Page 1
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RZT50/After Mfg Date C216-w/Kohler Engine -1- SECTION Z7
Parts Manual
RZT SERIES
Model Number
RZT 50
Model Year 2006
After Mfg. Date 1C216
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RZT50/After Mfg Date C216-w/Kohler Engine -2- SECTION Z7
MODEL RZT 50
TABLE OF CONTENTS
DESCRIPTION PAGE
Frame and Drive Idler Assembly ..................................... 3
Electrical .......................................................................... 4
Operator’s Platform ......................................................... 6
Controls and Deck Lift ..................................................... 8
Rear Drive and Wheels ................................................... 10
RH Transmission ............................................................. 12
LH Transmission ............................................................. 14
50" Mower Deck .............................................................. 16
Engine Connections ........................................................ 18
Front Axle ........................................................................ 20
Seat Adjustment .............................................................. 21
Engine .............................................................................
Air Intake/ Filtration .......................................................
Blower Housing & Baffles .............................................
Crankcase ....................................................................
Cylinder Heads .............................................................
Engine Controls ............................................................
Fuel System .................................................................
Ignition/ Electrical ..........................................................
Oil/ Lubrication ..............................................................
Starting System ............................................................
22
23
24
26
27
28
29
30
31
NOTE: For painted parts, please refer to the
list of color codes below. Please add the applicable 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
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RZT50/After Mfg Date C216-w/Kohler Engine -3- SECTION Z7
FRAME AND DRIVE IDLER ASSEMBLY
1
5
7
3
3
9
5
REF.
PART
NO.
NUMBER DESCRIPTION QTY.
1 603-04303B
777D09506
777I22489
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 Flange Lck, 3/-16 GRF 4
6 732-0626 Spring, Extension, .75 x 5.06 ............ 1
7 738-04058 Spacer, Shoulder, .39 x 1.0 x .7 ........ 2
8 738-04162A Screw, Shoulder, .884 x .19 ............. 1
9 756-04129 Pulley, Idler, 4.25 Dia. ....................... 1
Frame Assembly ...............................
Graphic, Cub Cadet .......................
Graphic, Release Lever .................
5
2
6
8
4
1
1
2
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RZT50/After Mfg Date C216-w/Kohler Engine -4- SECTION Z7
ELECTRICAL
15
10
12
19
16
15
20
11
14
8
6
17
13
7
5
2
4
2
3
4
6
1
9
18
Section of Main Wire Harness
(Reference Only)
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RZT50/After Mfg Date C216-w/Kohler Engine -5- SECTION Z7
ELECTRICAL
REF.
PART
NO.
NUMBER DESCRIPTION QTY.
1 710-0227 Screw, Hex Wash. Hd. Tapp ............
#8-18 x .5
2 710-0599 Screw, Hex Wash. Hd. Tapp, ...........
1/4-20 x .5
3 710-3015 Screw, Hex Cap, 1/4-20 x .75 GR5 .. 2
4 712-0271 Nut, Hex Sems, 1/4-20 ..................... 4
5 725-04022A 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
† 725-04297 Harness Assembly, Wire .................. 1
† 725-04188 Cable Wire, Black - to Ground ......... 1
2
4
† NOT SHOWN
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RZT50/After Mfg Date C216-w/Kohler Engine -6- SECTION Z7
OPERATOR’S PLATFORM
17
13
10
8
6
1
6
4
5
18
15
15
11
6
7
16
18
7
3
6
6
6
6
9
2
16
3
5
4
12
6
6
10
8
6
11
6
4
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14
Page 7
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RZT50/After Mfg Date C216-w/Kohler Engine -7- SECTION Z7
OPERATOR’S PLATFORM
REF.
PART
NO.
NUMBER DESCRIPTION QTY.
1 603-04326A
777I22600
777S32354
777I22275
2 703-05373B
777D09506
3 703-05467 Bracket, Switch Mounting .................. 2
4 710-04261 Screw, Hex Wash. Hd Tapp ..............
5 710-0599 Screw, Hex Wash. Hd. Tapp. ............
6 710-0604A Screw, Hex Wash. Hd. Tapp .............
7 710-0726 Screw, Hex Wash. Hd. Tapp .............
8 710-0778 Screw, Hex Wash. Hd. Tapp. ............
9 710-1268 Screw, Hex Wash. Hd Tapp ..............
10 712-0298 Nut, Hex Jam, 1/4-20 GR2 ................ 2
11 712-04092 Nut, U Type Speed, 1/4-20 ............... 2
12 723-04020 Pad, Abrasive Foot Plate .................. 1
13 731-04662B
777I22602
777D09709
777I22280
14 731-04663A
777I22601
777D09710
15 732-04035 Spring, Compression, 1.28 x 3.125 2
16 732-04200 Spring, Switch Actuator ..................... 2
17 757-04041
777D09646
18 783-1489B Bracket, Seat Pivot ............................ 2
Frame, Seat Box ...............................
Graphic, Park Brake .......................
Graphic, Warning ...........................
Graphic, Deck Height .....................
Bracket, Foot Rest ............................
Graphic, Cub Cadet .......................11
#12-16 x .50
1/4-20 x .5
5/16-18 x .625
5/16-12 x .75
1/4-20 x 1.5
#10-16 x .375
Console, LH ......................................
Graphic, Instruction ........................
Graphic, Cub Cadet .......................
Graphic, Throttle Control ................
Console, RH ......................................
Graphic, Instruction ........................
Graphic, Cub Cadet .......................
Seat ...................................................
Graphic, Cub Cadet/USA ...............11
1
1
1
1
4
4
20
6
2
2
1
1
1
1
1
1
1
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RZT50/After Mfg Date C216-w/Kohler Engine -8- SECTION Z7
CONTROLS AND DECK LIFT
15
14
40
36
37
22
33
18
6
24
3
4
44
1
36
41
17
7
18
27
28
37
20
38
10
25
42
5
18
39
4
16
23
36
13
29
34
26
12
9
34
15
33
18
24
2
32
11
30
43
30
36
43
23
19
41
16
7
21
44
21
21
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31
14
40
35
16
8
Page 9
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RZT50/After Mfg Date C216-w/Kohler Engine -9- SECTION Z7
CONTROLS AND DECK LIFT
REF.
