MTD 12AKD3X, 12ABD2X, 12A-B2X, 12A-A1X, 12A-AOX User Manual
...
Illustrated Parts Manual
Printed In USA
Self-Propelled Mowers
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
Form No. 769-10299
(October 20, 2014)
To The Owner
Thank You
Thank you for purchasing an MTD Lawn Mower. It was carefully
engineered to provide excellent performance when properly
operated and maintained.
All information in this manual is relative to the most recent
product information available at the time of printing. Please be
aware that this Illustrated Part’s Manual may cover a range of
product specifications for various models.
Table of Contents
Model Series 12A-AOX ............................................. 4
Model Series 12A-A1X .............................................. 6
Model Series 12A-B2X ............................................. 8
Model Series 12AV/GB2X ........................................10
Model Series 12AVC6X............................................14
Components listed and/or illustrated in this manual may not be
applicable to all models. We reserve the right to change product
specifications, designs and equipment without notice and
without incurring obligation.
Throughout this manual, all references to right (RH) and left (LH)
are observed from the operating position.
Model Series 12AKD3X ...........................................16
Model Series 12ABD2X ...........................................18
Engine Model 5X65RU ........................................... 20
Engine Model 6X65RU........................................... 30
Record Product Information
To ease in ordering replacement parts, please locate the model
plate on the equipment and record the information in the
provided area to the right. You can locate the model plate by
looking beneath the seat.
Model NuMber
Serial NuMber
Painted Parts
When ordering painted service parts, a four digit color suffix must be added to the part number (e.g. 783-XXXXX-0637).
Please refer to the table below for current color codes:
0637 Black
0709 Dark Green (Bolens, Yard-Man)
0662 Oyster Gray (MTD Gold)
0638 Red (Yard Machines, Huskee, Troy-Bilt, MTD)
0691 Black Jack (MTD Gold, MasterCut)
0674 Yellow (Yard-Man)
0650 Metallic Red (White Outdoor)
0629 Silver Flake (MTD Platinum)
04038 Day Orange (Daedong)
04033 Flint Mica (Troy-Bilt XP)
2
Page Left Blank Intentionally
3
Model Series 12A-AOX
44
36
42
41
14
15
46
39
43
24
17
25
37
40
6
3
20
47
1
27
A
30
35
29
38
7
13
52
23
51
38
2
50
3
31
49
21
22
5
45
4
12
3
16
48
A
18
8
9
19
26
53
28
10
11
33
32
19
34
32
53
4
Model Series 12A-AOX
Ref
No.
1 787-01871B Deck , 21”
2 941-00019 Bearing Assembly
3 710-04995A Screw, 5/16-14 x .750
4 712-04222 Nut, Sq., 1/4-20
5 749-04608A Lower Handle
6 710-04998 Carriage Screw ,5/16-18
7 710-04683B Screw, 3/8-16 x 1.00
8 687- 02539 Blade Adapter
9 942- 0741A Mulching Blade
10 736-0524B Blade Bell Support
11 710-104 4 Screw, 3/8-24 x 1.50
12 731- 07203 Trailing Shield
13 732-04675A Transmission Wire
14 731- 07486 Side Discharge Chute
15 987- 02516A Mulch Plug (Incl. 16-18)
16 732-1014C Torsion Spring
17 747- 0710A Hinge Pin
18 78 7-017 79 Chute Deector Bracket
19 720 -0 4130 Adjustment Lever Knob
20 710-05073 Screw, 1/4-20 x .500
21 732-04704 Compression Spring
22 731- 07797 Front Cover
23 787-01793 Front Axle Clip
24 712- 04 0 6 4 Nut, Flange Lock, 1/4-20
25 72 0 -0 412 2 Wing Knob, Black
26 911- 04150 Front Axle Assembly
27 931-04535B Engine Bae
28 911 - 04142A Rear Axle Assembly, 8”
Part Number Description
687- 02538 Balde Adapter, 25mm x 2.66
720 - 04131A Adjustment Lever Knob (Red)
72 0 -0 4124 Wing Knob, Red
Ref
No.
