Exmark Quest 4500-451 User manual

For Serial Nos.
790,000 & Higher
Part No. 4500-451 Rev. B
QUEST®

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READ OPERATOR’S MANUAL BEFORE
OPERATING OR SERVICING EXMARK EQUIPMENT
TABLE OF CONTENTS
Description Page
Cutter Housing Assembly ................................................9
42” Deck Group............................................................3-4
48” Deck Group............................................................5-6
52” Deck Group............................................................7-8
Decal Group ..................................................................20
Electrical Diagram..........................................................22
Electrical Group.............................................................21
Electrical Logic Schematic.............................................23
Engine Group ................................................................17
Frame Group............................................................10-11
Fuel Group.....................................................................16
Motion Control Group ...............................................12-13
Seat Group...............................................................14-15
Transaxle Assembly ......................................................19
Transaxle Group............................................................18

42” DECK GROUP
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Item Part No. Description Qty.
1 109-9971 Asm, Deck W/ Decals ............................1
2 1-413113 Bushing-Idler..........................................1
3 109-6388 Kit, Anti-Scalp Roller..............................2
3:1 112-3977 Bolt, Shoulder ........................................1
3:2 1-603299 Roller-Scalp, Anti...................................1
3:3 104-8301 Nut, Nyloc 3/8-16 Flg .............................1
4 103-3330 Spring, Extension...................................1
5 104-8300 Nut, Nyloc 5/16-18 Flg ...........................5
6 108-1479 Spacer ...................................................1
7 108-6645 Belt-V.....................................................1
8 109-0977 Pulley, Idler 5"........................................2
9 109-3410 Hanger, Deck.........................................2
10 109-5151 Deflector, Discharge...............................1
Item Part No. Description Qty.
11 109-5498-03 Baffle, Discharge ...................................1
12 109-6393 Washout Port Kit....................................1
12:1 95-2747 Fitting-Washout......................................1
12:2 46-6290 O-Ring...................................................1
12:3 93-6083 Screw, HWH 1/2-20 x 1/2 Taptite...........2
12:4 95-3270 Connector-Hose.....................................1
13 109-6572 Bushing-Idler .........................................1
14 104-8301 Nut, Nyloc 3/8-16 Flg.............................8
15 109-6886 Spring-Torsion.......................................1
16 109-8744 Complete Cutter Housing Asm...............2
17 109-8788 Bushing-Flanged....................................6
18 109-8854 Pin-Chute...............................................1
Exmark black touch up spray paint – gloss black.
Exmark red touch up paint (spray paint - P/N 1-850337 - .6 oz liquid bottle - P/N 103-9140).
VIncludes all item shown on pages 3, 4 & 7. Does not include struts or strut hardware.

42” DECK GROUP (cont.)
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Item Part No. Description Qty.
19 109-9982 Blade, High Lift Notched.........................2
20 109-9993 Spacer, Deck Sheave ............................2
21 109-9996-03 Arm, Idler...............................................1
22 110-6864 Pulley.....................................................2
24 114-0463 Washer-Friction, Composite...................2
25 115-2455 Spacer ...................................................2
26 322-7 Screw, HH 5/16-18 x 1 1/2.....................1
28 109-6868 Bolt, Carriage 3/8-16 x 3........................1
29 3231-25 Bolt, Carriage 3/8-16 x 1 1/4 ..................6
30 3231-31 Bolt, Carriage 3/8-16 x 2 1/2 ..................1
Item Part No. Description Qty.
32 109-6459 Decal-Warning, Belt Shield....................2
33 110-6691 Decal-Danger ........................................2
34 109-6036 Decal-Roller, Anti-Scalp.........................1
35 116-0533 Decal, Blade Torque..............................1
37 93-7009 Decal-Danger, Deflector ........................1
40 3230-23 Bolt, Carriage 5/16-18 x 3/4, short neck 4
41 116-1557-03 Weight...................................................1
42 32144-41 Screw, HWH 3/8-16 x 7/8 Taptite...........2
V109-9970 Asm, 42 Deck Complete
Exmark black touch up spray paint – gloss black.
VIncludes all item shown on pages 3, 4 & 9. Does not include struts or strut hardware.

