
FormNo.3367-150RevA
®
TimeCutter
ModelNo.74433—SerialNo.311000001andUp
ZD420RidingMower
Registeratwww.T oro.com.OriginalInstructions(EN)

OrderingReplacementParts
Toorderreplacementparts,pleasesupplythepartnumber,
thequantity ,andthedescriptionofeachpartdesired.
UnderstandingReferenceNumbers
Eachidentiedpartinanillustrationhasareference
number.Thereferencenumberforapartalsoappearsin
thepartslist,alongwithotherinformationaboutthepart.
Thiscatalogusestwospecialreferencenumberformats,
onetoindicatepartsinaserviceassemblyandanotherto
indicatethequantityofagivenpartinanillustration.
ServiceAssemblyReferenceNumbers
Partsinserviceassemblieshavereferencenumbersinthe
forma:b.Thearepresentsthereferencenumberofthe
entireserviceassemblyandthebrepresentsasequential
numberuniquetoeachpartwithintheserviceassembly.
ListofAbbreviations
AR:asrequired
ASM:assembly
BBC:bladebrakecontrol
BHTF:buttonheadthreadforming
CARR:carriage
CCW:counterclockwise
CW:clockwise
DEG:degrees
DPA:DualPointAdjustment
ECM:electroniccontrolmodule
EXT:external
FH:athead
GA:gauge
HD:heavy-duty
HF:hexange
HH:hexhead
HHF:hexheadange
HHFTF:hexheadangethread
forming
HJ:hexjam
HLH:hexlaghead
HOC:height-of-cut
HSBH:hexsocketbuttonhead
HSFH:hexsocketathead
HSH:hexsockethead
HWH:hexwasherhead
HWHTF:hexwasherheadthread
forming
HYD:hydraulic
LH:lefthand
LP:LiquidPropane
NI:nyloninsert
NPTF:nationalpipethreadne
PFH:phillipsathead
PPH:phillipspanhead
PPHTF:phillipspanheadthread
forming
PRH:phillipsroundhead
PTH:phillipstrusshead
PTO:power-take-off
RH:righthand
ROPS:roll-overprotectionsystem
Forexample,awheelassemblymightbeidentiedby
referencenumber6,thetireby6:1,thevalveby6:2,and
thewheelby6:3.Whenyouordertheassemblyidentied
byreferencenumber6,youreceiveallpartsidentiedby
referencenumbers6:1,6:2,and6:3.However,youmay
alsoorderanypartindividually.Referencenumbersofthis
typeappearinillustrationandinpartslists.
ReferenceNumbersIndicatingQuantity
Inanillustration,ifareferencenumberindicatesmorethan
onepart,thereferencenumberhastheformnXy .Then
representsthequantityofthepart,theXisthemultiplication
symbol,andtheyrepresentsthereferencenumber.
Forexample,inanillustration,thereferencenumber2X37
meansthattwoofthepartsidentiedbyreferencenumber
37areindicated.
RRB:rearrollerbrush
SFH:slottedllisterhead
SHH:slottedhexhead
SHWH:slottedhexwasherhead
SPH:slottedpanhead
SQH:squarehead
SRH:slottedroundhead
STD:standard
TAP:selftapping
TTH:torxtrusshead
©2010—TheToro®Company
8111LyndaleAvenueSouth
Bloomington,MN55420
Contactusatwww.Toro.com.
2
PrintedintheUSA.
AllRightsReserved

Contents
FrameAssembly............................................................................................4
SeatAssembly.............................................................................................5
ControlAssembly...........................................................................................6
DriveAssembly.............................................................................................7
LHHydroTransaxleAssemblyNo.1 12-4760...................................................................8
RHHydroTransaxleAssemblyNo.1 12-4761..................................................................10
Engine,MuferandClutchAssembly.........................................................................12
StylingAssembly..........................................................................................13
BaggingAssembly.........................................................................................14
42InchTopDeckAssembly.................................................................................15
42InchBottomDeckAssembly..............................................................................16
SpindleAssemblyNo.107-9161.............................................................................17
ElectricalAssembly........................................................................................18
AttachmentsandAccessories...............................................................................19
3

