Exmark Lawn Mower 4500 420 User Guide

ULTRA VAC® QDS

LAZER Z® HP MODELS

For Ultra Vac Serial Nos.

790,000 & Higher

Part No. 4500-420 Rev. A

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Introduction

CONGRATULATIONS on the purchase of your

Exmark Ultra Vac QDS. This product has been

carefully designed and manufactured to give you

a maximum amount of dependability and years of

trouble-free operation.

This manual contains operating, maintenance,

adjustment, and safety instructions for your Exmark

Ultra Vac QDS.

BEFORE OPERATING YOUR MOWER,

CAREFULLY READ THIS MANUAL IN ITS

ENTIRETY.

Figure 1

1. Model and serial number location

By following the operating, maintenance, and safety

instructions, you will prolong the life of your Ultra

Vac QDS, maintain its maximum efﬁciency, and

promote safe operation.

Model No.

Serial No.

If additional information is needed, or should you

require trained mechanic service, contact your

authorized Exmark equipment dealer or distributor.

All Exmark equipment dealers and distributors are

kept informed of the latest methods of servicing

and are equipped to provide prompt and efﬁcient

service in the ﬁeld or at their service stations. They

carry ample stock of service parts or can secure them

promptly for you from the factory.

All Exmark parts are thoroughly tested and inspected

before leaving the factory, however, attention is

required on your part if you are to obtain the fullest

measure of satisfaction and performance.

Whenever you need service, genuine Exmark parts,

or additional information, contact an Authorized

Service Dealer or Exmark Customer Service and have

the model and serial numbers of your product ready.

Figure 1 identiﬁes the location of the model and serial

numbers on the product. Write the numbers in the

space provided.

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Contents

Introduction ........................................................... 3

Safety ..................................................................... 5

Safety Alert Symbo l......................................... 5

Safe Operating Practice s.................................. 5

Safety and Instructional Decals ....................... 8

Speciﬁcations ....................................................... 10

Model Numbers............................................ 10

Systems......................................................... 10

Dimensions................................................... 10

Torque Requirements .................................... 10

Product Overview ................................................ 11

Operation ............................................................. 11

Pre-Start........................................................ 11

Operating Instructions .................................. 11

Transporting ................................................. 14

Maintenance ......................................................... 16

Recommended Maintenance Schedule(s) ........... 16

Periodic Maintenance ....................................... 16

Check Blower Housing/Impeller................... 16

Check Door Cloth Mesh................................ 16

Lubricate Grease Fittings............................... 17

Check Condition of Belt ................................ 17

Adjustments ..................................................... 18

Cleaning ........................................................... 19

Clean Mufﬂer and Rear Frame Area................ 19

Clean Rear Screen In Hood............................ 19

Clean Blowe r................................................. 19

Troubleshooting ................................................... 20

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Safety

• Never let children or untrained people operate

Safety

Safety Alert Symbol

This Safety Alert Symbol (Figure 2) is used both in

this manual and on the machine to identify important

safety messages which must be followed to avoid

accidents

or service the equipment. Local regulations may

restrict the age of the operator.

• The owner/user can prevent and is responsible

for accidents or injuries occurring to himself or

herself, other people or property.

Preparation

This symbol means: ATTENTION! BECOME

ALERT! YOUR SAFETY IS INVOLVED!

• Evaluate the terrain to determine what accessories

and attachments are needed to properly and safely

perform the job. Only use on machines approved

by Exmark.

• Wear appropriate clothing including safety glasses,

substantial footwear, long trousers, and hearing

protection. Do Not operate when barefoot or

when wearing open sandals.

Figure 2

1. Safety alert symbol

The safety alert symbol appears above information

which alerts you to unsafe actions or situations

and will be followed by the word DANGER,

WARNING, or CAUTION.

CAUTION

This machine produces sound levels in

excess of 85 dBA at the operator’s ear and

can cause hearing loss through extended

periods of exposure.

DANGER: White lettering / Red background.

Indicates an imminently hazardous situation which, if

not avoided, Will result in death or serious injury.

Wear hearing protection when operating this

machine.

WARNING: Black lettering / Orange background.

Indicates a potentially hazardous situation which, if

not avoided, Could result in death or serious injury.

• Inspect the area where the equipment is to be

used and remove all rocks, toys, sticks, wires,

bones, and other foreign objects which can be

thrown by the machine and may cause personal

injury to the operator or bystanders.

CAUTION: Black lettering / Yellow background.

Indicates a potentially hazardous situation which, if

not avoided, May result in minor or moderate injury.

This manual uses two other words to highlight

information. Important calls attention to special

mechanical information and Note emphasizes

general information worthy of special attention.

Operation

• Operate only in daylight or good artiﬁcial light,

keeping away from holes and hidden hazards.

Safe Operating Practices

• Never mow with the discharge deﬂector raised,

removed or altered unless there is a grass

collection system or mulch kit in place and

working properly.

Training

• Read the tractor and Ultra Vac QDS Operator’s

Manuals and other training material. If the

operator(s) or mechanic(s) can not read English

it is the owner’s responsibility to explain this

material to them.

