Toro 74420 Parts Catalogue

Form Number 3356-862 Rev B

TimeCutter

Riding Mower

Model No. 74420 - 270000001 and up.

Parts Catalog

™

Z420

Ordering Replacement Parts

To order replacement parts, please supply the part
number, the quantity, and the description of each part
desired.

Understanding Reference Numbers

Each Identified part in an illustration has a reference
number. The reference number for a part also
appears in the parts list, along with other information
about the part.

This catalog uses two special reference number
formats, one to indicate parts in a service assembly
and another to indicate the quantity of a given part in
an illustration.

Service Assembly Reference Numbers

Parts in service assemblies have reference numbers
in the form a:b. The a represents the reference
number of the entire service assembly and the b
represents a sequential number unique to each part
within the service assembly.

© The Toro Company - 2007

Register your product at www.Toro.com

All Rights Reserved

For example, a wheel assembly might be identified
by reference number 6, the tire by 6:1, the valve by
6:2, and the wheel by 6:3. When you order the
assembly identified by reference number 6, you
receive all parts identified by reference numbers 6:1,
6:2, and 6:3. However, you may also order any part
individually. Reference numbers of this type appear
in illustrations and in part lists.

Reference Numbers Indicating Quantity

In an illustration, if a reference number indicates
more than one part, the reference number has the
form nX y. The n represents the quantity of the part,
the X is the multiplication symbol, and the y
represents the reference number.

For example, in an illustration, the reference number
2X 37 means that two of the parts identified by
reference number 37 are indicated.

Contents

Description Page

. . . . . . 3Frame Assembly

. . . . . . 4Seat Assembly

. . . . . . 5Control Assembly

. . . . . . 6Hydro and Belt Drive Assembly

. . . . . . 7RH Hydro Transaxle Assembly No. 112-4761

. . . . . . 9LH Hydro Transaxle Assembly No. 112-4760

. . . . . . 11Engine Assembly

. . . . . . 12Styling Assembly

. . . . . . 1342in Deck Assembly

. . . . . . 1442in Deck Assembly No. 110-1890

. . . . . . 15Deflector Assembly No. 93-7695

. . . . . . 16Recycler Assembly

. . . . . . 17Spindle and Belt Drive Assembly

. . . . . . 18Electrical Assembly

Cylinder Assembly Briggs and Stratton
31P777-0125-E1

Cylinder Head Assembly Briggs and Stratton
31P777-0125-E1

Crankshaft Assembly Briggs and Stratton
31P777-0125-E1

. . . . . . 19

. . . . . . 20

. . . . . . 21

Description Page

Crankcase Assembly Briggs and Stratton
31P777-0125-E1

Oil Filter, Tube and Pump Assembly Briggs
and Stratton 31P777-0125-E1

Carburetor Assembly (Keihin) Briggs and
Stratton 31P777-0125-E1

Carburetor Assembly (Nikki) Briggs and
Stratton 31P777-0125-E1

Governor Assembly Briggs and Stratt on
31P777-0125-E1

Blower Housing Assembly Briggs and Stratton
31P777-0125-E1

Starter Assembly Briggs and Stratton 31P777­0125-E1

Gasket Kit Briggs and Stratton 31P777-0125­E1

Carburetor Overhaul Kit (Keihin) Briggs and
Stratton 31P777-0125-E1

Carburetor Overhaul Kit (Nikki) Briggs and
Stratton 31P777-0125-E1

. . . . . . 22

. . . . . . 23

. . . . . . 24

. . . . . . 25

. . . . . . 26

. . . . . . 27

. . . . . . 28

. . . . . . 29

. . . . . . 30

. . . . . . 31

. . . . . . 32Attachments and Accessories List

Part Description Abbreviations

Part descriptions in this catalog may include the following abbreviations.

