Exmark 790 User Manual

LAZER Z® MODELS

ADVANTAGE SERIES

MODELS

For Serial Nos.
790,000 & Higher

Part No. 4500-485 Rev. D

-1-

READ OPERATOR’S MANUAL BEFORE

OPERATING OR SERVICING EXMARK EQUIPMENT.

TABLE OF CONTENTS

Description Page

Brake Handle Assembly ................................................ 25

Caster Wheel Assembly ........................................... 18-19

Controls Group .............................................................. 22

Cutter Housing Assembly ................................ 5, 8, 11, 14

Decal Group .................................................................. 37

Deck Group ................................................................ 3-15

Deck Support Group ...................................................... 20

Deck Idler Assembly ...................................................... 15

Electrical Diagram .................................................... 38-39

Electrical Group ............................................................. 36

Electrical Logic Schematic ........................................ 40-41

Engine Group ........................................................... 30-33

Fuel Tank Group ............................................................ 28

Fuel Tank Assembly ...................................................... 29

Height of Cut Assembly ................................................. 21

Hydraulic Group ............................................................ 34

Mainframe Group ........................................................... 16

Motion Control Group ................................................... 23

Park Brake Group ......................................................... 24

Pump Idler Assembly ..................................................... 35

ROPS Assembly ............................................................ 17

Seat Group .................................................................... 26

Seat W/Tracks Assembly ............................................... 27

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48” DECK GROUP

Item Part No. Description Qty.

Item Part No. Description Qty.

1 109-9027 Asm, Deck W /Decals 484 ..................... 1

2 103-6401 Blade-Notched ...................................... 3

O

103-6386 Blade, Low Lift ...................................... 3

103-6381 Blade, Solid .......................................... 3

103-6396 Blade, Extreme ..................................... 3

3 323-8 Screw, HH 3/8-16 x 1 1/2 ...................... 18

4 109-2872 Spacer-Pulley ....................................... 2

5 109-0977 Pulley, Idler 5" ...................................... 1

6 109-2796 Pulley, Idler 6" ...................................... 1

7 3231-44 Bolt, Carriage 3/8-16 x 2 1/2 ................. 2

8 109-6658 Nut, Nyloc 3/8-16 Flg ............................31

9 109-2883 Asm, Deck Idler .................................... 1

10 109-7188 Asm, Discharge Chute.......................... 1

10:1 109-2738 Chute, Discharge .................................. 1

10:2 109-8675-01 Bracket, Discharge Chute ..................... 1

10:3 3231-22 Bolt, Carriage 3/8-16 x 1 ....................... 3

Exmark red touch up paint (spray paint – P/N 1-850337 - .6 oz liquid bottle – P/N 103-9140).

O Requires installation of Micro-Mulch accessory for proper mulching. Mulch kit P/N MK484.
Q Apply Mobil HTS grease (P/N 103-5217 1.5 oz packet) (or a food-grade anti-seize) between the spindles and bearings. DO NOT use a

103-6391 Blade, Mulching .................................... 3

copper or nickel based anti-seize.

10:4 109-6658 Nut, Nyloc 3/8-16 Flg............................ 3

11 3231-28 Bolt, Carriage 3/8-16 x 1 1/4 ................. 2

12 109-8070 Belt, V-B X 175.75 ................................ 1

13 109-6982 Wireform, Cover ................................... 2

14 109-6935 Cover, Belt RH 46-56 ........................... 1

15 109-6936 Cover, Belt LH 46-56 ............................ 1

16 116-0133 Extension-Spring .................................. 1

17 109-9010-01 Baffle, Discharge .................................. 1

18 3231-22 Bolt, Carriage 3/8-16 x 1....................... 2

19 109-9851 Axle, Anti-Scalp Roller .......................... 3

20 1-603299 Roller-Scalp, Anti ................................. 3

21 98-5975 Washer, Spring Disc 3/8 ...................... 3

22 3211-46 Screw, HH 3/8-24 x 2 Gr8 .................... 3

23 103-7263 Kit, Antiscalp Roller .............................. 3

24 109-9017 Kit, Cutter Housing 48 .......................... 3

25 109-9642 Asm, Deck Complete 484 .................... 1

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48” DECK W/DECALS ASSEMBLY – 109-9027

Item Part No. Description Qty.

Item Part No. Description Qty.

