MTD Single Speed Transmission Guide and Parts for Enhanced Performance

Page 37

Single-speed Transmission

REF.

PART

 

NO.

NO.

DESCRIPTION

1

618-0318

Clutch Collar†

2

710-0788

Self-tapping Screw, 1/4-20 x 1.0

3

711-1274

Drive Shaft

4

711-1280

Counter Shaft

5713-0474 22-link Chain, #420

6713-0478 14-tooth Sprocket

7717-1422 Sprocket Bevel Gear, 42/10

8717-1565 29-tooth Spur Gear

9717-1569 20-tooth Spur Gear

10718-0652 Counter Shaft Coupling

11719-0394 Lower Housing

12a

736-0336

Flat Washer, 5/8 x 1.0 x .030*

12b

736-0337

Flat Washer, 5/8 x 1.0 x .040*

12c

736-0349

Flat Washer, 5/8 x 1.0 x .020*

13736-0519 Flat Washer, .70 x 1.125 x .031

14741-0336 Flange Bearing, 5/8 x 3/4 x 3/4

15741-0337 Flange Bearing, 5/8 x 3/4 x 15/16

16750-1238 Spacer, .635 x 1.0 x .27

17611-0112 Detent Shaft Assembly†

611-0133 Detent Shaft Assembly‡

18618-0369 Differential Assembly†

618-0424 Differential Assembly‡

19661-0006 Brake Assembly

20710-1325 Self-tapping Screw, 1/4-20 x 1.625

21710-1206 Self-tapping Screw, 1/4-20 x 2.375

22

717-0678

Brake Pad

23

732-0863

Compression Spring

24

741-0862

Detent Ball

25

761-0202

Brake Disc

26

711-1331

Input Shaft†

 

711-1430

Input Shaft‡

27716-0385 Retaining Ring, .394†

716-0108 Retaining Ring, .437‡

28717-1571 12-tooth Bevel Pinion†

717-1464 14-tooth Bevel Pinion‡

29719-0391A Upper Housing

30736-0335 Thrust Washer, .63 x 1.24 x .062†

736-0723 Thrust Washer, .635 x 1.25 x .042‡

31741-0525 Needle Bearing, .625 x .875

32

718-0228

Clutch Collar‡

33

711-1431

Drive Shaft‡

34750-1234 Spacer, .633 x 1.0 x .513

35717-1362 42-tooth Bevel Gear‡

36717-1363 42-tooth Bevel Gear‡

37736-0495 Thrust Washer, 1.0 x .632 x .0

38741-0340 Sleeve Bearing, .75 x .1.0 x 1.0

39721-0338 Seal, .75 x 1.0 x .125

40

716-0231

E-ring, .75

41

618-0551

Transmission Assembly Complete

*If rebuilding transmission for any reason, use applicable flat washer (12a, 12b, or 12c) in this application allowing proper end play as instructed in MTD ’s Service Manual.

IMPORTANT: One of two different transmissions may be found on your lawn tractor (618-0307B & 618-0307C). Refer to the model plate found on the rear right portion of the transmission’s lower housing before ordering replacement service parts.

†Used on Single-speed transmission 618-0307B ONLY.

‡Used on Single-speed transmission 618-0307C ONLY.

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Image 37
Contents OPERATOR’S Manual Important Read Safety Rules and Instructions CarefullyFinding Your Model Number Table of ContentsMTD Products INC Calling Customer SupportGeneral Operation Important Safe Operation PracticesSlope Operation ServiceDo not ChildrenSafety Labels found on your unit USE this page AS a Guide to Slope GaugeAttaching the Battery Cables Attachments & AccessoriesTractor SET-UP GAS and OIL FILL-UPControls Systems Indicator Monitor Ignition SwitchThrottle Control Lever Choke ControlLift Lever PTO Power TAKE-OFF LeverDrive Pedal Parking Brake ButtonSetting the Cutting Height Safety Interlock SwitchesOperation Starting the EngineDriving the Tractor Stopping the EngineDriving on Slopes Operating the HeadlightsUsing the Lift Lever AdjustmentsEngaging the PTO Power TAKE-OFF Lever MowingSide to Side Seat AdjustmentFront to Rear Side to Side Steering Adjustment Brake AdjustmentCarburetor Adjustment MaintenanceCleaning the Engine and Deck EngineLift Cutting Deck RemovalFront of Tractor Inch decks Changing the Deck BeltsUpper Drive Belt Changing the Transmission Drive BeltsLower Drive Belt Cutting Blades Lubrication Trouble Possible Corrective Action Causes Troubleshooting GuidePart Description Models 607, 608Green Blue Electrical SystemModels 607 Tractor Body Model Dash Panel Models 607, 608 Lift Assembly 3126 Steering Assembly 4413 Drive System 31 30 12c Single-speed Transmission Hook spring, Ref , here PTO belt for 42 deck shown Power Take-off System Inch Deck Brake Assembly Cutting Decks Briggs & Stratton OHV V-Twin Briggs & Stratton Opposed Twin Engine AccessoriesMANUFACTURER’S Limited Warranty

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