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Toro TimeMaster® 76cm Lawn Mower
Model No. 21816—Serial No. 400000000 and Up
Form No. 3474-280 Rev A
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. 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 illustration and in parts 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
Housing Assembly - Page 4
Spindle and Belt Assembly - Page 6
Side Discharge Chute Assembly - Page 8
Grass Bag Assembly - Page 10
Engine and Belt Assembly - Page 12
Front Wheel and Height-of-Cut Assembly - Page 14
Rear Wheel and Height-of-Cut Assembly - Page 16
Handle Assembly - Page 18
Attachments and Accessories - Page 20
Housing Assembly
Exploded view diagram of the lawn mower's housing assembly, showing the main deck, frame components, and various mounting brackets and covers. Key components include the housing itself, frame parts, release handle rod, door brackets, deflector assembly, and fasteners.
Ref.
Part Number
Qty.
Description
1
136-5874
1
Housing ASM
3
140-3900-01
1
Frame-30"
4
137-3063
2
Bolt-Car
5
139-5415
1
Rod-Release, Handle
6
120-7018
1
Grip-Lever
7
121-9114
1
Bracket-Door, LH
8
121-9115
1
Bracket-Door, RH
9
120-7048
1
Rear Deflector ASM
9:3
131-4514
1
Decal-Warning
10
115-2859
1
Spring-Torsion
11
114-7924
1
Spring-Torsion
12
137-3099
3
Screw-Plastite, HWH
13
138-3224
2
Bracket-Cable, Traction
14
120-5225
1
Plug-Mulch
15
120-6241
1
Shield-Trailing
16
49-2040
9
Screw-HWHTF
19
139-1692
2
Screw-PTH
21
119-4038
2
Nut-Hex
22
139-5406
1
Cover-Belt
23
121-5793-03
1
Door-Access
24
121-5840
2
Fastener
25
125-2507
1
Decal-Access Panel
26
130-2352-01
1
Baffle-Control
27
125-5081-01
1
Plate-Deck
28
32144-86
3
Screw-HWHTF
29
145-3921
1
Spacer
30
139-5409
1
Screw-HH
31
137-3087
1
Nut-Hex
32
125-5072
1
Frame Plate Kit
32:1
125-2542
1
Plate-Frame
32:2
3229-3
3
Screw-CARR
32:3
3296-42
3
Nut-Lock, NI
34
161-8301
3
Spacer-Frame, 30 In.
35
108-4862
1
Screw-HWH Thd Roll
36
147-0471
1
Plug-Button
39
133-8177
1
Chute
Spindle and Belt Assembly
Exploded view diagram of the spindle and belt drive system. It shows the spindle assembly, blade mounting hardware, drive belt, idler pulley, and related components like washers, nuts, and screws.
Ref.
Part Number
Qty.
Description
1
121-9107
2
Spindle ASM
1:2
120-7935
2
Spacer
1:3
138-9770
2
Bearing-Ball
2
139-1731
9
Screw-Thd Roll, HWH
3
139-6612
1
Shaft-Spindle
4
139-6613
1
Shaft-Spindle
5
121-9100
2
Sprocket
6
130-6664
1
Pulley-Brake, Spindle
7
109-9505
2
Washer-Spring
8
139-1725
2
Nut-Hex
9
139-1726
1
Washer-Rebound
10
133-8102
1
Brake Arm ASM
11
121-2305
2
Washer-Friction, Composite
12
138-3244
1
Spacer
13
139-1728
1
Bolt-HH Ft
14
139-1723
4
Washer-Flat
16
119-4038
3
Nut-Hex
17
161-4815
2
Idler-Pulley
18
145-4016
1
Bracket-Idler
19
139-1730
2
Screw-Shoulder, HHF
20
120-3335
1
Belt-Synchronous
21
120-5245-03
1
Guide-Belt, Spindle
22
120-5236
2
Adapter-Blade
23
121-5808
1
Spring-Extension, Brake
24
125-2466
2
Bolt-Blade
25
49-2040
2
Screw-HWHTF
26
120-7082
1
Pulley-Idler
27
120-9696
1
Screw-HH
28
137-3089
1
Nut-Hex
29
116-6358-03
2
Blade-Rotary
30
121-2336
1
Spring-Flat
33
139-1719
1
Screw-HH
35
133-1964
1
Spacer
Side Discharge Chute Assembly
Exploded view diagram of the side discharge chute components. This includes the chute itself, the side deflector, lockout bracket, and various fasteners and springs.
Ref.
Part Number
Qty.
