Toro 74166 Parts Catalogue

Z153 Z Master

Form Number 3329-871

Ordering Replacement Parts

For example, a wheel assembly might be identified by

®

With 52in SFS Side Discharge Mower

Model No. 74166 - 240000001 and up.

Parts Catalog

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.

All Rights Reserved

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.

2003©The Toro Company -

Part Description Abbreviations

Part descriptions in this catalog may include the following abbreviations.

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

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

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

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

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

HS. . . . . . . . . . . . . . . hex

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

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

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

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

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

Footnotes

Œ

Not illustrated

Ž

Obtain Parts From Kohler

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

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

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

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

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

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

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

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

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

WH. . . . . . . . . . . . . . .wing head

•

Not serviced separately

Contents

Description Page

. . . . . . Front Frame Assembly

. . . . . . Caster Wheel Assembly No. 1-634662

. . . . . . Front Spring Assembly No. 103-1987

. . . . . . Height of Cut Assembly

. . . . . . Main Frame Assembly

. . . . . . Fuel System Assembly

. . . . . . Parking Brake System Assembly

. . . . . . Steering Control Assembly

. . . . . . Hydraulic System Assembly

. . . . . . Hydraulic Pump Assembly No. 103-1942

. . . . . . Pump Idler and Belt Assembly

. . . . . . Engine, Clutch and Muffler Assembly

. . . . . . Deck Assembly

Deck Decal and Deflector Assembly No. 106­5876

Roll-Over Protection System Assembly No. 107­3066

. . . . . .

. . . . . . Deck Spindle Assembly

. . . . . . Idler Pulley, Lift Strut and Chain Assembly

. . . . . . Electrical System Assembly

. . . . . . Seat and Roll-Over-Protection-System Assembly

. . . . . . Seat Assembly No. 107-1867

. . . . . .

. . . . . . Crankshaft Assembly Kohler CV23S PS75560

Description Page

. . . . . . Crankcase Assembly Kohler CV23S PS75560

Oil Pan/Lubrication Assembly Kohler CV23S
PS75560

Head/Valve/Breather Assembly Kohler CV23S
PS75560

Ignition/Electrical Assembly Kohler CV23S
PS75560

Blower Housing Assembly Kohler CV23S
PS75560

Engine Control Assembly Kohler CV23S
PS75560

Air Intake/Filtration Assembly Kohler CV23S
PS75560

. . . . . .

. . . . . .

. . . . . .

. . . . . .

. . . . . . Starter Assembly Kohler CV23S PS75560

. . . . . . Fuel System Assembly Kohler CV23S PS75560

. . . . . .

. . . . . .

. . . . . . Exhaust Assembly Kohler CV23S PS75560

2

3329-871

Ref Part No. Qty. Description

Caster Wheel ASM1

10
10

2

Caster3

2

Seal-Grease4

2

Bearing-Cone, Taper5

4

Washer-Bellville6

6

Nut-Lock, NI7

2

Cap-Grease8

2

Screw-HH9

6

Washer-Flat10

4

Floorpan ASM11

1

Pad-Antiskid11:2

1

Decal11:3

1

Decal-Warning11:4

1

Hinge-Floorpan12

1

Footrest ASM13

1

Decal-Service13:2

1

Decal-Missing, Cover13:3

1

Pad-Antiskid13:4

1

Screw-CARR14
Nut-HF15
Bolt-CARR16

2

Bracket-Floorpan17

2

Nut-HF18

8

Decal-Std, Safety19

1

1-634662
1-632511-01
1-543511
254-94
1-633508
3296-51
1-543513
322-3
3256-23
107-2107
1-633553
106-7451
107-2112
1-653049
99-3930
99-3924
98-5954
1-633553
3229-10
32128-33
3230-1
99-3870-01
32128-20
105-2625

Front Frame Assembly

Ref Part No. Qty. Description

107-1783
1-633818
32151-103
3256-29
3290-357
98-5975
323-7
3218-2
3274-18
103-1987
107-1791-01
107-1792-01
302-19
1-811010
254-72

12
12
12

Front Frame ASM20

1

Decal-Warning20:2

1

Ring-Snap21

6

Washer-Flat22

6

Nut-HHF23
Washer-Belleville24
Screw-HH25
Nut-Jam26

2

Screw-HSH27

2

Front Spring ASM31

2

LH Front Deck Lift ASM33

1

RH Front Deck Lift ASM34

1

Fitting-Grease35

4

Plug36

2

Bearing-Cup, Tapered38

4

3

3329-871

A1

Caster Wheel Assembly No. 1-634662

Ref Part No. Qty. Description

Wheel And Tire ASM1

1-633582
1-633002
1-633583
1-633584
1-633581
1-633580
1-633585
1-633579
325-36
3296-45

