Yard-Man 979T Manual de usuario

21” Self Starter

Self Propelled

Mower

Model 979T

Operator’s Manual

PRINTED IN U.S.A.

FORM NO.

770-10455.fm

(1/2001)

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

MTD PRODUCTS INC. P.O. BOX 368022 CLEVELAND, OHIO 44136-9722

Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-

covered, brush-covered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting

applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator.

In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have

similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized

service dealer or contact the service department, P.O. Box 368022 Cleveland, Ohio 44136-9722.

SECTION 10: ILLUSTRATED PARTS LIST MODEL 979T

Transmission and Pulley

For Reference Only

19 21

17 36 65

32 26 28

13 35

12 47

A22

16 25 31

39 37

73 612

362

Pulley Assembly For

Reference Only

45 49

9810 8

54 53 50

Model 979T

Ref.

No. Part No. Part Description

1. 710-0134 Carriage Screw 1/4-20 x .62

2. 710-0654A Scr. TT:3/8-18:1.00

3. 710-0703 Scr. 1/4-20 x .750

4. 712-0397 Wing Nut 1/4-20

5. 723-0233 Nut, Push .25 I.D. x .50 O.D.

6. 736-0204 Wash. Fl. .334 I.D.x .62 x.03

7. 782-0046B Deck - 21”

8. 710-0653 Scr. TT. 1/4-20 x .375

9. 710-0969 Scr. HL. 1/2-14 x .750

10. 731-1828 Baffle

11. 638-0012 Rear Axle Ass’y

12. 682-0531 Pivot Arm Ass’y

13. 682-7526 Trans. Axle Ass’y

14. 682-7528 Chain Cover Ass’y

15. 710-0653 Scr. TT 1/4-20 x .375

16. 710-0751 Cap Screw HH 1/4-20 x .620

17. 710-0896 Scr. AB 1/4-14 x .625

18. 710-1315 Scr. 3/8 116 x .25

19. 711-0835 Clevis Pin .50 Dia. x 4.82 Lg.

20. 713-0453 Chain-Endls. #48 .500P x 24L

21. 714-0474 Cotter Pin .125O.D. x .75

22. 720-0223 Grip

23. 732-0803A Spring Lever

24. 732-0832 Torsion Spring

25. 736-0270 Bell Wash. .285 x .75 x .082

26. 736-0369 Fl. Wash..508 I.D. 1.000 x.020

27. 738-0529 Nut Shld. .825 Dia. x .165 Lg.

28. 741-0324 Hx.Flg. Brg..506 I.D. x .590 L.

29. 741-0522 Hx.Flg. Brg. .506 I.D. x.715 L.

30. 741-0978 Hx. Slv. Brg..504 I.D. x .830 L.

31. 748-0318 Wheel Rachet

32. 750-0151 Spa. .550 I.D. x /750 O.D.

33. 750-0515 Spa. .51 .D. x .70 O.D. x 38 L.

34. 750-0807 Spa. .385 x .624 x .700

35. 750-1056 Shld. Spa. .385 I.D. X .715 Lg.

36. 782-0568 Brkt. - Ht. Adj. Spring

37. 682-3052 Handle Brkt. Ass’y. R.H.

38. 682-3053 Handle Brkt. Ass’y. L.H.

39. 710-1348 Scr. AB 1/4-14 x .500

40. 731-1901 Trail Shield

41. 732-0842 Trail Shield Wire

42. 611-0064 Fr. Axle Ass’y.

43. 710-1241 Hx Scr. Wash Hd. Hi.-Lo.

44. 710-1242 Scr. Torx, Truss Hi.-Lo.

45. 714-0104 Cotter Pin .072 x 1.12 Lg.

46. 731-1829 Fr. Axle Cover, Yellow

47. 736-0286 Bowed Washer

48. 741-0492A Bush. Block .505 Dia. x .62

49. 782-0565 Control Arm

50. 734-1978 Wheel 8 x 2 Link, Yellow

51. 734-1981A Wheel 9 x 2 Link Yellow, Slv.

52. 736-0105 Spr. Wash. .401 x .870 x .063

53. 736-0504 Wave Wash .510 x .750 x .017

54. 738-0102 Shldr Scr .498 x 1.445 x3/8-16

55. 10622B Spring, Ratchet, Plastic

56. 748-0381 Pawl - R.H.

—748-0188B Pawl - L.H. (Not Illustrated)

58. 16855 Ratchet Pawl Plate

59. 738-0137A Scr. Shld. .340 x .285

60. 712-0414 Top Lock Tab Weld Nut 1/4-20

61. 731-1426 Hubcap -Yellow

64. 725-0157 Cable Tie

65. 710-0604A Hex Scr. 5/16-18

66. 754-0460 V-Belt

67. 742-0741 21” Mulching Blade

68. 753-0609 Blade Adapter Kit

69. 736-0524A Blade Bell Suport

70. 710-1257 Hex Bolt 3/8-24 x 2.5”Lg.

