Agri-Fab LST42C User manual

Model No.
LST42C
OWNERS
MANUAL
PRINTED IN U.S.A. FORM NO. 40243 (REV. 1/7/08)
CAUTION:
Read Rules for
Safe Operation
and Instructions
Carefully
• Safety
• Assembly
• Operation
• Maintenance
• Parts
42" SNOW THROWER
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™

2
TABLE OF CONTENTS
ACCESSORIES.................................................................................................................................................................... 2
SAFETY RULES................................................................................................................................................................... 3
FULL SIZE HARDWARE CHART.........................................................................................................................................4
CARTON CONTENTS.......................................................................................................................................................... 6
ASSEMBLY........................................................................................................................................................................... 7
OPERATION....................................................................................................................................................................... 25
MAINTENANCE ................................................................................................................................................................. 26
SERVICE AND ADJUSTMENTS........................................................................................................................................ 27
STORAGE .......................................................................................................................................................................... 28
TROUBLESHOOTING........................................................................................................................................................ 28
REPAIR PARTS ILLUSTRATION............................................................................................................................. 30,32,34
REPAIR PARTS LIST................................................................................................................................................ 31,33,34
SLOPE GUIDE ................................................................................................................................................................... 35
PARTS ORDERING/SERVICE ........................................................................................................................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ifoperatedimproperlyoriftheuserdoesnotunderstandhowtooperatetheequipment.
Exercisecautionatalltimes,whenusingpowerequipment.
• Readthisowner'smanualcarefully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ofoperationclearof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foreignobjects.
• Disengageallclutchesandshiftintoneutralbefore
starting engine.
• Donotoperateequipmentwithoutwearingadequate
winteroutergarments.
• Wearsubstantialfootwearwhichwillprotectfeetand
improvefootingonslipperysurfaces.
• Checkfuelbeforestartingtheengine.Donotremove
thefuelcaporllthefueltankwhiletheengine
isrunningorhot.Donotllthefueltankindoors.
Gasolineisanextremelyammablefuel.
• Makesurethesnowthrowerheightisadjustedto
clearthetypesurface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safetyglassesoreyeshieldduring
operationorwhileperformingadjustmentorrepair.
• Donotplacehandsorfeetnearrotatingparts.Keep
clearofthedischargeopeningatalltimes.
• Useextremecautionwhenoperatingonorcrossing
gravel surfaces.
• Donotcarrypassengers.
• Afterstrikingaforeignobject,stoptheengine,remove
thewirefromthesparkplugandthenthoroughly
inspectthesnowthrowerfordamage.Repairany
damagebeforerestartingandoperatingthesnow
thrower.
• Ifthesnowthrowerstartstovibrateabnormally,stop
theengineimmediatelyandcheckforthecause.
Vibrationisgenerallyawarningoftrouble.
• Stoptheenginewheneveryouleavetheoperating
position,before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, shift 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fromtheplugtoprevent
accidental starting.
• Donotrunengineindoorsexceptwhentransporting
thesnowthrowerinoroutofthebuilding.Openthe
outsidedoors.Exhaustfumesaredangerous.
• Donotclearsnowacrossthefaceofslopes.Exercise
extremecautionwhenchangingdirectiononslopes.
Donotattempttoclearsteepslopes.Refertothe
slopeguideonpage35ofthismanual.
• Neveroperatethesnowthrowerwithoutguards,
plates or other safety protection devices in place.
• Neveroperatethesnowthrowernearglass
enclosures,automobiles,windowwells,dropoffs
etc.withoutproperadjustmentofthesnowthrower
discharge angle.
• Neverdirectdischargeatbystandersorallowanyone
in front of the snow thrower.
• Neverrunthesnowthrowerintomaterialathigh
speeds.
• Donotoverloadthemachinecapacitybyattempting
to clear snow at too fast a rate.
• Neveroperatethemachineathightransportspeed
onslipperysurfaces.Lookbehindandusecarewhen
backingup.
• Watchfortrafcandstayalertwhencrossingor
operating near roadways.
• Disengagepowertothesnowthrowerwhen
transporting or when not in use.
• Useonlyattachmentsandaccessoriesapprovedby
themanufacturerofthesnowthrower(suchaswheel
weights,counterweights,cabsetc.)
• Neveroperatethesnowthrowerwithoutgoodvisibility
or light.
Lookforthissymboltopointoutimportantsafetyprecautions.Itmeans—Attention!! Become
alert!! Your safety is involved.