AR. . . . . . . . . . . . . . .as required

ASM. . . . . . . . . . . . . assembly

BBC. . . . . . . . . . . . . blade brake clutch

CARR. . . . . . . . . . . . carriage

DEG. . . . . . . . . . . . . degrees

EXT. . . . . . . . . . . . . .external

FH. . . . . . . . . . . . . . .flat head

GA. . . . . . . . . . . . . . .gauge

HD. . . . . . . . . . . . . . .heavy-duty

HF. . . . . . . . . . . . . . . hex flange

HH. . . . . . . . . . . . . . .hex head

HHF. . . . . . . . . . . . . hex head flange

HHFTF. . . . . . . . . . . hex head flange thread forming

HJ. . . . . . . . . . . . . . . hex jam

HLH. . . . . . . . . . . . . .hex lag head

HOC. . . . . . . . . . . . . height-of-cut

HSBH. . . . . . . . . . . . hex socket button head

HSFH. . . . . . . . . . . . hex socket flat head

HSH. . . . . . . . . . . . . hex socket head

HWH. . . . . . . . . . . . . hex washer head

HWHTF. . . . . . . . . . .hex washer head thread

forming

HYD. . . . . . . . . . . . . hydraulic

LH. . . . . . . . . . . . . . . left hand

NI. . . . . . . . . . . . . . . nylon insert

NPTF. . . . . . . . . . . . national pipe thread fine

PFH. . . . . . . . . . . . . .phillips flat head

PPH. . . . . . . . . . . . . phillips pan head

PPHTF. . . . . . . . . . . phillips pan head thread

PRH. . . . . . . . . . . . . phillips round head

PTH. . . . . . . . . . . . . .phillips truss head

PTO. . . . . . . . . . . . . power-take-off

RH. . . . . . . . . . . . . . .right hand

ROPS. . . . . . . . . . . . roll-over protection system

SFH. . . . . . . . . . . . . .slotted fillister head

SHH. . . . . . . . . . . . . slotted hex head

SHWH. . . . . . . . . . . .slotted hex washer head

SPH. . . . . . . . . . . . . slotted pan head

SQH. . . . . . . . . . . . . square head

SRH. . . . . . . . . . . . . slotted round head

STD. . . . . . . . . . . . . .standard

TAP. . . . . . . . . . . . . .self tapping

TTH. . . . . . . . . . . . . .torx truss head

forming

Footnotes

n

Not illustrated

p

Obtain from your local Briggs & Stratton dealer

r

Included in Engine Gasket Set (Ref. No. 358)

t

Included in Valve Gasket Set (Ref. No. 1095)

v

For Service of Nikki Carburetors

o

Not serviced separately

q

Included in Carburetor Overhaul Kit (Ref. No. 121)

s

Included in Carburetor Gasket Set (Ref. No. 977)

u

For Service with Keihin Carburetors

w

Included in Carburetor Overhaul Kit (Ref. No. 121A)

2

3356-862 Rev B

Ref Part No. Qty. Description

Frame1

108-2325-01
323-4
3229-1
105-3439
3296-42
1-633102
3290-357
105-3499-03
106-2222
105-3460
105-3471
105-1943
302-5
232-27
114-1640

n

93-4244
104-3667
325-22
32128-23
110-6581-01
3296-39
3-6498
105-6986-01
105-6985-01

1

Screw-HH3

4

Screw-CARR4

4

Bracket-Lift5

2

Nut-Lock, NI6

4

Bearing-Flange, Side7

2

Nut-HHF, Whiz8

4

Lift Arm ASM9

1

Spacer10

1

Pad-Antiskid11

1

Front Wheel And Tire ASM12

2

Tire12:1

1

Fitting-Grease12:2

1

Stem-Valve12:3

1

Bushing-Flange12:5

2

Tube-Inner (W/Valve)12:99

1

Spanner-Wheel13

2

Screw-HH14

2

Nut-HF15

2

Caster Fork ASM16

2

Nut-Lock, NI17

9

Washer-Thrust18

2

Caster-LH19

1

Castor-RH20

1

Frame Assembly

Ref Part No. Qty. Description

302-5
28-2480
32151-103
61-9780
323-18
3256-24
105-3450
108-2317-03
106-8743
98-5975
106-2211
108-6109

