MTD 122-456R105 User Manual

122-456R105 (52487) (1992)Page 1 of 5
Front Bearing Assembly

Ref # Part Number Qty Description

1 746-0906 Cable 44.75" Lg. New Part
2 710-0599 Hex Wash. Hd. TT-Tap Scr. 1/4-20 x .5" Lg.
3 710-0653 Hex Wash. Hd. Tap Scr. 1/4-20 x .38" Lg.
4 782-7550 Belt Cover New Part
5 715-0246 Spring Pin 3/16" Dia. x 1.25" Lg.
6 756-0963 3/8" "V"-Pulley 2.75" O.D. New Part
7 754-0271 "V"-Belt
8 756-0964 3/8" "V"-Pulley 2.44" O.D. New Part

9 715-0159 Spring Pin 3/16" Dia. x .875" Lg. New Part
10 738-0872 Front Axle New Part
11 731-1361 Axle Shroud New Part
12 682-0015 Front Bearing Ass'y. New Part
13 736-0447 Wave Wash. 1" I.D. x 1.5"
14 782-0512 Height Adj. Plate - R.H. New Part

122-456R105 (52487) (1992)Page 2 of 5
Front Bearing Assembly

782-0511 Height Adj. Plate - L.H. New Part

15 732-0706 Spring Lever - R.H. New Part

732-0707 Spring Lever - L.H. New Part
16 720-0190 Spring Lever Knob
17 682-0509 Height Adj. Pivot Plate Ass'y.
18 736-0474 DD Washer 1.5" O.D. New Part
19 716-0102 Snap Ring
20 UNKNOWN
21 748-0357 14-T Spur Gear New Part
22 716-0104 E-Ring
23 782-7551 Wheel Dust Cap New Part
24 634-0021 Front Wheel Ass'y. New Part
25 736-3013 Fl-Wash..531" I.D. x 1" O.D.
26 714-0104 Hairpin Clip 5/16" Dia.
27 720-0249 Hub Cap
28 656-0010 Idler Ass'y. New Part
29 738-0873 Shld. Bolt .374" Dia. x 1.94"
30 782-7524 Idler Pivot Brkt. New Part
31 738-0826 Shld. Bolt .375" Dia. x .4"
32 736-0344 Fl-Wash..39" I.D. x 1" O.D.
33 682-0014 Idler Brkt. Ass'y. New Part
34 712-0271 Hex Sems Nut 1/4-20 Thd.
35 738-0572 Shld. Bolt 3/8" Dia. x 1.16"
36 736-0270 Bell-Wash..265" I.D. x .75" O.D.
37 732-0709 Spring Extension 1.29" Lg. New Part
38 712-0138 Hex Nut 1/4-28 Thd.
39 750-0807 Spacer 385" I.D x 625" O.D
40 756-0558 Fl-Idler 1.5" O.D.
41 741-0556 Needle Brg..375" I.D.
42 736-0331 Bell-Wash..39" I.D. x 1.13" O.D.
43 UNKNOWN
44 712-0798 Hex Nut 3/8-16 Thd.

122-456R105 (52487) (1992)Page 3 of 5

Handle And Engine Assembly

Handle And Engine Assembly

Ref # Part Number Qty Description

1 747-0824 Control Handle Ass'y. New Part
2 710-1205 Rope Guide Bolt
3 712-0324 Hex L-Nut 1/4-20 Thd.
4 710-0671 Curved Carr. Bolt 5/16-18 x 1.38" Lg.
5 736-0119 L-Wash. 5/16" I.D.
6 712-0267 Hex Nut 5/16-18 Thd.
7 710-0605 Oval C-Sunk Mach. Scr. New Part
8 736-0501 Spr. Wash..66" I.D. New Part

9 712-0291 Hex L-Nut 1/4-20 Thd.
10 746-0876 Throttle Lever New Part
11 749-0538C Upper Handle New Part
12 720-0226 Foam Grip (Optional)
13 749-0372B Lower Handle