1

Tire1:1

1

Wheel1:2

1

Bearing-Cup1:3

2

Spacer-Bearing2

2

Seal-Bearing3

2

Bearing-Cone, Taper4

2

Spacer-Caster, Front5

1

Screw-HH6

1

Nut-Lock, NI7

1

4

A2

3329-871

Front Spring Assembly No. 103-1987

Ref Part No. Qty. Description

Rod-Lift, Deck1

1-653011
1-633441
3217-11
3218-6
1-805517
1-653009
3256-27

1

Swivel-Deck Mount, Rear2

2

Nut-Hex3

4

Nut-Jam4

2

Washer5

1

Spring-Compression6

1

Washer-Flat7

1

5

3329-871

3

Ref Part No. Qty. Description

Screw-HH1

323-9
32151-103
3290-357
3296-39
1-652235-01
1-633080
1-653230-01
1-806005
323-6
323-13
1-633082
103-2078-03
1-633295
1-633097
302-19
103-1918
106-6598-03
1-633325
3256-24
1-633068
323-29
1-653140
1-653147
323-8

1

Ring-Snap2

1

Nut-HHF3

5

Nut-Lock, NI4

3

Plate-Lift, Deck5

1

Bushing-Lever, Lift6

1

Plate-Lift, Deck7

1

Pin-Hair8

1

Screw-HH9

1

Screw-HH10

1

Bushing-Lever, Lift11

1

Handle-Lift12

1

Grip-Lever, Lift13

1

Pin-Hitch (W/lanyard)14

1

Fitting-Grease15

1

Bushing16

2

Lift Arm ASM17

1

Spring-Compression18

1

Washer-Flat19

1

Arm-Lift, Deck20

2

Screw-HH21

2

Decal-Deck Height, Outer22

1

Decal-Deck Height, Inner23

1

Screw-HH26

1

Height of Cut Assembly

6

4

3329-871

Ref Part No. Qty. Description

Bumper1

12

2

Console ASM2

1

Decal-Panel, Control2:2

1

Decal-Valve, Fuel2:3

1

Decal-Protection, Ear2:4

1

Control-Choke3

1

Bolt-CARR4

2

Screw-HH5

2

Washer-Flat6

2

Knob-Ball7

1

Screw-HH8

3

Bracket9

1

Nut-HF10
Control-Throttle11

1

Nut-Lock12

2

Console Frame ASM13

1

Decal-Console, Top13:2

1

Bumper24

2

Main Frame ASM25

1

Decal-Surface, Hot25:2

2

Nut-Lock, NI26

2

Clip-Loom27

1

Wheel And Tire ASM28

2

Tire28:1

1

1-513658
106-6589
106-6586
103-0262
98-4387
103-3085
1-807513
322-5
3256-23
1-513592
322-3
1-653089-03
32128-20
103-3086
3296-2
105-6123
103-1997
1-523420
107-2117
65-2690
3296-42
1-633396
1-653159
1-653160

Main Frame Assembly

Ref Part No. Qty. Description

1-653161
232-27
242-50
322-2
3256-3
3296-39
3231-21

Wheel28:2

1

Stem-Valve28:3

1

Nut-Lug29

8

Screw-HH30

6

Washer-Flat32

2

Nut-Lock, NI33

1

Screw-CARR36

1

7

3329-871

5

Ref Part No. Qty. Description

LH Fuel Tank ASM1

106-9976
103-2605
106-9975
103-2605
3256-23
1-805005
322-3
1-303077
1-543296
1-543526
1-633347
103-0216
1-303335
88-3980
88-4010
1-633023
1-633349
3296-47

1

Fitting-Fuel, Bulkhead1:2

1

RH Fuel Tank ASM2

1

Fitting-Fuel, Bulkhead2:2

1

Washer-Flat3

8

Washer-Lock4

4

Screw-HH5

4

Clamp7

6

Grommet9

2

Hose-Fuel10

2

Valve-Fuel11

1

Hose-Fuel12

1

Tie-Plastic16

1

Gas Cap ASM20

2

Gasket-Cap, Gas20:3

1

Stud21

4

Spring-Tank, Fuel22

4

Nut-Lock, NI23

4

Fuel System Assembly

8

6

3329-871

Parking Brake System Assembly

Ref Part No. Qty. Description

Crank-Brake, Park1

1-652073-03
3272-10
1-808285
3219-3
1-653068
325-13
103-0355
103-0590
103-0589
1-633926
103-2399
1-806800
103-0374
103-0384
322-9
103-0352-03
1-633144
3256-4
1-633454
323-4
1-653074-03
1-633268
1-653069
3253-7

1

Pin-Cotter2

2

Pin-Clevis4

2

Nut-HH5

4

Spacer-Wheel7

4

Screw-HH9

8

Band-Brake10

2

Hub-Wheel ASM11

2

Wheel Hub ASM11:1

1

Stud-Wheel11:2

4

Pin-Spring, Clevis12

2

Pin-Cotter13

2

Retainer-Band, Brake14

2

Spacer15

6

Screw-HH16

6

Bracket-Brake17

2

Pin-Trunion18

2

Washer-Flat19

4

Spring-Brake20

2

Screw-HH21

9

Handle-Brake, Park22

1

Grip-Lever, Brake23

1

Spacer-Wheel24

4

Washer-Lock25

8

Ref Part No. Qty. Description

Nut-Square26

103-0131
1-633102
3290-357
103-3116
1481
98-5975
1-523157
1-523328
1-809036
3257-42

