Cub Cadet 53AI8CT8050 Setup guide

Hydrostatic Zero-Turn
Commercial Riding Mower
Professional Turf Equipment
ILLUSTRATED PARTS LIST
72" Fabricated Deck

2
TABLE OF CONTENTS
Frame Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
72" Fabricated Cutter Deck. . . . . . . . . . . . . . . . . . . . . . . . . 4 and 5
72" Spindle Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 and 7
Hydro Hose and Pump Assembly. . . . . . . . . . . . . . . . . . . .8 and 9
Brake Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 and 11
Fuel Tank Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Rear Bumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Front Caster Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 14 and 15
Control Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 and 17
Wheel Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Seat/Floor Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
37 HP Kawasaki Engine Assembly. . . . . . . . . . . . . . . . . 20 and 21
Electrical Assembly Kawasaki . . . . . . . . . . . . . . . . . . . . 22 and 23
Lift Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 and 25
FXT00V 37HP Engine Breakdown . . . . . . . . . . . . . . . . . . . . 26-37
Right and Left Hand Wheel Motor Breakdown . . . . . . . . 38 and 39
Right Hand BDP-12 Hydraulic Pump Breakdown. . . . . . 40 and 41
Left Hand BDP-12 Hdraulic Pump Breakdown. . . . . . . . 42 and 43
Decal Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
MODELS LISTED IN THIS MANUAL
37HP Tank
53AI8CT8050

3
Frame Assembly
GD: 02005313-12/20/07
- Figure 1 and Parts List
Ref.
No. Part No. Description Qty.
100012152 Lock Nut w/Nylon Insert 2
200022560 Hex Nut, 3/8-16 Flange Lock 10
301000372 Carriage Bolt, 3/8-16 x .75 Long 7
401000643 Carriage Bolt, 3/8-16 x 1 2
501001170 Rubber Bumper, .62 OD x .22 Thick 6
601001776 Clevis Pin, .500 Dia. x 2.50 Lg. 1
701002511 Nut, 3/8-16, Jam 1
801003282 Clevis Pin, .625 Dia x 4.375 Long 2
901003993 Linch Pin, 3/16 Dia. 2
10 02005101 Lift Index Bracket 1
11 01005810 Hex Cap Screw 3/8-16 x 2.00 1
12 01007776 Bracket Assembly, Frame, Front 1
13 01008225 Push Retainer, 3/8 4
14 01010119 Nut, 1/2-13, Flangelock 1
15 02002655 Spacer, .51 ID x .75 OD x 1.40 1
16 02003074 HitchPin, .120 Dia. x 3.0 1
17 02003505 Flat Head Cap Screw, 1/4-20 x .75 2
18 02003536 Frame Assembly 1
19 02003563 Carriage Bolt, 1/2-13 x 3.00 1
20 02003749 Wear Plate, 1.25 x 5.00 1

