thrower attachment. These items are
available where you purchased your tractor.
WHEEL WEIGHTS TIRE CHAINS
3
SAFETY
Any power equipment can cause injury i operated improperly or i the user does not understand how to operate
the equipment. Exercise caution at all times, when using power equipment.
•Read this owner's manual care ully and know how
to operate your snow thrower and how to stop the
unit and disengage the controls quickly.
•Never allow children to operate the equipment.
•Never allow adults to operate the equipment
without proper instruction.
•Keep the area o operation clear o all persons,
especially small children, and pets.
•Thoroughly inspect the area where the equipment
is to be used and remove all door mats, sleds,
boards, wires and other oreign objects.
•Disengage all clutches and shi t into neutral be ore
starting engine.
•Do not operate equipment without wearing ad-
equate winter outer garments.
•Wear substantial ootwear which will protect eet
and improve ooting on slippery sur aces.
•Check uel be ore starting the engine. Do not
remove the uel cap or ill the uel tank while the
engine is running or hot. Do not ill the uel tank
indoors. Gasoline is an extremely lammable uel.
•Make sure the snow thrower height is adjusted to
clear the type sur ace it will be used on.
•Do not use the snow thrower without the rear
weight attached to the tractor.
•Never make any adjustments while the engine is
running.
•Always wear sa ety glasses or eye shield during
operation or while per orming and adjustment or
repair.
•Do not place hand or eet near rotating parts. Keep
clear o the discharge opening at all times.
•Use extreme caution when operating on or crossing
gravel sur aces.
•Do not carry passengers.
•A ter striking a oreign object, stop the engine,
remove the wire rom the spark plug and then
thoroughly inspect the snow thrower or damage.
Repair any damage be ore restarting and operating
the snow thrower.
•I the snow thrower starts to vibrate abnormally,
stop the engine immediately and check or the
cause. Vibration is generally a warning o trouble.
•Stop the engine whenever you leave the operating
position, be ore unclogging the snow thrower or
making any adjustments or inspections.
•Take all possible precautions when leaving the unit
unattended. Disengage the attachment clutch lever
or switch, lower the snow thrower, shi t into neutral,
set the parking brake, stop the engine and remove
the key.
•When cleaning, repairing or inspecting, make
certain all moving parts have stopped. Disconnect
the spark plug wire and keep it away rom the plug
to prevent accidental starting.
•Do not run engine indoors except when transport-
ing the snow thrower in or out o the building. Open
the outside doors. Exhaust umes are dangerous.
•Do not clear snow across the ace o slopes.
Exercise extreme caution when changing direction
on slopes. Do not attempt to clear steep slopes.
Re er to the slope guide on page 27 o this manual.
•Never operate the snow thrower without guards,
plates or other sa ety protection devices in place.
•Never operate the snow thrower near glass enclo-
sures, automobiles, window wells, drop o s etc.
without proper adjustment o the snow thrower
discharge angle.
•Never direct discharge at bystanders or allow
anyone in ront o the snow thrower.
•Never run the snow thrower into material at high
speeds.
•Do not overload the machine capacity by attempt-
ing to clear snow at too ast a rate.
•Never operate the machine at high transport speed
on slippery sur aces. Look behind and use care
when backing.
•Watch or tra ic and stay alert when crossing or
operating near roadways.
•Disengage power to the snow thrower when trans-
porting or when not in use.
•Use only attachments and accessories approved by
the manu acturer o the snow thrower (such as
wheel weights, counter weights, cabs etc.)
•Never operate the snow thrower without good
visibility or light.
Look or this symbol to point out important sa ety precautions. It mean--Attention!!
Become alert!! Your safety is involved.
4
HARDWARE PACKAGE CONTENTS
REF. QTY. DESCRIPTION REF. QTY. DESCRIPTION
Q 6 Hex Lock Nut, 1/4"
R 1 Whizlock Nut, 5/16"
S 8 Hex Nut, 5/16"
T 4 Hex Lock Nut, 5/16" (2 pcs. spare parts)
U 9 Hex Lock Nut, 3/8"
V 3 Hairpin Cotter, 1/8"
W 3 Hairpin Cotter, 5/64"
X 1 Hairpin Cotter, 3/32"
Y 2 Shear Bolt (spare parts)
Z 1 Chain, Tensioning
AA 1 Spring
BB 3 Chute Keeper
CC 1 Trunnion
DD 2 Lock Pin
EE 1 Spacer
FF 1 Plastic Cap
GG 2 Nylon Tie
A 4 Hex Bolt, 3/8" x 1"
B 2 Hex Bolt, 5/16" x 1-3/4"
C 6 Hex Bolt, 1/4" x 1"
D 4 Carriage Bolt, 3/8" x 1"
E 2 Carriage Bolt, 5/16" x 1-3/4"
F 2 Carriage Bolt , 5/16" x 1-1/4"
G 2 Carriage Bolt, 5/16" x 1"
H 2 Carriage Bolt, 5/16" x 3/4"
I 4 Shoulder Bolt, 3/8" x 5/8"
J 10 Lock Washer, 3/8"
K 10 Lock Washer, 5/16"
L 7 Washer, 1/4"
M 2 Washer, 5/16"
N 1 Washer, 3/8"
O 2 Washer, 1/2"
P 2 Bowed Washer
ABCDE FGH
Q
M
N
L
I
JK
O
T
U
S
CC
X
Y
V
Z
BB
AA
NOT SHOWN ACTUAL SIZE
SHOWN ACTUAL SIZE
W
Store these two bolts and nuts in a safe
place until needed. (See page 20.)
