Cub Cadet RZT 50 Zero Turn Mower Parts Catalog
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RZT 50
CUB CADET LLC P.O. BOX 361131 CLEVELAND, OHIO 44136-0019 [www.cubcadet.com]
PRINTED IN U.S.A. FORM NO. 769-01127D
TRACTORS
Model Numbers
(2/07)
RZT SERIES
Parts Manual
w/50" Mower Deck
-2-
DESCRIPTION PAGE
Frame and Drive Idler Assembly ..................................... 3
Electrical .......................................................................... 4
Operator’s Platform ......................................................... 6
Controls and Deck Lift ..................................................... 8
Rear Drive and Wheels ................................................... 10
Seat Adjustment .............................................................. 11
RH Transmission ............................................................. 12
LH Transmission ............................................................. 14
50" Mower Deck .............................................................. 16
Engine Connections ........................................................ 18
Front Axle ........................................................................ 20
Engine .............................................................................
Air Filter ........................................................................
Cylinder/Crankcase .......................................................
Pistons and Crankshaft ................................................
Camshaft and Valves ...................................................
Lubrication ....................................................................
Cooling .........................................................................
Flywheel / Electrical ......................................................
Engine Control ..............................................................
Carburetor ....................................................................
Fuel Filter/Pump ...........................................................
Starter ...........................................................................
21
22
24
25
26
27
28
29
30
31
32
TABLE OF CONTENTS
MODEL RZT 50
NOTE: For painted parts, please refer to the
list of color codes below. Please add the appli-
cable color code, wherever needed, to the
part number to order a replacement part.
For instance, if a part, numbered 700-xxxx, is
painted Cub Yellow, the part number to order
would be 700-xxxx-0716.
Cub Yellow: 0716
Cub Beige: 0499
Powder Black: 0637
-3-
REF.
NO.
PART
NUMBER DESCRIPTION QTY.
1 603-04303C
777D10717
777I22489
Frame Assembly ...............................
Graphic, Cub Cadet .......................
Graphic, Release Lever .................
1
1
2
2 703-05829 Idler Arm, Drive ............................... 1
3 710-0520 Screw, Hex Cap, 3/8-16 x 1.5 GR5 3
4 710-3005 Screw, Hex Cap, 3/8-16 x 1.25 GR5 1
5 712-04065 Nut, Hx Insert Flnge Lck, 3/-16 GrF 4
6 732-0626 Spring, Extension, .75 x 5.06 .......... 1
7 736-0300 Washer, Flat, .408 x .875 x .059 ..... 1
8 738-04058 Spacer, Shoulder, .39 x 1.0 x .7 ...... 2
9 738-04162A Spacer, Shoulder, .884 x .19 ......... 1
10 756-04129 Pulley, Idler, 4.25 Dia. ..................... 1
FRAME AND DRIVE IDLER ASSEMBLY
1
2
3
5
5
6
10
4
9
8
5
3
7
-4-
ELECTRICAL
8
5
6
7
9
13
6
17
10
12
16
1
18
Section of Main Wire Harness
(Reference Only)
21
3
4
19
11
14
15
15
4
2
20
-5-
REF.
NO.
PART
NUMBER DESCRIPTION QTY.
1 710-0227 Screw, Hex Wash. Hd. Tapp ............
#8-18 x .5
2
2 710-0599 Screw, Hex Wash. Hd. Tapp, ...........
1/4-20 x .5
2
3 710-3015 Screw, Hex Cap, 1/4-20 x .75 GR5 .. 2
4 712-0271 Nut, Hex Sems, 1/4-20 ..................... 4
5 725-04022B Meter, Hour ...................................... 1
6 725-04165 Switch, Dbl. Pole - Neutral ............... 2
7 725-04174 Switch, PTO ..................................... 1
8 725-04228 Switch, Ignition ................................. 1
9 725-04232 Switch, 3-Pole, (NC-NO-NO) - Brake 1
10 725-1303 Switch, Outer Seat Spring ................ 1
11 725-1426A Solenoid ........................................... 1
12 725-1439 Switch, Inner Seat Spring ................. 1
13 925-1745 Key ................................................... 1
14 725-1707D Battery, 235 CCA ............................. 1
15 725-3166 Switch, Snap Mount (N.C.) - Reverse 2
16 726-0278 Plate, Insulator Boss ........................ 1
17 726-0279 Plate, Insulator ................................. 2
18 726-0470 Tie, Cable ......................................... 2
19 703-05894 Bracket, Battery Holddown ............... 1
20 731-0511-5 Strip, Trim ......................................... 4.5in
21 710-0653 Screw, Hex Wash. Hd. Tapp, ...........