4
72" Fabricated Cutter Deck - Figure 2
GD: 02004857-01/24/08

5
72" Fabricated Cutter Deck - Parts List for Figure 2
Ref.
No. Part No. Description Qty.
100011925 Hex Cap Screw, 3/8-16, 4.00 2
200012158 Flat Washer, 3/8 2
300012428 Lock Nut, Nylon Insert, 1/2-13 5
400014608 Lock Nut, Nylon Insert, #10-32 16
500017778 Phillips Head Screw, #10-32 x 1/2 16
600022560 Flange Lock Hex Nut, 3/8-16 54
701000343 Complete Wheel, 5.00 Dia. 6
801000372 Carriage Bolt, 3/8-16 x .75 Lg. 35
901000385 Front Roller 4
10 01000398 Wheel Spacer 4
11 01000643 Carriage Bolt, 3/8-16 x 1 6
12 01001169 Grass Catcher Roller 2
13 01001745 Pin, 5/8 Dia. x 1.2 Lg. 4
14 01002010 Carriage Screw, 3/8-16 x 1.25 7
15 01003253 Torsion Spring, 0.4ID x 2.16Lg 1
16 01004304 Hex Index Washer Screw, 3/8-16, .5 8
17 01004684 Belt Cover Support 2
18 01004707 Deck Roller Mount Bracket 3
19 01005438 Outer Belt Cover Support Assembly 2
20 01005869 T-Handle Latch Draw 4
21 01008526 Finger Guard 1
22 01009102 Pin, .375 x 14.06 1
23 01009705 Chute Deflector 1
24 01009842 Discharge Baffle Weldment 1
25 01010119 Nut, 1/2-13, Flangelock 2
26 02000109 Pillow Block, Steel 3
27 02000110 Pillow Block, Steel 1
28 02002800 J-Hook w/ Threaded Roller 1
29 02004410 Right Hand Deck Belt Cover 1
30 02004403 Left Hand Deck Belt Cover 1
31 02002911 Right Hand Deck Lift Bracket 1
32 02002912 Left Hand Deck Lift Bracket 1
33 02004833 Shoulder Bolt, .625 x 3.00 x 3/8-16 2
34 02005696 Baffle, 72" Adjustment 1
35 02004868 Right Hand Front Adjustment Skirt 1
36 02004869 Left Hand Front Adjustment Skirt 1
37 02004872 72" Deck Assembly 1
38 02004874 Chute Deflector Bracket 1
39 02005195 Chute Baffle 1
40 01008049 Carriage Bolt, 3/8-16 x 4.00 2
41 712_0641 Hex Nut, M16-1.5 2
42 721_04041 Water Nozzle Adaptor 1
43 736_0760 Lock Washer, 17 x 23.8 x 1.95 2
44 737_04003C Deck Water Nozzle 2

6
72" Fabricated Deck Spindle Assembly - Figure 3
GD: 02004950-12/20/07

7
72" Fabricated Deck Spindle Assembly - Parts List for Figure 3
Ref.
No. Part No. Description Qty.
100005763 Hex Nut, 7/16-14 1
200008495 Hex Cap Screw, 3/8-16 x 1-3/4 1
300011438 Hex Cap Screw, 3/8-16 x 1-1/2 12
400011861 Hex Cap Screw, #/8-16 x 2-1/2 1
500011925 Hex Cap Screw, 3/8-16, 4.00 1
600012158 Flat Washer, 3/8 12
700022560 Flange Lock Hex Nut, 3/8-16 20
800060078 Grease Fitting, 1/4-28 x 3/16 2
900083192 Idler Washer 1
10 01000302 Shoulder Screw, 7/16-14 1
11 01000364 Hex Carriage Screw, 3/8-16, 1.75 1
12 01000380 Flange Hex Nut, 3/4-16 3
13 01000387 Torsion Idler Spring 1
14 01000389 Lock Washer, 7/16 1
15 01000392 Flat Washer, .781 ID 2.00 OD, .105 1
16 01000393 Flat Washer, .469 ID, .875 OD, .105 1
17 01000643 Carriage Bolt, 3/8-16 x 1 3
18 01000723 Flat Washer, .406 ID, 1.0 OD, .105 6
19 01002751 Spacer, .39 ID x .63 OD x 1.75 1
20 01002771 Cotter Pin, .072 x 1.12 Long 2
21 01003123 Spacer .812 ID x .268 LG 2
22 01003245 Spacer, .39 ID x .625 OD x 2.75 1
23 01004478 Aluminum Spindle Support Plate 3
24 01007499 V-Pulley, 5.75 OD 3
25 01007786 Idler Arm Assembly includes: 1
01000308 Bearing Sleeve 2
26 01007937 V-Belt, B Section x 124.0 Lg 1
27 01008018 Spacer, .760 ID x 2.00 OD x .330 3
28 01008222 Tension Idler U-Bracket 1
29 01008247 Handle Tension Weldment 1
30 01008270 Tension Idler Handle Grip 1
31 01008542 Hex Cap Screw, 3/4-16, 7.50 2
32 01008543 Hex Cap Screw, 3/4-16, 9.50 1
33 01010014 Spacer, .76 ID x 2.0 OD x .790 1
34 02000568 Bahia Blade, 25.0, .756 ID 3
35 02000920 Aluminum Spindle Assembly 3
36 02001574 Spring Tension Rod 1
37 02003489 Idler Arm Assembly includes: 1
01000308 Bearing Sleeve 2
38 02004063 Adaptor Plate 1
39 02004069 Extension Spring, .94 OD x 7.72 Lg 1
40 02004377 V-Belt, B Section x 107.0 1
41 02004379 V-Pulley, 7.450 OD x .750 Bore, Cast 1
42 02004447 Idler Pulley, 4.06 OD 1
43 02005077 Idler Pulley, 4.06 Dia. 1
44 02005079 Idler Pulley, 5.06 Dia. 1
45 00002528 Hex Cap Screw, 3/8-16 x 2.00 1