PART
NO.
NUMBER DESCRIPTION QTY.
1 603-04160A Shaft Assembly, Deck Lift ................... 1
2 603-04322 Lever, Lapbar, RH ............................... 1
3 603-04324 Lever, Lapbar, LH ............................... 1
4 703-05387A Bracket, Lapbar Pivot .......................... 2
5 703-05396 Handle, Brake ..................................... 1
6 703-05414A Bracket, Front Deck Hanger ................ 1
7 703-05793 Arm, Deck Lift ...................................... 2
8 710-0433 Screw, Hex Lock, 1/4-20 x .62 GR5 .... 2
9 710-0805 Screw, Hex Cap, 5/16-18 x 1.5 GR5 ... 2
10 710-3005 Screw, Hex Cap, 3/8-16 x 1.25 GR5 ... 1
11 710-3008 Screw, Hex Cap, 5/16-18 x .75 GR5 ... 2
12 710-3144 Screw, Hex Cap, 3/8-16 x 2.0 GR5 ..... 2
13 710-3180 Screw, Hex Cap, 5/16-18 x 1.75 GR5 2
14 711-0832 Ferrule, 3/8-24 x .375 .......................... 2
15 712-0206 Nut, Hex, 1/2-13 GR5 .......................... 4
16 712-04063 Nut, Hx Flange Insert Lck, 5/16-18 GrF 8
17 712-04065 Nut, Hx Flange Insert Lck, 3/8-16GrF 2
18 712-0431 Nut, Hex Flange Lock, 3/8-16 GRF 5
19 712-3007 Nut, Hex Jam, 5/16-18 GR5 ................ 2
20 712-3008 Nut, Hex Jam, 3/8-16 GR5 .................. 2
21 714-0104 Pin, Internal Cotter .............................. 6
22 714-3020 Pin, Internal Cotter .............................. 1
23 716-0106 E-Ring , .625 Dia. Shaft ...................... 4
24 720-0274 Grip, Hand ........................................... 2
25 720-0311 Grip, Handle ........................................ 1
26 736-0272 Washer, Flat, .51 x 1.0 x .06 ............... 2
27 731-04735 Grip, Handle ........................................ 1
28 732-0334 Spring, Compression ........................... 1
29 732-0874 Spring, Torsion .................................... 1
30 732-04350 Spring, Compression ........................... 2
31 736-0270 Washer, Bell, .265 x .75 x .062 ........... 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
36 741-0225 Bearing, Hex Flange ........................... 6
37 741-3074 Bearing, Flange, .626 x .938 x .344 .... 2
38 746-0970 Cable, Deck Lift, 5.05 Long ................. 2
39 747-04224 Rod, Deck Lift Handle ......................... 1
40 747-04225A Rod, Lapbar Control ............................ 2
41 747-04226 Shaft, Control ...................................... 2
42 747-04401A Rod, Deck Front Hanger ..................... 1
43 747-04491 Rod, Brake .......................................... 2
44 748-04052 Hub, Control ........................................ 2
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RZT50/After Mfg Date C216-w/Kohler Engine -10- SECTION Z7
REAR DRIVE AND WHEELS
7
8
3
10
13
12
15
12
6
4
16
2
12
5
9
17
4
7
14
11
6
15
1
5
3
8
10
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RZT50/After Mfg Date C216-w/Kohler Engine -11- SECTION Z7
REAR DRIVE AND WHEELS
REF.
PART
NO.
NUMBER DESCRIPTION QTY.
1 618-04326 Transmission Assembly, RH ................. 1
2 618-04327 Transmission Assembly, LH ................. 1
3 634-04128
734-1729
734-0255
4 710-0176 Screw, Hex Cap, 5/16-18 x 2.75 GR5 4
5 710-0395 Screw, Hex Cap, 5/16-18 x 2.25 GR5 2
6 710-0852 Stud, Rib Neck, 7/16-14 x 1.6 ............... 8
7 712-04063 Nut, Hx Insert Flange Lck, 5/16-18 GrF 6
8 712-04088 Nut, Hex Lock, 9/16-18 GRC ................ 2
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
12 726-04059 Clamp, Hose ......................................... 2
13 738-04192 Rod, .405 x 14.0 ................................... 2
14 747-04217C Rod, Bypass ......................................... 2
15 748-04055 Hub, Wheel ........................................... 2
16 750-04561 Tube, .45 x .69 x 10.2 ........................... 2
17 754-04043 V-Belt, Type A Sec x 57.7 ..................... 1
Wheel Assembly, 18 x 9.5 x 8 ..............
Tire, 18 x 9.5 x 8 ................................
Valve Assembly .................................
2
2
2
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RZT50/After Mfg Date C216-w/Kohler Engine -12- SECTION Z7
RH TRANSMISSION
56
64
65
21
63
63
66
29
62
46
61
20
48
45
44
55
58
54
36
17
16
7
51
39
14
8
12
47
18
42
67
60
59
43
38
37
41
40
36
68
2
9
49
57
29
28
27
26
25
24
23
22
5
19
8
1
15
13
30
4
30
6
50
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3
11
34
35
33
52
31
32
10
53
13
Page 13
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RZT50/After Mfg Date C216-w/Kohler Engine -13- SECTION Z7
RH TRANSMISSION
REF.
REF.
PART
NO.
NUMBER DESCRIPTION QTY.
