Toro 74263 Parts Catalogue

Form Number 3354-315 Rev B

Z557 Z Master

With 72in TURBO FORCE

Model No. 74263 - 260000001 and up.

Parts Catalog

®

®

Side Discharge Mower

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 - 2005

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

. . . . . . 3Front Frame Assembly

. . . . . . 4Castor and Wheel Assemb ly

. . . . . . 5Main Frame Assembly

. . . . . . 6Brake and Wh ee l Hu b A s s em b l y

. . . . . . 7Steering Control Assembly

. . . . . . 8Hydraulic System Assembly

Seat and Roll-Over-Protection-System
Assembly

Roll-Over-Protection-System Assembly No.
108-1097

. . . . . . 10

. . . . . . 11Seat Assembly No. 110-0446

. . . . . . 12

. . . . . . 13Deck Connection Assembly

. . . . . . 14Deck Assembly

. . . . . . 16Spindle Assembly No. 106-3217

. . . . . . 17Deck and Decal Assembly No. 107-1625

. . . . . . 18Rubber Deflector Assembly No. 108-2792

. . . . . . 19Lever Assembly No. 107-1664

. . . . . . 20Drive Idler Assembly

. . . . . . 21Engine and Clutch As s embly

. . . . . . 22Muffler and Guard Assembly

Description Page

Oil Pan and Lubrication Assembly Kohler
CH750-0010

Head, Valve and Breather Assembly Kohler
CH750-0010

Ignition and Electrical Assembly Kohler
CH750-0010

Blower Housing and Baffle Assembly Kohler
CH750-0010

Air Intake and Filtration Assembly Kohler
CH750-0010

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

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

INC. . . . . . . . . . . . . . incorporated

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-protectio n-syste m

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

. . . . . . 23Fuel Tank Assembly

. . . . . . 24Electrical Assembly

. . . . . . 25Crankshaft Assembly Kohler CH750-0010

. . . . . . 26Crankcase Assembly Kohler CH750-0010

. . . . . . 27

. . . . . . 28

. . . . . . 29

. . . . . . 30

. . . . . . 31Starting System Assembly Kohler CH750-0010

. . . . . . 32Fuel System Assembly Kohler CH750-0010

. . . . . . 33Engine Control Assembly Kohler CH750-0010

. . . . . . 35

. . . . . . 34Exhaust Assembly Kohler CH750-0010

. . . . . . 37Decal Assembly Kohler CH750-0010

forming

Footnotes

n

Not illustrated

p

Optional Equipment

o

Not serviced separately

q

Obtain from your local Kohler dealer

2

3354-315 Rev B

Ref Part No. Qty. Description

Front Frame ASM1

107-8084
107-1857
1-811010
302-19
103-1918
106-9981
106-7451
107-2112
103-1918
103-2083-03
1-633295
103-2064-03
1-633325
3256-24
3296-39
32151-103
1-633068
323-29
1-633889-01
108-7759-01
1-633082
1-633080
323-13
106-9951

1

Decal-Brake, Parking1:2

1

Plug1:3

2

Fitting-Grease1:4

5

Bushing1:5

1

Front Floorpan ASM3

1

Decal3:2

1

Decal-Warning3:3

1

Bushing4

1

Lift Lever ASM5

1

Grip-Lever, Lift6

1

Arm-Lift, Deck7

1

Spring-Compression8

1

Washer-Flat9

1

Nut-Lock, NI10

9

Ring-Snap11

5

Arm-Lift, Deck12

2

Screw-HH14

2

Plate-Lift, Deck15

1

Plate-Lift, Deck16

1

Bushing-Lever, Lift17

1

Bushing-Lever, Lift18

1

Screw-HH19

1

Hitch Pin ASM20

1

Front Frame Assembly

Ref Part No. Qty. Description

323-9
98-5975
3290-357
323-6
323-7
3256-29

o

1-633096
1-633441
3217-11
3218-6
3256-7
1-643015
107-1861
107-1860
3274-94
108-7786-01
106-8984-01
1-523157
32151-29
3274-18
3218-2
1-513658