8
Hydro Hose and Pump Assembly
Pump & Motor Systems
3/4" Hose
11.0" LG.
3/4" Hose
16.0" LG.
3/4" Hose
16.0" LG.
3/4" Hose
12.0" LG.
3/4" Hose
12.0" LG.
3/4" Hose
12.0" LG.
Pilot &Drain Systems
Motor Mount Systems
GD: 02004445-01/10/08
- Figure 4

9
Hydro Hose and Pump Assembly- Parts List for Figure 4
Ref.
No. Part No. Description Qty.
102002392 Hose Clamp, 1/2 12
200012428 Washer lock 3/8 zinc 8
300020628 Key, 3/16" x 7/8" 2
400022560 Flange Lock Hex Nut, 3/8-16 22
500030261 Cap, Hydro Oil Tank 1
601002539 Hex Cap Screw 3/8-16 x 4.50 2
701000369 Hex Cap Screw, 3/8 -16 x 1.25 2
801000372 Carriage Bolt, 3/8-16 x .75 LG. 6
901009906 Carriage Bolt, 3/8-16 x 5.00 2
10 01000643 Carriage Bolt, 3/8-16 x 1 4
11 01002010 Carriage Screw, 3/8-16 x 1.25 4
12 01002593 Strut Frame 2
13 01004192 Oil Pan Drain Plug w/ Seal 1
14 01006948 Hydro Wheel Motor Backup Plate 2
15 01007309 Hex Nut, 3/8-24 2
16 01008449 Socket Head Capscrew, 1/2-13; 6-1/2 8
17 02000296 Grommet Fitting, .54 ID x .78 OD 1
18 02000401 Spring Extension, .740 OD x 2.656 2
19 02000841 Socket Low Head Cap Screw, 1/4-20 x 0.75 2
20 02000905 Hydro Pump, BDP-12, RH 1
01009631 Kit, Fan 1
21 02000906 Hydro Pump, BDP-12, LH 1
01009631 Kit, Fan 1
22 02001151 Fitting Elbow Spur, 5/8 x 1/2 1
23 02001160 Fitting Elbow, 9/16 x 1/2 4
24 02001169 Fan Pump Shroud 2
25 02001172 Hydro Pump Pulley 2
26 02001178 Short Pressure Hose Assembly 2
27 02001179 Long Pressure Hose Assembly 2
28 02004648 Hydro Motor Frame Assembly 1
29 02001715 Adaptor Fitting, 8 x 10 4
30 02002003 Adaptor, 8 x 8 4
31 02002257 Hydraulic In-Tank Filter includes: 1
02002258 Replacement Filter 1
32 02002557 Fitting, 3/4 ORB x 1/2 Tube 1
33 02002701 Hydraulic Tank Assembly 1
34 02002899 Rear Cable Mounting Bracket 2
35 02004442 Hydro Motor, Left Hand Assembly w/ Brake & Drum 1
36 02004441 Hydro Motor, Right Hand Assembly w/ Brake & Drum 1
37 00083192 Idler Washer 2
38 -- Fuel Hose, .50 ID x .75 OD (in inches) 79
39 02001175 Tee Fitting, 1/2 2
40 00006168 Flat Washer, 3/8 2
NOTE: Lubricant, 02002058 Quarts, 2.00