Œ

Œ

Œ

1-000139
103-2748
1-000099
32151-48
3256-28
103-4328
1-633131
1-653061
3219-3
103-4329
1-633131
103-0356
3219-3

8

Bearing-Flange, Side27

4

Nut-HHF28

8

Shaft-Brake, Parking29

1

Fitting-Grease31

2

Washer-Belleville32

1

Washer-Spacer33

2

Motor-Wheel34

2

Nut-HH34:1

1

Key-Woodruff34:2

1

Bearing Kit34:99

1

Drive Link Kit34:99

1

Seal Kit34:99

1

E-Ring35

1

Washer-Flat36

1

Brake Rod ASM37

1

Yoke-Linkage, Brake37:1

2

Linkage-Handle, Brake37:2

1

Nut-HH37:3

2

Brake Rod ASM38

2

Yoke-Linkage, Brake38:1

1

Rod-Brake38:2

1

Nut-HH38:3

1

9

3329-871

7

Steering Control Assembly

Ref Part No. Qty. Description

Screw-HH1

12

2

Pin-Damper2

2

Washer-Flat3

4

E-Ring4

2

Damper-Control, Motion5

2

Bearing-Flange, Side7

4

Control-Motion, LH8

1

Nut-HF9
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

Washer-Flat11

4

Screw-HH13

4

Nut-HHF14

8

LH Lever ASM15

1

Grip-Control, Motion15:1

1

Nut-Hex16

4

Screw-HH19

8

Arm-Control20

2

1-403180
103-4101
3256-23
32120-35
103-4079
1-633102
103-4774
32128-20
103-4326
1-543017
3219-2
103-3060
1-804524
1-323245
1-633152
103-3066
3256-3
322-6
3290-357
103-0631
1-633257
3219-2
323-4
103-3717

Ref Part No. Qty. Description

Screw-Set21

1-803022
103-4773
3296-39
103-0407
98-5975
323-6
103-0632
1-633257
323-9
1-603737
1-603807
1-603735
3256-2
3220-2
1-303105
1-808280
3272-5
103-4327
1-543017
1-633152
1-804524
103-3066
3219-2

2

Control-Motion, RH23

1

Nut-Lock, NI24

6

Arm-Shaft, Control25

2

Washer-Belleville26

4

Screw-HH27

4

RH Lever ASM28

1

Grip-Control, Motion28:1

1

Screw-HH30

6

Bolt-Return, Neutral31

2

Spring-Return, Neutral32

2

Bushing-Flanged33

2

Washer-Flat36

2

Nut37

2

Yoke-Adjustable38

2

Pin-Clevis39

2

Pin-Cotter40

2

Tracking ASM41

1

Balljoint-RH41:1

1

Balljoint-Thread, LH41:2

1

Nut41:3

1

Link-Rod, Tracking41:4

1

Nut-Hex41:5

3

10

8

3329-871

Hydraulic System Assembly

Ref Part No. Qty. Description

Pump-HYD1

103-1942
103-1799
237-42
103-1988
1-653156
1-803050
1-807272
323-7
3290-357
103-2644
103-1802
237-42
103-1940
237-79
1-603992
1-633605
1-603992
237-80
1-653186
1-653187
103-2357
103-1801
237-42
103-1912

2

Elbow-90 DEG3

2

O-Ring3:1

1

Clamp-Hose5

3

Pulley7

2

Screw-Set8

4

Key9

2

Screw-HH10

4

Nut-HHF11

4

Decal-Exhaust15

1

Fitting-Hyd, 90 DEG16

2

O-Ring16:1

1

Adapter-Hyd, Straight17

4

O-Ring17:1

1

O-Ring17:2

1

Fitting-Hyd, 90 DEG18

2

O-Ring18:1

1

O-Ring18:2

1

Hose-Front19

1

Hose-Rh, Rear20

1

HYD Hose ASM21

1

Adapter-Straight22

1

O-Ring22:1

1

Adapter-Straight23

1

Ref Part No. Qty. Description

O-Ring23:1

237-42
103-1947

•

103-1948
103-1949
1-523552
103-3071-03
322-3
321-3
103-3077
103-2930
103-2889
103-1912
237-42
32128-20
1-633750
1-633752
321-6
1-805004
103-1716
322-5
103-3809
1-603991
237-80

1

HYD Reservoir ASM24

1

Reservoir-HYD24:1

1

Cap-Reservoir, HYD24:1:1

1

Gasket-Cap24:1:2

1

Decal-Tank, HYD24:2

1

Stand-Reservoir25

1

Screw-HH26

1

Screw-HH27

2

HYD Hose ASM29

1

HYD Hose ASM30

1

Filter Head ASM32

1

Adapter-Straight32:1

2

O-Ring32:1:1

1

Nut-HF33

2

Filter-HYD34

1

Filter-Hyd, Winter34

1

Screw-HH35

2

Washer-Lock36

2

Clamp-Hose37

3

Screw-HH38

1

Hose-LH39

2

Fitting-Straight40

2

O-Ring40:1

1

11