MTD 663 manual Models 643

Models 643 & 663

Ref.	Part No.	Part Description	Ref.	Part No.	Part Description
No.			No.
1.	712-0116	Lock Jam Nut 3/8-24		784-5038B	Skid Shoe (If Equipped)
2.	756-0178	Flat Idler	31.	736-0242	Bell Washer
3.	784-5632B	Auger Idler Arm	32.	712-3010	Hex Nut 5/16-18
4.	710-0459A	Hex Cap Screw 3/8-24 x 1.50	33.	784-5582A	Shave Plate
5.	738-0281	Shoulder Screw	34.	710-0260	Carriage Bolt 5/16-18 x .62
6.	736-0167	Wave Washer	35.	684-0065	Impeller Assembly
7.	732-0611	Extension Spring	36.	715-0114	Pin
8.	712-3068	Hex Nut 5/16-18	37.	618-0122A	28” Gear Ass’y
9.	710-0276	Carriage Bolt, 5/16-18 x 1.00	38.	605-5196A	28” Spiral RH
10.	736-0119	Lock Washer 5/16	39.	736-0188	Flat Washer
11.	05931A	Bearing Housing	40.	741-0493A	Flange Bushing
12.	741-0309	Ball Bearing	41.	605-5197A	28” Spiral LH
13.	710-0451	Carriage Bolt, 5/16-18 x .75	42.	710-0890A	Shear Bolt 5/16-18 x 1.5
14.	705-5226	Chute Reinforcement	43.	714-0104	Hairpin Clip
15.	684-0041D	28” Housing Ass’y	44.	736-0185	Flat Washer
16.	712-3010	Hex Nut 5/16-18	47.	705-5204A	Chute Crank
17.	712-0429	Lock Nut 5/16-18	48.	720-0201A	Chute Crank Knob
18.	736-0242	Belleville Washer	49.	726-0100	Push Cap
19.	736-0231	Flat Wshr, .344ID x 1.125 OD	50.	712-3068	Hex Nut 5/16-18
24.	784-5618	Bearing Housing	51.	731-2643	Clean-Out Tool
26.	710-0604A	Hex Screw 5/16-18	52.	731-2635	Clean-Out Tool Mount
27.	736-0169	Lock Washer 3/8		777I20711	Label: Handle Panel (L)
28.	712-0798	Hex Nut 3/8-16		777I20722	Label: Handle Panel (R)
29.	741-0245	Hex Flange Bearing		777S30514	Label: Housing Danger
30.	784-5580	Slide Shoe		777S30511	Label: Chute Danger

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