1/4-20 x .375
2
†725-04434 Harness Assembly, Wire .................. 1
ELECTRICAL
†NOT SHOWN
-6-
OPERATOR’S PLATFORM
1
2
3
8
9
10
11
12
13
14
16
18
17
3
4
4
4
6
6
5
6
6
6
8
16
6
6
5
6
11
10
6
7
6
6
18
15
7
20
19
20
21 21
-7-
REF.
NO.
PART
NUMBER DESCRIPTION QTY.
1 603-04326B
777S32836
777I22764
777I22763
Frame, Seat Box ...............................
Graphic, Warning ...........................
Graphic, Park Brake .......................
Graphic, Deck Height .....................
1
1
1
1
2 703-05373B
777D10716
777D10660
Bracket, Foot Rest ............................
Graphic, Cub Cadet .......................
Graphic, RZT 50 ............................
1
1
1
3 703-05467 Bracket, Switch Mounting .................. 2
4 710-04261 Screw, Hex Wash. Hd Tapp ..............
#12-16 x .50
4
5 710-0599 Screw, Hex Wash. Hd. Tapp. ............
1/4-20 x .5
4
6 710-0604A Screw, Hex Wash. Hd. Tapp .............
5/16-18 x .625
20
7 710-0726 Screw, Hex Wash. Hd. Tapp .............
5/16-12 x .75
4
8 710-0778 Screw, Hex Wash. Hd. Tapp. ............
1/4-20 x 1.5
2
9 710-1268 Screw, Hex Wash. Hd Tapp ..............
#10-16 x .375
2
10 712-0298 Nut, Hex Jam, 1/4-20 GR2 ................ 2
11 712-04092 Nut, U Type Speed, 1/4-20 ............... 2
12 735-04082 Pad, Foot ........................................... 1
13 731-04662C
777I22750
777D10554
777I22280
Console, LH ......................................
Graphic, Instruction ........................
Graphic, Cub Cadet .......................
Graphic, Throttle Control ................
1
1
1
1
14 731-04663B
777I22753
777D10555
Console, RH ......................................
Graphic, Instruction ........................
Graphic, Cub Cadet .......................
1
1
1
15 732-04035 Spring, Compression, 1.28 x 3.125 2
16 732-04200 Spring, Switch Actuator ..................... 2
17 757-04041 Seat ................................................... 1
18 783-1489C Bracket, Seat Pivot ............................ 2
19 726-3046 Clip, Ratchet ...................................... 9
20 736-0148 Washer, External Tooth, 3/8 ............. 3
21 710-1260A Screw, Hex Wash. Hd. Tapp .............
5/16-18 x .75
2
OPERATOR’S PLATFORM
-8-
CONTROLS AND DECK LIFT
3
1
42
2
5
7
9
8
35
14
15
16
19
22
23
27
25
28
29
33
30
32
34
39
36
43
41
6
9
15
16
17
21
22
33
34
39
39
41
44
44
40
39
12
17
31
13
27
40
19
26
5
6
36
4
4
10
11
18
18
18
18
20
20
20
20
21
21
24
37
37
38
38
24
45
47
46
-9-
REF.
NO.
PART
NUMBER DESCRIPTION QTY.
1 603-04160B Shaft Assembly, Deck Lift ................... 1
2 603-04322 Lever, Lapbar, RH ............................... 1
3 603-04324 Lever, Lapbar, LH ............................... 1
4 947-04065 Rod, Brake .......................................... 2
5 647-04099 Shaft, Control ...................................... 2
6 703-05387A Bracket, Lapbar Pivot .......................... 2
7 703-05396 Handle, Brake ..................................... 1
8 703-05414A Bracket, Front Deck Hanger ................ 1
9 703-05793A Arm, Deck Lift ...................................... 2
10 703-05907 Plate, Lift Link ...................................... 2
11 710-0433 Screw, Hex Lock, 1/4-20 x .62 GR5 .... 2
12 710-3005 Screw, Hex Cap, 3/8-16 x 1.25 GR5 ... 1
13 710-3008 Screw, Hex Cap, 5/16-18 x .75 GR5 ... 2
14 710-3180 Screw, Hex Cap, 5/16-18 x 1.75 GR5 2
15 711-0832 Ferrule, 3/8-24 x .375 .......................... 2
16 712-0206 Nut, Hex, 1/2-13 GR5 .......................... 4
17 712-04063 Nut, Hx Flange Insert Lck, 5/16-18 GrF 6
18 712-04064 Nut, Hx Flange Insert Lck, 1/4-20 GrF 4
19 712-04065 Nut, Hx Flange Insert Lck, 3/8-16GrF 4
20 712-0431 Nut, Hex Flange Lock, 3/8-16 GRF 5
21 714-0104 Pin, Internal Cotter .............................. 6
22 716-0106 E-Ring , .625 Dia. Shaft ...................... 4
23 720-0311 Grip, Handle ........................................ 1
