Toro 20478 Parts Catalogue
FORM NO. 3319–297
21” RECYCLER
Mower
Model No. 20478 – 7900001 & Up
Parts Catalog
3319–297
ORDERING REPLACEMENT PARTS
To order replacement parts, please supply: the part number, the quantity, and the description of each
part desired.
Contents
Description Page Description Page
Housing Assembly 1. . . . . . . . . . . . . . . . . . . . . . . .
Engine Assembly 2. . . . . . . . . . . . . . . . . . . . . . . . .
Rear Axle Assembly 3. . . . . . . . . . . . . . . . . . . . . . .
Handle Assembly 4. . . . . . . . . . . . . . . . . . . . . . . . .
Gear Case Assembly 5. . . . . . . . . . . . . . . . . . . . . .
Engine Briggs & Stratton
Model 12H802-1758-A1 6-14. . . . . . . . . . . . . .
Toro Part Number Index 15-17. . . . . . . . . . . . . . . . .
Accessories
Description Model / Parts No. Description Model / Parts No.
Side Discharge Chute Model No. 59199. . . . . . . . . .
Dethatcher Kit Model No. 59131. . . . . . . . . . . . . . . .
Mow & Feed Model No. 52070. . . . . . . . . . . . . . . . . .
Bag Kit Model No. 59296. . . . . . . . . . . . . . . . . . . . . .
Part Description Abbreviations
Part descriptions in this catalog may include the following abbreviations.
Abbreviation Meaning Abbreviation Meaning
AR as required. . . . . . . . . . . . . . . . .
ASM assembly. . . . . . . . . . . . . . . .
CARR carriage. . . . . . . . . . . . . .
DEG degrees. . . . . . . . . . . . . . . .
FH flat head. . . . . . . . . . . . . . . . .
GA gauge. . . . . . . . . . . . . . . . .
HF hex flange. . . . . . . . . . . . . . . . .
HFW hex flange washer. . . . . . . . . . . . . . .
HH hex head. . . . . . . . . . . . . . . . .
HHF hex head flange. . . . . . . . . . . . . . . .
HHST hex head self tapping. . . . . . . . . . . . . . .
HJ hex jam. . . . . . . . . . . . . . . . . .
HOC height-of-cut. . . . . . . . . . . . . . . .
HS hex socket. . . . . . . . . . . . . . . . .
HSBH hex socket button head. . . . . . . . . . . . . .
HSFH hex socket flat head. . . . . . . . . . . . . . .
HSH hex socket head. . . . . . . . . . . . . . . .
HWH hex washer head. . . . . . . . . . . . . . .
HWHTF hex washer head. . . . . . . . . . . . .
thread forming
INC incorporated. . . . . . . . . . . . . . . . .
LH left hand. . . . . . . . . . . . . . . . .
PH pan head. . . . . . . . . . . . . . . . .
PPH Phillips pan head. . . . . . . . . . . . . . . .
PTO power take off. . . . . . . . . . . . . . . .
RH right hand. . . . . . . . . . . . . . . . .
SFH slotted fillister head. . . . . . . . . . . . . . . .
SH square head. . . . . . . . . . . . . . . . .
SHWH slotted hex washer head. . . . . . . . . . . . . .
SPH slotted pan head. . . . . . . . . . . . . . . .
STD standard. . . . . . . . . . . . . . . .
TAP self tapping. . . . . . . . . . . . . . . .
TH truss head. . . . . . . . . . . . . . . . .
TTH Torx truss head. . . . . . . . . . . . . . . .
WH wing head. . . . . . . . . . . . . . . . .
Important Format Explanations
This catalog uses special formats to convey information in illustrations and parts lists. Specifically, one format is
used in conjunction with service assemblies and another with quantities associated with reference numbers.
i
The TORO Company — 1996
All Rights Reserved
3319–297
Service Assemblies
Parts within service assemblies have reference numbers in the form
assembly and Y is 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 part lists and as callouts in illustrations.
X:Y. X
is the reference number of the service
Reference Numbers with Quantities
Illustrations may have a quantity in parentheses next to a reference number, in the form
number. Y in parentheses is the quantity of the part identified by the reference number.
For example, the illustration callout 4 (2) indicates that two parts are used in that instance.
X (Y). X
is the reference
ii
3319–297
41
10
42
13
11
47
50
49
51
14
3
9
8
2
1
17
7 18
19
22
18
19
25
48
21
20
12
34
23
52
24
26
33
15
32
31
28
29
27
35
6
16
35
30
Sheet No.:2
Housing Assembly
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 16–9489 1 Housing–Rwd (Incl.