12
15

12

2

Screw-HH22
Washer-Belleville23
Nut-HHF, Whiz24
Screw-HH25

1

Screw-HH26
Washer-Flat27

4

Front Frame Spring ASM35

2

Rod-Lift, Deck35:1

1

Swivel-Deck Mount, Rear35:2

2

Nut-Hex35:3

3

Nut-Jam35:4

3

Washer-Flat35:5

2

Spring-Support, Deck35:6

1

Decal-Height, Deck36

1

Decal-Height, Deck37

1

Screw-HSBH38

4

RH Front Deck Lift ASM40

1

LH Deck Lift ASM41

1

Washer-Spacer, 14 GA42

2

Ring-Retaining43

2

Screw-HSH44

2

Nut-Jam45

2

Bumper46

2

3

3354-315 Rev B

3

Castor and Wheel Assembly

Ref Part No. Qty. Description

Cap-Grease1

103-4882
3296-51
1-633508
254-94
254-72
1-543511
103-1474-01
1-644251
1-633580
1-633581
1-633585
1-633959

o

1-523009
1-633987
1-633584
325-39
3296-23

2

Nut-Lock, NI2

2

Washer-Bellville3

6

Bearing-Cone, Tapered4

4

Bearing-Cup, Tapered5

4

Seal-Grease7

2

Fork-Caster8

2

Caster Wheel ASM11

2

Seal-Bearing11:1

2

Spacer-Bearing11:2

2

Bearing-Cone, Taper11:3

2

Spacer-Caster, Front11:4

1

Wheel And Tire ASM11:5 1
Tire11:5:1

1

Wheel11:5:2

1

Bearing-Cup11:5:3

2

Screw-HH21

2

Nut-Lock, NI22

2

4

4

3354-315 Rev B

Ref Part No. Qty. Description

Stop-Brake, Park1

1-633964-03
322-43
323-6
108-1095
107-8076
1-633970
1-633993
1-633992
232-27
107-1858
98-4387
107-1864
242-50
3296-39
1-513762
1-303335
321-4
32128-33
3256-70
106-7498
106-7488-03
106-7489-03
323-20
3296-59

1

Screw-HH4

6

Screw-HH5

2

Main Frame ASM11

1

Decal-Console, Top11:2

1

Wheel And Tire ASM12

2

Tire12:1

1

Wheel12:2

1

Stem-Valve12:3

1

Floorpan13

1

Decal-Protection, Ear13:2

1

Decal-Location, Manual13:3

1

Nut-Lug15

8

Nut-Lock, NI21

2

Clip-Loom24

1

Tie-Plastic25

1

Screw-HH27

3

Nut-HF28

1

Washer-Flat44

6

Pocket47

1

Hinge-Floorpan, LH48

1

Hinge-Floorpan, RH49

1

Screw-HH50

2

Nut-Lock, NI51

2

Main Frame Assembly

Ref Part No. Qty. Description

3296-42
3256-63
3258-166
106-9989
106-7492
107-1865
104-7050
104-7048

4

Nut-Lock, NI52
Washer-Flat53

2

Screw-PRH54

2

Decal-Warning55

1

Decal-Danger56

1

R-Clamp57

2

Housing-Manual58

1

Cap-Housing59

1

5

3354-315 Rev B

5

Brake and Wheel Hub Assembly

Ref Part No. Qty. Description

Bearing-Control1

1-513140
1-633454
103-4332
1-633131
1-633477
3219-3
1-634500
1-633268
1-632217-03
103-0354-03
1-523157
103-0355
1-633060
1-633062
1-633102
103-4333
1-633131
1-633477
3219-3
1-633144
103-0590
103-0589
1-633926
323-4

6

2

Spring-Brake2

2

Brake Rod And Yoke ASM3

1

Yoke-Linkage, Brake3:1

2

Rod-Brake3:2

1

Nut-Hex3:3

2

Brake Lever ASM4

1

Grip-Lever, Brake4:2

1

Shaft-Brake5

1

Bracket-Brake ASM6

2

Washer-Spacer, 14 GA7

2

Band-Brake9

2

Spacer-Wheel, Short10

4

Spacer-Wheel, Long11

4

Bearing-Flange, Side12

2

Brake Rod And Yoke ASM13

2

Yoke-Linkage, Brake13:1

1

Rod-Brake13:2

1

Nut-Hex13:3

1

Pin-Trunion14

2

Hub And Wheel ASM15

2

Wheel Hub ASM15:1

1

Stud-Wheel15:2

4

Screw-HH18

4

Ref Part No. Qty. Description

3

103-2399
325-20
302-19
103-0131
3219-3
3290-357
3253-7
3256-4
3272-10
1-806800
322-9
103-0384
103-0374
1-808285