4
E
BDG
HIK
O
F
X
U
Y
C
W
L
Q
S,T
R
Z
KK
EE
N
CC
BB
AA
NOT SHOWN ACTUAL SIZE
SHOWN ACTUAL SIZE
DD
M
J
JJ
FF GG
II
V
P
HH
A
LL
NN
MM
HARDWARE PACKAGE CONTENTS

5
REF. QTY. DESCRIPTION REF. QTY. DESCRIPTION
U 2 Bowed Washer
V 6 Flanged Nut, 1/4"
W 1 Flanged Nut, 5/16"
X 10 Flanged Nut, 3/8"
 Y 17 NylockNut,5/16"(2spareparts)
 Z 2 HexLockNut,3/8"
AA 1 Spring
BB 3 Chute Keeper
CC 1 Trunnion
DD 2 Hairpin Cotter, 5/64"
EE 4 Hairpin Cotter, 1/8"
FF 1 Hairpin Cotter, 3/32"
 GG 2 LockPin
HH 1 Plastic Cap
II 2 Nylon Tie
JJ 2 Chain, Tensioning
 KK 2 TailReector
 LL 1 SmallSpacer
MM 1 Large Spacer
NN 1 Pulley
A 1 Hex Bolt, 3/8" x 3-1/4"
B 2 Hex Bolt, 5/16" x 1-3/4"
C 4 Hex Bolt, 5/16" x 3/4"
D 6 Hex Bolt, 1/4" x 1"
 E 6 HexBolt,3/8"x1"(ThreadForming)
 F 2 HexBolt,5/16"x3/4"(ThreadForming)
G 6 Carriage Bolt, 3/8" x 1"
H 2 Carriage Bolt, 5/16" x 1-3/4"
I 2 Carriage Bolt , 5/16" x 1-1/4"
J 4 Carriage Bolt, 5/16" x 1"
K 2 Carriage Bolt, 5/16" x 3/4"
L 4 Shoulder Bolt
M 2 Shoulder Bolt
N 2 Shear Bolt (spare parts)
 O 7 LockWasher,3/8"
P 7 Washer, 1/4"
Q 6 Washer, 5/16"
R 8 Washer, 1/2"
S 1 Washer, 3/8" (Thin)
T 3 Washer, 3/8"

6
CARTON CONTENTS
1. SuspensionArms(2)
2. Left Hand Side Plate
3. Right Hand Side Plate
4. Anti-rotationBracket
5. EngagementRod(Notusedonsomemodels)
6. EnginePulleyKeeper(Notusedonsomemodels)
7. ChuteCrankRodAssembly
8. SupportTube,CrankRod
9. LiftHandleandCable
10. CableBracket
11. L.H.HangerBracket(OutsideMounting)
12. R.H.HangerBracket(OutsideMounting)
13. ClutchIdlerAssembly
14. V-Belt, Drive (Short) #46989
15 V-Belt, Drive (Long) #48138
16. V-Belt,Auger(AttachedtoHousingAssembly)
17. ChuteandControlCableAssembly
18. HousingAssembly
19. L.H.HangerBracket(InsideMounting)
20. R.H.HangerBracket(InsideMounting)
 HardwarePackage(StoredinsidePlasticKeg)
14
1
245
6
12
9
8
10
20
19
11
17
16
15
18
13
7
3