Ref. #3–9, 17, & 34)
2 93–3696 1 Decal–Deck
3 39–5770 1 Decal–Danger
6 92–1750 1 Plate–Kicker Rear
7 92–1720 1 Kicker–RH
8 92–1730 1 Kicker–LH
9 32144–111 6 Screw – PPH
10 82–9152 1 Chute–Discharge
11 93–7351 1 ASM–Door
12 77–0500 1 ASM–Plug
13 46–6811 3 Screw–HWH
14 46–6810 1 Screw HWH
15 44–0580 1 Shield–Trailing
16 33–3208 1 Rod–Shield
17 92–2279 4 Decal–HOC
18 3296–6 4 Nut–Lock
19 40–1940 4 Washer
20 66–0541 2 ASM–Spring Arm
21 25–7740 2 Knob–Arm
22 32144–85 2 Screw–HH
23 66–0580–03 2 Arm–Pivot
24 66–0560 2 Screw–Shoulder
25 14–9989 2 ASM–Wheel & Tire
(Incl. Ref. #53)
26 27–6232 2 Bolt–Wheel HH
27 82–5680 1 Bracket–Adjustment
28 32144–70 1 Screw–TAP
29 46–7030 1 Retainer–Cable
30 93–4188 1 Cover–Belt
31 62–6673 1 ASM–Gearcase
32 62–4320 1 Bracket–Guide
33 49–2040 2 Screw–HH
34 93–0248 1 Decal–Warning
35 37–7260 2 Screw–TAP
41 71–9350 1 Spring–Bracket
42 80–3770 1 Retainer–Door
47 93–3154 1 Plate–Latch
48 76–4660 1 Spring–Extension
49 46–8090 2 Screw–Tapping
50 76–4650 1 Grip – Latch
51 76–4640 1 Latch – Discharge
Plug
52 3295–35 1 Rivet
53 27–6250 4 Bushing – Wheel
1
5
2
4
6
3
1
3319–297
7
8
13
15
16
R
11
17
18
9
10
19
12
14
Sheet No.:3
Engine Assembly
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 1 Engine
2 93–0243 1 Shroud–Qt Wedge
3 32144–121 2 Screw
4 92–2289 1 Plate–Logo
5 95–1671 1 Decal–Engine
6 2210–316 1 Rope–Stop (P/W Eng)
7 2210–249 1 Clamp–Casing (P/W
Eng)
8 93–8470 1 Screw–Clamp (P/W
Eng)
9 32144–102 3 Screw
10 66–0570 1 Guide–Belt
11 62–7550 1 Pulley–Driver
12 93–4107 1 Retainer–Blade
13 93–4106 1 Blade–Generation Iii
14 94–1608 1 Stiffener–Blade
15 3253–22 1 Washer–Lock
16 26–0670 1 Bolt–Blade
17 82–8550 1 Shield–Muffler
18 32144–73 3 Screw–HWHTF
19 32144–70 2 Screw–TAP
2
3319–297
3
2
4
22
23
6
1
5
24
25
9
11
13
16
7
8
10
12
(NOT SHOWN)
15
14
17
19
Rear Axle Assembly
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 62–3900 1 V–Belt
2 60–8821 1 Lever–Shift
3 3272–10 1 Pin–Cotter
4 82–8780 1 Retainer–Cable
5 42–3520 2 Cap–End
6 63–8721 2 ASM–Arm Spring
7 237–153 2 0–Ring
8 63–8701–03 2 ASM – Pivot
9 65–4730 2 Washer–Thrust
10 65–4740 4 Washer–Thrust
11 65–2720 4 Ring–Retaining
12 65–4710 2 Ring–Friction
13 65–4760 2 Washer
14 66–6050 1 Key–Rocking
15 66–6040 1 Key–Rocking
16 65–4750 2 Gear–Pinion
17 65–4720 2 Spring–Compression
18 74–1660 2 Cover–Wheel
19 74–1671 2 Spacer–Cover
20 16–0029 2 ASM–Wheel Gear &
Tire
21 91–2253 1 Cover–Wheel
22 32144–70 1 Screw–TAP
23 25–7740 2 Knob–Arm
24 32144–85 2 Screw–HH
18
20
26
21
25 3296–6 2 Nut–Lock
26 27–6232 2 Bolt–Wheel HH
Sheet No.:4
3
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