T
EE GG
DD FF
SPARE PARTS BAG
P
R
5
CARTON CONTENTS
1. Right Hand Side Plate (Stamped "R")
2. Le t Hand Side Plate (Stamped "L")
3. Anti-rotation Bracket
4. Engagement Rod
5. Engine Pulley Keeper
6. Le t Hand Hanger Bracket (Stamped "L")
7. Right Hand Hanger Bracket (Stamped "R")
8. Chute Crank Rod Assembly
9. Support Tube, Crank Rod
10. Li t Handle Tube and Cable
11. Clutch Idler Assembly
12. Cable Bracket
13 Housing Assembly
14. V Belt, Drive
15 V Belt, Auger (Attached to Housing Assembly)
16. Chute and Control Cable Assembly
Hardware Package (Stored inside Plastic Keg)
ASSEMBLY
6
1. Remove all parts and hardware packages rom the
carton. Lay out parts and hardware and identi y using
the illustrations on pages 4 and 5.
NOTE: Not all o the supplied parts and hardware will be
needed or your particular tractor. Unneeded items
may be discarded a ter you have completed assem-
bly.
REMOVAL OF PARTS FROM CARTON
(2) 7/16" Wrenches
(2) 1/2" Wrenches
(2) 9/16" Wrenches
(2) 3/4" Wrenches
(1) Kni e
ADDITIONAL ITEMS REQUIRED
General Purpose Grease
TOOLS REQUIRED FOR ASSEMBLY
ITEMS REMOVED FROM TRACTOR
1. Store all tractor parts that you remove and do not
need to re-use to assemble the snow thrower.
TRACTOR PREPARATION
Be ore per orming these instructions, re er to the Service
and Adjustments section o your tractor owner's manual
or speci ic sa ety instructions.
1. Allow engine, mu ler and exhaust de lector to cool
be ore beginning.
2. Remove any ront or rear attachment which is
mounted to your tractor.
3. Remove the mower deck. Re er to your tractor
owner's manual or removal instructions. Mark all
loose parts and save or re-assembly.
4. Remove the tractor hood and grill assembly. Re er to
your tractor owner's manual or removal instructions.
CAUTION:Be ore starting to assemble
the snow thrower, remove the spark plug
wire(s), set the parking brake and
remove the key rom the tractor ignition.
ASSEMBLY OF SIDE PLATES TO TRACTOR
Right hand (R.H.) and le t hand (L.H.) side o the tractor
are determined rom the operators position while seated
on the tractor.
TRACTORS WITH FRAME MOUNTED FRONT
SUSPENSION BRACKETS (See page 7 or tractors
with axle mounted ront suspension brackets.)
1. Remove two bolts rom each side o the tractor
rame as shown in igure 1.
2. I there is a third bolt on the right side, as shown in
igure 1, remove the nut and washer rom the bolt.
FIGURE 1 RIGHT SIDE VIEW
3. Assemble the R.H. Side Plate (marked "R") to the
now empty holes in the right side o the tractor rame.
Use two 3/8" x 1" hex bolts and 3/8" lock washers as
shown in igure 2. Repeat or the L.H. side.
4. Assemble the whizlock nut onto the third bolt (i
present) on the right side o the tractor.
NOTE: Be sure to reassemble all bolts and nuts
to tractor rame i you remove the side plates.
FIGURE 2 RIGHT SIDE VIEW
3/8" x 1"
HEX BOLT
3/8" LOCK
WASHER
R.H. SIDE
PLATE
5/16" WHIZLOCK NUT
(IF BOLT IS PRESENT IN TRACTOR)
REMOVE BOLTS
FROM THESE HOLES
FRONT
SUSPENSION
BRACKET
REMOVE NUT & WASHER
AND LEAVE BOLT (IF PRESENT)
7
2. Attach the R.H. Side Plate (marked "R") to the right
side o the tractor rame. For the ront hole use a 3/8"
x 1" hex bolt, a 3/8" lock washer, a 1/2" lat washer
and a 3/8" hex lock nut. Use the lat washer as a shim
between the rame and the side plate. For the rear
hole use a 3/8" x 1" hex bolt, and a 3/8" lock washer.