Pin-Spring, Clevis19
Screw-HH20

8

Fitting-Grease21

2

Nut-Square22

8

Nut-Hex23

4

Nut-HHF, Whiz24

4

Washer-Lock25

8

Washer-Flat26

4

Pin-Cotter27

2

Pin-Cotter28

2

Screw-HH29

6

Spacer30

6

Retainer-Band, Brake31

2

Pin-Clevis32

1

6

3354-315 Rev B

Steering Control Assembly

Ref Part No. Qty. Description

Yoke-Adjustable1

1-303105
98-5975
103-4079
1-603735
1-603737
1-603807
1-403180
103-4331
1-543017
3219-2
103-3064
1-804524
1-633152
103-4330
1-543017
3219-2
103-3060
1-804524
1-323245
1-633152
103-3064
108-7238
106-9987
1-632208

2

Washer-Belleville2

4

Damper-Control, Motion3

2

Bushing-Flanged5

2

Bolt-Return, Neutral6

2

Spring-Return, Neutral7

2

Screw-HH8

4

Tracking Rod ASM9

1

Balljoint-RH9:1

1

Nut-Hex9:2

3

Link-Rod, Tracking9:3

1

Nut9:4

1

Balljoint-Thread, LH9:5

1

Tracking Rod ASM10

1

Balljoint-RH10:1

1

Nut-Hex10:2

1

Knob-Tracking10:3

1

Nut10:4

2

Spring-Compression10:5

2

Balljoint-Thread, LH10:6

1

Link-Rod, Tracking10:7

1

LH Lever ASM11

1

Grip-Control, Motion11:1

1

Arm-Control, Pump12

2

Ref Part No. Qty. Description

1

16

Control-Motion, LH13
Control-Motion, RH14

1

Bearing-Flange, Side16

4

Arm-Shaft, Control18

2

Screw-HH20

4

Screw-HH21

8

Screw-HH22

4

Screw-HH23

6

Screw-Set24

2

Nut-Lock, NI25

6

Nut-Hex26

4

Nut-Jam28

2

Washer-Flat29

2

Washer-Flat30

4

Pin-Cotter32

2

Pin-Clevis33

2

Nut-HF34
Nut-HHF, Whiz35

8

RH Lever ASM37

1

Grip-Control, Motion37:1

1

103-4781
103-4782
1-633102
103-0407
322-6
323-4
323-6
323-9
1-803022
3296-39
3219-2
3220-2
3256-2
3256-3
3272-5
1-808280
32128-20
3290-357
108-7237
106-9987

7

3354-315 Rev B

7

Hydraulic System Assembly

Ref Part No. Qty. Description

HYD Hose ASM1

103-3734
103-1947

o

n

n

n

103-1948
103-1949
1-523552
104-7836
1-633752
1-633750
103-1799
237-42
1-633786
237-80
1-603992
103-6988
1-809036
3257-42
1-000099
1-000139
103-2748
1-603384
103-3330
109-1936
103-1826

8

2

HYD Reservoir ASM2

1

Reservoir-HYD2:1

1

Cap-Reservoir, HYD2:1:1

1

Gasket-Cap2:1:2

1

Decal-Tank, HYD2:2

1

Head-Filter3

1

Filter-HYD, Winter6

1

Filter-HYD6

1

Elbow-90 DEG7

2

O-Ring7:1

1

Fitting-90 DEG10

4

O-Ring10:1

1

O-Ring10:2

1

Motor-Wheel11

2

Nut-HH11:1

1

Key-Woodruff11:2

1

Seal Kit11:99

1

Bearing Kit11:99

1

Drive Link Kit11:99

1

Bushing-Pivo t , Id l e r12

1

Spring-Extension13

1

Pump Inlet Hose ASM14

1

HYD Hose ASM14:1

1

Ref Part No. Qty. Description

HYD Hose ASM14:2

103-1827
103-1828
237-42
103-1716
103-1988
103-1801
237-42
103-1912
237-42
103-1802
1-603921
1-603990
1-603920
1-603992
103-1863
103-1808
103-1807
237-42
103-1806
103-6907
1-633567
103-7445
1-633167
1-634277