• Become familiar with the safe operation of the

equipment, operator controls, and safety signs.

• All operators and mechanics should be trained.

The owner is responsible for training the users.

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Safety

Slope Operation

DANGER

Use Extreme caution when mowing and/or turning

on slopes as loss of traction and/or tip-over could

occur. The operator is responsible for safe operation

on slopes.

There are rotating blades in the blower and

under the mower deck. Blade contact can

cause serious operator or bystander injury

or even death.

• Do Not reach into blower unless rotation

indicator has stopped. Disengage PTO,

stop engine, remove key, wait for all

moving parts to stop. Engage parking

brake.

DANGER

Operating on wet grass or steep slopes can

cause sliding and loss of control. Wheels

dropping over edges, ditches, steep banks, or

water can cause rollovers, which may result

in serious injury, death or drowning.

• Never operate mower unless discharge

deﬂector, entire grass collection system,

or mulch kit is installed.

• Do Not mow slopes when grass is wet.

• Do Not mow near drop-offs or near water.

• Stop engine, wait for all moving parts to stop,

remove key and engage parking brake:

• Do Not mow slopes greater than 15

degrees.

– Before checking, cleaning or working on the

mower.

• Reduce speed and use extreme caution

on slopes.

– After striking a foreign object or abnormal

vibration occurs (inspect the mower for

damage and make repairs before restarting

and operating the mower).

• Avoid sudden turns or rapid speed

changes.

• Keep the roll bar in the raised and locked

position and use seat belt.

– Before clearing blockages.

– Whenever you leave the mower.

• See inside the back cover to determine the

approximate slope angle of the area to be mowed.

WARNING

• Use a walk behind mower and/or a hand trimmer

near drop-offs, ditches, steep banks or water.

(Figure 3).

Hands, feet, hair, clothing, or accessories can

become entangled in rotating parts. Contact

with the rotating parts can cause traumatic

amputation or severe lacerations.

• Do Not operate the machine without

guards, shields, and safety devices in

place and working properly.

• Keep hands, feet, hair, jewelry, or clothing

away from rotating parts.

• Stop the blades, slow down, and use caution when

crossing surfaces other than grass and when

transporting the mower to and from the area to

be mowed.

• Be aware of the mower discharge path and direct

discharge away from others.

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Safety

Use progressively greater care on slopes as the

hopper ﬁlls.

Maintenance and Storage

• Disengage drives, set parking brake, stop engine

and remove key or disconnect spark plug wire.

Wait for all movement to stop before adjusting,

cleaning or repairing.

• Use care when checking blades. Wrap the blade(s)

or wear gloves, and use caution when servicing

them. Only replace damaged blades. Never

straighten or weld them.

• Keep all guards, shields and all safety devices in

place and in safe working condition.

Figure 3

1. Safe Zone-Use the mower here on slopes less than 15

degrees

2. Danger Zone-Use a walk behind mower and/or hand

trimmer on slopes greater than 15 degrees, near

drop-offs and water.

• Check all bolts frequently to maintain proper

tightness.

• Frequently check for worn or deteriorating

components that could create a hazard.

3. Water

• All replacement parts must be the same as

or equivalent to the parts supplied as original

equipment.

• Remove or mark obstacles such as rocks, tree

limbs, etc. from the mowing area. Tall grass can

hide obstacles.

• Watch for ditches, holes, rocks, dips and rises that

change the operating angle, as rough terrain could

overturn the machine.

• Avoid sudden starts when mowing uphill because

the mower may tip backwards.

• Be aware that operating on wet grass, across steep

slopes or downhill may cause the mower to lose

traction. Loss of traction to the drive wheels may

result in sliding and a loss of braking and steering.

• Always avoid sudden starting or stopping on a

slope. If tires lose traction, disengage the blades

and proceed slowly off the slope.

• Follow the manufacturer’s recommendations for

counter weights to improve stability. Always

install and remove the Ultra Vac QDS, including

counter weights, as instructed. Failure to do so

will cause a reduction in stability or traction. Do

Not operate the mower with only a portion of the

Ultra Vac QDS installed.

• Use extreme care with grass catchers or

attachments. These can change the stability of the

machine and cause loss of control. The stability

and traction of the machine will change as the

Ultra Vac QDS hopper ﬁlls with grass clippings.

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Safety

Safety and Instructional Decals

• Keep all safety signs legible. Remove all grease,

dirt and debris from safety signs and instructional

labels.

• New safety signs may be obtained from

your authorized Exmark equipment dealer or

distributor or from Exmark Mfg. Co. Inc.

• Replace all worn, damaged, or missing safety

signs.

• Safety signs may be afﬁxed by peeling off the

backing to expose the adhesive surface. Apply

only to a clean, dry surface. Smooth to remove

any air bubbles.

• When replacement components are installed, be

sure that current safety signs are afﬁxed to the

replaced components.

• Familiarize yourself with the following safety signs

and instruction labels. They are critical to the safe

operation of your Exmark commercial mower.

• If an attachment or accessory has been installed,

make sure current safety signs are visible.