10

2

Fitting-Grease21
Washer22

2

Ring-Snap23

2

Cap-Hub24

2

Screw-HH25
Washer-Flat26

8

Grip-Lever, Lift27

1

Lever-Lift28

1

Decal29

1

Washer-Belleville30

2

Block-Lift31

1

Decal-Transport, Ce32

1

3

3356-862 Rev B

3

Ref Part No. Qty. Description

Nut-Lock, NI1

12
14

4

Washer-Flat2

6

Nut-Lock, NI3
Screw-HH4
RH Plate ASM5

1

LH Plate ASM6

1

Decal-HOC7

1

Screw-HH8

4

Bracket-Bellcrank9

2

Brace-Seat, Front10

1

Knob11

2

Washer-Pivot12

2

E-Ring13

1

Bracket-Seat14

1

Seat-18 Inch15

1

Decal-Service16

1

Pin-Pivot17

1

Screw Shoulder18

2

Cap-Protector19

2

Nut-HF20

2

Spring-Compression21

2

Brace-Seat, Rear22

1

Strap-Tie23

1

Spacer-Nylon24

4

3296-42
3256-23
3296-29
322-4
106-2158-03
106-2159-03
106-2223
321-4
106-2180
105-6954-03
106-2240
5-4460
105-7004
105-6953-03
110-6772
106-8717
105-6955
613529
701178
32128-25
92-7054
108-2358-03
614249
107-4902

4

Seat Assembly

4

3356-862 Rev B

Ref Part No. Qty. Description

n

n

n

n

n

n

105-7045
105-7044
105-3481
110-1869
105-3455
3217-6
105-3486
110-1870
105-3455
3217-6
105-3486
105-3488
105-3487
3296-53
3256-24
3296-59
107-4874
321-9
103-2913
106-2181
1-806003
3256-22
321-4
3296-42

12

Rod-Brake, LH1

1

Rod-Brake, RH2

1

Washer-Thrust3

6

LH Activator Arm ASM4

1

Bushing4:2

4

Nut-Hex4:3

2

Stop-Adjustment4:4

1

RH Activator Arm ASM5

1

Bushing5:2

4

Nut-Hex5:3

2

Stop-Adjustment5:4

1

LH Pivot Shaft ASM6

1

RH Pivot Shaft ASM7

1

Nut-Lock, NI8

2

Washer-Flat9

2

Nut-Lock, NI10

2

Eccentric11

2

Screw-HH12

2

Damper-Control, Motion13

2

Bellcrank14

2

Pin-Hair15

2

Washer-Flat16
Screw-HH17

4
8

Nut-Lock, NI18

Control Assembly

Ref Part No. Qty. Description

106-2179
1-543017
105-7048
3219-2
322-6
32128-20
106-2242
1-633257
105-3469
106-2214
105-3465
37-8771
3296-2
3274-52
106-8742
32128-25

Link-Brake19

2

Balljoint-RH20

2

Rod-Hydro21

2

Nut-Hex22

2

Screw-HH23

2

Nut-HF24

4

Handle ASM25

2

Grip-Control, Motion25:2

1

Spring-Compression26

2

Bolt-Shoulder27

4

Spring-Compression28

2

Bolt-Shoulder29

4

Nut-Lock30

2

Screw-HSH31

2

Decal32

2

Nut-HF33

2

5

3356-862 Rev B

5

Hydro and Belt Drive Assembly

Ref Part No. Qty. Description

Transaxle-Hydro, LH1

18
18

1

Transaxle-Hydro, RH2

1

V-Belt3

2

Spring4

2

Arm-Idler5

2

Pulley-Idler6

2

Nut-HF7

1

Bolt-Shoulder8

2

Washer-Flat9

2

Hydro Mount ASM10

1

Wheel And Tire ASM11

2

Rim11:1

1

Tire11:2

1

Stem-Valve11:3

1

Tube-Tire11:99

1

Washer-Flat12

2

Screw-HH13

4

Screw-HH14

4

Washer-Flat15
Nut-Lock, NI16
Screw-HH17

2

Washer-Pivot18

5

Nut-Lug19

8

Screw-HH20

6

112-4760
112-4761
106-2174
95-3805
105-7047
106-2176
32128-25
37-8770
3256-3
107-4878-03
106-7004
242-76
106-7006
232-27