1 HG-70862R Housing Assembly, Main RH 1
2 HG-70863R Side Assembly, RH ............... 1
3 HG-51448 Plate, Bypass ........................ 1
4 HG-70723 Pump Block Assembly .......... 1
5 HG-51949 Spacer, .32 x 1.005 ............... 1
6 HG-70331 Motor Block Assembly .......... 1
7 HG-9005110-5600 Plug, SAE #6 ........................ 1
8 HG-9004800-2506 Pin, Stainless ........................ 2
9 HG-51190 Screw, Hex Self Tapping, .....
10 HG-70719 Seal, Brake ........................... 1
11 HG-50016 Bolt, Hex Flange, 3/8-24 x 2.5 3
12 HG-51626 Seal, Lip, .375 x .75 x .25 ..... 1
13 HG-51628 Ring, Retaining, .375 Ext. ..... 2
14 HG-51625 Rod, Bypass ......................... 1
15 HG-51627 Ring, Retaining, .75 Int. ........ 1
16 HG-52370 Arm, Bypass ......................... 1
17 HG-51630 Ring, Retaining, .375 Push ... 1
18 HG-51048 Swashplate, Trunnion ........... 1
19 HG-51140 Seal, Lip, 18 x 32 x 7 ............ 1
20 HG-44130 Washer, Flat, 11/32 x 7/8 x 1/16 1
21 HG-51812 Screw, 5/16-24 x 1.0 ............. 1
22 HG-2003014 Spring, Compression ............ 1
23 HG-2003017 Washer, .591 x .787 x .04 ..... 1
24 HG-51062 Shaft, Input ........................... 1
25 HG-50315 Bearing, Ball, 17mm x 40 x 12 1
26 HG-2000022 Ring, Wire Retaining, .561 .... 1
27 HG-50951 Spacer .................................. 1
28 HG-51161 Seal, Lip, 17 x 40 x 7 ............ 1
29 HG-50329 Ring, Retaining ..................... 2
30 HG-50551 Bearing, Thrust, 30 x 52 x 13 2
31 HG-44371 Washer, Flat, 5/8 x 1.0 x .05 1
32 HG-44145 Ring, Retaining ..................... 1
33 HG-51130 Gear, Pinion, 13T .................. 1
34 HG-51632 Shaft, Motor .......................... 1
35 HG-51069 Washer, .71 x 1.16 x .04 ....... 1
1/4-20 x 1.25
16
PART
NO.
NUMBER DESCRIPTION QTY.
36 HG-50132 Washer, HT, .5 x 1.0 x .032 .. 2
37 HG-51129 Gear, 10T/48T ....................... 1
38 HG-51043 Gear, Jackshaft, 10T ............. 1
39 HG-51083 Pin, Jackshaft ........................ 1
40 HG-44871 Ring, Spiral Retaining ........... 1
41 HG-51633 Gear, Bull, 52T ...................... 1
42 HG-44875 Washer, 3/4 x 1.5 x .13 ......... 1
43 HG-51088 Bearing, Sleeve ..................... 1
44 HG-51954 Axle ....................................... 1
45 HG-51089 Bushing, .752 x 1.571 x .625 1
46 HG-51066 Seal, Lip, .75 x 1.577 x .25 ... 1
47 HG-70868R Kit, Expansion Plate, RH ....... 1
48 HG-71333 Kit, Fan-Pulley ....................... 1
49 HG-71365 Kit, Brake Arm ....................... 1
50 HG-71143 Kit, Center Section-Filter RH 1
51 HG-71006 Kit, Bypass Arm .................... 1
52 HG-70911 Kit, Filter ................................ 1
53 HG-51635 Disc, Brake Cog .................... 1
54 HG-52315 Fan, 7” 10 Blade ................... 1
55 HG-50302 Pulley, 4.5 ............................. 1
56 HG-51244 Nut, Hex Insert Lock, 1/2-20 1
57 HG-50752 Screw, Hex Wash. Hd. Tapp
58 HG-70921 Cap, Vent Assembly ............ 1
59 HG-50591 Fitting, Sraight, 9/6-18 ........... 1
60 HG-50590 Clamp, Pinch ......................... 1
61 HG-51616 Screw, Hx Patch, 5/16-24 x 1.0 1
62 HG-51947 Bushing, Pilot, 1.125 ............. 1
63 HG-51948 Washer, Plastic ..................... 2
64 HG-51950 Washer, 1.5 x .34 x .062 ....... 1
65 HG-51399 Spring, Extension .................. 1
66 HG-71095 Kit, Return Assembly RH ...... 1
67 HG-51731 Hose, .5 x 15.0 ...................... 1
68 HG-71308 Kit, Breather Assembly ......... 1
HG-70853 Kit, Seal ................................. 1
HG-50928 Sealant Tube, 10.3 oz ........... 1
1/4-20
3
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RZT50/After Mfg Date C216-w/Kohler Engine -14- SECTION Z7
LH TRANSMISSION
56
49
55
58
51
68
41
40
2
9
36
37
60
59
38
67
43
17
16
14
12
7
1
8
42
36
39
18
14
13
54
57
29
28
27
26
25
24
23
22
19
8
45
44
5
48
20
61
46
29
21
64
65
63
63
62
66
13
53
10
32
30
4
3
11
34
50
35
33
31
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52
30
6
Page 15
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RZT50/After Mfg Date C216-w/Kohler Engine -15- SECTION Z7
LH TRANSMISSION
REF.
REF.
PART
NO.
NUMBER DESCRIPTION QTY.
