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Model 550 – White Outdoor Yard Boss 550 User Manual

Page 21

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21

Model 550

Ref.

No.

Part No.

Part Description

1.

781-0677

Chain Case LH

2.

781-0676

Chain Case RH

3.

754-0457

V-Belt

4.

748-0313

Spacer

5.

741-0413

Hex Flange Bearing

6.

736-0336

Flat Washer

7.

713-0422

Chain

8.

710-0896

Hex Washer Screw 1/4-14

9.

710-0603

Hex Washer Screw 5/16

10.

618-0256

Transmission Assembly

11.

611-0063

Axle Assembly

12.

10622B

Plastic Spring Ratchet

13.

634-0136

Wheel Complete 10 x 4 x 4

14.

712-0456

Hex Nut 1/4-20

15.

712-3027

Hex Flanged Lock Nut 1/4-20

16.

714-0104

Cotter Pin

17.

736-0366

Flat Washer 5/8 ID x 1.0 OD

18.

748-0188B

Pawl LH .345 ID

748-0381

Pawl RH .345 ID

19.

748-0405

Wheel Ratchet 1.62 OD x .5 serr

21.

618-0255

Transmission Assembly Complete

22.

16500A

Hex Bearing Cup

23.

711-1118

Output Shaft 6T Sprocket

24.

717-1432

Helical 34T Gear

25.

721-0213

Oil Seal

26.

736-0187

Flat Washer .64 ID x 1.24 OD

27.

736-0336

Flat Washer 5/8 x 1.0

28.

741-0413

Hex Flange Bearing .631 ID

IMPORTANT: For a proper
working machine, use Factory
Approved Parts.

V-BELTS are especially designed
to engage and disengage safely.
A substitute (non OEM) V-Belt can
be dangerous by not disengaging
completely.

29.

741-0414

Flange Bearing .629 ID

30.

741-0415

Flange Bearing .566 ID

31.

719-0325

Lower Housing

32.

748-0373

Flange Bearing .503 ID

33.

719-0324A

Upper Housing

34.

748-0208A

Flange Bearing .378 ID

35.

710-0589

Hex Washer Screw #10-16 x .75

36.

717-1433

Pinion Shaft 10T

37.

721-0329

Oil Seal

38.

736-0314

Thrust Washer .382 ID x .684 OD

39.

736-0520

Flat Washer .504 ID x .70 OD

40.

741-0479

Thrust Bearing .375 ID x .812 OD

41.

656-0008

Pulley Ass’y Idler w/ Bearing

42.

741-0556

Needle Bearing .375 ID x .375 OD

43.

710-0589

Hex Screw #10-16 x .75

44.

710-1062

Hex Cap Screw 1/4-20 x 1.25

45.

712-0138

Hex Nut 1/4-28

46.

712-3045

Hex Jam Nut 5/16-24 LH Thd

47.

732-0357A

Extension Spring 1.12 Lg

48.

736-0270

Bell Washer .265 ID x .75 OD

49.

736-0329

Lock Washer 1/4

50.

736-0425

Bell Washer .325 ID x .930 OD

51.

738-0440

Shoulder Spacer .375 ID x .165 OD

52.

738-0826

Shoulder Bolt 1/4-28 x .375

53.

756-0656

Flat Pulley 5.06 Dia

54.

782-7569

Belt Keeper

55.

682-0054

Idler Bracket

Ref.

No.

Part No.

Part Description