n

107-2491
3256-1
322-20
322-13
3256-23
3296-29
322-7
5-4460
242-50
322-5

6

Ref Part No. Qty. Description

2

322-13
105-7039-03
107-4875
1-806003
3217-6

Screw-HH21
Support-Hydro22

2

Rod-Bypass23

2

Pin-Hair24

2

Nut-Hex25

2

A1

3356-862 Rev B

RH Hydro Transaxle Assembly No. 112-4761

Ref Part No. Qty. Description

LH Main Housing ASM1

16

1

LH Side ASM2

1

Plate-Bypass3

1

Pump Block ASM4

1

Cylinder Block ASM5

1

Plug6

1

Pin7

2

Screw-HHF8
Brake Seal Kit9

1

Bolt10

3

Seal-Lip11

1

Ring-Retaining, EXT12

2

Rod-Bypass13

1

Ring-Retaining, Int14

1

Arm-Bypass15

1

Ring-Retaining, EXT16

1

Swashplate-Trunnion17

1

Seal-Lip18

1

Stud19

1

Puck-Friction20

1

Arm-Control21

1

Washer-Pivot22

1

Screw23

1

Nut24

1

106-8674
106-8675
110-8560
110-8561
104-2106
112-9850
104-2170
104-5305
112-9851
94-6926
106-8676
106-8677
106-8678
106-8679
112-9852
106-8681
104-5304
104-5313
104-2116
112-9853
106-8747
5-4460
107-2488
105-1872

Ref Part No. Qty. Description

1

94-1936
94-1937
104-5306
104-5311
104-5307
104-5308
104-5310
104-5309
94-6922
104-5339
104-5340
104-5316
106-8683
104-5360
94-1933
104-5317
104-5318
104-5329
112-9854
112-9855
112-9856
112-9857
112-9858
112-9859

Spring-Block25
Washer-Block, Thrust26

1

Shaft-Input27

1

Bearing-Ball28

1

Ring-Retaining29

1

Spacer30

1

Seal-Lip31

1

Ring-Retaining32

2

Bearing-Thrust33

2

Washer-Flat34

1

Ring-Retaining35

1

Gear-Pinnion, 13T36

1

Shaft-Motor37

1

Washer-Shaft, Motor38

1

Washer39

1

Gear40

1

Gear-Jackshaft, 10T41

1

Pin-Jackshaft42

1

Ring-Spiral, Retaining43

1

Gear-52T Bull44

1

Washer45

1

Bearing-Sleeve46

1

Shaft-Axle47

1

Bushing-Axle48

1

7

3356-862 Rev B

A1

RH Hydro Transaxle Assembly No. 112-4761 (continued)

Ref Part No. Qty. Description

Seal-Lip49

112-9860

n

n

n

n

106-8686
106-8687
105-1928
106-8688
112-9862
112-9863
107-2489
106-8693
105-1895
106-8694
112-9865
108-8562
105-1927
105-1896
105-1875
104-2120
105-1894
112-9866

1

Seal Kit50

1

LH Expansion Plate Kit51

1

Fan Pulley Kit52

1

Brake Arm Kit53

1

LH Center Section Filter Kit54

1

Tube-Sealant55

1

Bypass Arm Kit56

1

Filter Kit57

1

Nut58

1

Disc-Brake, Cog59

1

Hose60

1

Pinch-Clamp, Single Ear61

1

Fan62

1

Pulley63

1

Nut-Lock64

1

Screw65

3

Hub ASM66

1

Breather Kit67

1

8

A2

3356-862 Rev B

LH Hydro Transaxle Assembly No. 112-4760

Ref Part No. Qty. Description

RH Main Housing ASM1

16

1

RH Side ASM2

1

Plate-Bypass3

1

Pump Block ASM4

1

Cylinder Block ASM5

1

Plug6

1

Pin7

2

Screw-HHF8
Brake Seal Kit9

1

Bolt10

3

Seal-Lip11

1

Ring-Retaining, EXT12

2

Rod-Bypass13

1

Ring-Retaining, Int14

1

Arm-Bypass15

1

Ring-Retaining, EXT16

1

Swashplate-Trunnion17

1

Seal-Lip18

1

Stud19

1

Puck-Friction20

1

Arm-Control21

1

Washer-Pivot22

1

Screw23

1

Nut24

1

106-8695
106-8696
110-8560
110-8561
104-2106
112-9850
104-2170
104-5305
112-9851
94-6926
106-8676
106-8677
106-8678
106-8679
107-2490
106-8681
104-5304
104-5313
104-2116
112-9853
106-8747
5-4460
107-2488
105-1872

