Toro 73521 Parts Catalogue
FORM NO. 3318–525 REV. B
520–He GT Int’l
Garden Tractor
Model No. 73521 – 6900001 & Up
Parts Catalog
3318–525 REV . B
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
Hood Assembly 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Frame Axle and Steering System 2. . . . . . . . . . . . . .
Hoodstand, Console 3. . . . . . . . . . . . . . . . . . . . . . . . .
Footrest & Hoodstand Side Covers 4. . . . . . . . . . . .
Gauges, Warning Lights & Controls 5. . . . . . . . . . . .
Hydraulic Lift System 6. . . . . . . . . . . . . . . . . . . . . . . .
Hydraulic Lift System 7. . . . . . . . . . . . . . . . . . . . . . . .
Hydro Controls, Brake System 8. . . . . . . . . . . . . . . .
Hydro Drive, Parking Brake 9. . . . . . . . . . . . . . . . . . .
Fender, Seat & Tail Lights 10. . . . . . . . . . . . . . . . . . . .
PTO Clutch And Cover 11. . . . . . . . . . . . . . . . . . . . . . .
PTO Clutch System 12. . . . . . . . . . . . . . . . . . . . . . . . .
Engine Assembly 13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmission Control & Filter Assembly 14. . . . . . . .
Transmission Control & Filter Assembly 15. . . . . . . .
Wheel Assemblies 16. . . . . . . . . . . . . . . . . . . . . . . . . . .
Hitch Assembly 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery Assembly 18. . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Tank & Hydro Fan Control Assembly 500 19. . .
Hoodstand Electrical Housing & Wire Harness 20. .
Hydrostatic Transmission 21. . . . . . . . . . . . . . . . . . . . .
Hydrostatic Transmission (Continued) 22. . . . . . . . . .
This Page Intentionally Left Blank 23. . . . . . . . . . . . .
Eaton Hydrostatic Transmission #110–062 24. . . . . .
Eaton Hydrostatic Transmission #110–062 25. . . . . .
Starter 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Housing 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flywheel 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cam & Crankshafts 29. . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Fill Tube & Base 30. . . . . . . . . . . . . . . . . . . . . . . . .
Oil Filter 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gear Case & Ignition Controls 32. . . . . . . . . . . . . . . . .
Ignition Electronics 33. . . . . . . . . . . . . . . . . . . . . . . . . .
Air Cleaner 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Governor 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intake Manifold & Carburetor 36. . . . . . . . . . . . . . . . . .
Choke Control 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Filter & Pump 38. . . . . . . . . . . . . . . . . . . . . . . . . .
This Page Intentionally Left Blank 39. . . . . . . . . . . . .
Engine Cylinder Block 40. . . . . . . . . . . . . . . . . . . . . . . .
Engine Cylinder Block 41. . . . . . . . . . . . . . . . . . . . . . . .
Wire Harness & Cable Routing 42. . . . . . . . . . . . . . . .
Electric Schematic 43. . . . . . . . . . . . . . . . . . . . . . . . . . .
520–Wire Harness Attachment & Component’s 44. .
520–Wire Harness Attachment & Component’s 45. .
Engine Wire Harness 46. . . . . . . . . . . . . . . . . . . . . . . .
Note:
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. . . . . . . . . . . . . . . . .
i
The TORO Company — 1996
All Rights Reserved
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. . . . . . . . . . . . . . . . .
3318–525 REV . B
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.
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
ii
3318–525 REV . B
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
iii
RH 1
LH 2
Any part identified in this illustration but not included in the parts list is not used on this model.