See igure 5. Repeat or the L.H. side.
NOTE: The bolts will cut threads into the ront holes
i that is required.
NOTE: I the side plates are removed rom the
tractor rame, bolts must be assembled back into
the empty holes in the rame.
5. Assemble a shoulder bolt, a 3/8" lock washer and a
3/8" hex lock nut to the bottom hole in each side
plate. See igure 3.
6. Proceed to page 8.
3. Assemble a shoulder bolt, a 3/8" lock washer and a
3/8" hex lock nut to the bottom hole in each side
plate. See igure 6.
FIGURE 5 RIGHT SIDE VIEW
FIGURE 6 RIGHT SIDE VIEW
FIGURE 4 RIGHT SIDE VIEW
FIGURE 3 RIGHT SIDE VIEW
TRACTORS WITH AXLE MOUNTED FRONT
SUSPENSION BRACKETS
1. Remove the bolt rom the hole on each side o the
tractor rame as shown in igure 4.
3/8" SHOULDER BOLT
3/8" HEX LOCK NUT
R. H. SIDE PLATE
3/8" LOCK
WASHER
3/8" LOCK
WASHER
R.H. SIDE
PLATE
1/2" FLAT
WASHER
3/8" x 1"
HEX BOLT
3/8" HEX
LOCK NUT
3/8" SHOULDER BOLT
3/8" HEX LOCK NUT
R. H. SIDE PLATE
3/8" LOCK
WASHER
REMOVE BOLT FROM
THIS HOLE
FRONT
SUSPENSION
BRACKET
8
FIGURE 10 RIGHT SIDE VIEW
INSTALLING HANGER BRACKETS
For better clearance, lower the tractor's suspension
arms using the attachment li t lever.
On Tractors With Foot Rest Brackets (Figure 7)
1. Remove the bolt and nut that asten the L.H. and
R.H. oot rest brackets to the rame. See igure 7.
2. Attach the L.H. Hanger Bracket (marked "L") to the
inside o the tractor rame using two 3/8" x 1"
carriage bolts, 3/8" lock washers and 3/8" hex lock
nuts. The bolt heads go on the inside o the tractor
rame. Repeat or the R.H. side. See igure 7.
FIGURE 8 LEFT SIDE VIEW
FIGURE 7 LEFT SIDE VIEW
On Tractors Without Foot Rest Brackets (Figure 8)
3. Find the empty hole beneath the oot rest. Attach
the L.H. Hanger Bracket (marked "L") to the inside
o the rame using a 3/8" x 1" carriage bolt (head to
inside), a 3/8" lock washer and a 3/8" hex lock nut.
See igure 8. Repeat or the R.H. side.
2. Assemble a shoulder bolt and 3/8" hex lock nut to
the R.H. side o the tractor rame, using the irst
empty hole to the rear o the R.H. hanger bracket.
See igure 10.
FIGURE 9 LEFT SIDE VIEW
INSTALLING SHOULDER BOLTS
All Tractors
1. Remove the bolt, washer and nut which asten the
sway bar bracket to the L.H. side o the tractor
rame. Replace with a shoulder bolt and a 3/8" hex
lock nut as shown in igure 9.
SHOULDER BOLT
3/8" HEX
LOCK NUT
R.H. HANGER BRACKET
BOLT REMOVED
FROM THIS HOLE
3/8" x 1"
CARRIAGE
BOLT
3/8" LOCK
WASHER
3/8" HEX
LOCK NUT
L.H. HANGER
BRACKET
SUSPENSION ARM
3/8" x 1"
CARRIAGE
BOLT
3/8" LOCK
WASHER 3/8" HEX
LOCK NUT
L.H. HANGER
BRACKET
SUSPENSION ARM
BOLT REMOVED
FROM THIS HOLE
SWAY BAR
BRACKET
SHOULDER BOLT
3/8" HEX
LOCK NUT
9
FIGURE 13 RIGHT SIDE VIEW
INSTALLING CLUTCH/IDLER ASSEMBLY
This section covers the installation o the Clutch/Idler
assembly to tractors with attachment clutches that are
either rod operated (p. 9), cable operated (p. 10) or
electric (p. 12). Use the appropriate instructions or
your tractor.
MANUAL (ROD OPERATED) ATTACHMENT CLUTCH
1. Move the attachment clutch lever on the dash
panel to the disengaged (down) position.