10
Brake Assembly
GD: 02002926-10/31/07
- Figure 5

11
Brake Assembly - Parts List for Figure 5
Ref.
No. Part No. Description Qty.
100012577 Washer, 1/2 Zinc 1
201000643 Carriage Bolt, 3/8-16, 1.00 1
300011450 Shoulder Bolt, 1/2 x 1/2 1
400014608 Lock Nut, Nylon Insert, 10-32 3
500022560 Flange Lock Hex Nut, 3/8-16 6
600030906 Phillips Head Machine Screw, 10-32 x 5/8 3
701000372 Carriage Bolt, 3/8-16 x .75 2
801000443 Screw Button Head, 1/4-20 x .5 18
901000628 Screw, TT, 1/4-20, 0.5, Hex Index Washer 10
10 01000930 Washer, .508 ID x 1.0 OD x .020 4
11 02003841 Centering Bracket 1
12 01008198 Left Hand Brake Cable 1
13 01008225 Push Retainer, 3/8 2
14 01008531 Screw, #10-32 x 0.500 2
15 01008539 U-Nut, 1/4-20 18
16 02000362 Bag, Debris Storage 1
17 02002785 Lower Panel, LH 1
18 02002786 Lower Panel, RH 1
19 02002806 Control Panel Cover, LH 1
20 02002852 Control Panel Cover, RH 1
21 02002864 Brake Cable Mounting Bracket 2
22 02002874 Cup Holder 1
23 02002969 Control Panel, LH 1
24 02002970 Control Panel, RH 1
25 02003010 Parking Brake Grip 1
26 02003603 Shoulder Bolt, 1/2 x 1.00, 3/8-16 2
27 02003725 Washer, 3/16 2
28 02003770 Brake Cable, LH 1
29 02003774 Brake Cable, RH 1
30 02003776 Brake Cable Bracket 1
31 02005151 Brake Lever 1
32 00013131 Screw, Hex, Cap, 1/4-20 x .75 1
33 01002766 Lock Nut, 1/4-20 1

12
Fuel Tank Assembly
GD: 02001910-12/11/07
- Figure 6 and Parts List
Ref.
No. Part No. Description Qty.
100012470 Cable Tie 2
201000215 Hose Clamp, SAE #4: 1/4-5/8, SS 1
301000600 Flat Washer, 1.4 x .630 x .0515 1
401007425 Fuel Fitting 2
502001908 Fuel Hose Assembly includes: 1
-- Hose, 1/4" Fuel Line (in inches) 88
00012235 Clamp, Union 5
01003473 Tee Fitting, Fuel 1
602002253 Grommet, Fuel Tank 2
702003842 Fuel Tank 2
802005013 Hex Cap Screw, 3/8-16 x .500 8
9751-3124D Fuel Cap, 3.5 2

13
Rear Bumper
GD: 02005021-11/19/07
- Figure 7 and Parts List
Ref.
No. Part No. Description Qty.
100011459 Flat Washer, 1/2 2
200012428 Hex Nut, 1/2-13, Insert Lock 2
300022560 Nut, Hex 3/8-16 Flange Lock 2
400030046 HHCS, 1/2-13, 3.00 2
501000643 Carriage Bolt, 3/8-16 x 1.00 2
602004118 Bumper Assembly 1
702004120 Hitch Bracket 1