25
6
5
4
3
24
3318–525 REV . B
7
28
10
9
23
22
21
20
18191615
Hood Assembly
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 109495 1 Bezel–LH Headlight
2 109494 1 Bezel–RH Headlight
3 102881 2 Headlamp
4 114052 1 Wire Harness
5 109459 2 Clamp–Headlight
6 9266714 2 Screw–HWHTF
7 9080356 1 Screw–HH
9 117432 4 Poprivet
9 8830 1 Retainer–”J”
10 117344 2 Handle–Latch
11 3296–42 4 Nut–Lock
12 3256–22 3 Washer–Flat
13 116747 1 Bracket–Grill LH
14 3229–25 4 Screw–CARR
15 101850 1 Rod–Hood Stop
16 3272–1 2 Pin–Cotter
17 5979 2 Bushing–Nyliner
18 105797 2 Ring–Retaining
19 116745 1 Rod–Grill Pivot
20 116746 1 Bracket–Grill RH
22 3290–378 1 Tie–Cable
23 94–3736 1 Plate–Logo
24 92–9826 1 Decal–Front Hood
25 92–9835 1 Decal–Hood RH
27 92–9834 1 Decal–Hood LH
28 112358 1 Hood & Grill Asm
27
11
12
17
13
14
Sheet No.: 2
1
3318–525 REV . B
5 6 8 9
7
10
11
23
34
9
17
33
RH 31
LH 32
4
3
2
1
19
20
22
35
24
25
26
27
287303
23
12
13
14
15
16
17
18
21
21:1
Sheet No.: 3
Frame Axle and Steering System
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 6472 1 Bearing–Flanged
2 323–6 2 Screw–HH
3 3296–6 4 Nut–Lock
4 78–2880–01 1 Shaft–Steering
5 88–2710–01 1 Support–Lower
Steering
6 323–8 2 Screw–HH
7 302–11 2 Fitting–Grease
8 6397 1 Bearing–Bronze
9 1278 3 Washer–Shim
10 32136–5 1 Nut–Slotted
11 3272–19 1 Pin–Cotter
15 32121–111 1 Pin–Spiral
16 109189 1 Bearing–Flange
17 5210 14 Washer–Shim
18 3272–21 1 Pin–Cotter
19 92–3129 1 Shaft–Steering
20 237–69 1 O–Ring
21 94–3519 1 Wheel–Steering
21:1 88–3870 1 Cover–Steering Wheel
22 94–6673–01 1 Frame
23 3296–39 4 Nut–Lock
24 322–1 1 Screw–HH
25 3253–4 1 Washer–Lock
26 6216 1 Pin–Pivot
27 5638–01 1 Axle–Front
28 302–5 2 Fitting–Grease
30 5618 1 Ring–Retaining
31 113382–01 1 Spindle–RH
32 113381–01 1 Spindle–LH
33 78–2900 2 ASM–Rod
34 32120–93 2 Snap Ring
2
33
15
14
4
43
9
8
7
42
6
41
5
4
3
2
1
16
2
16
40
10
44
5
17
45
18
46
19
21
22
38
2
16
11
12
13
5
5
14
15
47
16
27
3318–525 REV . B
23
24
25
26
37
28
16
24
32
39
31
Hoodstand, Console
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 113023–03 1 Bracket–Fender
2 3256–23 8 Washer–Flat
3 322–5 2 Screw–HH
4 9108392 6 Screw–Phcr
5 9108372 12 Screw–Phcr
6 79–6770–03 1 Plate–Top Hoodstand
7 115620 1 Cover–Console
5–Gage
8 9202704 4 Washer–Flat
9 118410 1 Cover–Steering Shaft
10 118780 4 Screw
11 32115–5 12 Nut–Retainer
12 32128–33 2 Nut–Hex Flange
13 117267–03 1 Panel ASM
14 117433 2 Rivet–Pop
15 117343 2 Latch–Hood
16 3296–29 18 Nut–Lock
17 113928–03 1 Plate–Hoodstand
18 9266944 10 Screw–HH
19 9109484 2 Screw–Phcr
20 114628 1 Bracket–Switch
21 94–1839 1 Sensor–Air Clnr
Vacuum
22 9157324 2 Nut–Lock