7
• Removeallpartsandhardwarepackagesfromthe
carton. Lay out parts and hardware and identify using
the illustrations on pages 4 and 6.
NOTE:Notallofthesuppliedpartsandhardwarewillbe
neededforyourparticulartractor.Unneededitemsmay
bediscardedafteryouhavecompletedassemblyand
checkedoperationofunit.DO NOT DISCARD the two
spareshearbolts(N)and5/16"nylocknuts(Y).Referto
theServiceandAdjustmentssectiononpage27.
REMOVAL OF PARTS FROM CARTON
TOOLS REQUIRED FOR ASSEMBLY
(2) 7/16" Wrenches
(2) 1/2" Wrenches
(2) 9/16" Wrenches
(2) 3/4" Wrenches
(1) Screw Driver
(1) Knife
ADDITIONAL ITEMS REQUIRED
General Purpose Grease
TRACTOR PREPARATION
Beforeperformingtheseinstructions,refertotheService
andAdjustmentssectionofyourtractorowner'smanual
forspecicsafetyinstructions.
• Allowengine,muferandexhaustdeectortocool
beforebeginning.
• Removeanyfrontorrearattachmentwhichis
mountedtoyourtractor.
•Removethemowerdeck.Refertoyourtractorowner's
manualforremovalinstructions.Markalllooseparts
andsaveforreassembly.
• Removethetractorhood.Refertoyourtractorowner's
manualforremovalinstructions.
CAUTION: Before starting to assemblethe
snowthrower,removethesparkplugwire(s),
settheparking brakeand removethe key
fromthetractorignition.
FIGURE 2 RIGHT SIDE VIEW
IMPORTANT: Right hand (R.H.) and left hand (L.H.) side
ofthetractoraredeterminedfromtheoperatorsposition
while seated on the tractor.
REMOVE
FRONT SCREWS
REMOVE
BROWNING SHIELD
MOWER DECK
SUSPENSION
BRACKET
FIGURE 1
INSTRUCTIONS FOR TRACTORS WITH
SINGLE FRONT DECK SUSPENSION
BRACKET
STEP 2: (SEE FIGURE 2)
• Removethebrowningshieldfromthefrontofthe
tractorasshown.Holdontotheshieldasyouremove
thesecondscrewtopreventitfromfalling.
• Besuretoreinstallthebrowningshieldwhenso
instructed in step 3.
IDENTIFY YOU TRACTOR
STEP 1: (SEE FIGURE 1)
• Lookunderthefrontofyourtractor.Ifthereisasingle
mowerdecksuspensionbracketlocatedunderneath
themiddleofthefrontaxle,continueontostep
2. If your tractor does not have a mower deck
suspension bracket underneath the middle of the
front axle, skip to step 21 on page 13 for tractors
withdualsuspensionbrackets.
ASSEMBLY