2 1-303508 Decal-Warning, Discharge ..................... 1

3 1-403005 Decal-Danger ......................................... 2

4 1-633922 Decal, Antiscalp ..................................... 1

5 98-5954 Decal-Cover, Missing ............................. 2

6 109-3148 Decal, Bolt Torque ................................. 1

7 116-0033 Decal, Ultracut 48 Series 4 .................... 1

8 109-9361 Decal, Belt Routing ................................ 1

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CUTTER HOUSING ASSEMBLY – 109-9017

Item Part No. Description Qty.

Item Part No. Description Qty.

1 103-1330 Guard, Bearing Top ............................... 1

2 103-2535 Spacer, Guard Bottom ........................... 1

3 103-2802 Washer, Spring Disc 3/4 ........................ 1

4 103-2982 Key, Machine 1/4 x 3/16 x 3/4 ................ 1

5Q 103-9086 Kit, Splined Spindle ............................... 1

6 103-3037 Bushing, Splined .................................... 1

 Apply Mobil HTS grease (P/N 103-5217 1.5 oz packet) (or a food grade antiseize) between the jackshaft and bearings, jackshaft and

sheaves, spindles and bearings, spindles and sheaves, and under top bearing guard. DO NOT use a copper or nickel based antiseize.

Q Kit includes items 3, 4, 6, 8, & 10.

7 103-8353 Housing, Cutter ..................................... 1

8 109-9220 Screw, SEMS 1/2-20 x 2.19 ................... 1

9 116-1444 Sheave, Blade Drive ............................. 1

10 3217-46 Nut, Hex 3/4-16 Heavy .......................... 1

11 103-8280 Kit, Cutter Housing ................................ 1

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52” DECK GROUP

Item Part No. Description Qty.

Item Part No. Description Qty.

1 109-9012 Asm, Deck W / Decals 524 .................... 1

2 1-603299 Roller, Scalp, Anti ................................. 3

3 98-5975 Washer, Spring Disc 3/8 ....................... 3

4 116-0133 Extension-Spring .................................. 1

5 109-9851 Axle, Anti-Scalp Roller .......................... 3

6 103-6402 Blade-Notched ...................................... 3

O

103-6387 Blade, Low Lift ...................................... 3

103-6382 Blade, Solid .......................................... 3

103-6397 Blade, Extreme ..................................... 3

7 109-0977 Pulley, Idler 5" ...................................... 1

8 109-2796 Pulley, Idler 6” ...................................... 1

9 109-2872 Spacer-Pulley ....................................... 2

10 109-2883 Asm, Deck Idler .................................... 1

11 109-4994 Belt, V-B ............................................... 1

12 109-6658 Nut, Nyloc 3/8-16 Flg ............................31

13 109-6935 Cover, Belt RH 46-56 ........................... 1

Exmark red touch up paint (spray paint – P/N 1-850337 - .6 oz liquid bottle – P/N 103-9140).
O Requires installation of Micro-Mulch accessory for proper mulching. Mulch kit P/N MK524.

103-6392 Blade, Mulching .................................... 3

14 109-6936 Cover, Belt LH 46-56 ............................ 1

15 109-6982 Wireform-Cover .................................... 2

16 109-7188 Asm, Discharge Chute ......................... 1

16:1 109-2738 Chute, Discharge ................................. 1

16:2 109-8675-01 Bracket, Discharge Chute .................... 1

16:3 3231-22 Bolt, Carriage 3/8-16 x 1....................... 3

16:4 109-6658 Nut, Nyloc 3/8-16 Flg............................ 3

17 109-9915-01 Baffle, Discharge 52/60 ........................ 1

18 323-8 Screw, HH 3/8-16 x 1 1/2 ..................... 18

19 3211-46 Screw, HH 3/8-24 x 2 Gr8 .................... 3

20 3231-22 Bolt, Carriage 3/8-16 x 1....................... 2

21 3231-28 Bolt, Carriage 3/8-16 x 1 1/4 ................. 2

22 3231-44 Bolt, Carriage 3/8-16 x 2 1/2 ................. 2

23 103-7263 Kit, Antiscalp Roller .............................. 3

24 109-9018 Kit, Cutter Housing 52 .......................... 3

25 109-9644 Asm, Deck Complete 524 .................... 1

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52” DECK W/DECALS ASSEMBLY – 109-9012

Item Part No. Description Qty.

Item Part No. Description Qty.