14
Front Caster Assembly
GD: 02005312-10/11/07
- Figure 8

15
Front Caster Assembly - Parts List for Figure 8
Ref.
No. Part No. Description Qty.
100012577 Washer, 1/2 x 1 Shim 2
200023287 Nut, 1/2-20, Center Lock 2
300060078 Grease Fitting 3
401000678 Nut, Jam, 1.0-14, Insert Lock 1
501002620 Cup Bearing 4
601002621 Bearing Cone 4
701002622 Seal 2
801002624 Ring Seal 4
901002626 Slotted Nut, 3/4-16 2
10 01002627 Cotter Pin, 5/32, 1.25 2
11 01003123 Spacer, .812 ID x .218LG 4
12 01006294 Bell Washer, 1.25 ID x 2.5 OD x .180 2
13 01006309 Hex Cap Screw, 1-14 x 5.0 1
14 01006347 Grease Cap, 1.986 OD 2
15 01006912 Wheel Spacer 2
16 01006961 HHCS, 1/2-20, 7.50 2
17 01007342 Yoke, Caster Wheel 2
18 01009997 Retainer Extension, Self Locking 1
19 02000588 Flat Washer, 1.00 ID x 2.00 OD x .075 2
20 02000589 Spacer, 1.005 ID x 1.25 OD x 3.6 1
21 02002821 Wheel, 13 x 6.50 x 6.0, Beige, includes 2
02002108 Tire 1
02002106 Roller Bearings (per tire) 2
02002107 Retainer Bushings (per tire) 2
22 02005308 Front Axle Assembly 1

16
Control Assembly
GD: 02005062-10/25/07
- Figure 9

17
Control Assembly - Parts List for Figure 9
Ref.
No. Part No. Description Qty.
Ref.
No. Part No. Description Qty.
100002528 Hex Cap Screw, 3/8-16 x 2.00 427 01007312 Spacer, .625 OD x .385 ID x 1/2 2
200012186 Hex Nut, 1/4-20 128 01007734 Tu r n b u ck l e 2
300013131 Hex Cap Screw, 1/4-20, .75 1 29 732-0470A Extension Spring, .53 OD x 4.75 1
400013198 Hex Cap Screw, 5/16-18 x 2.00 230 01008367 B/Joint, 3/8-24, Left Hand Female 2
500013416 HHCS, 1/4-20 x 1.00 131 01009322 Shoulder Bolt, 1/4 x 1/4 2
600021958 Grease Fitting, 1/4-28, 45 degree 232 01009377 Nut w/ Star Washer, 10-24 2
700022560 Hex Nut, 3/8-16, Lock Flange 12 33 01009560 Control Rod, 3/8 x 17.312 2
800061053 Washer, 3/8, SS 234 02000069 Screw, Shoulder Control Rod 3
902003666 Hex Cap Screw, 3/8-16 x 3.50 235 02002931 Lapbar Control Assembly, LH 1
10 01000372 Carriage Bolt, 3/8-16 x .75 801004265 Bearing 2
11 01000450 Hex Jam Nut, 3/8-24 436 02002542 Brake/Control Rod 2
12 01000451 B/Joint, 3/8-24, Right Hand Female 237 02002543 Lapbar Control Arm 1
13 01000600 Flat Washer, 1.4 x .630 x .0515 238 02004044 Lapbar Pivot Bracket 2
14 01000628 Screw, TT, 1/4-20, 0.5, Hex Index Washer 339 02002555 Lapbar Control Shaft Assembly 1
15 01000635 Nut, Lock, HexFlange, 5/16-18 940 02004382 Lapbar/Brake Control Mounting Bracket 1
16 01000960 Belle Washer, .325 x .930 x .045 241 02002932 Lapbar Control Assembly, RH 1
17 01006898 Hex Cap Screw, 1/4-20 x 2.00 401004265 Bearing 2
18 010 02511 Nut, 3/8-16, Jam 442 02004049 Lapbar Assembly includes: 2
19 01002766 Hex Flange Lock Nut, 1/4-20 602002662 Grip, 1.0 2
20 01002986 Nut, 3/8-24, Jam, LH Third 243 02003419 Bushing, .310 x .172 x .688 x .06 4
21 01003561 Nut, Hex, Center Lock, M8 444 02003653 Cylinder Return to Neutral 2
22 01003947 U-Nut, 3/8-16, .75 245 02003664 Spacer, .405 ID x 1.0 OD x .72 1
23 01004003 Flat Washer, 5/8 Nylon 446 02003883 Side Panel, Control, Left 1
24 01004129 Spacer, .385 ID x .75 OD x .875 247 02003884 Side Panel, Control, Right 1
25 01005851 External Washer, 3/8 248 01000956 Carriage Bolt, 5/16-18 x 1.75 4
26 01006350 Shaft Collar 249 02003644 Spacer, .251 ID x .38 OD x 1.13 LG 4