8
STEP 4: (SEE FIGURE 4)
•Assembleashoulderbolt(L)anda3/8"washer(T)to
the outside of R.H. side plate, securing it with a 3/8"
angednut(X).RepeatforL.H.sideplate.
FIGURE 4 RIGHT SIDE VIEW
FIGURE 3 RIGHT SIDE VIEW
5/16"
NYLOCK
NUT (Y)
5/16" x 1"
CARRIAGE BOLT (J) ENGINE MOUNTING
PLATE
(4) 1/2" WASHERS (R)
(3) 3/8" FLANGE NUTS (X)
(3) 3/8" x 1"
CARRIAGE
BOLTS (G)
SEE NOTE
3/8" WASHER (T)
SHOULDER
BOLT (L)
3/8" FLANGED
NUT (X)
INSTALL SIDE PLATES
STEP 3: (SEE FIGURE 3)
• FastentheR.H.SidePlate(bendfacingout)tothe
frontthreeholesinthetractorframeusingthree3/8"
x1"carriagebolts(G),three1/2"washers(R)(see
note)andthree3/8"angenuts(X). For the rear hole,
usea5/16"x1"carriagebolt(J),a1/2"washer(R)
anda5/16"nylocknut(Y). Place the 1/2" washers (R)
betweenthetractorframeandthesideplate.Repeat
for L.H. side plate.
• Reinstallthebrowningshieldontothetractorframe
using the original screws.
NOTE:Ifthereisanenginemountingplate(shownwith
dottedlines)leavethe1/2washerofftheboltthatgoes
through the plate.
INSTALL HANGER BRACKETS AND SHOULDER
BOLTS TO OUTSIDE OF FRAME
STEP 5: (SEE FIGURE 5)
•Removethebolt,ifpresent,intheholedirectlybehind
thebrakerodontheleftsideofthetractorframe.
• AttachtheL.H.HangerBracket(tubefacingout)tothe
holeusinga5/16"x3/4"selfthreadingbolt(F).
• Installaroundheadshoulderbolt(M)intothehole
thatis9-1/2"totherearoftheboltyoujustinstalled.
Secureitwitha3/8"angenut(X)ontheinsideofthe
frame.
FIGURE 5 LEFT SIDE VIEW
5/16" x 3/4" SELF
THREADING BOLT (F)
L.H. HANGER
BRACKET
BRAKE ROD
3/8" FLANGED
NUT (X)
SHOULDER
BOLT (M)
5/16" x 3/4" SELF
THREADING BOLT (F)
R.H. HANGER
BRACKET
RIGHT END OF
BRAKE ROD
3/8" FLANGED
NUT (X)
SHOULDER
BOLT (M)
STEP 6: (SEE FIGURE 6)
•Removethebracket,ifpresent,fromtheholedirectly
behindtheendofthebrakerodontherightsideof
thetractorframe.Storethebracketandbolt.
• AttachtheR.H.HangerBrackettotheholeusinga
5/16"x3/4"selfthreadingbolt(F).
• Installaroundheadshoulderbolt(M)intothehole
thatis9-1/2"totherearoftheboltyoujustinstalled.
Secureitwitha3/8"angenut(X)ontheinsideofthe
frame.
FIGURE 6 RIGHT SIDE VIEW

9
3/8" X 3-1/4"
HEX BOLT
(A)
LARGE SPACER (MM)
PULLEY (NN)
3/8" LOCKWASHER (O)
3/8" HEX LOCK NUT (Z) 3/8"
WASHER (T)
LONG END
OF HUB
STEP 7: (SEE FIGURE 7)
• Attachthepulley(longendofhubfacingdown)and
the large spacer (MM) to the hole shown in the clutch/
idlerassembly.Usea3/8"x3-1/4"hexbolt(A),a3/8"
washer(T),a3/8"lockwasher(O)anda3/8"hexlock
nut (Z).
FIGURE 7
FIGURE 9
STEP 9: (SEE FIGURE 9)
• Attachthecablebrackettotheslotshowninthe
clutch/idlerassemblyusinga5/16"x3/4"carriage
bolt(K)anda5/16"nylocknut(Y).Placetheboltin
thefrontholeofthebracketandintheendoftheslot
closest to the pulley. Do not tighten yet.
CABLE
BRACKET
5/16" x 3/4"
CARRIAGE BOLT (K)
5/16" NYLOCK
NUT (Y)
THIS SECTION IS FOR TRACTORS WITH A
MANUAL ATTACHMENT CLUTCH
If your tractor has an electric attachment clutch go to
step 14 on page 11.
FIGURE 10
HEX BOLTS
(#48138)
DRIVE BELT
FLAT IDLER
PULLEYS
STOP
Didyouselectthecorrectdrivebeltforyour
tractor?Usingthewronglengthbeltmay
causeprematurebearingorbeltfailure.
STEP 10: (SEE FIGURE 10)
• Twodifferentlengthdrivebeltsareincludedwith
yoursnowthrower.Tractorswithmanualattachment
clutchesandsinglefrontdecksuspensionbracketsuse
the56"drivebeltwith#48138 printed on the outside of
thebelt.DO NOT USEtheotherbelt.
• Slightlyloosenthehexboltnexttotheatidlerpulley.
Installthedrivebeltdownbetweenthehexboltandthe
atidlerpulleywiththeatsideofthebeltagainstthe
pulley.Retightenthehexbolt.
• Loopthebeltaroundthelargev-pulley,placingit
betweenthev-pulleyandthehexboltnexttothepulley.
Placethebelttotheinsideoftheotheratidlerpulley.
5/16" NYLOCK
NUT (Y)
5/16" x 3/4"
HEX BOLT (C) TENSIONING CHAIN (JJ)
FIGURE 8
STEP 8: (SEE FIGURE 8)
• Attachthetwosuspensionarmstotherearofthe
clutch/idlerassemblyusingtwo5/16"x3/4"hexbolts
(C)and5/16"nylocknuts(Y)foreacharm.Placethe
armsontheoutsideoftheframewiththenotchesto
the rear.
• Insertatensioningchainthroughtheholeshownand
attachtheendlinktothespringontheloweridlerarm.