29 917-048 01 Spur Gear, 14T - RH
30 710 - 0 4531 Screw, 1/4-20 x .390
31 918 - 04881A Transmission Assembly
32 712-0 4217 Flange Lock Nut, 3/8-16
33 734-04581 Front Wheel, 8 x 1.8, Bar, Gray
34 734-04563 Rear Wheel, 8 x 1.8, Bar, Gray
35 715-04099 Dowel Pin
36 747- 05210 B Drive Control
37 749-04680B Upper Handle, Non-Adjustable
38 710-0895 Screw, 1/4-15 x .750
39 720 -0279 Knob
40 725-0157 Cable Tie
41 710 -12 05 Rope Guide
42 9 46 -1113 A Control Cable
43 946-04728 Drive Cable
44 747-05184D Blade Control
45 720-05066A Wing Nut
46 738 -04419A Sldr. Screw, .375 x .126 x 1/4-20
47 931- 0 4 486A Rear Bae
48 731-0724 0A Wheel Dust Cover
49 731-07355 Spring Body
50 738-04502 Shoulder Screw, 1/4-20 x 0.50
51 731- 07789 Lower Tray
52 954-0 4259A V-Belt
53 731- 09507 Hubcap, 8”
Part Number Description
917-04802 Spur Gear, 14T - LH
634-05040 Front Wheel, 8 x 2.0, Zag. Black
634-04659 Rear Wheel, 8 x 2.0, Zag, Black
749-04681B Upper Handle, Adjustable
94 6-1114 Control Cable, 50.56
5
Model Series 12A-A1X
44
36
42
15
41
46
39
43
24
25
37
14
40
6
47
18
27
3
38
1
7
20
13
23
3
31
5
16
16
17
45
4
12
3
49
38
19
21
51
22
26
48
19
34
32
6
28
33
32
10
11
30
35
2
29
50
8
9
Model Series 12A-A1X
Ref
No.
1 787-01876B Deck , 21”
2 941-00019 Bearing Assembly
3 710-04995A Screw, 5/16-14 x .750
4 712-04222 Nut, Sq., 1/4-20
5 749-04608A Lower Handle
6 710-04998 Carriage Screw ,5/16-18
7 710-04683B Screw, 3/8-16 x 1.00
8 687- 02539 Blade Adapter
9 942- 0741A Mulching Blade
10 736-0524B Blade Bell Support
11 710-104 4 Screw, 3/8-24 x 1.50
12 731- 07203 Trailing Shield
13 732-04675A Transmission Wire
14 647-04271 Grass Catcher Frame
15 764-04 077B Grass Bag
16 631- 04369A Rear Discharge Door Assembly
17 732-05061A Torsion Spring - RH
18 732-05062A Torsion Spring - LH
19 720 -0 4130 Adjustment Lever Knob
20 954 - 04259A V-Belt
21 732-04704 Compression Spring
22 731- 07797 Front Cover
23 787-01793 Front Axle Clip
24 712- 04 0 6 4 Nut, Flange Lock, 1/4-20
25 72 0 -0 412 2 Wing Knob
26 911- 04150 Front Axle Assembly
Part Number Description
Ref
No.
27 931-04535B Engine Bae
28 911 - 04142A Rear Axle Assembly
29 917-048 01 Spur Gear, 14T - RH
30 710 - 0 4531 Screw, 1/4-20 x .390
31 918 - 04881A Transmission Assembly
32 712-0 4217 Flange Lock Nut, 3/8-16
33 734-04581 Front Wheel
34 734-04563 Rear Wheel
35 715-04099 Dowel Pin
36 747- 05210 B Drive Control
37 749-04680B Upper Handle
38 710-0895 Screw, 1/4-15 x .750
39 720 -0279 Knob
40 725-0157 Cable Tie
41 710 -12 05 Rope Guide
42 9 46 -1113 A Control Cable
43 946-04728 Drive Cable
44 747-05184D Blade Control
45 720-05066A Wing Nut
46 738 -04419A Sldr. Screw, .375 x .126 x 1/4-20
47 747- 05183 Pivot Rod
48 731-0724 0A Wheel Dust Cover
49 731-07355 Spring Body
50 738-04502 Shoulder Screw, 1/4-20 x 0.50
51 731- 07789 Lower Tray
Part Number Description
917-04802 Spur Gear, 14T - LH
7
Model Series 12A-B2X
44
36
42
15
14
41
56
57
46
34
39
43
24
25
59
38
40
6
53
18
27
35
30
3
37
29
1
7
52
13
23
51
37
2
50
8
3
31
49
21
22
5
16
40
16
17
45
4
12
3
58
48
A
47
28
20
9
55
8
32
54
32
33
10
11
19
26
Model Series 12A-B2X
Ref
No.
