Toro 74437 Parts Catalogue

PartsCatalog

FormNo.3361-792RevB

TimeCutter™ZD420TRiding
Mower

ModelNo.74437—SerialNo.290000001andUp

Registeratwww.T oro.com.OriginalInstructions(EN)

OrderingReplacementParts

Toorderreplacementparts,pleasesupplythepartnumber,
thequantity ,andthedescriptionofeachpartdesired.

UnderstandingReferenceNumbers

Eachidentiedpartinanillustrationhasareference
number.Thereferencenumberforapartalsoappearsin
thepartslist,alongwithotherinformationaboutthepart.

Thiscatalogusestwospecialreferencenumberformats,
onetoindicatepartsinaserviceassemblyandanotherto
indicatethequantityofagivenpartinanillustration.

ServiceAssemblyReferenceNumbers

Partsinserviceassemblieshavereferencenumbersinthe
forma:b.Thearepresentsthereferencenumberofthe
entireserviceassemblyandthebrepresentsasequential
numberuniquetoeachpartwithintheserviceassembly.

ListofAbbreviations

AR:asrequired

ASM:assembly

BBC:bladebrakeclutch

CARR:carriage

CCW:counterclockwise

CW:clockwise

DEG:degrees

ECM:electroniccontrolmodule

EXT:external

FH:athead

GA:gauge

HD:heavy-duty

HF:hexange

HH:hexhead

HHF:hexheadange

HHFTF:hexheadangethread

forming

HJ:hexjam

HLH:hexlaghead

HOC:height-of-cut

HSBH:hexsocketbuttonhead

HSFH:hexsocketathead

HSH:hexsockethead

HWH:hexwasherhead

HWHTF:hexwasherheadthread

forming

HYD:hydraulic

LH:lefthand

NI:nyloninsert

NPTF:nationalpipethreadne

PFH:phillipsathead

PPH:phillipspanhead

PPHTF:phillipspanheadthread

forming

PRH:phillipsroundhead

PTH:phillipstrusshead

PTO:power-take-off

RH:righthand

ROPS:roll-overprotectionsystem

RRB:rearrollerbrush

Forexample,awheelassemblymightbeidentiedby
referencenumber6,thetireby6:1,thevalveby6:2,and
thewheelby6:3.Whenyouordertheassemblyidentied
byreferencenumber6,youreceiveallpartsidentiedby
referencenumbers6:1,6:2,and6:3.However,youmay
alsoorderanypartindividually.Referencenumbersofthis
typeappearinillustrationandinpartslists.

ReferenceNumbersIndicatingQuantity

Inanillustration,ifareferencenumberindicatesmorethan
onepart,thereferencenumberhastheformnXy .Then
representsthequantityofthepart,theXisthemultiplication
symbol,andtheyrepresentsthereferencenumber.

Forexample,inanillustration,thereferencenumber2X37
meansthattwoofthepartsidentiedbyreferencenumber
37areindicated.

SFH:slottedllisterhead

SHH:slottedhexhead

SHWH:slottedhexwasherhead

SPH:slottedpanhead

SQH:squarehead

SRH:slottedroundhead

STD:standard

TAP:selftapping

TTH:torxtrusshead

©2009—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.112-4761..................................................................10

StylingAssembly..........................................................................................12

BaggingAssembly.........................................................................................13

42InchTopDeckAssembly.................................................................................14

42InchBottomDeckAssembly..............................................................................16

SpindleAssemblyNo.107-9161.............................................................................17

EngineandFuelT ankAssembly.............................................................................18

ElectricalAssembly........................................................................................19

CylinderandCrankcaseAssemblyKawasakiFH541V -CS50.....................................................20

PistonandCrankshaftAssemblyKawasakiFH541V-CS50.......................................................21

ValveandCamshaftAssemblyKawasakiFH541V -CS50........................................................22

LubricationEquipmentAssemblyKawasakiFH541V-CS50......................................................23

CoolingEquipmentAssemblyKawasakiFH541V-CS50.........................................................24

