Before you operate your unit, carefully and completely read manuals supplied with the unit. The contents will provide you with an understanding of safety instructions and controls during normal operation and maintenance.

For your safety and the safety of others always read, understand, and follow all DANGER, WARNING, and CAUTION messages found in manuals and on safety decals.

Hardware descriptions are given in decimals.

Decimals to Fractions

SERVICE AND REPLACEMENT PARTS

When ordering replacement parts or making service inquiries, know the Model and Serial numbers of your unit and engine.

Numbers are located on the product registration card in the unit literature package. They are printed on a serial number label, located on the frame of your unit.

???Record Unit Model and Serial numbers here:

???Record Engine Model and Serial numbers here:

A warranty registration card must be ???lled out, signed, and returned at time of purchase. This card activates the warranty. Claims meeting requirements during limited warranty period will be honored.

YOUR SATISFACTION IS IMPORTANT

Questions? Please follow these helpful steps:

1.Refer to the manuals supplied with your unit.

They will guide you through safe and proper operation and maintenance.

They contain speci???cations on your unit.

If your questions are not answered in these manuals, go to step number two.

2.Contact Your Dealer.

Our dealers will be happy to supply any service or advice required to keep your unit operating at peak ef???ciency.

A factory trained staff is available to support your equipment needs. They stock genuine Gravely parts and lubricants manufactured with the same precision and skill as the original.

If your questions are not resolved by the support staff, ask for the manager or owner.

When contacting your Dealer supply your model and serial numbers.

TO SPEED PARTS ORDERING:

1.Know the model and serial numbers of your unit.

2.Know the part number required.

3.Know the quantity required.

4.Know the part description.

MODELS

Model 987070

16 H.P. Briggs & Stratton with Hydraulic Lift Serial No. 000101 and up

Model 987071

13.5 HP Robin Engine with Hydraulic Lift Serial No. 000101 and up

Model 987072

20.5 H.P. Robin with Hydraulic Lift Serial No. 000101 and up

TABLE OF CONTENTS

DECALS

Decals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

TRANSMISSION

Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Number One Shaft - Forward Clutch . . . . . . . . . . . . . 7 Number Two Shaft - Reverse Clutch . . . . . . . . . . . . . 8 Number Three Shaft - 3rd and 4th Gear . . . . . . . . . . 9 Number Four Shaft - Idler . . . . . . . . . . . . . . . . . . . . . 9 Number Five Shaft - 1st and 2nd Gear . . . . . . . . . . . 9 Number Six Shaft - Brake/Sliding Gear . . . . . . . . . . 10 Number Seven Shaft - Pinion/Final Drive. . . . . . . . . 11 Number Eight Shaft - Differential Assembly. . . . . . . 11 Number Nine Shaft - PTO Clutch. . . . . . . . . . . . . . . 12 Number Ten Shaft - PTO Drive Assembly . . . . . . . . 13 Number Eleven - Fwd-Rev Clutch Assembly . . . . . . 13 Number Twelve - Transmission Case Assembly. . . . 14 Number Thirteen Transmission Cover . . . . . . . . . . . 15

FRAME, DECK, SEAT AND WHEELS

Frame. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Hood and Grille . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Rear Deck and Seat. . . . . . . . . . . . . . . . . . . . . . . . . 20

Rear Hitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Front and Rear Wheels . . . . . . . . . . . . . . . . . . . . . . 23

HYDRAULICS

Manual Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

STEERING

Steering - 13.5 & 16 HP Units . . . . . . . . . . . . . . . . . 26

Steering - 20.5 HP Units . . . . . . . . . . . . . . . . . . . . . 28

Direction Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Transmission Controls . . . . . . . . . . . . . . . . . . . . . . . 32

Brake Linkage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

ENGINE, FUEL AND EXHAUST

Robin -13.5 HP Units . . . . . . . . . . . . . . . . . . . . . . . . 36

Briggs and Stratton - 16 HP Units . . . . . . . . . . . . . . 38

Robin - 20.5 HP Units . . . . . . . . . . . . . . . . . . . . . . . 40

ELECTRICAL

Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Continuity Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . 44

Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

6

16

28

PJ0071

Model 987070, 071, 072

1

2

10

13

15

16

8

3

11

17

PJ0081

NUMBER SEVEN -PINION / FINAL DRIVE

4

NUMBER EIGHT - DIFFERENTIAL ASSEMBLY

7

Model 987070, 071, 072

PJ0131

8 17

PJ0141

Model 987070, 071, 072

6 7

8

37

2

4

34

3

36

38

22

24

25

26

33

14

40

29

2

1

4

7

9

3

6

20

22

14

26

20

17

19

23

25

27

28

29

30

26

1

3

2

4

5

6

7

26

28

27

26

23

24

41

31

26

47

25

Model 987072

35

45

32

26

51

4

5

6

7

8

17

18

PJ0250

29

28

33

19

34

3537

2

3

16

21

238

32

38

4

3

5

4

7

18

22

17

22

23

24

25

32

11

20

37

39

40

8

11

16

14

15

38

39

41

10

9

12

13

31

Model 987071

2

3

35

4

17

16

34

9

31

30

28

25

20

19

18

28

Model 987072

28

4

3

16

1

Model 987070, 071, 072

23

24

25

30

5

29 4

7

9

6

47

37

4

38

43

9 21

42

49

58

13

4

11

14

12

15

11

PJ0023

Model 987070

Ammeter

BLACK

Pump

Hydraulic

PJ0310

B L U E / W H I T E

G R E E N / W H I T E

LIFT PUMP

SWITCH

BLUE

BLACK

B R O W N / Y E L L O W

BLACK

PJ0431

BLACK

B L U E / W H I T E

G R E E N / W H I T E

LIFT PUMP

SWITCH

BLUE

BLACK

B R O W N / Y E L L O W

BLACK

PJ0432