Yard-Man 979T Operator's Manual

Operator’s Manual

21” Self Starter

Self Propelled

Mower

Model 979T

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

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.

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

PRINTED IN U.S.A.

FORM NO.

770-10455.fm

(1/2001)

SECTION 10: ILLUSTRATED PARTS LIST MODEL 979T

41

40

Transmission and Pulley
For Reference Only

A

47

12

35

14

28

26

39

5

4

73

37

15

22

23

27

16

25

31

26

33

30

7

66

2

6

1

4

5

5

4

1

6

64

38

44

2

6

3

9

19

21

61

59

56

18

55

34

16

32

17

58

25

26

51

74

78

36

65

24

13

28

20

11

29

60

31

72

2

Pulley Assembly For
Reference Only

45

49

46

48

42

45

47

48

43

80

79

77

76

75

68

43

52

9

8

10

69

70

20

8

68

67

61

54

53

50

Model 979T

Ref.

No.

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

Part No. Part Description

Ref.

No.

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

Part No. Part Description

21