ElectricEquipmentAssemblyKawasakiFH541V-CS50.........................................................25

ControlEquipmentAssemblyKawasakiFH541V-CS50..........................................................26

CarburetorAssemblyKawasakiFH541V-CS50................................................................27

AirFilterandMuferAssemblyKawasakiFH541V-CS50........................................................28

FuelT ankandV alveAssemblyKawasakiFH541V-CS50........................................................29

StarterAssemblyKawasakiFH541V-CS50....................................................................30

LabelAssemblyKawasakiFH541V-CS50.....................................................................31

AttachmentsandAccessories...............................................................................32

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
Castor-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

Grip-Lever,Lift

Lever-Lift
30106-87431Decal
3198-59752Washer-Belleville

●

33106-70431Decal-Transport

32106-22111

Block-Lift

34114-3665-031Holder-Battery
35322-32

Screw-HH
363296-292Nut-Lock,NI

●

Notillustrated

3361-792B42

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

353361-792B

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

3361-792B64

DriveAssembly

Ref.

PartNumber

Qty.Description

1112-47611Transaxle-Hydro,RH
2112-47601Transaxle-Hydro,LH
3106-21742V-Belt
495-38052
5

105-70491

Spring

Bracket-Spring
6242-508Nut-Lug
7

105-70472Arm-Idler
8106-21762Pulley-Idler
932128-251Nut-HF

1037-87712

Bolt-Shoulder
113256-32Washer-Flat
12108-8733-031
13106-70042

HydroFrameASM

WheelAndTireASM

13:1242-761Rim
13:2106-70061Tire
13:3232-271

Stem-Valve

13:99107-24911Tube-Tire

Ref.

PartNumber

Qty.Description

143256-12Washer-Flat
15107-8970-031
16322-204
17322-13

Brace-Frame,LeftSide
Screw-HH

5

Screw-HH
183256-2326Washer-Flat
193296-2927Nut-Lock,NI
20322-72
215-4460
22107-24641Arm-Bypass,RH

Screw-HH

5

Washer-Pivot

●

23107-24631Arm-Bypass,LH
24112-4754-032Anchor-Damper
253217-61Nut-Hex
26322-514
27322-92
28105-7039-032
291-8060032

●

Screw-HH

Screw-HH

Support-Hydro

Pin-Cotter,Hair

●

Notillustrated

573361-792B

LHHydroTransaxleAssemblyNo.112-4760

Ref.

PartNumber

1106-86951
2106-86961

Qty.Description

RHMainHousingASM

RHSideASM
3110-85601Plate-Bypass
4110-85611
5

103-26661
6104-21891
7

104-21702Pin
8104-530516
9112-98511

PumpBlockASM
CylinderBlockKit
Plug-Thread,Straight

Screw-HHF

BrakeSealKit
1094-69263Bolt
11106-86761

Seal-Lip
12106-86772Ring-Retaining,EXT
13106-86781Rod-Bypass
14106-86791Ring-Retaining,Int
15107-24901Arm-Bypass
16106-86811Ring-Retaining,EXT
17104-53041
18104-53131
19104-21161

Swashplate-Trunnion

Seal-Lip

Stud
20112-98531Puck-Friction
21106-87471

Arm-Control
225-44601Washer-Pivot
23107-24881

Screw
24105-18721Nut
2594-19361

Spring-Block
2694-19371Washer-Thrust,Block

●

Notillustrated

Ref.

PartNumber

27104-53061

Qty.Description

Shaft-Input
28104-53111Bearing-Ball
29104-53071Ring-Retaining
30104-53081
31104-53101

Spacer

Seal-Lip
32104-53092Ring-Retaining
3394-69222Bearing-Thrust
34104-53391Washer-Flat
35104-53401Ring-Retaining
36104-53161
37106-86831
38104-53601

Gear-Pinnion,13T

Shaft-Motor

Washer-Shaft,Motor
3994-19332Washer
40104-53171
41104-53181
42104-53291
43112-98541
44112-98551

Gear

Gear-Jackshaft,10T

Pin-Jackshaft

Ring-Spiral,Retaining

Gear-52T,Bull
45112-98561Washer
46112-98571
47112-98581

Bearing-Sleeve

Shaft-Axle
48112-98591Bushing-Axle
49112-98601
50106-86861

Seal-Lip

SealKit

●

51106-86971RHExpansionPlateKit
52106-86981FanPulleyKit

3361-792B8A1

LHHydroTransaxleAssemblyNo.112-4760(continued)

Ref.