24 727-04141 Cylinder, Damper ................................ 2
25 731-04735 Grip, Handle ........................................ 1
26 731-05732 Spacer, .62 x 1.0 ................................. 1
27 731-05882 Grip, Hand ........................................... 2
28 732-0334 Spring, Compression ........................... 1
29 732-04422 Spring, Torsion .................................... 1
30 736-0270 Washer, Bell, .265 x .75 x .062 ........... 2
31 736-0272 Washer, Flat, .51 x 1.0 x .06 ............... 2
32 736-0275 Washer, Flat, .344 x .688 x .065 ......... 2
33 736-3019 Washer, Flat, .531 x 1.062 x .134 HT .. 2
34 738-0143 Screw, Shoulder, .498 x .340:3/8-16 4
35 738-0296 Screw, Shoulder, .437 x .268:5/16-18 2
36 738-0507B Screw, Shoulder, .5 x .434:3/8-16 ....... 4
37 738-0572 Screw, Shoulder, .374 x 1.16:1/4-20 ... 2
38 738-0974 Screw, Shoulder, .375 x .38:1/4-20 ..... 2
39 741-0225 Bearing, Hex Flange ........................... 6
40 741-3074 Bearing, Flange, .626 x .938 x .344 .... 2
41 747-04225A Rod, Lapbar Control ............................ 2
42 747-04401A Rod, Deck Front Hanger ..................... 1
43 747-04637 Rod, Deck Lift Handle ......................... 1
44 748-04052 Hub, Control ........................................ 2
45 750-04676 Spacer, .385 x .63 x .75 ...................... 2
46 732-04420 Spring, Torsion LH .............................. 1
47 732-04421 Spring, Torsion RH .............................. 1
CONTROLS AND DECK LIFT
-10-
REF.
NO.
PART
NUMBER DESCRIPTION QTY.
1 618-04317
710-0852
Hub, Wheel ......................................
Stud, Rib Neck, 7/16-14 x 1.6 ......
2
8
2 618-04431
618-04431A
Transmission Assembly, RH - Before
Mfg. Date A267
Transmission Assembly, RH - Mfg.
Date A267 & After - Replaces 618-
04431
1
3 618-04432
618-04432A
Transmission Assembly, LH - Before
Mfg. Date A267
Transmission Assembly, LH - Mfg.
Date A267 & After - Replaces 618-
04432
1
4 634-04128
734-1729
603-04175
734-0255
Wheel Ass’y, 18 x 9.5 x 8
Tire, 18 x 9.5 x 8 ...........................
Rim Assembly ..............................
Valve Assembly ............................
2
2
2
2
5 710-0176 Screw, Hex Cap, 5/16-18 x 2.75 GR5 4
6 710-0395 Screw, Hex Cap, 5/16-18 x 2.25 GR5 2
7 710-3119 Screw, Hex Cap Lock, ......................
3/8-16 x .75 GR5
2
8 712-04063 Nut, Hx Flnge Insert Lck, 5/16-18 GrF 6
9 712-0459 Nut, Hex Flange Lock, 7/16-20 GrB 2
10 712-3050 Nut, Lug, 7/16-14 ............................. 8
11 714-0507 Pin, Cotter, 3/32 x .75 ...................... 2
12 736-0227 Washer, Flat, .39 x 1.5 .134 ............ 2
13 738-04192 Rod, .405 x 14.0 .............................. 2
14 747-04217C Rod, Bypass .................................... 2
15 750-04561 Tube, .45 x .69 x 10.2 ...................... 2
16 754-04043 V-Belt, Type A Sec x 57.7 ............... 1
17 726-04059 Clamp, Hose - Used ONLY with
618-04431 & 618-04432 Trans.
2
18 751-10474 Hose, Breather - Used ONLY with
618-04431 & 618-04432 Trans.
2
REF.
NO.
PART
NUMBER DESCRIPTION QTY.
REAR DRIVE AND WHEELS
1
2
5
13
15
10
14
3
4
5
10
4
7
6
1
6
11
17
11
8
16
9
8
17
7
12
12
18
18
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Full Search Facility
Print one or all pages of your manual
$31.99
The Cub Cadet RZT Series Tractors Master Parts Manual is a comprehensive resource for anyone involved in the repair and maintenance of Cub Cadet RZT series tractors. This manual contains detailed diagrams and part numbers for all components of the tractors, making it an indispensable tool for both professional mechanics and DIY enthusiasts. Whether you are looking to identify a specific part or understand the assembly of a particular component, this manual provides the necessary information to facilitate the task. With its full and complete version, this manual ensures that all the essential details are readily available for reference.