122-456R105 (52487) (1992)Page 4 of 5

14 726-0240 Cable Tie
15 764-0310 Rear Catcher Frame
16 746-0550 Control Cable - 39" (440R, 442R, 450R, 452R)

746-0553 Control Cable - 36" (446R,448R, 456R, 458R)

17 746-0842 Throttle Control Wire - 51" New Part; For models (440R,

442R, 450R, 452R)

746-0843 Throttle Control Wire - 55" New Part; (446R, 448R, 456R,

458R)

18 764-0311 Front Catcher Frame
19 764-0309 Grass Bag
20 714-0104 Int. Cotter Pin 5/16" Dia.
21 732-0678 Door Spring - R.H.
22 732-0677 Door Spring - L.H.
23 782-7000 Rear Discharge Door
24 751-0568 Cable Clamp
25 746-0875 Throttle Body New Part
26 811-00185 Throttle Box Comp. New Part: (Incl. Ref. 7, 8, 9, 10, 25)
27 Engine
28 710-1237 Hex Wash. Hd. Scr. #10-32 x .62" Lg.
29 735-0639 Spark Plug Boot (Optional)
30 732-0700 Wire Rod New Part
31 731-1236 Rear Flap
32 753-484 Blade Adapter Kit (Keyed)

753-0485 Blade Adapter Kit (Splined)

33 710-1044 Hex Bolt 3/8-24 x 1.5" Lg. (Used w/Keyed Adapter)

710-0757 Hex Bolt 7/16-20 x 1.5" Lg. (Used w/Splined Adapter)

34 736-0452 Bell-Wash..39" I.D. (Used w/Keyed Adapter)

736-0453 Bell-Wash..46" I.D. (Used w/Splined Adapter)
35 710-1055 Hex Bolt 3/8-24 x 1" Lg.
36 742-0306A 21" Blade

742-0563 21" Mulching Blade (Optional)
37 736-0169 L-Wash. 3/8" I.D.
38 712-0241 Hex Nut 3/8-24 Thd.
39 736-0356 Bell-Wash..39" I.D. x 1.38"
40 712-0798 Hex Nut 3/8-16 Thd.
44 738-05078 Shld. Bolt .5" Dia. x .357"
45 736-0105 Bell-Wash..38" I.D. x .88" O.D.
46 738-0102 Axle Bolt
47 720-0190 Spring Lever Knob
48 732-0417A Spring Lever
50 14765 Pivot Bar
51 782-5002 Front Baffle

Handle And Engine Assembly

Ref # Part Number Qty Description

52 710-0654A Hex L-Wash. Hd. Scr. 3/8-16 x 1" Lg
53 782-5003 Rear Baffle
54 710-1017 Torx Mach. AB-Tap Scr. 1/4 x .62" Lg
55 710-0892 Hex L-Wash. Hd. AB-Tap Scr. 1/4 x .62" Lg.
56 682-0503 Handle Brkt. Ass'y.- R.H.
57 682-0502 Handle Brkt. Ass'y.- L.H.
58 782-0020 21" R.D. Deck New Part
59 634-0020 Wheel Ass'y. Comp. New Part
60 720-0249 Hub Cap (Optional)
61 764-0433 Grass Bags New Part
62 731-1322 Hard Top Cover New Part
63 710-0286 Pan Hd. Mach. Scr. 1/4-20 x .5" Lg. For models 440R thru

122-456R105 (52487) (1992)Page 5 of 5

448R only.

64 712-0324 Hex Nylon L-Nut 1/4-20 Thd. For models 440R thru 448R

only.

65 782-9011 Mounting Bracket New Part
66 782-5007 Mulching Baffle Plug New Part; (Optional)
67 782-5004 Mulching Baffle - R.R. New Part; (Optional)
68 16309A Cable Mtg. Brkt.
69 710-0726 Hex Wash. AB-Tap Scr. 5/16" x 75" Lg
70 746-0906 S.P. Cable 44.75" Lg. New Part
71 747-0854 Drive Control Lever New Part