72. 735-0639 Spark Plug Insulator

73. 731-1832 Side Discharge Chute

74. 731-1833 Mulch Cover

75. 631-0066 Rear Chute Ass’y w/ Door

76. 731-1713B Discharge Chute

77. 747-0965 Pivot Rod

78. 732-0819 Torsion Spring

79. 726-0111 Push Cap

80. 731-1874 Chute Door

Ref.

No. Part No. Part Description

Model 979T

14 15

36 30

38 2

19 23 2017

Model 979T

Ref.

No. Part No. Part Description

1. 710-1174 Bolt Cur. Carr. 5/16-18 x 2.0

2. 714-0104 Cotter Pin .072 x 1.12 Lg.

3. 720-0241 Knob Ass’y Wingnut 5/16-18

4. 726-0240 Cable Tie

5. 736-0451 Wash. Sad. .320 ID x.830 OD

6. 712-0429 Hex Nut 5/16

7. 731-2532 Control Cover LH

8731-2533 Control Cover RH

9720-0428 Button

10 715-0168 Pin

11. 782-0156 Lever

12 710-1256 Hi-Low Screw

13. 732-1171 Compression Spring

14. 716-0209 Retaining Ring

15. 732-1172 Torsion Spring

16. 731-0904A Upper Control Housing

17. 731-0924 6 Speed Shift Lever

18. 713-0397 Gear Insert

19. 710-1667A C Sunk Tap Screw #10 x .75 L

20. 732-0627 Shift Lever Spring

21. 16864 6 Spd. Rack Cable Brkt.

22. 731-0905A Lower Control Housing

23. 731-0906 Cable Mounting Cap

24. 731-0620 Control Lever

25. 746-0939 6 Spd. Cable

26. 746-0711A S.P. Cable

27. 647-0058 Control Handle

28. 720-0294 Foam Grip (2 Reqd.)

29. 749-1405 Upper Handle

30. 749-0907A Lower Handle

31. 631-0071 Grassbag Cover w/Label

32. 747-0939 Pivot Rod

33. 726-0106 Cap Nut

34. 747-0937 Frame - Grassbag

35. 747-0940A Rod, Support w/ Rope Guide

36. 664-0074 Grassbag

37. 746-1141 Control Cable 58.25”

38. 712-0397 Wing Nut

39. 710-0703 Carriage Bolt 1/4-20

Ref.

No. Part No. Part Description

Model 979T

Ref.

No. Part No. Part Description

1. 746-0939 6 Spd. Cable

2. 656-0613 Pulley Ass’y Multi- Spd.

3. 710-0167 Scr. 1/4-20 x .50 Carr.

4. 710-0896 Scr. AB 1/4-14 x .625 Hxinwsh

5. 711-1114 Pivot Shaft

6. 712-3006 Nut 1/4-20

7. 732-0807 Torsion Spring LH

8. 736-0270 Bell Wash. .265 X .75 X .062

9. 736-0329 Lock Wash. 1/4 Reg Duty

10. 736-0526 Wave Wash. 1.38 x .88 x .029

11. 738-0924 Shld.Scr. .375 x1/4-14AB

12. 750-1070 Slev Spcr .88 IDx1.00 OD x.48

13. 750-1071 Slev Spcr .88ID x1.13ID x .12

14. 756-0625 Roller Cable

15. 782-7574A 6 Spd. Cable Adj. Bracket

16. 782-7575A 6 Spd. Cable Mt. Bracket

17. 782-7596 6 Sp. Control Arm

18. 782-7597 6 Sp. Pivot Bracket

19. 712-0138 Hex Nut 1/4-28

Model 979T

Ref.

No. Part No. Part Description

1. 712-3025 Hex Jam Nut 5/16-24

2. 736-0425 Bell Washer .325 x .930

3. 756-0656 Pulley

4. 736-3084 Flat Washer .510 x 1.120

5. 712-0896 Hex Jam Nut 1/4-28

6. 782-7598 Belt Keeper

7. 741-0600 Bearing

8. 750-1050 Flange Spacer

9. 682-0027A Idler Bracket Assembly

10. 710-0299 Hex Cap Screw 1/4-28x 1.0

11. 732-0849A Extension Spring

12. 741-0682A Bearing Sleeve

13. 736-0570 Flat Washer .885 x 1.45

14. 721-0329 Oil Seal

15. 618-0253 Upper Housing Assembly

16. 736-0616 Thrust Washer .504 x .70

17. 717-1487 Pinion Shaft 10T

18. 736-0314 Thrust Washer 3/8 x .70

19. 736-0569 Thrust Washer .388 x .625

20. 618-0252 Lower Housing Assembly

21. 710-0642 Hex Screw 1/2-20 x .75

22. 782-7601A Cable Bracket

23. 741-0674 Bearing

24. 611-0066 Shaft Assembly

25. 721-0325 Plug

26. 717-1469 Gear 34T

27. 711-1168 Output Shaft 6T

28. 741-0673 Flange Bearing

29. 721-0329 Oil Seal

30. 782-7595 Pivot Bracket

31. 741-0324 Flange Bearing

32. 736-0369 Flat Washer .508 ID x 1.0

33. 741-0690 Bearing

34. 618-0263A Transmission Assembly

Complete

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