1 HG-70862L Housing Assembly, Main LH . 1
2 HG-70863L Side Assembly, LH ............... 1
3 HG-51448 Plate, Bypass ........................ 1
4 HG-70723 Pump Block Assembly .......... 1
5 HG-51949 Spacer, .32 x 1.005 ............... 1
6 HG-70331 Motor Block Assembly .......... 1
7 HG-9005110-5600 Plug, SAE #6 ........................ 1
8 HG-9004800-2506 Pin, Stainless ........................ 2
9 HG-51190 Screw, Hex Self Tapping, .....
10 HG-9008000-0125 Seal, Lip, .5 x .88 x .25 ......... 1
11 HG-50016 Bolt, Hex Flange, 3/8-24 x 2.5 3
12 HG-51626 Seal, Lip, .375 x .75 x .25 ..... 1
13 HG-51628 Ring, Retaining, .375 Ext. ..... 2
14 HG-51625 Rod, Bypass ......................... 1
15 HG-51627 Ring, Retaining, .75 Int. ........ 1
16 HG-51910 Arm, Bypass ......................... 1
17 HG-51630 Ring, Retaining, .375 Push ... 1
18 HG-51048 Swashplate, Trunnion ........... 1
19 HG-51140 Seal, Lip, 18 x 32 x 7 ............ 1
20 HG-44130 Washer, Flat, 11/32 x 7/8 x 1/16 1
21 HG-51812 Screw, 5/16-24 x 1.0 ............. 1
22 HG-2003014 Spring, Compression ............ 1
23 HG-2003017 Washer, .591 x .787 x .04 ..... 1
24 HG-51062 Shaft, Input ........................... 1
25 HG-50315 Bearing, Ball, 17mm x 40 x 12 1
26 HG-2000022 Ring, Wire Retaining, .561 .... 1
27 HG-50951 Spacer .................................. 1
28 HG-51161 Seal, Lip, 17 x 40 x 7 ............ 1
29 HG-50329 Ring, Retaining ..................... 2
30 HG-50551 Bearing, Thrust, 30 x 52 x 13 2
31 HG-44371 Washer, Flat, 5/8 x 1.0 x .05 1
32 HG-44145 Ring, Retaining ..................... 1
33 HG-51130 Gear, Pinion, 13T .................. 1
34 HG-51845 Shaft, Motor .......................... 1
35 HG-51069 Washer, .71 x 1.16 x .04 ....... 1
1/4-20 x 1.25
16
PART
NO.
NUMBER DESCRIPTION QTY.
36 HG-50132 Washer, HT, .5 x 1.0 x .032 .. 2
37 HG-51129 Gear, 10T/48T ....................... 1
38 HG-51043 Gear, Jackshaft, 10T ............. 1
39 HG-51083 Pin, Jackshaft ........................ 1
40 HG-44871 Ring, Spiral Retaining ........... 1
41 HG-51633 Gear, Bull, 52T ...................... 1
42 HG-44875 Washer, 3/4 x 1.5 x .13 ......... 1
43 HG-51088 Bearing, Sleeve ..................... 1
44 HG-51954 Axle ....................................... 1
45 HG-51089 Bushing, .752 x 1.571 x .625 1
46 HG-51066 Seal, Lip, .75 x 1.577 x .25 ... 1
47 HG-70868l Kit, Expansion Plate, LH ....... 1
48 HG-71333 Kit, Fan-Pulley ....................... 1
49 HG-71356 Kit, Brake Arm ....................... 1
50 HG-71142 Kit, Center Section-Filter LH 1
51 HG-71006 Kit, Bypass Arm .................... 1
52 HG-70911 Kit, Filter ................................ 1
53 HG-51635 Disc, Brake Cog .................... 1
54 HG-52315 Fan, 7” 10 Blade ................... 1
55 HG-50302 Pulley, 4.5 ............................. 1
56 HG-51244 Nut, Hex Insert Lock, 1/2-20 1
57 HG-50752 Screw, Hex Wash. Hd. Tapp
58 HG-70921 Cap, Vent Assembly ............ 1
59 HG-50591 Fitting, Sraight, 9/6-18 ........... 1
60 HG-50590 Clamp, Pinch ......................... 1
61 HG-51616 Screw, Hx Patch, 5/16-24 x 1.0 1
62 HG-51947 Bushing, Pilot, 1.125 ............. 1
63 HG-51948 Washer, Plastic ..................... 2
64 HG-51950 Washer, 1.5 x .34 x .062 ....... 1
65 HG-51399 Spring, Extension .................. 1
66 HG-71095 Kit, Return Assembly RH ...... 1
67 HG-51731 Hose, .5 x 15.0 ...................... 1
68 HG-71308 Kit, Breather Assembly ......... 1
HG-70853 Kit, Seal ................................. 1
HG-50928 Sealant Tube, 10.3 oz ........... 1
1/4-20
3
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Page 16
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For Parts Call 606-678-9623 or 606-561-4983
RZT50/After Mfg Date C216-w/Kohler Engine -16- SECTION Z7
50" MOWER DECK
50" MOWER DECK
3
42
41
43
20
34
11
44
13
23
4
26
9
22
15
30
16
38
11
35
37
2
1
32
18
39
10
25
27
5
16
36
24
8
21
16
8
29
36
12
12
31
8
29
36
2
16
16
6
7
28
19
40
10
14
33
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17
16
10
17
33
17
33
Page 17
For Parts Call 606-678-9623 or 606-561-4983
For Parts Call 606-678-9623 or 606-561-4983
RZT50/After Mfg Date C216-w/Kohler Engine -17- SECTION Z7
50" MOWER DECK
REF.
PART
NO.
NUMBER DESCRIPTION QTY.
1 603-04328
777S32598
777S30503
777I22282
2 618-04126
756-1171
737-3000
3 631-04070A
777S30284
4 683-0254 Bracket, Deck Hanger ......................... 1
5 703-05825 Arm, Idler ............................................. 1
6 703-3279 Bracket, Stop ....................................... 1
7 703-3511 Guard, Finger ...................................... 1
8 710-0347 Screw, Hex Cap, 3/8-16 x 1.75 GR5 ... 3
9 710-0528 Screw, Hex Cap, 5/16-18 x 1.25 GR5 . 1
10 710-0599 Screw, Hex Wash. Hd. Tapp ...............
11 710-0726 Screw, Hex Wash. Hd. Tapp ...............
12 710-1260A Screw, Hex Wash. Hd. Tapp ...............