10
PIVOT LOCK PIN (GG)
(use this hole)
SHOULDER
BOLT (M)
L.H. HANGER
BRACKET
1/8" HAIRPIN
COTTER (EE)
NYLON TIE (II)
MOWER
CLUTCH
CABLE
FIGURE 12 VIEWED FROM LEFT SIDE
STEP 13: (SEE FIGURE 13)
• Assemblethedrivebeltontotheenginepulleyrst
and then onto the large pulley on top of the clutch/
idlerassembly.Thebeltmustbeplacedinsidethe
enginepulleybeltkeeper(s)andbetweenthelarge
pulleyandthekeeperboltnexttoit.
IMPORTANT: Do Notassemblethe"V"beltoutsideof
theenginepulleykeepersoroutsideofthekeeperbolt
next to the large pulley.
• Go to step 48 on page 21.
FIGURE 13 VIEWED FROM UNDERNEATH
ENGINE
PULLEY
ENGINE
PULLEY
Left Side
of Tractor
ENGINE
PULLEY
KEEPER
ENGINE
PULLEY
KEEPER
KEEPER BOLT
IDLER
PULLEY
CLUTCH/IDLER ASSEMBLY
FIGURE 11
5/64" HAIR
COTTER PIN
SPACER
1/4" WASHER
TRACTOR'S
CLUTCH CABLE
CABLE
BRACKET GROOVE
5/64" HAIR
COTTER PIN (DD)
1/4" WASHER (P)
SPACER (LL)
TRACTOR'S
CLUTCH CABLE
CABLE
BRACKET
5/64" HAIR
COTTER PIN (DD)
ATTACH CLUTCH IDLER ASSEMBLY TO TRACTOR
STEP 12: (SEE FIGURE 12)
• Attachtheclutch/idlerassemblytothetractorframe.
Hookthenotchedsuspensionarmsontothetwo
shoulderbolts(M)assembledtotheoutsideofthe
tractorframe.Liftthefrontoftheassemblyandattach
ittotheR.H.andL.H.hangerbracketsusingtwopivot
lockpins(GG)and1/8"hairpincotters(EE).
• Looselyattachthemowerclutchcabletotheleftside
ofthetractorframewithanylontie(II).Do not pull
thenylontiecompletelytight.Thecablemayneedto
beremovedfromthenylontiewhenusingthemower
deck.
STEP 11: (SEE FIGURE 11)
• Findthecableclipthatisattachedtotheleftside
ofthetractorframeunderneaththefootrest.Open
theclipandremovethemowerclutchcable.Do not
removetheclipfromthetractorframe.Thecable
reattachestotheclipwhenusingthemowerdeck.
• Movetheattachmentclutchleveronthedashpanelto
the disengaged position.
• Placetheclutch/idlerassemblyontheoorontheleft
side of the tractor.
• Attachthetractor'smowerclutchcabletothecable
bracketontheclutch/idlerassembly.Securethecable
housingguide(groovedown)tothecablebracket
using the original collar and a 5/64" hair cotter pin (DD).
• Placeaspacer(LL)ontheweldedpinontheidler
arm.Hooktheendoftheclutchcablespringoverthe
pin and secure it with a 1/4" washer (P) and a 5/64"
hair cotter pin (DD).
• Aligncablebracketwithweldedpinandtightenthe
nutassembledinstep9.