48” DECK GROUP
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Item Part No. Description Qty.
1 109-6253 Asm, Deck W/Decals (Red)....................1
116-0544 Asm, Deck W/Decals (Black)..................1
2 52-2860 Washer ..................................................2
3 109-9158 Asm, Idler Arm W/Bearings....................1
3:1 302-40 Zerk, 90° 1/4-28.....................................1
3:2 1-513034 Bearing ..................................................2
4 103-3330 Spring, Extension...................................1
5 1-603384 Bushing..................................................1
6 3231-11 Bolt, Carriage 3/8-16 x 3 1/2 ..................1
7 104-8301 Nut, Nyloc 3/8-16 Flg .............................8
8 1-413113 Bushing..................................................1
9 109-8891 Asm, Pulley and Bearing........................2
10 3231-31 Bolt, Carriage 3/8-16 x 2 1/2 ..................1
11 109-6572 Bushing..................................................2
12 1-603843 Pulley, Idler............................................1
13 109-6868 Bolt, Carriage 3/8-16 x 3........................2
14 109-3723-01 Strut, Deck (Red) ...................................1
109-3723-03 Strut, Deck (Black).................................1
15 109-8788 Bushing, Flanged...................................4
Item Part No. Description Qty.
16 3231-25 Bolt, Carriage 3/8-16 x 1 1/4..................4
17 109-3449 Shield, Belt ............................................2
18 3230-23 Bolt, Carriage 5/16-18 x 3/4 Short Neck.6
19 109-5667 Ring, Bolt Retaining...............................4
20 104-8300 Nut, Nyloc 5/16-18 Flg...........................10
21 109-5498-03 Baffle, Discharge ...................................1
22 110-6691 Decal, Danger........................................2
23 109-6459 Decal, Belt Shield Warning ....................2
24 109-6034 Decal, Deck 48......................................1
25 109-6035 Decal, Belt Routing................................1
26 109-6036 Decal, Anti-Scalp Roller.........................1
27 93-7009 Decal, Danger........................................1
28 322-2 Screw, HH 5/16-18 x 5/8........................4
29 109-9159 Decal, Hole Cover..................................3
30 1-303520 Decal, Trivantage...................................1
31 116-0533 Decal, Blade Torque..............................1
V109-8745 Asm, 48 Deck Complete (Red)
V116-0545 Asm, 48 Deck Complete (Black)
Exmark black touch up spray paint – gloss black.
Exmark red touch up paint (spray paint - P/N 1-850337 - .6 oz liquid bottle - P/N 103-9140).
VIncludes all item shown on pages 5, 6 & 9. Does not include struts or strut hardware.

48” DECK GROUP (cont.)
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Item Part No. Description Qty.
1 109-6388 Kit, Anti-Scalp Roller..............................3
1:1 112-3977 Bolt, Shoulder ........................................1
1:2 1-603299 Roller, Anti-Scalp...................................1
1:3 104-8301 Nut, Nyloc 3/8-16 Flg .............................1
2 109-8744 Asm, Cutter Housing Complete..............3
3 103-6401 Blade, Notched ......................................3
Q109-6389 Blade. Mulch..........................................3
109-6391 Blade, High Lift.......................................3
4109-3747 Sheave, Blade Drive ..............................3
5 109-3410 Hanger, Deck.........................................4
6 109-8788 Bushing, Flanged...................................8
Item Part No. Description Qty.
7 3231-25 Bolt, Carriage 3/8-16 x 1 1/4..................8
8 104-8301 Nut, Nyloc 3/8-16 Flg.............................8
9 109-5364 Belt........................................................1
10 109-6393 Kit, Washout Port...................................1
10:1 95-2747 Fitting, Washout Port .............................1
10:2 46-6290 O-Ring...................................................1
10:3 93-6083 Screw, HWH 1/2-20 x 1/2 Taptite...........2
10:4 95-3270 Connector, Hose....................................1
13 109-8854 Pin, Chute..............................................1
14 109-6886 Spring....................................................1
15 109-5151 Chute, Deflector.....................................1
Exmark red touch up paint (spray paint - P/N 1-850337 - .6 oz liquid bottle - P/N 103-9140).
Apply Mobil HTS grease (P/N 103-5217 1.5 oz packet) (or a food-grade anti-seize) between the spindles & sheaves.
DO NOT use a copper or nickel based anti-seize.
QRequires installation of Micro-Mulch accessory for proper mulching. Mulch kit P/N 109-5980.