1 787-01871B Deck, 21”
2 941-00019 Bearing Assembly
3 710-04995A Screw, 5/16-14 x .750
4 712-04222 Nut, Sq., 1/4-20
5 749-04608A Lower Handle
6 710-04998 Carriage Screw ,5/16-18
7 710-04683B Screw, 3/8-16 x 1.00
8 687- 02538 Blade Adapter
9 942- 0741A Mulching Blade
10 736-0524B Blade Bell Support
11 710-104 4 Screw, 3/8-24 x 1.50
12 731- 07203 Trailing Shield
13 732-04675A Transmission Wire
14 647-04271 Grass Catcher Frame
15 764-04 077B Grass Bag
16 631- 04369A Rear Discharge Door Assembly
17 732-05061A Torsion Spring - RH
18 732-05062A Torsion Spring - LH
19 720 -0 4130 Adjustment Lever Knob
20 710-05073 Screw, 1/4-20 x .500
21 732-04704 Compression Spring
22 731- 07797 Front Cover
23 787-01793 Front Axle Clip
24 712- 04 0 6 4 Nut, Flange Lock, 1/4-20
25 72 0 -0 412 2 Wing Knob
26 911- 04150 Front Axle Assembly
27 931-04535B Engine Bae
28 911 - 0414 4B Rear Axle Assembly
29 917-048 01 Spur Gear, 14T - RH
30 710 - 0 4531 Screw, 1/4-20 x .390
31 918 - 04881A Transmission Assembly
Part Number Description
96 4- 04116 B Grass Bag (Yardman)
631- 0 4567A Door Assembly, International
917-04802 Spur Gear, 14T - LH
Ref
No.
32 712-0 4217 Flange Lock Nut, 3/8-16
33 734-04581 Front Wheel, 8 x 1.8, Bar, Gray
34 634-04625 Rear Wheel, 11 x 1.75, Bar, Gray
35 715-04099 Dowel Pin
36 747- 05210 B Drive Control
37 710-0895 Screw, 1/4-15 x .750
38 749-04681B Upper Handle, Adjustable
39 720 -0279 Knob
40 725-0157 Cable Tie
41 710 -12 05 Rope Guide
42 9 46 -1113 A Control Cable, 37.75”
43 946-04728 Drive Cable
44 747-05184D Blade Control
45 720-05066A Wing Nut
46 738 -04419A Sldr. Screw, .375 x .126 x 1/4-20
47 7 87- 0177 9 Chute Deector Bracket
48 731-0724 0A Wheel Dust Cover
49 731-07355 Spring Body
50 738-04502 Shoulder Screw, 1/4-20 x 0.50
51 731- 07789 Lower Tray
52 954-0 4259A V-Belt
53 747- 05183 Pivot Rod
54 731- 09507† Hubcap, 8”, Yellow
55 731- 09508† Hubcap, 11”, Yellow
56 731-074 86 Side Discharge Chute
57 987- 02516A Mulch Plug (Incl. 47, 58-59)
58 732-1014C Torsion Spring
59 747- 0710A Hinge Pin
Part Number Description
634-05040 Front Wheel, 8 x 2.0, Zag. Black
634-05062 Rear Wheel, 11 x 2.0, Zag, Black
731- 09429 Hubcap, 8”, Gray
731- 07875 Hubcap, 11”, Gray
687- 02584A Mulch Plug Ass’y, International
† If Equipped
9
Model Series 12AV/GB2X
44
42
4
59
58
39
61
36
64
67
71
41
15
43
14
37
56
46
57
24
25
40
6
53
18
3
76
50
77
5
16
40
16
17
45
65
60
66
72
70
66
69
63
1
33
27
4
12
3
20
55
A
54
48
30
35
29
38
7
52
13
31
3
73
68
62
23
49
21
51
38
2
50
22
10
75
28
8
34
9
32
10
11
74
47
32
19
26
Model Series 12AV/GB2X
Ref
No.