2. Screw the trunnion onto the end o the snow
thrower engagement rod as shown in igure 11.
3. Locate the clutch arm (where the mower clutch rod
was connected) underneath the right hand side the
tractor, just to the inside o the suspension arm. If
there is an extension attached to the clutch lever,
the extension, bolt and nut must be removed and
stored with the mower deck.
IMPORTANT: Re-attach the extension to the
clutch lever be ore reinstalling the mower deck.
4. Position the engagement rod to the inside o the
clutch arm and insert the drilled end o the rod
through the arm. Secure with a 5/64" hairpin cotter.
See igure 11.
5. Be sure to li t up the ront end o the engagement
rod (as shown in igure 12) when per orming the
next operation. You can temporarily support the rod
using a rubber band tied to the engine pulley
keeper.
6. Attach the snow thrower's clutch/idler assembly to
the tractor rame by sliding the assembly's notched
arms onto the two shoulder bolts assembled to the
inside o the tractor rame. Li t the ront o the
assembly and attach it to the R.H. and L.H. hanger
brackets using two pivot lock pins and 1/8" hairpin
cotters. See igure 12.
FIGURE 12 RIGHT SIDE VIEW
7. Make sure the attachment clutch lever on the dash
panel is in the disengaged (down) position.
8. Pivot the upper idler arm so that it rests against the
stop bolt and is pointing toward the ront as shown
in igure 13. Screw the trunnion along the threads
o the engagement rod until it is aligned at the ront
end o the idler arm slot. Attach the trunnion to the
slot using the 3/8" lat washer and a 5/64" hairpin
cotter. See igure 13.
9. Remove the engine pulley keeper rom the side o
the tractor rame by removing the washer and nut
that secure the keeper. Attach the new pulley
keeper supplied with the snow thrower, reusing the
original bolt, washer and nut. See igure 13.
NOTE: Some tractors may already be equipped
with an identical pulley keeper.
FIGURE 11 RIGHT SIDE VIEW
PIVOT LOCK PIN
1/8" HAIRPIN COTTER
ENGAGEMENT
ROD
IDLER ARM
5/64" HAIRPIN
COTTER
TRUNNION
STOP BOLT
3/8" FLAT
WASHER
NEW ENGINE PULLEY KEEPER WITH
ORIGINAL BOLT, NUT AND WASHER
ENGAGEMENT ROD
5/64" HAIRPIN
COTTER
TRACTOR’S CLUTCH ARM
SUSPENSION ARM
TRUNNION
REMOVE EXTENSION,
BOLT AND NUT
(IF PRESENT)
10
10. Assemble the short "V" belt onto the engine pulley
and then onto the large pulley on top o the clutch/
idler assembly. The belt must be placed to the
inside o the engine pulley keeper, the idler pulley
and the keeper bolt located beside the large pulley.
See igure 14.
IMPORTANT: Do Not assemble the "V" belt
around the outside o the engine pulley keeper or
the keeper bolt.
Hold this drawing above you while viewing the
Clutch/Idler Assembly from underneath the
tractor. Right and left in the drawing will be the
reverse of the viewer's right and left.
FIGURE 15
FIGURE 14 VIEWED FROM UNDERNEATH
FIGURE 16
CABLE OPERATED ATTACHMENT CLUTCHES
1. Assemble the cable bracket to the clutch/idler
assembly using two 5/16" x 3/4" carriage bolts,
5/16" lock washers and 5/16" hex locknuts. Use the
two ront holes in the cable bracket i your tractor
has a 42" mower deck. Use the two rear holes i
your tractor has a 46" mower deck. See igure 15.
2. Move the attachment clutch lever on the dash panel
to the disengaged (down) position.
3. Lay the clutch/idler assembly beneath the tractor.
4. Attach the tractor's clutch cable to the cable
bracket. Secure the cable housing guide (groove
down) to the cable bracket using the original collar
and retainer spring removed rom the mower deck.
See igure 16.
5. Place a spacer on the welded pin on the idler arm.
Hook the end o the clutch spring over the pin and
secure it with a 1/4" washer and a 5/64" hair cotter
pin. See igure 16.
11. Proceed to page 13.
ENGINE
PULLEY
KEEPER BOLT
IDLER
PULLEY
ENGINE
PULLEY
KEEPER
Left Side
of Tractor
CABLE
BRACKET
5/16" x 3/4"
CARRIAGE BOLT
5/16" LOCK
WASHER
5/16" HEX
LOCK NUT
42"
DECKS
46"
DECKS
5/64" HAIR
COTTER PIN
SPACER
GROOVE
1/4" WASHER
TRACTOR'S
CLUTCH CABLE
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