Troy-Bilt 12A-998Q766 Operator'S Manual Download

Page: 21 / 24

Model 998Q

Ref.

No.

Part No.

Part Description

720-0223

Grip

732-0803A

Spring Lever

738-0529

Shoulder Nut.825 x.165 Lg.

710-0751

Cap Screw 1/4-20 x.620

736-0270

Bell Washer.285 ID x.75 OD

748-0318

Wheel Rachet

736-0369

Flat Washer.508 ID x 1.0 OD

682-0531

Pivot Arm Assembly

750-0515

Spacer.510 ID x.70 OD

10.

741-0978

Sleeve Bearing.504 ID x.830 OD

11.

750-1056

Shoulder

12.

710-0653

Tap Screw 1/4-20 x.375

13.

682-7528

Chain Cover Assembly

14.

741-0324A

Flange Bearing.506 ID x.590 Lg

15.

682-7526

Transmission Axle Assembly

16.

618-0263A

Transmission Assembly

17.

710-0604A

Hex Screw 5/16-18

18.

713-0453

Chain

19.

638-0012

Rear Axle Assembly

20.

741-0522

Flange Bearing.506 ID x.715 Lg

21.

732-0832

Torsion Spring

22.

750-0151

Spacer.550 ID x.750 OD

23.

710-1315

Screw 3/8-16 x.25

24.

711-0835

Clevis Pin.50 Dia x 4.82 Lg.

25.

750-0807

Spacer.385 ID x.624 OD

26.

782-0568

Height Adjustment Spring Bracket

27.

710-1652

Screw 1/4-20 x.625

28.

714-0474

Cotter Pin

29.

712-3025

Hex Jam Nut 5/16-24

30.

736-0425

Bell Washer.325 ID x.930 OD

31.

756-0656

Pulley

32.

736-3084

Flat Washer.510 ID x 1.120 OD

33.

712-0896

Hex Jam Nut 1/4-28

34.

782-7598

Belt Keeper

35.

741-0124

Bearing

36.

732-0849A

Extension Spring

37.

750-1050

Flange Spacer

38.

682-0027A

Idler Bracket Assembly

39.

710-0299

Hex Cap Screw 1/4-28 x 1.0

40.

741-0682A

Bearing Sleeve

41.

736-0570

Flat Washer.885 ID x 1.45 OD

42.

721-0329

Oil Seal

44.

618-0253

Upper Housing Assembly

45.

782-7601A

Cable Bracket

46.

741-0690

Bearing

47.

736-0616

Thrust Washer.504 ID x.70 OD

48.

782-7595

Pivot Bracket

49.

712-0429

Hex Nut 5/16-18

50.

711-1168

Output Shaft 6T

51.

717-1469

Gear 34T

52.

741-0674

Bearing

53.

717-1487

Pinion Shaft 10T

54.

736-0314

Thrust Washer 3/8 x.70

55.

736-0569

Thrust Washer.388 x.625

56.

618-0252

Lower Housing Assembly

57.

710-0642

Hex Screw 1/2-20 x.75

58.

611-0066

Shaft Assembly

59.

664-04016

Grass Bag

60.

747-0940A

Support Rod w/ Rope Guide

61.

747-0939

Pivot Rod

62.

747-0937

Grass Bag Frame

63.

631-0071

Grass Bag Cover

64.

726-0106

Cap Nut

65.

741-0673

Bearing

Ref.

No.

Part No.

Part Description

Summary of Contents for 12A-998Q766

Page 1: ...h 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...

Page 2: ...rts Choose from the options below Visit troybilt com for many useful suggestions Click on Customer Support button and you will get the four options reproduced here Click on the appropriate button and...

Page 3: ...rotating parts or under the cutting deck Contact with the blade can amputate hands and feet 9 A missing or damaged discharge cover can cause blade contact or thrown object injuries 10 Many injuries oc...

Page 4: ...ooting or balance 2 Do not mow slopes greater than 15 degrees as shown on the slope gauge 3 Do not mow on wet grass Unstable footing could cause slipping Children Tragic accidents can occur if the ope...