23 79–4890–03 1 Panel–Side LH
24 116000 4 Screw–CARR
27
29
2
35
27
30
161827
36
16
34
Sheet No.: 8
25 113932–03 1 Stiffener–Panel
26 322–2 2 Screw–HH
27 322–3 8 Screw–HH
28 116309–03 1 ASM–Support
29 79–5120–03 1 ASM–Hoodstand
30 9000369 2 Bolt–CARR
31 78–1540–03 1 Bracket–Control
32 113962–03 1 Panel–Side
33 8830 1 Retainer–”J”
34 117191–03 1 Bracket–Holder
35 108457 1 Nut–Push On
36 117257 1 Tie– Snap In
37 3290–378 2 Tie–Cable
38 114767 1 Clamp–Hose.32d
X.31w Blk
39 92–9833 2 Decal–520 Hydro
40 114621 1 Decal–Noise
41 93–7314 1 Decal–Danger
42 93–9351 1 Decal–Brake
43 93–7338 1 Decal–Lights
44 93–9396 1 Decal–Dash
45 93–7847 1 Decal–Clutch
46 93–7337 1 Decal–Danger
47 93–7846 1 Decal–System
48 117432 2 Poprivet
3
3318–525 REV . B
RH 1
LH 2
5
19
3
8
17
5
12
16
7
13
11
14
15
11
6
7
8
9
10
11
Sheet No.: 9
Footrest & Hoodstand Side Covers
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 94–3710 1 Mat–Foot RH
2 94–3712 1 Mat–Foot LH
3 3290–479 16 Fastener–Panel
5 107069 6 Nut–Retainer
6 79–5130–01 1 Cover–Side LH
7 9108372 2 Screw–Phcr
8 116000 4 Screw–CARR
9 94–3522–01 1 Footrest LH
10 7456 4 Clamp
11 3296–29 5 Nut–Lock
12 3230–1 1 Bolt–CARR
14 108457 1 Nut–Push On
15 9266944 1 Screw–HH
16 94–3725–01 1 Belt–Guard
17 94–3521–01 1 Footrest RH
4
3 65421
3318–525 REV . B
11
18
20
17
1:2
1:1
1:3
16 (2)
19
15 (2) 14 (2) 13
2:1
&
6:1
4:1
4:2
2:2
6:2
&
2:3
&
6:3
12
11
17:2
17:1
7
8
T
O
R
O
7
8
9
5:3
5:2
5:1
10
Sheet No.: 12
Gauges, Warning Lights & Controls
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 78–0060 1 Tachometer
1:1 3217–27 3 Nut–HH
1:2 3255–25 3 Washer–Lock
1:3 78–0090 1 Bracket–Mounting
2 78–0040 1 Gauge–Fuel
2:1 3217–27 3 Nut–HH
2:2 3255–25 3 Washer–Lock
2:3 78–0080 1 Bracket–Mounting
3 92–9844 1 Switch–Light
4 94–3723 1 Hourmeter
4:1 32149–9 2 Nut/Washer–Lock
4:2 94–1849 1 Cup–Retainer
5 79–2660 1 Gauge–Vacuum
5:1 3217–27 2 Nut–HH
5:2 3255–25 2 Washer–Lock
5:3 78–0100 1 Bracket–Mounting
6 78–0030 1 Voltmeter
6:1 3217–27 1 Nut–HH
6:2 3255–25 1 Washer–Lock
6:3 78–0080 1 Bracket–Mounting
7 9107922 4 Screw–Phcr
8 66–0120 2 Knob
9 62–7770 2 Key–Ignition
10 114027 1 Control–Choke
11 9157404 4 Nut
12 114641–03 1 Stop–Choke
13 79–2130 1 Circuit Board–8 Light
14 3256–21 2 Washer–Flat
15 3253–15 2 Washer–Lk
16 9107834 2 Screw–Phcr
17 111216 1 Switch–Ignition
17:1 101884 1 Nut–Hex
17:2 9201604 1 Washer–Lock
18 115392 1 Control–Throttle
19 79–0450 4 Lamp–Mini
5
3318–525 REV . B
12
11
31
9
8
7
6
13
14
15
29
5
4
3
2
1
25
30
222324262728
16
17
18
19
20
21
Sheet No.: 14
Hydraulic Lift System
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 108365 2 Fitting–Tube