18
Wheel Assembly
2
1
GD: 02002669-10/04/06
- Figure 10 and Parts List
Ref.
No. Part No. Description Qty.
100012187 Lug Nut, 1/2-20 8
202002668 Wheel Assembly, 24 x 12.00-12, Beige
Includes:
2
00073975 Tire, 24 x 12.00-12, Turf Master
Rim, 12 Dia x 8.50 width
OPTIONAL TIRES
01002182 Wheel Assembly, 24 x 12.00-12, Turf Saver
01004473 Tire, 24 x 12.00-12, Turf Saver

19
Seat/Floor Panel Assembly
GD: 02005208-01/03/08
- Figure 11 and Parts List
Ref.
No. Part No. Description Qty.
Ref.
No. Part No. Description Qty.
100002528 Hex Cap Screw 3/8-16 x 2.00 118 02002334 Floor Panel Assembly 1
200006131 Hex Nut, 3/8-16 119 02002963 Rubber Stop with Washer 4
300012158 Washer AR 20 02002964 Standard Cap Screw, #10-24 x .75 4
400012168 Lock Washer, 5/16 421 02003404 Seat Plate Assembly 1
500012178 Hex Cap Screw, 5/16-18 x 1/2 422 02003730 Seat Latch Bracket 1
600013131 Screw, Hex, Cap, 1/4-20 x .75 223 02003732 Latch Lever Bracket 1
700021956 Hair Pin, 3/8-1/2 224 02003738 Latch Bracket 1
800022560 Flange Lock, Hex Nut, 3/8-16 525 02003745 Adjustable Stud 1
901000372 Carriage Bolt, 3/8-16 x .75 Long 226 02004062 Cable Support 1
10 01000523 Nut, #10-24, Nylon Lock 427 02005081 Foldable Rops Assembly includes: 1
11 01000628 Screw, TT, 1/4-20, 0.5, Hex Index Washer 2Knob 2
12 01000723 Flat Washer, .406 ID, 1.0 OD, .105 202004324 Pin, Lock 2
13 01001170 Rubber Bumper, .62 OD x .22 Thick 228 02005209 Seat w/ Seat Belt & Suspension 1
14 01002766 Lock Nut, 1/4-20 201008364 Right Hand & Left Hand Armrest Kit
15 01008140 Deck Lift Spring, Left Hand 102000767 Seat Switch Assembly
16 01009459 Shoulder Bolt, .375 x 1.50 229 712-04063 Flange Lock Nut, 5/16-18 2
17 02002091 Shoulder Bolt, 1/2 x 3/4, 3/8-16 1

20
37HP Kawasaki Engine Assembly - Figure 12
GD: 02003537-01/14/08
Description Part Number
Air Filter KM-11013-7038
Air Filter (Inner) KM-11013-7039
Fuel Filter KM-49019-7001
Oil Filter KM-49065-2078
Spark Plug KM-BPR5ES