PartNumber

Qty.Description

53106-86881BrakeArmKit
54112-98611
55

104-21471

RHCenterSectionFilterKit

Sealant
56107-24891BypassArmKit
57

106-86931FilterKit
58110-85631Nut-Lock,HH
59106-86941
60112-98641Hose

Disc-Brake,Cog

●

Ref.

PartNumber

61108-85621

Qty.Description

Pinch-Clamp,SingleEar

●

62110-85661Fan-6Inch,10Blade

●

63104-17541Pulley
64105-18751Nut-Lock
65107-91221
66105-18941

Washer-Slotted
HubASM

67112-98661BreatherKit

●

Notillustrated

A193361-792B

RHHydroTransaxleAssemblyNo.112-4761

Ref.

PartNumber

1106-86741
2106-86751

Qty.Description

LHMainHousingASM

LHSideASM
3110-85601Plate-Bypass
4110-85611
5

103-26661
6104-21891
7

104-21702Pin
8104-530516
9112-98511

PumpBlockASM
CylinderBlockKit
Plug-Thread,Straight

Screw-HHF

BrakeSealKit
1094-69263Bolt
11106-86761

Seal-Lip
12106-86772Ring-Retaining,EXT
13106-86781Rod-Bypass
14106-86791Ring-Retaining,Int
15112-98521Arm-Bypass
16106-86811Ring-Retaining,EXT
17104-53041
18104-53131
19104-21161

Swashplate-Trunnion

Seal-Lip

Stud
20112-98531Puck-Friction
21106-87471

Arm-Control
225-44601Washer-Pivot
23107-24881

Screw
24105-18721Nut
2594-19361

Spring-Block
2694-19371Washer-Thrust,Block

●

Notillustrated

Ref.

PartNumber

27104-53061

Qty.Description

Shaft-Input
28104-53111Bearing-Ball
29104-53071Ring-Retaining
30104-53081
31104-53101

Spacer

Seal-Lip
32104-53092Ring-Retaining
3394-69222Bearing-Thrust
34104-53391Washer-Flat
35104-53401Ring-Retaining
36104-53161
37106-86831
38104-53601

Gear-Pinnion,13T

Shaft-Motor

Washer-Shaft,Motor
3994-19331Washer
40104-53171
41104-53181
42104-53291
43112-98541
44112-98551

Gear

Gear-Jackshaft,10T

Pin-Jackshaft

Ring-Spiral,Retaining

Gear-52T,Bull
45112-98561Washer
46112-98571
47112-98581

Bearing-Sleeve

Shaft-Axle
48112-98591Bushing-Axle
49112-98601
50106-86861

Seal-Lip

SealKit

●

51106-86871LHExpansionPlateKit
52105-19281FanPulleyKit

3361-792B10A2

RHHydroTransaxleAssemblyNo.112-4761(continued)

Ref.

PartNumber

Qty.Description

53106-86881BrakeArmKit
54112-98621
55

104-21471

LHCenterSectionFilterKit

Sealant
56107-24891BypassArmKit
57

106-86931FilterKit
58105-18951Nut
59106-86941
60112-98651Hose

Disc-Brake,Cog

●

Ref.

PartNumber

61108-85621

Qty.Description

Pinch-Clamp,SingleEar

●

62105-19271Fan

●

63105-18961Pulley
64105-18751Nut-Lock
65104-21203
66105-18941

Screw
HubASM

67112-98661BreatherKit

●

Notillustrated

A2113361-792B