1 787-01871B Deck , 21”
2 941-00019 Bearing Assembly
3 710-04995A Screw, 5/16-14 x .750
4 712-04222 Nut, Sq., 1/4-20
5 749-04608A Lower Handle
6 710-04998 Carriage Screw ,5/16-18
7 710-04683B Screw, 3/8-16 x 1.00
8 687- 02528 Blade Adapter (159cc)
9 942- 0741A Mulching Blade
10 736-0524B Blade Bell Support
11 710-104 4 Screw, 3/8-24 x 1.50
12 731- 07203 Trailing Shield
13 732-04675A Transmission Wire
14 647-04271 Grass Catcher Frame
15 764-04 082B Grass Bag
16 631- 04369A Rear Discharge Door Assembly
17 732-05061A Torsion Spring - RH
18 732-05062A Torsion Spring - LH
19 720- 05099 Adjustment Lever Knob (Orange)
20 710-05073 Screw, 1/4-20 x .500
21 732-04704 Compression Spring
22 731- 07797 Front Cover
23 787-01793 Front Axle Clip
24 712- 04 0 6 4 Nut, Flange Lock, 1/4-20
25 72 0 -0 412 2 Wing Knob
26 911- 04150 Front Axle Assembly
27 931-04535B Engine Bae
28 911 - 0414 4B Rear Axle Assembly
29 917-048 01 Spur Gear, 14T - RH
30 710 - 0 4531 Screw, 1/4-20 x .390
31 918 - 04881A Transmission Assembly
Part Number Description
787-01873B Deck, 21”
787-01872C Deck, 21”
964-05065 Grass Bag, Remington
631- 04389A Rear Discharge Door Assembly
720 - 04131A Adjustment Lever Knob (Red)
720 -04130 Adjustment Lever Knob (Black)
72 0 -0 4124 Wing Knob, Red
720-05090 Wing Nut, Orange
917-04802 Spur Gear, 14T - LH
Ref
No.
32 712-0 4217 Flange Lock Nut, 3/8-16
33 747-0710A Hinge Pin
34 634-04625 Rear Wheel, 11”, Oyster Gray
35 715-04099 Dowel Pin
36 753-06060A Control Lever Assembly
37 749-04679 Upper Handle
38 710-0895 Screw, 1/4-15 x .750
39 720 -0279 Knob
40 725-0157 Cable Tie
41 710 -12 05 Rope Guide
42 946-04655A Drive Cable
43 946-04703A Control Cable (5X65RU)
44 747-05209 C Blade Control
45 720-05066A Wing Nut
46 738 -04419A Sldr. Screw, .375 x .126 x 1/4-20
47 734 - 04581 Front Wheel, Gray, Pin Bar
48 731-0724 0A Wheel Dust Cover
49 731-07355 Spring Body
50 738-04502 Shoulder Screw, 1/4-20 x 0.50
51 731- 07789 Lower Tray
52 954-0 4260 V-Belt
53 747- 05183 Pivot Rod
54 787- 0177 9 Chute Deector Bracket
55 732-1014 C Torsion Spring
56 731-074 86 Side Discharge Chute
57 987- 02516A Mulch Plug (Incl. 33, 54-55)
58 725 -0 6114 † Plunger Switch
59 731- 09755† Electric Start Housing, LH
60 725- 06121A† Battery Charger
61 710- 0136† Screw, 1/4-20 x 1.75
62 710- 0276† Bolt, Carr., 5/16-18 x 1.00
63 912- 0 429† Nut, Hexlk, 5/16-18
64 731-09728† Key
Part Number Description
634-05062 Rear Wheel, 11 x 2.0, Zag, Black
94 6-113 0 Control Cable (6X65RU)
946-04661A Control Cable (Briggs)
747- 06525 Blade Control, Orange
634-05040 Front Wheel, Black, Zag
731- 07131 Side Discharge Chute
687- 02531A Mulch Plug (Incl. 33, 54-55)
Continued on next page
11
Model Series 12AV/GB2X
Ref
No.
65 725-04903† Battery
66 738-04431A† Scr., Sldr., 5/16-14 x .972
67 931- 05131A† Key Switch
68 726- 0201† Speed Nut
69 731- 07135† Battery Housing
70 731- 07154A† Battery Housing Top
71 731- 09753A† Electric Start Housing, RH
72 735-04213B† Lid Seal
73 736 - 0242† Washer, Bell, .340 x .872 x .080
74 731-09429 † Hubcap, 8”, Grey
75 731- 07875† Hubcap, 11”, Grey
76 921-04041 Water Nozzle Adapter
77 731-07487 Water Nozzle
— 925- 06140B† Wire Harness (Not Shown)
— 725-05106† Fuse (Not Shown)
† If Equipped
Part Number Description
12
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