Page 5: ...to improper performance and compromise safety 4 Mower blades are sharp and can cut Wrap the blade or wear gloves and use extra caution when servicing them 5 Keep all nuts bolts and screws tight to be...

Page 6: ...N T I N G A 1 5 S L O P E WARNING Do not mow on inclines with a slope in excess of 15 degrees a rise of approximately 2 1 2 feet every 10 feet A riding mower could overturn and cause serious injury If...

Page 7: ...er Assembling Handle Lift up and pull back on the upper handle to raise the handle into the operating position See Figure 3 Make certain the lower handle is seated securely into the handle bracket ass...

Page 8: ...u want to mulch the grass clippings For bagging purposes you will have to attach the grass bag and its adapter in place of the mulching baffle Remove three wing nuts holding the mulching baffle or sid...

Page 9: ...em Release the clutch control to disengage the drive system Release the clutch control to slow down when approaching an obstacle making a turn or stopping Shift Lever The shift lever is located on the...

Page 10: ...r will automatically revert to the RUN position Refer to the engine manual for further details Your lawn mower is equipped with a constant speed throttle which is set at full throttle for best perform...

Page 11: ...pe out of the way of the bag Continue to hold the lower handle and raise the rear of the grass bag up toward your chest The grass bag will open and the grass clippings will disperse When replacing the...

Page 12: ...lock pins in the larger holes to lock the wheels for straight ahead operation Place pins in smaller holes to allow casters to rotate freely for turning Drive Clutch Control The adjustment wheel is loc...

Page 13: ...to remove it now Engine Care A list of key maintenance jobs required for good performance by the mower is given below Follow the engine manufacturer s Owner s Operator s Manual packed separately with...

Page 14: ...g sure that the air filter and the carburetor are up Remove the bolt and the blade bell support which hold the blade and the blade adapter to the engine crankshaft See Figure 18 Remove the blade and t...

Page 15: ...gainst the engine Drain the fuel tank or place a piece of plastic beneath the cap to prevent gasoline leakage Place shift lever in the first position and tip the mower on its side with air filter faci...

Page 16: ...assembly Pinch both sides of the belt together so that the belt is not in the pulley groove and the lower pulley can be pushed towards the engine See Figure 24 Figure 24 Pivot the control arm back to...

Page 17: ...4 Clean fuel line 5 Clean adjust gap or replace 6 Wait a few minutes to restart do not prime Engine runs erratic 1 Spark plug wire loose 2 Blocked fuel line or stale fuel 3 Vent in gas plugged 4 Wate...

Page 18: ...ute non OEM V Belt can be dangerous by not disengaging completely 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 21 27 31 32 33 34 35 36 37 38 39 40 41 42 43 44 48 49 51 50 52 53 54 56 55 100 62 63 64...

Page 19: ...53 738 0137A Shld Screw 340 ID x 285 OD 54 748 0318 Wheel Rachet 55 736 0270 Bell Washer 265 ID x 75 OD 56 710 0751 Hex Cap Screw 1 4 20 x 620 57 737 3000 Grease Fitting 58 736 0931 Flat Washer 203 ID...

Page 20: ...l 998Q 1 2 3 4 5 6 7 7 8 9 10 11 12 13 14 14 7 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 30 31 32 33 34 35 36 37 38 39 40 41 42 44 45 46 47 14 50 51 52 53 54 55 56 57 48 59 60 63 62 61 49 64 58...

Page 21: ...rew 1 4 20 x 625 28 714 0474 Cotter Pin 29 712 3025 Hex Jam Nut 5 16 24 30 736 0425 Bell Washer 325 ID x 930 OD 31 756 0656 Pulley 32 736 3084 Flat Washer 510 ID x 1 120 OD 33 712 0896 Hex Jam Nut 1 4...

Page 22: ...22 NOTES...

Page 23: ...23 NOTES...

Page 24: ...ts and normal deterioration of the exterior finish due to use or exposure d Service completed by someone other than an authorized service dealer e Troy Bilt does not extend any warranty for products s...

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Troy-Bilt 12A-998Q766, Operator'S Manual

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