2 3272–1 1 Pin–Cotter
3 9321204 1 Pin–Clevis
4 114000 1 Valve ASM – Hyd
5 3296–42 2 Nut–Lock
6 5983 1 Bushing
7 933198 1 Pin–Spirol
8 116302 1 Arm–Control
9 116305–03 1 Bracket–Control
11 321–4 1 Screw–HH
12 117328 1 Rod–Lift Control
13 94–3700 1 Knob–Lift
14 3296–29 2 Nut–Lock
15 3256–23 2 Washer–Flat
16 104841 1 Spring
17 78–5640 1 Valve Actuator Bar
ASM
18 106267 1 Grommet
19 110125 1 Hose ASM–Hydraulic
20 9329974 1 Pin–Clevis
21 3272–11 1 Pin–Cotter
22 119340 1 Cylinder–Hydraulic
23 9202324 1 Washer–10 GA
24 101757 1 Spacer
25 110124 1 Hose ASM–Hydraulic
26 321–11 2 Screw–HH
27 102628 1 Fitting–Tube
28 94–1802 1 Tube ASM–Hyd
Return
30 94–1576 1 Sleeve–Protective
31 3296–8 1 Nut–Lock
6
3318–525 REV . B
12
13
12
11
10
9
22
8
23
19
17
18
7
1
6
5
4
3
2
1
21
20
8
8
13
16
9
10
11
14
15
Sheet No.: 15
Hydraulic Lift System
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 9335054 2 Hairpin
2 3256–26 1 Washer–Flat
3 322–6 1 Screw–HH
4 106522 1 Chain–Lift
5 6739 1 Trunnion
6 3296–39 1 Nut–Lock
7 78–1550 1 Lever–Lift
8 3296–29 2 Nut–Lock
9 106269 2 Bearing–Flange
10 3256–62 2 Washer–Flat
11 32151–91 2 Ring–Retaining
12 8830 1 Retainer–”J”
13 322–2 1 Screw–HH
14 1121 1 Key
15 121100 1 Lift Arm ASM
16 9335074 2 Cotter–Hairpin
17 6229 1 Bearing
18 32120–47 1 Ring–Retaining
20 3256–23 1 Washer–Flat
21 113445–01 1 Bar–Lift
7
3318–525 REV . B
3
2
1
40
8
7
3
2
39
38
44
6
5
4
11
13 14 15 16 171911 18
444241109
12
16
17
11
19
20
21
22
23
1
24
25
1
37
36
35
34
Hydro Controls, Brake System
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 5983 3 Bushing
2 117329 1 Rod–Control
3 94–6668 1 Knob–Control
4 933198 1 Pin–Spirol
5 116321 1 Arm–Control
6 116324 1 Rod & Balljoint ASM
7 118660 1 Guide–Control
8 32121–94 1 Pin–Spirol
9 78–5711 1 Bracket–Control
10 321–4 2 Screw–HH
11 3220–1 3 Nut–HH
12 3296–42 1 Nut–Lock
13 116407 1 Rod End
14 3217–5 1 Nut–Hex
15 113454–03 1 ASM–Cam Control
16 100304 2 Bearing–Cam Roller
17 110189 2 Rod End ASM
18 108904 1 Rod–Control
19 3256–22 2 Washer–Flat
20 321–9 1 Screw–HH
21 9114584 1 Screw–HH
22 100656 1 Bearing–Cam Return
23 32120–47 3 Ring–Retaining
24 323–23 1 Screw–HH
25 3256–24 2 Washer–Flat
26 108496 1 Wa–Pivot
26
27
23
28
29
30
25
31
32
33
43
Sheet No.: 16
27 9266944 1 Screw–HH
28 9335044 1 Hairpin
29 103125 1 Spring–Extension
30 108680 1 Spring–Compression
31 3296–39 1 Nut–Lock
32 94–3707–01 1 Pedal–Brake
33 111383 1 Collar w/Set Screw
33:1 3245–32 1 Screw–Set
34 302–5 1 Fitting–Grease
35 1278 1 Washer–Shim
36 94–6654–01 1 Rod–Brake
37 3272–10 1 Pin–Cotter
38 101853 1 Spring–Compression
39 3296–4 1 Nut–Lock
40 9157324 2 Nut–Lock