13 710-3005 Screw, Hex Cap, 3/8-16 x 1.25 GR5 1
14 710-3168 Screw, Carriage, 3/8-16 x 1.0 .............. 1
15 710-3178 Screw, Carriage, 3/8-16 x .75 .............. 4
16 712-04065 Nut, Hx Insert Flange Lck, 3/6-16 GrF 9
17 712-0417A Nut, Hex Flange, 5/8-18 ...................... 3
18 712-0431 Nut, Hex Flange Lock, 3/8-16 GRF ..... 4
19 712-0641 Nut, Hex, M16-1.5 ............................... 2
20 714-0470 Pin, Cotter, 1/8 x 1.25 .......................... 2
21 717-1553B Gear, Deck Adjustment ....................... 1
22 721-04041 Adapter, Water Nozzle ........................ 1
23 732-0306A Spring, Compression ........................... 2
24 732-0459 Spring, Extension, .94 Dia. x 6.74 ....... 1
25 734-04155 Wheel, Deck Ball, 5.0 .......................... 4
26 736-0119 Washer, Lock, 5/16 .............................. 1
27 736-0407 Washer, Bell, .45 x 1.0 x .062 .............. 1
28 736-0760 Washer, Lock ....................................... 2
29 736-3072 Washer, Flat, .38 x .93 x .110 HT ........ 3
30 737-04003C Nozzle, Deck Water ............................. 2
31 738-04162A Spacer, Shoulder, .884 x .190 ............. 1
32 738-3056 Screw, Shoulder, .5 x 2.5:3/8-16 ......... 4
33 742-04053A Blade, 2 in 1, 17.9 Lg ........................... 3
34 747-1116 Rod, Deck Hanger ............................... 2
35 754-04044 Belt V, Type A Sec x 134 ..................... 1
36 756-04129 Pulley, Idler, 4.25 Dia .......................... 3
37 783-04399 Cover, Belt LH ..................................... 1
38 783-04400 Cover, Belt RH ..................................... 1
39 783-04414 Skirt, Center ......................................... 1
40 783-04415 Skirt, RH .............................................. 1
41 731-05559A Chute, Deflector ................................... 1
42 783-05030 Bracket, Chute Mounting ..................... 1
43 732-04372 Spring, Torsion .................................... 1
44 711-04565 Pin, Hinge ............................................ 1
Housing, Deck .....................................
Graphic, Danger ...............................
Graphic, Danger ...............................
Graphic, Instruction ..........................
Spindle Assembly ................................
Pulley, 5.39 Dia ................................
Fitting, Lube, 3/16 Drive ...................
Chute Assembly, Discharge ................
Graphic, Danger ...............................11
1/4-20 x .5
5/16-12 x .75
5/16-18 x .75
1
1
1
1
3
3
3
7
6
12
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Page 18
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RZT50/After Mfg Date C216-w/Kohler Engine -18- SECTION Z7
ENGINE CONNECTIONS
31
32
30
27
14
24
23
12
6
22
9
16
18
10
21
4
34
29
9
28
35
1
26
11
25
2
5
11
8
33
13
19
17
3
15
7
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Page 19
For Parts Call 606-678-9623 or 606-561-4983
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RZT50/After Mfg Date C216-w/Kohler Engine -19- SECTION Z7
ENGINE CONNECTIONS
REF.
PART
NO.
NUMBER DESCRIPTION QTY.
1 703-05441A Bracket, Muffler Mounting ................ 1
2 710-0227 Screw, Hex Wash. Hd. Tapp ............
3 710-04248 Screw, Hex Cap, 7/16-20 x 4.0 GR5 1
4 710-04261 Screw, Hex Wash. Hd. Tapp ............
5 710-0599 Screw, Hex Wash. Hd. Tapp ............
6 710-0726 Screw, Hex Wash. Hd. Tapp ............
7 710-0654A Screw, Hex Wash. Hd. Tapp Sems ..
8 710-3008 Screw, Hex Cap, 5/16-18 x .75 GR5 2
9 710-3217 Screw, Truss Hd. Mach. #8-32 x .375 1
10 712-0142 Nut, Hex, #8-32 ................................ 1
11 712-0429 Nut, Hex Insert Lock, 5/16-18 GR5 .. 2
12 712-3005 Nut, Hex Jam, 3/8-16 GR2 ............... 1
13 717-04183
726-0197
14 726-0205 Clamp, Hose .................................... 2
15 726-3055 Clip, Cable Retainer ......................... 1
16 731-04914 Knob, Throttle Control ...................... 1
17 736-0171 Washer, Lock, 7/16 .......................... 1
18 736-0300 Washer, Flat, .406 x .875 x .059 ...... 1
19 736-04131 Washer, Flat, .438 x 1.75 x .25 ........ 1
21 746-04066 Cable, Throttle, 34.25 Lg .................. 1
22 746-04214 Cable, Choke, 61Lg .......................... 1
23 747-04228A Wire, Tank Mounting ........................ 1
24 751-10349-13 Hose, Fuel Line ................................ 10in
25 751-0564B Deflector, Muffler .............................. 1
26 751-0616A Muffler .............................................. 1
27 751-10057C Tank, Fuel, 3.0 Gal. .......................... 1
28 751-10254 Pipe, Exhaust RH ............................ 1
29 751-10253 Pipe, Exhaust LH .............................. 1
30 751-3124C Cap, Fuel .......................................... 1
31 751-10291 Hose, Oil Drain Extension ................ 1
32 712-0271 Nut, Hex Sems, 1/4-20 ‘ .................... 1
33 756-0978A Pulley, Drive ..................................... 1
34 KH-20-041-12-S Gasket, Muffler ................................. 2
35 KH-M-0841080 Nut, Hex Flange, M8 x 1.25 .............. 4
#8-18 x .5
#12-16 x .5
1/4-20 x .5
5/16-12 x .75
3/8-16 x 1.0
Clutch Assembly, Electric PTO ........
Tie, Clutch Wire .............................11
3
2
4
2
4
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Page 20
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RZT50/After Mfg Date C216-w/Kohler Engine -20- SECTION Z7
FRONT AXLE
5
9
10
8
14
4
8
6
3
15
REF.
NO.
1 603-04148A Axle, Front Pivot ................................ 1
2 603-04308 Bracket, Castor Wheel ...................... 2
3 634-04212
4 710-04186 Screw, Hex Lock, 1/2-13 x 1.25 GR5 2
5 710-0514 Screw, Hex Cap, 3/8-16 x 1.0 GR5 ... 2
6 711-04228 Shaft, Axle ......................................... 1
7 712-3022 Nut, Hex Lock, 1/2-13 GRB ..............
8 731-05500 Bearing, Flange, 1.0 x 1.246 ............. 6
9 736-0169 Washer, Lock, 3/8 ............................. 2
10 736-0227 Washer, Flat, .39 x 1.5 x .134 ........... 2
11 736-0250 Washer, Flat, 1.0 x 1.75 x .107 ......... 2
12 737-3000 Fitting, Lube, 3/16 Drive .................... 3
13 738-04182A Screw, Shoulder, .75 x 4.75:7/16-14 2
14 741-0516B Bearing, Flange, .76 x 1.0 x 1.2 ........ 2
15 741-0990B Bearing, Flange, .76 ID w/Lube Ftg. 2
12
8
13
PART
NUMBER DESCRIPTION QTY.