FrameAssembly
Ref.
PartNumber
Qty.Description
1107-8999-011Frame
4323-44
5
3229-14
6105-34392
7
3296-424Nut-Lock,NI
81-6331022
93290-3574Nut-HHF,Whiz
10114-3601-031
11106-22221
12105-34601Pad-Antiskid
13105-34712
13:1105-19431Tire
13:2302-51
13:3232-271
13:5114-16402Bushing-Flange
13:9993-42441
14104-36672
15325-222
1632128-232Nut-HF
17110-6581-012
Screw-HH
Screw-CARR
Bracket-Lift
Bearing-Flange,Side
LiftArmASM
Spacer
FrontWheelAndTireASM
Fitting-Grease
Stem-Valve
Tube-Inner(W/Valve)
Spanner-Wheel
Screw-HH
CasterForkASM
Ref.
PartNumber
Qty.Description
183296-399Nut-Lock,NI
193-64982Washer-Thrust
20105-6986-011
21105-6985-011
22302-52
Caster-LH
Caster-RH
Fitting-Grease
●
2328-24802Washer-Plain
2432151-1032Ring-Retaining,EXT
2561-97802
26323-1810
Cap-Hub
Screw-HH
273256-248Washer-Flat
28105-34501
29108-2317-031
30106-87431
Grip-Lever,Lift
Lever-Lift
Decal-HOC
3198-59752Washer-Belleville
■
33106-70431Decal-Transport
32106-22111
Block-Lift
34114-3665-031Holder-Battery
35322-32
Screw-HH
363296-292Nut-Lock,NI
●
Notillustrated
3367-150A402
■
OptionalEquipment

SeatAssembly
Ref.
PartNumber
13296-424Nut-Lock,NI
23256-236Washer-Flat
33296-2912Nut-Lock,NI
4322-414
5
106-2158-031
6106-2159-031
7
106-22231
8321-44
9106-21802Bracket-Bellcrank
10114-3664-031
11106-22402Knob
125-44602Washer-Pivot
13105-70041E-Ring
14114-9436-031
15108-23291
16105-69551Pin-Pivot
176135292
187011782
1932128-252Nut-HF
2092-70542
21107-49024
22114-9418-031
23112-75631
Qty.Description
Screw-HH
RHPlateASM
LHPlateASM
Decal-HOC
Screw-HH
Brace-Seat
Bracket-Seat
Seat
Screw-Shoulder
Cap-Protector
Spring-Compression
Spacer-Nylon
Bracket-Stop,Seat
Decal-Service,Ce
0353367-150A

ControlAssembly
Ref.
PartNumber
1108-87921Rod-Brake,LH
2110-10411Rod-Brake,RH
3105-34816Washer-Thrust
5
110-18691
5:2105-34554Bushing
5:33217-62Nut-Hex
5:4105-34861
6110-18701
6:2105-34554Bushing
6:33217-62Nut-Hex
6:4105-34861
7
105-34881
8105-34871
93296-532Nut-Lock,NI
103256-242Washer-Flat
113296-592Nut-Lock,NI
12107-48742Eccentric
13321-92
14103-29132
15106-21812Bellcrank
161-8060032
Qty.Description
LHActivatorArmASM
Stop-Adjustment
RHActivatorArmASM
Stop-Adjustment
LHPivotShaftASM
RHPivotShaftASM
Screw-HH
Damper-Control,Motion
Pin-Cotter,Hair
Ref.
28:21-6332571
29:21-6332571
PartNumber
17106-87422Decal
1832128-252Nut-HF
193256-2211Washer-Flat
20321-44
213296-429Nut-Lock,NI
22106-21792Link-Brake
231-5430172Balljoint-RH
24105-70482Rod-Hydro
253219-22Nut-Hex
26322-62
2732128-204Nut-HF
28108-87461
29108-87471
30105-34692
31106-22144
32105-34651
3337-87714
343296-22Nut-Lock,NI
353274-522
Qty.Description
Screw-HH
Screw-HH
RHControlHandleASM
Grip-Control,Motion
LHControlHandleASM
Grip-Control,Motion
Spring-Compression
Bolt-Shoulder
Spring-Compression
Bolt-Shoulder
Screw-HSH
3367-150A604