Description
1
112-8760
1
Decal-Danger
3
137-4795
2
Screw
6
138-5325
1
Side Deflector Service ASM
6:1
138-5317
1
Deflector-Discharge, Side
6:2
127-0721
1
Spring-Torsion, Cover
6:3
138-3293
1
Bracket-Lockout
6:4
99-5291
1
Rod-Cover
7
139-5416
1
Side Discharge Chute ASM
8
133-9289
1
Fitting-Washout
8:2
133-9290
1
O-Ring
9
139-1700
2
Screw-HWH, Thd Roll
11
95-3270
1
Connector-Hose
12
120-9570
1
Decal-Warning
14
138-3293
1
Bracket-Lockout
15
107-7463
1
Spacer
16
107-7462
1
Spring-Torsion
17
161-4783
1
Lever-Lockout
18
106-9169
1
Screw-HWH
19
139-1712
1
Nut-Hex Flange
Grass Bag Assembly
Exploded view diagram of the grass bag assembly, showing the frame and the bag itself. It includes part numbers for the frame and the grass bag.
Ref.
Part Number
Qty.
Description
1
121-5766-03
1
Frame-Bag
2
161-8188
1
Bag ASM-Grass
Engine and Belt Assembly
Exploded view diagram of the engine and belt drive system. It illustrates the engine mounting, pulley, and belt, along with associated hardware like screws and washers.
Ref.
Part Number
Qty.
Description
1
137-9350113F1
1
Engine-Briggs,14D9350113F1
10
137-9176
1
Pulley-Engine
11
121-5765
1
V-Belt
12
120-9470
1
V-Belt, Traction
13
139-1734
1
Guide-Belt, Wa
14
95-1727
3
Screw-Taptite
15
3290-465
1
Washer-Belleville
16
26-0671
1
Screw-HH
17
139-1713
2
Screw-Thd Roll
18
131-0889-03
1
Guard-Engine
19
126-2713
2
Screw-HHF
Front Wheel and Height-of-Cut Assembly
Exploded view diagram of the front wheel and height adjustment mechanism. It shows the front wheel, axle, height adjustment levers, and related hardware.
Ref.
Part Number
Qty.
Description
1
137-3099
3
Screw-Plastite, HWH
2
120-9535
1
Grip-Lever
3
119-4042
2
Nut-HF, NI
4
147-0519
2
Bushing-Pivot, Front
4:1
15-4318
1
Resin-Nylon 66
5
139-1753
1
Front Axle ASM
6
120-7037-03
1
Plate-HOC, LH
7
120-7038-03
1
Plate-HOC, RH
8
120-7043
1
Arm-Spring
9
125-2510
2
8 Inch Wheel ASM
10
125-5027
1
Front Cover ASM
10:2
120-7047
1
Artwork-Toro Timemaster
11
139-1727
1
Screw-HWH, Thd Roll
12
137-3061
6
Bolt-CARR
13
119-4038
6
Nut-Hex
14
130-6658
4
Screw-Flange, Plastic
Rear Wheel and Height-of-Cut Assembly
Exploded view diagram of the rear wheel and height adjustment mechanism. It includes the rear wheel, axle, height adjustment components, transmission parts, and associated fasteners.
Ref.
Part Number
Qty.
Description
1
137-4796
1
Grip-Lever, Lift
2
121-5799
1
Conduit-Convoluted
3
49-2040
2
Screw-HWHTF
4
119-4042
2
Nut-HF, NI
5
104-8699
1
Bearing-Ball
6
106-5681
1
Pin-Stop
7
133-2603
2
Bearing-Ball
8
110-7191
2
Washer-Thrust
9
131-5399
2
Gear-Pinion, 15T
10
120-3342-03
1
Plate-HOC, LH
11
120-3343-03
1
Plate-HOC, RH
12
137-9124
1
Arm-Spring
13
120-5209
1
Key-Arm, Spring
14
136-5929
2
Retainer-Bearing
15
131-9665
1
Transmission Kit
15:1:1
130-2370
1
Transmission Pulley Kit
15:2
130-2369
2
Pin-Snap
15:3
32151-61
1
Ring-Retaining
16
147-0404
2
Cover-Gear
17
139-1747
1
Rear Axle ASM
18
125-2509
2
10 Inch Wheel Gear ASM
19
138-3233
1
Mount-Bearing
20
120-7026
1
Spring-Extension
21
120-7027
1
Spring-Extension
22
121-5800
2
Conduit-Convoluted
23
701243
8
Screw-Thd Roll, HWH
24
32144-4
1
Screw-HWH
25
32151-61
1
Ring-Retaining
26
36-4780
2
Washer-Plain
27
138-5338
1
Bracket-Stop
28
137-3089
1
Nut-Hex
29
125-2497
1
Decal-HOC, Rear
30
130-2369
2
Pin-Snap
Handle Assembly
Exploded view diagram of the handle assembly, including upper and lower handle sections, control levers, cables, starter switch, battery charger, and various fasteners and decals.
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