734-0255
Wheel Assembly, 11.0 x 4.0 x 5.0 .....
Valve, Tubeless Air
11
2
1
12
7
13
4
8
2
2
12
8
11
2
7
3
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Page 21
For Parts Call 606-678-9623 or 606-561-4983
For Parts Call 606-678-9623 or 606-561-4983
RZT50/After Mfg Date C216-w/Kohler Engine -21- SECTION Z7
SEAT ADJUSTMENT
15
6
19
5
10
2
13
7
4
12
8
14
11
16
9
19
5
2
3
18
13
17
1
REF.
PART
NO.
NUMBER DESCRIPTION QTY.
1 710-1268 Screw, Hx. Wash. Hd. Tapp ............
2 712-04063 Nut, Hx Insert Flange Lck, ..............
3 712-04064 Nut, Hx Insert Flnge Lck, 1/4-20 GrF 1
4 720-0309A Grip, Seat Adjustment ..................... 1
5 726-0201 Nut, Speed, .3125 ........................... 2
6 731-04074 Spacer, Seat Adjustment ................ 4
7 732-0499 Spring, Compression, .41 x 1.5 ....... 1
8 732-1184 Spring, Extension, .84 Dia. x 4.6 ..... 1
9 736-0204 Washer, Flat, .344 x .62 x .033 ....... 1
#10-16 x .375
5/16-18 GrF
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REF.
PART
NO.
NUMBER DESCRIPTION QTY.
2
10 736-3019 Washer, Flat, .531 x 1.062 x .134 HT 2
11 738-0137A Screw, Shoulder, .34 x .285:1/4-20 1
2
12 738-0296 Screw, Shoulder, .............................
13 738-0966A Screw, Shoulder, .5 x .925:3/8-16 ... 4
14 783-0209D Bracket, Seat Lift ............................. 1
15 783-0611 Stop, Seat Adjustment .................... 1
16 783-0738C Bracket, Seat Pivot ......................... 1
17 783-0739A Lever, Seat Adjustment ................... 1
18 783-0753 Index Bracket, Seat Adjustment ...... 1
19 736-0242 Washer, Belleville, .34 x .872 x .06 2
.437 x .268: 5/16-18
2
Page 22
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RZT50/After Mfg Date C216-w/Kohler Engine -22- SECTION Z7
AIR INTAKE / FILTRATION
9
9
7
6
5
8
1
2
3
4
REF.
NO.
1 KH-24-164-51-S Manifold, intake (Includes 2,3) 1
2 KH-24-041-52-S Gasket, carburetor 1
3 KH-24-153-27-S O-Ring, intake port 2
4 KH-32-094-04-S Base, air cleaner (Includes 5,6) 1
5 KH-24-041-14 Gasket, air cleaner base 1
6 KH-32-344-02-S Latch, air cleaner element 1
7 KH-32-083-03-S Element, air cleaner 1
8 KH-X-25-63 Washer, Flat, 1/4 1
8 KH-M-651040-S Screw, hex. flange M6x1.0x40 4
9 KH-32-083-05-S Pre-cleaner, element 1
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PART
NUMBER DESCRIPTION QTY.
Page 23
For Parts Call 606-678-9623 or 606-561-4983
For Parts Call 606-678-9623 or 606-561-4983
RZT50/After Mfg Date C216-w/Kohler Engine -23- SECTION Z7
BLOWER HOUSING & BAFFLES
3
2
1
12
11
8
10
8
5
8
9
4
8
5
5
7
4
6
REF.
NO.
1 KH-32-027-07-S Housing, blower 1
2 KH-32-096-08-S Cover, air cleaner 1
3 KH-32-314-01-S Guard, Fixed 1
4 KH-M-545016-S Screw, hex. flange M5x0.8x16 4
5 KH-M-645016-S Screw, hex. flange M6x1.0x16 4
6 KH-32-146-05-S Plate, backing 1
7 KH-32-063-05-S Baffle, cylinder barrel - #2 side 1
8 KH-M-0545010 Screw, hex. flange M5x0.8x10 5
9 KH-32-063-02-S Baffle, valley - #2 side 1
10 KH-32-063-03-S Baffle, valley - #1 side 1
11 KH-32-063-04-S Baffle, cylinder barrel-#1 side 1
12 KH-24-086-12 Screw, hex. cap M6x1.7x18 2
† KH-32-113-11-S Decal, Fixed Guard 1
† KH-41-037-10-S Nameplate, Service 1
† KH-25-113-39-S Decal, Clear Laminate 1
† KH-32-113-16-S Decal, Cub 22HP 1
† KH-32-113-20-S Decal, Cub wing set 1
† Not Shown
PART
NUMBER DESCRIPTION QTY.
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Page 24
For Parts Call 606-678-9623 or 606-561-4983
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RZT50/After Mfg Date C216-w/Kohler Engine -24- SECTION Z7
CRANKCASE
1
2
31
30
32
29
26
33
28
15
16
12
17
13
10
11
14
34
19
5
7
6
33
31
30
27
3
4
8
9
32
35
18
25
24
23
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22
20
21
Page 25
For Parts Call 606-678-9623 or 606-561-4983
For Parts Call 606-678-9623 or 606-561-4983
RZT50/After Mfg Date C216-w/Kohler Engine -25- SECTION Z7
CRANKCASE
REF.
NO.