2 1-303508 Decal, Warning Discharge ..................... 1

3 1-403005 Decal, Danger ........................................ 2

4 1-633922 Decal, Antiscalp ..................................... 1

5 98-5954 Decal, Cover Missing ............................. 2

6 116-0034 Decal, Ultracut 52 Series 4 .................... 1

7 109-3148 Decal, Bolt Torque ................................. 1

8 109-9361 Decal, Belt Routing ................................ 1

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CUTTER HOUSING ASSEMBLY – 109-9018

Item Part No. Description Qty.

Item Part No. Description Qty.

1 103-8353 Housing, Cutter ...................................... 1

2 103-2535 Spacer, Guard Bottom ........................... 1

3Q 103-9086 Kit, Splined Spindle ................................ 1

4 103-2982 Key, Machine 1/4 x 3/16 x 3/4 ................ 1

5 103-1330 Guard, Bearing Top ............................... 1

6 116-0186 Sheave, Blade Drive .............................. 1

 Apply Mobil HTS grease (P/N 103-5217 1.5 oz packet) (or a food grade antiseize) between the jackshaft and bearings, jackshaft and

sheaves, spindles and bearings, spindles and sheaves, and under top bearing guard. DO NOT use a copper or nickel based antiseize.

Q Kit includes items 3, 4, 6, 8, & 10.

7 103-2802 Washer, Spring Disc 3/4 ........................ 1

8 3217-46 Nut, Hex 3/4-16 Heavy .......................... 1

9 103-3037 Bushing, Splined ................................... 1

10 109-9220 Screw, SEMS 1/2-20 x 2.19 ................... 1

11 103-8280 Kit, Cutter Housing ................................ 1

-8-

Item Part No. Description Qty.

60” DECK GROUP

Item Part No. Description Qty.

1 109-9013 Asm, Deck W / Decals 604 .................... 1

3 103-6403 Blade, Notched .................................... 3

O

103-6388 Blade, Low Lift ...................................... 3

103-6383 Blade, Solid .......................................... 3

103-6398 Blade, Extreme ..................................... 3

4 109-2872 Spacer-Pulley ....................................... 2

5 109-2796 Pulley, Idler 6" ...................................... 1

6 109-2883 Asm, Deck Idler .................................... 1

7 109-0996 Pulley, Idler 8"Flat ................................ 1

8 109-8073 Belt, V-5V ............................................. 1

9 116-0133 Extension-Spring .................................. 1

10 3231-44 Bolt, Carriage 3/8-16 x 2 1/2 ................. 2

11 109-6658 Nut, Nyloc 3/8-16 Flg ............................37

12 109-9915-01 Baffle, Discharge 52/60 ........................ 1

13 3231-22 Bolt, Carriage 3/8-16 x 1 ....................... 2

Exmark red touch up paint (spray paint – P/N 1-850337 - .6 oz liquid bottle – P/N 103-9140).
O Requires installation of Micro-Mulch accessory for proper mulching. Mulch kit P/N MK604.
.

103-6393 Blade, Mulching .................................... 3

14 109-6982 Wireform-Cover .................................... 2

15 116-0094 Cover-Belt, RH ..................................... 1

16 109-6938 Cover-Belt, LH ...................................... 1

17 109-7188 Asm, Discharge Chute ......................... 1

17:1 109-2738 Chute, Discharge ................................. 1

17:2 109-8675-01 Bracket, Discharge Chute .................... 1

17:3 3231-22 Bolt, Carriage 3/8-16 x 1....................... 3

17:4 109-6658 Nut, Nyloc 3/8-16 Flg............................ 3

18 3231-28 Bolt, Carriage 3/8-16 x 1 1/4 ................. 2

19 109-9851 Axle, Anti-Scalp Roller .......................... 4

20 1-603299 Roller-Scalp, Anti ................................. 4

21 98-5975 Washer, Spring Disc 3/8 ...................... 4

22 3211-46 Screw, HH 3/8-24 x 2 Gr8 .................... 4

23 103-7263 Kit, Antiscalp Roller .............................. 3

24 109-9019 Kit, Cutter Housing 60 .......................... 3

25 109-9646 Asm, Deck Complete 604 .................... 1

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60” DECK W/DECALS ASSEMBLY – 109-9013

Item Part No. Description Qty.

Item Part No. Description Qty.

2 1-303508 Decal, Warning, Discharge .................... 1

3 1-403005 Decal, Danger ........................................ 2

4 1-633922 Decal, Antiscalp ..................................... 1

5 116-0025 Decal, Ultracut 60 Series 4 .................... 1

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6 109-3148 Decal, Bolt Torque ................................. 1

7 109-9361 Decal, Belt Routing ................................ 1

8 98-5954 Decal-Cover, Missing ............................. 2

CUTTER HOUSING ASSEMBLY – 109-9019

Item Part No. Description Qty.