41 115230 1 Switch–Clutch
42 9109484 2 Screw–Phcr
43 94–6683 1 Sleeve–Protective
44 3296–8 3 Nut–Lock
8
3318–525 REV . B
4321
41 4342
5
6
33
32
31
30
34
29
35
28
36
27
37
26
38
25
24
19
23
22
39
40
21
18
20
7
8
9
19
15
16
9
KOHLER
ENGINE
SHOWN
Sheet No.: 17
Hydro Drive, Parking Brake
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 32128–19 1 Nut–Lock
2 78–8500–03 1 Pawl–Parking Brake
3 102025 1 Spacer
4 9202414 1 Washer–Flat
5 933135 1 Pin–Spirol
6 118860 1 Knob–Parking Brake
7 323–9 1 Screw–HH
8 323–8 1 Screw–HH
9 3256–4 2 Washer–Flat
15 108717 1 Spacer–Cam Plate
16 108716–03 1 Plate–Neutral Cam
18 3296–39 1 Nut–Lock
19 32120–47 1 Ring–Retaining
20 7879 1 Bushing
21 3765 1 Washer–Shim
22 114823 1 Washer–Curved
Spring
23 78–6020 1 Idler Arm ASM
24 3217–5 1 Nut–Hex
25 107938 1 Spring–Extension
26 3296–42 1 Nut–Lock
29 114895 1 Belt–Hydro Drive
30 323–8 1 Screw–HH
31 112791 1 Pulley–Idler
39 321–6 1 Screw–HH
40 83–2820 1 Spring–Extension
41 9109484 2 Screw–Phcr
42 111332 1 Switch–Interlock
43 9157324 2 Nut–Lock
9
3318–525 REV . B
8
7
6
5
26
36
12
11
10
9
27
28
13
14
15
16
9
17
25
18
9
4
20
21
10
33
4
3
2
23
1
24
32
31
30:1
Fender, Seat & Tail Lights
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 322–5 4 Screw–HH
2 3253–4 4 Washer–Lock
4 3296–29 6 Nut–Lock
6 109989 4 Spacer
8 94–3518 1 Seat V–811
9 9266944 10 Screw–HH
10 322–4 6 Screw–HH
11 3256–23 4 Washer–Flat
12 111071 2 Bumper–Rubber
13 78–2990–03 1 Plate–Seat Pivot
14 3296–8 2 Nut–Lock
15 3256–22 2 Washer–Flat
16 114344 2 Spacer
17 114345–01 1 Bracket–Gas Spring
18 114343 1 Spring–Gas
20 105524 2 Bracket–Pivot
21 105503 2 Bushing
22 94–3722–01 1 Fender
23 110920–03 2 Spring–Seat
25 321–8 2 Screw–HH
26 38–1420 1 Switch–Seat
27 3023 3 Clip
28 3296–27 4 Nut–Lock
29 3254–1 4 Washer–Lock
30 105202 2 Base–Light
30:1 109045 2 Lamp–Wedge
30
29
35
28
22
27
34
Sheet No.: 21
31 3250–31 4 Screw–Phcr
32 112564 2 Lens–Light
35 93–7849 1 Decal–Do Not Tow
36 92–9827 1 Decal–Fender
10
27
26
25
24
23
7
3
5
4
3
2
1
13
14
15
28
16
3318–525 REV . B
8
12
10
11
9
25
21
20
PTO Clutch And Cover
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 113108 1 Rod–PTO Housing
2 102872 1 Shaft–PTO
3 32120–72 2 Ring–Retaining
4 32120–62 1 Ring–Retaining
5 109842 1 Bearing–Ball
7 103478–01 1 Housing–Clutch
8 94–6650 1 ASM–Plate
9 7443 1 Pulley–Engine
10 105453 1 Key–Sq
11 3246–2 2 Screw–HSH Set
12 6659 2 Retainer
13 6658 1 Race–Bearing
14 9080026 4 Screw–Lock
15 6663 1 Seal–Oil
16 6662 1 Bearing–Needle
17 32128–40 1 Nut–Lock
18 94–3726–01 1 Wa–Bracket
19 323–6 1 Screw–HH
20 106695 1 Ring–Push On
21 94–3704 1 Belt Cover–PTO
22 94–3735 2 Nut–Wing
