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13
Ref. No. Part No. Part Description
1.
684-0174 Upper Chute Crank Assemby
2.
684-0177 Lower Chute Crank Assembly
3.
684-0178 Bracket Assembly: Mitten Grip
4.
731-04075 Shroud (Model 521)
731-2569 Shroud (Model 721)
5.
710-0895 TT Screw 1/4-15 x 0.75”
6.
710-1003 B Screw #10-16 x 0.625”
7.
710-1882 Hex Fl. Screw 5/16-18 x 1.5”
8.
710-3083 Hex Bolt 5/16-18 x 1.375”
9.
712-0252 Jam Nut
10.
712-0429 Lock Nut
11.
712-3010 Hex Nut 5/16-18
12.
714-0104 Cotter Pin
13.
714-0507 Cotter Pin
14.
720-0201A Knob: Chute Crank
15.
725-0201 Ignition Key
16.
725-2018 Switch: Electric Start Key
17.
726-0100 Push Cap
18.
736-0119 Lock Washer
19.
736-0185 Flat Washer
20.
736-0225 Internal Lock Washer
21.
736-0400 Flat Washer
22.
736-0451 Saddle Washer
23.
7519636 Mitten Grip Handle
24.
684-0190 Spark Plug Access
25.
749-0711A Upper Handle: Gull Wing
26.
749-0796B Lower Handle
27.
710-0167 Carriage Screw 1/4-20 x 0.50”
28.
710-0191 Hex Bolt
29.
710-0323 Machine Screw
30.
710-0352 B Screw1/4-14 x 0.375”
31.
710-0451 Carriage Bolt
32.
710-0642 TT Screw 1/4-20 x 0.75”
33.
710-0773 TT Screw 3/8-16 x 0.5”
34.
710-0896 AB Screw 1/4-14 x 0.625”
35.
710-1005 B Screw 1/4-14 x 0.5”
36.
711-0848A Axle Tube
37.
712-0116 Jam Lock Nut
38.
712-3010 Hex Nut 5/16-18
39.
712-3027 Lock Nut
40.
731-1033 Shave Plate
41.
732-0357A Extension Spring
42.
736-0108 Flat Washer
43.
736-0119 Lock Washer
44.
736-0176 Flat Washer
45.
736-0242 Beleville Washer
46.
736-0326 Flat Washer
47.
736-0329 Lock Washer
48.
741-0475 Plastic Bushing
49.
741-0600 Ball Bearing
50.
746-0910A Clutch Cable
51.
748-0234 Shoulder Spacer
52.
756-0313 Flat Idler
53.
784-5174 Bearing Cup
54.
784-5175B Bracket: Brake Idler
55.
784-5176 Belt Cover
56.
784-5485 Auger Assembly
57.
784-5720 Chute Crank Bracket
58.
684-0196 Auger Housing Assembly
59.
734-1797 Wheel Assembly
60.
710-1090 Hex Fl. Screw 5/16-18 x 1.25”
Ref. No. Part No. Part Description
Models 521 & 721
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 powder black, the part number to order
would be 700-xxxx-0637.
Powder Black: 0637
MTD Red: 0638