1 KH-32-038-01-S Kit, dipstick (Includes 2) 1
2 KH-12-153-03 O-Ring 1
3 KH-M-545013-S Screw, hex. flange thrd forming 5x.8x13 1
4 KH-12-123-04 Tube, oil fill (Includes 5,6) 1
5 KH-12-153-02-S O-Ring, upper oil fill tube 1
6 KH-12-153-01-S O-Ring, lower oil fill tube 1
7 KH-24-126-19 Bracket, oil fill tube 1
8 KH-24-032-01-S Seal, oil 1
9 Crankcase (Use: Shortblock KH-32-522-03) 1
10 KH-25-237-14-S Clamp, hose 1
11 KH-32-326-04-S Kit, Hose breather 1
12 KH-M-547050-S Nut, hex. lock M5x0.8 1
13 KH-32-468-01-S Washer, sealing 1
14 KH-32-081-02-S Kit, Housing breather 1
15 KH-32-072-02-S Stud, breather cover 2
16 KH-24-018-04 Retainer, breather reed 2
17 KH-24-402-02 Reed, breather 2
18 KH-24-380-16-S Pin, locating 6
19 KH-24-067-20-S Connecting Rod (Std.) 2
20 KH-32-874-06-S Piston w/Ring Set (Std.) (Includes 21) 2
21 KH-24-018-01 Retainer, piston pin 4
22 KH-24-108-11-S Ring Set (Std.) 2
23 KH-12-422-10 Shim, camshaft (yellow) A.R.
24 KH-32-012-01-S Kit, camshaft 1
25 KH-M-645016-S Screw, hex. flange thread forming 1
26 KH-32-096-04-S Cover, breather 1
27 KH-32-041-01-S Gasket, breather cover 1
28 KH-32-050-01-S Filter, breather 1
29 KH-28-032-09-S Seal, governor cross shaft 1
30 KH-24-018-09-S Ring, retainer 1
31 KH-M-931010-S Washer, plain 8 mm 1
32 KH-24-468-15-S Washer, flat 1/4" 1
33 KH-24-144-38-S Shaft, governor cross 1
34 KH-32-014-02-S Crankshaft (Includes 35) 1
35 KH-52-139-09 Plug, cup 1
† KH-32-755-01-S Kit, Gasket Set 1
PART
NUMBER DESCRIPTION QTY.
KH-12-422-09 Shim, camshaft (red) A.R.
KH-12-422-13 Shim, camshaft (black) A.R.
KH-12-422-07 Shim, camshaft (white) A.R.
KH-12-422-08 Shim, camshaft (blue) A.R.
KH-12-422-11 Shim, camshaft (green) A.R.
KH-12-422-12 Shim, camshaft (gray) A.R.
† Not Shown
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Page 26
For Parts Call 606-678-9623 or 606-561-4983
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RZT50/After Mfg Date C216-w/Kohler Engine -26- SECTION Z7
CYLINDER HEADS
4
2
1
5678
3
24
25
26
REF.
NO.
1
2 KH-24-153-28-S O-Ring 1
3 KH-M-651030-S Screw, hex. flange M6x1.0x30 4
4 KH-32-318-01-S Head assembly, #1 cylinder 1
5 KH-12-755-03 Kit, retainer 4
6 KH-12-173-01 Cap, valve spring 2
7 KH-24-089-02 Spring, valve 2
8 KH-235011-S Retainer, spring 2
9 KH-66-032-05-S Seal, valve stem 1
10 KH-24-017-01
11 KH-24-016-01
12 KH-32-019-01-S Tappet 4
13 KH-32-411-02-S Rod, push 2
14 KH-24-841-03-S Kit, cylinder head gasket (Includes
15 KH-32-318-02-S Head assembly, #2 cylinder 1
16 KH-32-186-02-S Arm, rocker 2
17 KH-32-100-04-S Nut, hex. M10x0.75 4
18 KH-32-086-03-S Screw, set 4
19 KH-32-599-02-S Pivot, rocker arm 2
20 KH-12-086-16 Screw,Hex. flange M10x1.5x90 4
21 KH-32-086-04-S Screw, hex. flange M6x1.0x45 4
22 KH-32-096-06-S Kit, valve cover - breather (Includes 2) 1
23 KH-24-445-01 Strap, lifting 1
24 KH-25-072-04 Stud, M8x1.25x33 4
25 KH-24-041-49-S
26 KH-M-841080 Nut, hex. flange M8x1.25 4
† KH-32-755-01-S Kit, Gasket Set 1
PART
NUMBER DESCRIPTION QTY.
KH-24-755-141-S
KH-24-017-02
KH-24-016-02
KH-24-041-12-S
Kit, valve cover - plain (Includes 2,3) 1
Valve, intake (Std.)
Valve, intake (.25)
Valve, exhaust (Std.)
Valve, exhaust (.25
head mounting hardware & KH-24 041-49-S, KH- 24-153-27-S)
Gasket, exhaust manifold
Gasket, Exhaust
12
9
10
11
13
14
15
1
1
1
1
17
2
1
1
23
18
19
22
16
20
21
2
† Not Shown
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Page 27
For Parts Call 606-678-9623 or 606-561-4983
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RZT50/After Mfg Date C216-w/Kohler Engine -27- SECTION Z7
ENGINE CONTROLS
5
26
7
24
6
9
8
10
25
11
16
17
18
19
14
13
12
4
3
2
1
27
23
22
21
20
REF.
NO.
1 KH-24-211-03-S Bolt, round hd square neck 1
2 KH-24-090-33-S Lever, governor 1
3 KH-M-641060-S Nut, hex. flange M6x1.0 1
4 KH-24-089-01 Spring, linkage 1
5 KH-25-158-08 Bushing, linkage retaining 1
6 KH-24-079-04 Linkage, throttle 1
7 KH-25-158-11 Bushing, throttle linkage 1
8 KH-M-545016-S Screw, hex. flange
9 KH-M-547050-S Nut, hex. lock M5x0.8 1
10 KH-24-089-03 Spring, choke return 1
11 KH-24-126-161-S Bracket, control 1
12 KH-M-645016-S Screw, hx. flange M6x1.0x16 4
13 KH-12-237-01-S Clamp, Cable 2
PART
NUMBER DESCRIPTION QTY.
M5x0.8x16
15
REF.
NO.
