Bolens 721 manual Models 521

Models 521 & 721

REF.	PART
NO.	NO.	DESCRIPTION
1	684-04027	Auger Ass'y 21" complete w/Solid Shaft
2	684-04028	Auger Housing Ass’y 21”
3	710-0134	Screw, 1/4-20 x .62
4	710-0167	Carriage Bolt 1/2-20 x .50 LG
5	710-0323	Truss Mach Scr 5/16-18 x .75
6	710-0352	Hex "B" Tap Scr. 1/4-14 x .375" LG
7	710-0597	Hex Screw 1/4-20 x 1.00 Gr. 5
8	710-0642	Hex Tap Scr. 1/4-20 x .75"
9	710-0896	Hex Screw AB:1/4-14 x 0.625”
10	710-1005	Hex Tap Scr. 1/4-14 x .50" LG.
11	712-0324	Hex Nut, 1/4-20 Nylon
12	712-3010	Hex Nut 5/16-18 hd. Gr. 5
13	712-3027	Hex Flange Nut, 1/4-20
14	726-0299	Push Cap x 1/2" Rod
15	731-1033	Shave Plate 2.66 x 19.88 Double
16	732-0357A	Extension Spring .33 OD x 1.12 Lg.
17	736-0119	L-Wash 5/16 ID
18	736-0176	Flat Washer .265 ID x .938 OD x .120
19	736-0326	Flat Washer .510 ID x 1.00 OD x .125
20	736-0329	Lock Washer, 1/4
21	736-3090	Flat Washer .260 x .720 x .060
22	741-0600	Ball Bearing 17 x 40 x 12
23	741-0919	Ball Bearing
24	746-04091	Control Cable
25	748-0234	Shoulder Spacer .25 THK
26	749-04114	Lower Handle
27	750-04230	Flange Spacer

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-

xxxxis painted powder black, the part number to order would be 700-xxxx-0637.

Powder Black: 0637

Red: 0638

REF.	PART
NO.	NO.	DESCRIPTION
28	784-5174	Bearing Cup
29	790-00039	Idler Bracket w/Brake
30	790-00045	Belt Cover
31	790-00062	Belt Keeper

32684-0178 Mitten Grip Bracket

33684-04029 Shroud Ass’y, 5HP Black

34710-0895 Screw, 1/4-15 x .75

35710-1003 Hex Wash B-Tapp Scr #10-16 x .625" Lg.

36710-1090 Hex Flange Screw, 5/16-18x 1.25

37710-1882 Hex Flange Screw 5/16-18 x 1.50 Gr. 5

38710-3083 Hex Screw, 5/16-18 x 1.375

39712-0252 Hex Nut 5/8-32 x .12 Special

40712-0429 Hex Nut, 5/16-18 Gr 5 Nylon

41 725-0201 Ignition Key

42725-2018 Key Switch-Electric Start

43736-0225 L-Washer Internal .625 ID x 1.058 OD

44736-0400 Flat Washer .194" ID x .62" OD x .063

45736-0451 Saddle Washer .320 ID x .93 OD

467519636 Recoil Handle, Mitten

47710-0487 Carriage Bolt 5/16-18 x 2.0 Gr. 1

48720-0284 Handle Knob Assembly 5/16-18

49710-0157 Hex Screw 5/16-24 x .75 Gr. 5

50710-0451 Carriage Bolt, 5/16-18 x.075 GR 1

51 747-04159 Gull Wing Bail

52749-04106 Upper Handle, Gull Wing

53734-04063 Wheel, 7 x 1.5 Star Gray

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