MTD 643, 663 manual 731-1300B Lower Chute

Models 643 & 663

Ref.	Part No.	Part Description
No.

1.684-0008A Shift Arm Assembly

2.710-0458 Carriage Bolt 5/16-18 x 1.75”

3.710-0449 Carriage Bolt 5/16-18 x 2.25”

4.710-0788 TT Screw 1/4-20 x 1”

5.712-0429 Hex Lock Nut 5/16-18

6. 746-0778 Z Fitting Cable

7.710-1880 Hex Screw 5/16-18 x .75”

8. 711-0677 Ferrule

9.747-0697 Eyebolt

735-0234 Grommet Only

10.712-3068 Hex Nut 5/16-18

11.	714-0104	Cotter Pin
12.	720-0284	Handle Knob

13.720-0274 Grip

14.736-0242 Belleville Washer

15.	736-0275	Flat Washer
16.	736-0451	Saddle Washer

17.747-0620A Shift Rod: Upper

18.747-0621 Shift Rod: Lower

19. 749-0951 Lower Handle

20.749-0952A Upper Handle: L Style RH

21.749-0953A Upper Handle: L Style LH

22.750-0963 Connector: Shift Rod

23.784-5647 Chute Crank Bracket

24.736-0509 Washer .72 OD x .135 ID

25.710-0262 Carriage Bolt: 5/16-18 x 1.5”

26.710-0451 Carriage Bolt: 5.16-18 x .750”

27.710-0599 TT Screw: 1/4-20 x 0.5”

28.712-3010 Hex Nut 5/16-18

30. 732-0746 Torsion Spring

31.710-0276 Carriage Screws 5/16-18 x 1.0

32. 735-0199A Rubber Bumper

35.712-3027 Hex Flange Lock Nut

38.731-0851A Chute Flange Keeper

Ref.	Part No.	Part Description
No.
39.	731-1300B	Lower Chute

40.710-3015 Hex Cap Screw 1/4-20 x .75

41.	731-0921	Upper Chute
43.	736-0159	5/16 Washer
47.	746-0901	Control Cable
48.	741-0475	Plastic Bushing
49.	736-0159	5/16 Washer

53.684-0036A Handle Assembly RH

54.684-0037B Handle Assembly LH

55.710-1003 Special Hex Screw

56.712-0271 Hex Sems Nut: 1/4-20

57.	712-0693	Hex Nut
59.	720-0232	Shift Knob
60.	725-1672	Lamp Housing

63.725-1658 Halogen Lamp: 50W, 12V

64.726-0152 Mounting Clamp

65. 731-04144 Handle Panel

67.747-1136 Headlight Retainer

68.714-0507 Cotter Pin: 3/32 x .75

69. 747-0877 Cam Rod

70.784-5680 RH Handle Support Bracket

71.784-5679 LH Handle Support Bracket

72.748-0362 Cam Handle Lock

73.748-0363 Handle Lock Pawl

74.732-0145 Compression Spring: .36 x 1.0

75.710-0459A Hex Cap Screw: 3/8-24 x 1.5

76.	784-5619A	Shift Handle
77.	712-0116	Jam Nut, 3/8-24

78.732-0193 Comp. Spring: .39 x .6 x .88

79. 736-0105 Bell Washer

80.784-5682 RH Handle Support Bracket

81.784-5681 LH Handle Support Bracket

82.	711-0653	Clevis Pin
83.	684-0103	Handle Panel

19