14 KH-24-086-43-S Screw, thread forming 2
15 KH-24-079-22-S Linkage, choke 1
16 KH-24-112-27-S Spacer, control assembly 1
17 KH-24-090-47-S Lever, throttle actuator 1
18 KH-24-090-13 Lever, throttle control 1
19 KH-24-468-01 Washer, plain 5.5 mm 1
20 KH-M-545020-S Screw, hx. flange M5x0.8x20 1
21 KH-41-468-03 Washer, spring 1/4" 1
1
22 KH-24-090-05 Lever, choke 1
23 KH-M-403025 Screw, hex. head cap 1
24 KH-M-446030-S Nut, hex. M4x0.7 1
25 KH-24-468-20-S Washer, plain 1
26 KH-24-089-25-S Spring, governor 1
27 KH-24-089-55-S Spring, governor 1
PART
NUMBER DESCRIPTION QTY.
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Page 28
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RZT50/After Mfg Date C216-w/Kohler Engine -28- SECTION Z7
FUEL SYSTEM
1
2
3
6
7
11
12
6
4
5
8
9
10
7
REF.
NO.
1 KH-32-853-03-S Kit, carburetor w/gaskets 1
2 KH-24-041-52-S Gasket, carburetor 1
3 KH-24-041-14 Gasket, air cleaner base 1
4 KH-M-629105-S Stud, carburetor 2
5 KH-M-641060-S Nut, hex. flange M6x1.0 2
6 KH-25-237-14-S Clamp, hose 4
7 KH-25-111-34-S Line, fuel (Fuel line comes in lengths of 24" -
8 KH-25-431-10-S Sleeve, Anti Abrasion 1
9 KH-25-237-01-S Clamp, hose 1
10 KH-32-326-02-S Hose, fuel pump 1
11 KH-24-086-12 Screw, hex. cap M6x1.7x18 2
12 KH-24-393-16 Pump, pulse fuel 1
13 KH-25-050-22-S Filter, fuel 1
14 KH-47-154-01-S Clip, cable 1
PART
NUMBER DESCRIPTION QTY.
Cut to needed length for carburetor connections.)
NOT ILLUSTRATED
KH-24-757-36-S Kit, service choke repair 1
KH-24-757-38-S Kit, service gasket repair 1
KH-24-757-44-S Kit, float w/gaskets 1
KH-24-757-45-S Kit, solenoid valve w/gaskets 1
KH-24-757-46-S Kit, overhaul w/gaskets 1
14
13
2
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Page 29
For Parts Call 606-678-9623 or 606-561-4983
For Parts Call 606-678-9623 or 606-561-4983
RZT50/After Mfg Date C216-w/Kohler Engine -29- SECTION Z7
IGNITION/ELECTRICAL
1
2
3
4
5
16
15
6
8
14
REF.
NO.
1 KH-32-162-03-S Screen, grass 1
2 KH-12-086-14 Screw, hex. flange M10x1.5x45 1
3 KH-12-468-03 Washer, plain 3/8" 1
4 KH-20-146-02-S Plate, fan mounting 1
5 KH-32-157-01-S Fan 1
6 KH-32-025-05-S Flywheel 1
7KH-X-42-15 Key 1
8 KH-236602-S Connector (3 contact) 1
9 KH-M-551016-S Screw, heavy hex. flange M5x0.8x16 2
10 KH-41-403-09 Rectifier-regulator 1
11 KH-237878 Kit, 15 amp stator 1
12 KH-235173 Clip, cable 1
13 KH-M-548025-S Screw, hex. head thread forming 2
14 759-3336 Spark plug 2
15 KH-24-584-01-S Module, ignition 2
16 KH-M-545020-S Screw, hex. flange thread forming 4
† KH-25-454-03-S Tie, Wire 1
† KH-32-176-02-S Harness, Wiring 1
PART
NUMBER DESCRIPTION QTY.
13
12
11
7
10
9
† Not Shown
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Page 30
For Parts Call 606-678-9623 or 606-561-4983
For Parts Call 606-678-9623 or 606-561-4983
RZT50/After Mfg Date C216-w/Kohler Engine -30- SECTION Z7
OIL PAN/LUBRICATION
19
5
4
6
7
8
18
2
3
1
11
10
9
14
12
13
15
16
17
REF.
NO.
1 KH-32-199-02-S Pan assembly, oil (Includes 2-15) 1
2 KH-32-086-01-S Screw, hex. flange thread forming shoulder 2
3 KH-32-393-10-S Oil pump assembly 1
4 KH-24-043-12 Kit, governor gear w/pin (Includes 5) 1
5 KH-12-380-01 Pin, governor regulating 1
6 KH-24-448-02-S Tab, locking 1
7 KH-12-144-02 Shaft, governor gear 1
8 KH-52-032-08-S Seal, oil (PTO end) 1
9 KH-32-123-01-S Tube, oil feed - filter to oil pan 1
10 KH-32-123-03-S Tube, oil feed - oil pan to filter 1
11 KH-24-153-01 O-Ring 2
12 KH-32-029-07-S Kit, Adapter, oil filter 1
13 KH-25-139-60-S Plug, hex. ctsk. 1/8" 1
14 KH-32-153-04-S O-Ring, oil filter adapter 1
15 KH-32-136-03-S Nipple, oil filter 1
16 KH-25-099-27-S Switch, pressure 1
17 KH-52-050-02 Filter, oil 1
18 KH-24-086-17-S Screw, hex. flange M8x1.25x45 10
19 KH-25-139-57-S Plug, sq. hd. solid 3/8" 1
PART
NUMBER DESCRIPTION QTY.
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Page 31
For Parts Call 606-678-9623 or 606-561-4983
For Parts Call 606-678-9623 or 606-561-4983
RZT50/After Mfg Date C216-w/Kohler Engine -31- SECTION Z7
STARTING SYSTEM
5
4
7
6
REF.
NO.
1 KH-M-839080 Screw, hex. flange M8x1.25x70 2
2 KH-32-098-01-S Starter assembly (Includes 3-5) 1
3 KH-12-755-39-S Kit, drive 1
4 KH-12-755-38-S Kit, drive parts 1
5 KH-32-141-01-S Ring, Retaining 1
6 KH-32-211-01-S Bolt, Thru 2
7 KH-12-243-04-S Commutator, end cap 1
PART
NUMBER DESCRIPTION QTY.
3
1
2
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