Ref Part No. Qty. Description

1

94-1936
94-1937
104-5306
104-5311
104-5307
104-5308
104-5310
104-5309
94-6922
104-5339
104-5340
104-5316
106-8683
104-5360
94-1933
104-5317
104-5318
104-5329
112-9854
112-9855
112-9856
112-9857
112-9858
112-9859

Spring-Block25
Washer-Block, Thrust26

1

Shaft-Input27

1

Bearing-Ball28

1

Ring-Retaining29

1

Spacer30

1

Seal-Lip31

1

Ring-Retaining32

2

Bearing-Thrust33

2

Washer-Flat34

1

Ring-Retaining35

1

Gear-Pinnion, 13T36

1

Shaft-Motor37

1

Washer-Shaft, Motor38

1

Washer39

2

Gear40

1

Gear-Jackshaft, 10T41

1

Pin-Jackshaft42

1

Ring-Spiral, Retaining43

1

Gear-52T Bull44

1

Washer45

1

Bearing-Sleeve46

1

Shaft-Axle47

1

Bushing-Axle48

1

9

3356-862 Rev B

A2

LH Hydro Transaxle Assembly No. 112-4760 (continued)

Ref Part No. Qty. Description

Seal-Lip49

112-9860

n

n

n

n

106-8686
106-8697
106-8698
106-8688
112-9861
112-9863
107-2489
106-8693
110-8563
106-8694
112-9864
108-8562
110-8566
104-1754
105-1875
107-9122
105-1894
112-9866

1

Seal Kit50

1

RH Expansion Pla te Kit51

1

Fan Pulley Kit52

1

Brake Arm Kit53

1

RH Center Section Filter Kit54

1

Tube-Sealant55

1

Bypass Arm Kit56

1

Filter Kit57

1

Nut-Lock, HH58

1

Disc-Brake, Cog59

1

Hose60

1

Pinch-Clamp, Single Ear61

1

Fan-6 Inch, 10 Blade62

1

Pulley63

1

Nut-Lock64

1

Washer-Slotted65

1

Hub ASM66

1

Breather Kit67

1

10

6

3356-862 Rev B

Ref Part No. Qty. Description

op

1

88-4410
3253-4
3274-10
104-2488
107-4873
106-7007
321-4
32144-44
322-7
106-7022
3296-42
92-6877
105-3472
98-5023
104-3334
112843
3212-16
106-2156
32128-25
3296-29
322-4
46-8560

Engine-Briggs And Stratton,

1

31P777-0125-E1
Gasket-Muffler2

1

Washer-Lock3

2

Screw-HSH4

2

Foam-Switch, Seat5

2

Bracket-Pivot6

1

Muffler7

1

Screw-HH8

1

Screw-HWH9

2

Screw-HH10

4

Tube-Drain, Oil11

1

Nut-Lock, NI12

1

Valve-Drain, Oil13

1

Pulley-Engine14

1

Bumper15

1

Clutch-Electric16

1

Washer17

1

Screw-HH18

1

Plate-Mount, Idler19

1

Nut-HF20

4

Nut-Lock, NI21

2

Screw-HH22

2

Screw-HHF23

4

Engine Assembly

Ref Part No. Qty. Description

237-124

25

609830
108-2315-03
109-0297
2412-98
105-3464
46-6560
110-6565
108-2314-03
112-4775
88-4490
106-7028-03

1
2
1
1
2
1
1
1
1
1
1
1

Grommet24
Spring
Plate-Support26
Hose-Fuel27
Clamp28
Gas Tank ASM29
Bushing29:2
Valve-Fuel29:3
Plate-Tank30
Decal-Engine31
Reducer-Throttle, Rpm32
Guard-Muffler33

11