Item Part No. Description Qty.

1 103-1330 Guard, Bearing Top ............................... 1

2 103-2535 Spacer, Guard Bottom ........................... 1

3 103-2802 Washer, Spring Disc 3/4 ........................ 1

4 103-2982 Key, Machine 1/4 x 3/16 x 3/4 ................ 1

5Q 103-9086 Kit, Splined Spindle ................................ 1

 Apply Mobil HTS grease (P/N 103-5217 1.5 oz packet) (or a food grade antiseize) between the jackshaft and bearings, jackshaft and

sheaves, spindles and bearings, spindles and sheaves, and under top bearing guard. DO NOT use a copper or nickel based antiseize.

Q Kit includes items 3, 4, 6, 8, & 10.

6 103-3037 Bushing, Splined ................................... 1

7 103-8353 Housing-Cutter ...................................... 1

8 109-9220 Screw, SEMS 1/2-20 x 2.19 ................... 1

9 109-8251 Sheave, Blade Drive 7.25 ...................... 1

10 3217-46 Nut, Hex 3/4-16 Heavy .......................... 1

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72” DECK GROUP

Item Part No. Description Qty.

Item Part No. Description Qty.

1 109-9014 Asm, Deck W /Decals 724 ..................... 1

2 98-5975 Washer, Spring Disc 3/8 ....................... 1

3 116-0133 Extension-Spring .................................. 1

4 109-9851 Axle, Anti-Scalp Roller .......................... 4

5 103-6404 Blade, Notched .................................... 3

O

103-6389 Blade, Low Lift ...................................... 3

103-6384 Blade, Solid .......................................... 3

103-6399 Blade, Extreme ..................................... 3

6 1-603299 Roller-Scalp, Anti .................................. 4

7 109-2796 Pulley, Idler 6" ...................................... 1

8 109-2872 Spacer-Pulley ....................................... 2

9 109-2883 Asm, Deck Idler .................................... 1

10 109-6658 Nut, Nyloc 3/8-16 Flg ............................ 37

11 116-0094 Cover-Belt, RH ..................................... 1

12 109-6938 Cover-Belt, LH ...................................... 1

Exmark red touch up paint (spray paint – P/N 1-850337 - .6 oz liquid bottle – P/N 103-9140).
O Requires installation of Micro-Mulch accessory for proper mulching. Mulch kit P/N MK724
.

103-6394 Blade, Mulching .................................... 3

13 109-6982 Wireform, Cover ................................... 2

14 109-7188 Asm, Discharge Chute ......................... 1

14:1 109-2738 Chute, Discharge ................................. 1

14:2 109-8675-01 Bracket, Discharge Chute .................... 1

14:3 3231-22 Bolt, Carriage 3/8-16 x 1....................... 3

14:4 109-6658 Nut, Nyloc 3/8-16 Flg............................ 3

15 109-0996 Pulley, Idler 8"Flat ................................ 1

16 109-9023 Belt, V-5V ............................................. 1

17 109-9695-01 Baffle, Discharge 724 ........................... 1

18 3211-46 Screw, HH 3/8-24 x 2 Gr8 .................... 4

19 3231-22 Bolt, Carriage 3/8-16 x 1....................... 2

20 3231-28 Bolt, Carriage 3/8-16 x 1 1/4 ................. 2

21 3231-44 Bolt, Carriage 3/8-16 x 2 1/2 ................. 2

22 103-7263 Kit, Antiscalp Roller .............................. 4

23 116-0911 Kit, Cutter Housing 72 .......................... 1

24 109-9648 Asm, Deck Complete ........................... 1

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72” DECK W/DECALS ASSEMBLY – 109-9014

Item Part No. Description Qty.

Item Part No. Description Qty.

2 1-303508 Decal-Warning, Discharge ..................... 1

3 1-403005 Decal-Danger ......................................... 2

4 1-633922 Decal, Antiscalp ..................................... 1

5 98-5954 Decal-Cover, Missing ............................. 2

-13-

6 109-3148 Decal, Bolt Torque ................................. 1

7 109-9361 Decal, Belt Routing ................................ 1

8 116-0944 Decal, Ultracut 72 Series 4 .................... 1