52” DECK GROUP
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Item Part No. Description Qty.
1 109-6254 Asm,52 Deck W/ Decals (Red)...............1
116-0555 Asm,52 Deck W/ Decals (Black).............1
2 52-2860 Washer ..................................................2
3 109-9158 Asm, Idler Arm W/Bearings....................1
3:1 302-40 Zerk, 90° 1/4-28.....................................1
3:2 1-513034 Bearing ..................................................2
4 103-3330 Spring, Extension...................................1
5 1-603384 Bushing..................................................1
6 3231-11 Bolt, Carriage 3/8-16 x 3 1/2 ..................1
7 104-8301 Nut, Nyloc 3/8-16 Flg .............................8
8 1-413113 Bushing..................................................1
9 109-8891 Asm, Sheave and Bearing......................2
10 3231-31 Bolt, Carriage 3/8-16 x 2 1/2 ..................1
11 109-6572 Bushing..................................................2
12 1-603843 Pulley, Idler............................................1
13 109-6868 Bolt, Carriage 3/8-16 x 3........................2
14 109-3723-01 Strut, Deck (Red) ...................................1
109-3723-03 Strut, Deck (Black).................................1
15 109-8788 Bushing, Flanged...................................4
Item Part No. Description Qty.
16 3231-25 Bolt, Carriage 3/8-16 x 1 1/4..................4
17 109-3449 Shield, Belt ............................................2
18 3230-23 Bolt, Carriage 5/16-18 x 3/4 Short Neck.6
19 109-5667 Ring, Bolt Retaining...............................4
20 104-8300 Nut, Nyloc 5/16-18 Flg...........................12
21 109-5498-03 Baffle, Discharge ...................................1
22 110-6691 Decal, Danger........................................2
23 109-6459 Decal, Belt Shield Warning ....................2
24 109-6033 Decal, Deck 52......................................1
25 109-6035 Decal, Belt Routing................................1
26 109-6036 Decal, Anti-Scalp Roller.........................1
27 93-7009 Decal, Danger........................................1
28 322-2 Screw, HH 5/16-18 x 5/8........................6
29 109-9159 Decal, Hole Cover..................................3
30 1-303520 Decal, Trivantage...................................1
31 116-0533 Decal, Blade Torque..............................1
V109-8746 Asm,52 Deck Complete (Red)
V116-0556 Asm,52 Deck Complete (Black)
Exmark black touch up spray paint – gloss black.
Exmark red touch up paint (spray paint - P/N 1-850337 - .6 oz liquid bottle - P/N 103-9140).
VIncludes all item shown on pages 7, 8 & 9. Does not include struts or strut hardware.

52” DECK GROUP (cont.)
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Item Part No. Description Qty.
1 109-6388 Kit, Anti-Scalp Roller..............................3
1:1 112-3977 Bolt, Shoulder........................................1
1:2 1-603299 Roller, Anti-Scalp...................................1
1:3 104-8301 Nut, Nyloc 3/8-16 Flg .............................1
2 109-8744 Asm, Cutter Housing Complete..............3
3 103-6402 Blade, Notched 18.0 ..............................3
Q109-6390 Blade. Mulch..........................................3
109-6392 Blade, High Lift ......................................3
4109-3671 Sheave, Blade Drive ..............................3
5 109-3410 Hanger, Deck.........................................4
6 109-8788 Bushing, Flanged...................................8
Item Part No. Description Qty.
7 3231-25 Bolt, Carriage 3/8-16 x 1 1/4..................8
8 104-8301 Nut, Nyloc 3/8-16 Flg.............................8
9 109-3661 Belt........................................................1
10 109-6393 Kit, Washout Port...................................1
10:1 95-2747 Fitting, Washout Port .............................1
10:2 46-6290 O-Ring...................................................1
10:3 93-6083 Screw, HWH 1/2-20 x 1/2 Taptite...........2
10:4 95-3270 Connector, Hose....................................1
13 109-8854 Pin, Chute..............................................1
14 109-6886 Spring....................................................1
15 109-5151 Chute, Deflector.....................................1
Exmark red touch up paint (spray paint - P/N 1-850337 - .6 oz liquid bottle - P/N 103-9140).
Apply Mobil HTS grease (P/N 103-5217 1.5 oz packet) (or a food-grade anti-seize) between the spindles & sheaves. DO NOT
use a copper or nickel based anti-seize.
QRequires installation of Micro-Mulch accessory for proper mulching. Mulch kit P/N 109-5982.

CUTTER HOUSING ASSEMBLY
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Item Part No. Description Qty.
1 109-9380 Asm, Cutter Housing..............................1
1:1 62-3661 Spacer, Bearing.....................................1
1:2109-9379 Bearing, Ball ..........................................2
2 80-4380 Spacer...................................................1
3 80-4360 Shield, Bearing ......................................1
Item Part No. Description Qty.
4 109-7431 Spindle, Hex Pilot ..................................1
5 109-7429 Washer, Blade Drive..............................1
6 116-0005 Bolt, Sems Blade...................................1
7 3219-6 Nut, Hex 5/8-18......................................1
8 32144-41 Screw, HWH 3/8-16 x 7/8 Taptite...........6
Apply Mobil HTS grease (P/N 103-5217 1.5 oz packet) (or a food-grade anti-seize) between the spindle & bearings. DO NOT
use a copper or nickel based anti-seize.