23 9335064 1 Hairpin
24 3256–27 1 Washer–Flat
25 933274 1 Pin–Spirol
26 113107 1 Clevis
17
18
19
Sheet No.: 22
27 111314 1 Lock Pin ASM
28 94–3729 1 Retainer–Bolt
11
3318–525 REV . B
7
6
5
4
1
3
2
23
8 9 10 11
22
20
21
19
12 13
17
18
16
24
14
15
25
26
27
PTO Clutch System
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 94–3727 1 Knob
2 94–3701 1 Rod–PTO Control
3 32151–11 1 Ring–Grip
4 5666 1 Bushing–Nyliner
5 3272–10 3 Pin–Cotter
6 5983 1 Bushing
7 103125 1 Spring–Extension
8 3765 1 Washer–Shim
9 3218–1 2 Nut–Jam
10 3253–3 2 Washer–Lock
11 3256–22 2 Washer–Flat
13 113874–03 1 Bracket–PTO
14 3253–21 2 Washer–Lock
15 323–7 2 Screw–HH
16 104859 1 Spacer–Link
17 110669 1 Plate–PTO
18 3296–59 1 Nut–Lock
19 110656 1 Trunnion
20 3229–25 2 Screw–CARR
21 9335054 1 Hairpin
22 94–6652 1 ASM–Brake
23 111052 1 Rod–PTO Clutch
24 94–1584–03 2 Bar–Support
25 3256–23 1 Washer–Flat
26 94–1587–03 1 Wa–Guard
27 9266944 1 Screw–HH
Sheet No.: 24
12
28
3318–525 REV . B
1
2
3
4
24
27
26
25
23
22
21
20
19
18
5
6
7
30
8
9
10
11
12
13
14
29
17
17
Sheet No.: 26
Engine Assembly
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 114888 2 Screw
2 94–6664 1 Shield–Heat
3 94–1803–03 1 Baffle–Deflector
4 49–2040 3 Screw–HH
5 116471 1 Muffler
6 114216–03 1 Cover–Exhaust Rear
7 94–1811 1 Engine–Onan
8 114636 1 Nipple
9 114764 1 Elbow–90
10 114763 1 Nipple
11 288–4 1 Cap–Pipe
12 323–6 4 Screw–HH
13 8830 2 Retainer–”J”
14 116609–03 1 Plate–Engine
17 3296–39 8 Nut–Lock
18 3256–24 4 Washer–Flat
19 323–8 4 Screw–HH
20 114215–03 1 Cover–Exhaust Front
21 57–9210 2 Gasket–Manifold
22 3253–4 4 Washer–Lock
23 322–3 4 Screw–HH
24 94–9700–03 1 Shield–Heat
25 32144–28 4 Screw–Phcr
26 93–9287–03 2 Bar–Guard
27 94–9701 4 Spacer
28 32144–110 4 Screw–HWHTF
29 118530 1 Name Plate–Toro
Logo
30 118560 1 Decal–Power Plus 20
13
3318–525 REV . B
7
6
5
4
3
2
8
9
10
11
12
13
14
15
16
17
18
20
21
19
50
40
48
39
38
1
37
43
42
47
51
28
30
31
29
41
44
45
46
3649
35
34
31
32
25
26
33
23
24
27
Sheet No.: 28
22
Transmission Control & Filter Assembly
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 110768–03 1 Dipstick
2 108326–03 1 Spacer–Pivot
3 100365 2 Washer–Spring Disc
4 100305 2 Washer–Friction
5 108333 1 Plate–Cam
6 100309 1 Bushing–Cam Pivot
7 108881 2 Nut–Hex
8 9080196 1 Screw–HH
9 106661 1 Cam–Eccentric
10 108325 1 Arm–Speed Control
11 3296–45 1 Nut
12 3256–26 1 Washer–Flat
13 79–5270 1 Filter–Oil
14 5991 1 Fitting–Filter
15 108323 1 Base–Filter
17 106719 1 Drum–Brake
18 109371 1 Brake Band
19 3272–6 2 Pin–Cotter
20 2844 1 Washer–Flat
21 3235–22 1 Screw–HH
22 3256–24 2 Washer–Flat
23 3296–39 1 Nut–Lock