1

Adapter-Run, Tee14:3

1

O-Ring14:3:1

1

Clamp-Hose16

3

Clamp-Hose17

2

Adapter-Straight18

1

O-Ring18:1

1

Adapter-Straight19

1

O-Ring19:1

1

Fitting-HYD, 90 DEG20

2

O-Ring20:1

1

Fitting-Straight21

4

O-Ring21:1

1

O-Ring21:2

1

Hose-Lower22

2

Hose-HYD25

1

Elbow-45 DEG26

1

O-Ring26:1

1

HYD Hose ASM27

1

Sheave28

2

Sheave29

1

Belt-V30

1

Sheave-Idler31

1

Bearing Arm ASM33

1

7

3354-315 Rev B

Hydraulic System Assembly (continued)

Ref Part No. Qty. Description

Sleeve-Bearing33:1

1-513034
302-40
321-6
323-8
323-9
1-800805
323-7
1-803022
30-1710
1-803050
3256-22
3256-3
3256-4
13-2840
5-1077
3290-357
32128-33
1-805004
321-3
103-7262

n

n

n

n

103-7441
103-7443
103-8448
105-6184

2

Fitting-Grease33:3

1

Screw-HH34

2

Screw-HH35

1

Screw-HH36

1

Screw-HH37

1

Screw-HH38

4

Screw-Set39

2

Screw40

2

Screw-Set41

2

Washer-Flat42

2

Washer-Flat43

1

Washer-Flat44

1

Key-Square45

1

Key-Square46

2

Nut-HHF, Whiz47

8

Nut-HF48

2

Washer-Lock49

2

Screw-HH50

2

Pump-HYD51

2

Bearing-Shaft, Input51:1

1

Cylinder Block Kit51:2

1

Thrust Bearing Kit51:3

1

Overhaul Seal Kit51:4

1

9

3354-315 Rev B

8

Seat and Roll-Over-Protection-System Assembly

Ref Part No. Qty. Description

Seat ASM2

110-0446
1-633293
322-5
323-39
3296-29
3296-39
32128-20
99-4693
108-1097

1

Rod-Holdup, Seat16

1

Screw-HH17

1

Screw-HH18

2

Nut-Lock, NI20

3

Nut-Lock, NI21

3

Nut-HF23

4

Decal34

1

ROPS ASM78

1

10

A1

3354-315 Rev B

Seat Assembly No. 110-0446

Ref Part No. Qty. Description

Armrest Kit1

110-5719
110-4163
3256-22
322-10
105-3623
32153-3
105-3621
105-3622
321-30
3296-42
110-4162
110-0447
1-633859
1-643255
110-0883
3212-4
3296-7
1-543401
321-30
32128-20
3256-22

1

Cushion-Arm Rest1:1

2

Washer-Flat1:2

4

Screw-HH1:3

2

Channel-Armrest1:4

2

Nut-Hex, Side Deform1:5

2

Bracket-Armrest, RH1:6

1

Bracket-Armrest, LH1:7

1

Screw-HH1:8

8

Nut-Lock, NI1:9

4

Cushion-Seat, Bottom3

1

Cusion-Seat, Back4

1

Frame-Seat7

1

Track-Seat8

1

Retractable Seatbelt Kit11

1

Screw-HH11:2

2

Nut-Lock11:3

2

Spacer-Track12

4

Screw-HH13

5

Nut-HF14

4

Washer-Flat15

5

11

3354-315 Rev B

A2

Roll-Over-Protection-System Assembly No. 108-1097

Ref Part No. Qty. Description

no

12

o

107-2101
107-2102
107-3154
103-4553
325-13
32128-23
106-0887
107-3124
107-3052-03
107-3058
322-3
3296-29
3296-39
323-20
107-0076
107-0075
103-4434
3256-24
107-3083
110-0883
3212-4
3296-7

Upper Tube ASM1

1

Decal-ROPS1:2

1

Decal-Warning, Folding ROPS1:3

1

Nut-Push2

2

ROPS Fold Pin ASM4

2

Screw-HH5

2

Nut-HF6

2

Knob13

2

Clip14

2

Seat Support Frame ASM16

1

Catch-Latch, Seat17

1

Screw-HH18

2

Nut-Lock, NI19

2

Nut-Lock, NI20

1

Screw-HH23

1

Spring-Torsion24

1

Bushing-Latch, Seat25

1

Grip-Lever26

1

Washer-Flat28

1

Latch ASM29

1

Retractable Seatbelt Kit34

1

Screw-HH34:2

2

Nut-Lock34:3

2

Bag-Bolt, ROPS54

1

Ref Part No. Qty. Description

54:3

323-6
98-5975
3290-357

8

Screw-HH
Washer-Belleville54:4

8

Nut-HHF, Whiz54:5

8