24 3256–4 1 Washer–Flat
25 78–7740–01 1 Pivot Arm–Brake
26 109356 1 Bushing–Pivot
27 79–5020 1 Tube Cmplt– Flatr To
Pump
28 102628 1 Fitting–Tube
29 323–9 1 Screw–HH
30 3257–24 1 Key–Woodruff
31 108365 2 Fitting–Tube
32 3253–21 4 Washer–Lock
33 323–7 4 Screw–HH
33 94–6672 1 Transaxle ASM
34 94–6679 1 Transaxle/Intl
Decal
35 108316 1 Pulley–Hydro
36 108393 1 Fan–Hydro
37 322–3 2 Screw–HH
38 3253–4 2 Washer–Lock
39 108327 1 Spacer–Pivot
40 106448 1 Nipple–Trans Filler
41 113193 1 Sensor–Hydro Oil
Temp
42 94–5592 1 Decal–Danger
43 94–1834 1 Decal–Unidrive
44 3243–5 4 Screw–Set
45 3218–3 4 Nut–HJ
46 105763–03 2 Hub–Wheel
47 937108 2 Key–Woodruff
48 937089 2 Key–Woodruff
14
7
6
5
4
3
2
8
9
10
11
12
13
14
15
16
18
17
3318–525 REV . B
20
21
19
50
40
48
39
38
1
37
43
42
47
51
28
30
31
29
41
44
45
46
3649
35
34
31
32
25
26
33
23
24
27
Sheet No.: 28
22
Transmission Control & Filter Assembly
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
49 103995 1 Washer
50 9080026 1 Screw–Lock
51 106826 2 Washer–Thrust
15
3318–525 REV . B
3:2
3:1
3
2
17
1
16
1:1
Rear W / T 312, 314, 416 & 520
Front W / T 314, 416, & 520
Front W / T 312-8 & 520 He
16
16
3:3
18
10:4
10:6
10:1
10
7
9
8
10:4
6
5
4:1
4
4:1
4
18
10:6
15
7
14
13
12
10:2
10:5
10:1
11
10:3
14
10:3
1010:2
Sheet No.: 29
Wheel Assemblies
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
2 83–2720 10 Bolt–Lug
3 2 ASM–Wheel & Tire
3:1 111516 2 Wheel
3:2 116744 2 Tire
3:3 5108 2 Valve–Tire Tubeless
7 3272–17 2 Pin–Cotter
10 93–9800 2 ASM–Wheel & Tire
10:1 93–9801 2 ASM–Wheel w/Zerk
10:2 110513 4 Bearing–Wheel
10:3 5108 2 Valve–Tire Tubeless
10:4 117127 2 Tire
10:6 109500 2 Fitting–Grease
12 111951 2 Cap–Hub
13 111952 2 Washer
14 1278 4 Washer–Shim
15 5210 2 Washer–Shim
16
3318–525 REV . B
20
18
25
24
23
27
22
26
5 6 7
1
28
17
18 1516
29
1
12
14
3
Sheet No.: 30
14
2
20
18
29
4
3
19
8
9
10
11
Hitch Assembly
DescriptionPart No. Qty.Ref. No. DescriptionPart No. Qty.Ref. No.
1 323–44 6 Screw–HH
3 102644–01 2 Plate–Hitch
4 108881 6 Nut–Hex
5 105269 1 Pin–Drawbar Hitch
6 9791204 2 Spacer
7 1644–01 1 Hitch ASM
8 106634 1 Pin–Tool
9 3256–26 1 Washer–Flat
10 9335054 1 Hairpin
11 5618 2 Ring–Retaining
12 9038 1 Grip
14 105316 2 Cap–Rod
15 101017 1 Lock–Hitch
16 83–6520 1 Rod–Lock
17 117930 1 Latch ASM–Mid
18 105797 8 Ring–Retaining
19 101750 1 Rod–Latch Pivot
20 8616 2 Spring
22 93–1613 1 Latch–Front
23 101707 1 Lock–Attachment
24 3296–39 3 Nut–Lock
25 101711–01 1 Plate–Front Hitch
26 3231–25 3 Screw–CARR
27 101751 1 Rod–Lock
28 8830 1 Retainer–”J”
29 92–8747 2 Decal–Attach A Matic
17
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