103-6605

For Units with a Two-Post ROPS Only

1-653554

1-653558

98-5954

103-6604

For Units with a Two-Post ROPS Only

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Safety

103-3508

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Speciﬁcations

Model Numbers

Serial Nos: 790,000 and Higher

LHPUVD4448; LHPUVD4650; LHPUVD5256

w/Ultra Vac QDS

Systems

52 inch Deck

56 inch Deck

95.00 inches (241.3 cm)

99.86 inches (253.6 cm)

Bagging System

• Collection Hopper:

Curb Weight:

– Commercial grade, steel and polyethylene

hopper with rear discharge door, commercial

grade cloth mesh door panel.

Lazer Z HP -220 lb (100 kg), including the front

weight.

– Capacity: 6.7 bushels

• Dump Mechanism: Single motion actuation from

operator’s seat.

Torque Requirements

Bolt Location

Torque

• Blower Tube: Fixed, abrasion resistant molded

polyethylene.

Impeller Spindle Bottom 55-60 ft-lb (75-81 N-m)

Nut

• Impeller: 5–bladed, 1/4 inch (6.4 mm) thick

abrasion resistant steel, with vertical axis.

Impeller Spindle Top Nut 75-80 ft-lb (102-108 N-m)

• Impeller bearings: 1 inch (2.5 cm) sealed

non-greaseable bearings.

Dimensions

Overall Width:

w/Ultra Vac QDS

44 inch Deck

46 inch Deck

48 inch Deck

50 inch Deck

52 inch Deck

56 inch Deck

58.47 inches (148.5 cm)

60.67 inches (154.1 cm)

61.73 inches (159.8 cm)

64.66 inches (164.2 cm)

66.47 inches (168.8 cm)

70.85 inches (180.0 cm)

Overall Length:

w/Ultra Vac QDS

44 inch Deck

46 inch Deck

48 inch Deck

50 inch Deck

93.76 inches (283.2 cm)

96.69 inches (245.6 cm)

93.76 inches (283.2 cm)

97.12 inches (246.7 cm)

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Operation

Product Overview

Operation

Note: Determine the left and right sides of the

machine from the normal operating position.

Pre-Start

Make sure you understand the controls, their

locations, their functions, and their safety

requirements.

Ensure the blower, door mesh, tube and hopper are

in good condition, properly attached, and latched.

For units above Serial Number 600,000 with Triton

decks: Make sure that the adjustable dog leg bafﬂe is

closed to match the intake into the Ultra Vac Blower.

Figure 4

1. Hood

2. Weight

4. Tube

5. Door

3. Blower

WARNING

If the deck discharge opening and the blower

intake opening do not match correctly, it

will allow objects to be thrown in operator’s

or bystander’s direction. Also, contact with

blade could occur. Thrown objects or blade

contact can cause serious injury or kill you

or bystanders.

Adjust dog leg bafﬂe to match intake

opening.

Refer to the Maintenance section and perform all the

necessary inspection and maintenance steps.

Operating Instructions

Mowing

1. The Ultra Vac QDS blower operates when deck

drive is engaged. Be sure that all persons are clear

of the mower deck before engaging the cutting

blades. Set the throttle to “midway” position. Pull

outward on the PTO switch to the “ROTATE”

position. Accelerate to full throttle to begin

mowing.

2. To disengage the PTO and blower, set the

throttle to “midway” position. Push in on the

PTO switch to the “STOP” position to stop the

cutting blades and blower. The cutting blades will

require a slightly longer amount of time to come

to a complete stop when the blower is installed

on the deck. Verify that all rotation indicators

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Operation

have stopped before clearing blower assembly or

mower deck

3. To empty the hopper, ﬁrst shut off deck drive.

Lift up on the handle to open the door and

empty the hopper. If the unit is to be driven

onto a truck or trailer with the hopper full,

always back the unit up the ramp. This will

reduce the chance of rearward tip up. See the

Transporting section for additional information

regarding loading a unit on a truck or trailer.

4. Close and latch the door before continuing

mowing. Do Not engage the cutting blades while

the door is in the open position.

Figure 5

4. Hairpin

5. Clevis Pin

Tips for mowing conditions:

1. Hopper Assembly

2. Tube

3. Blower

• When mowing in areas with sandy soil, use

low lift blades on the cutting deck and higher

cutting heights to minimize wear on the blower

components.

3. Remove the belt cover by loosening the knobs.

• When mowing in wet conditions, such as just after

a rain or in heavy dew, use low lift blades on the

cutting deck to minimize plugging of the blower.

CAUTION

• Maintaining a ground speed that does not pull

down the engine RPM will allow for the highest

productivity and best quality of cut. Bogging the

engine RPM down by going too fast will cause

plugging and quality of cut issues.

The deck sheave will become very hot.

Touching a hot deck sheave can cause severe

burns.

Allow the deck sheave to cool completely

before removing the belt.

• When the hopper gets full, the sound of the

blower will change and there will be slight

blowout from the front right corner of the deck.

Emptying the hopper at this point will minimize

the potential for the tube to plug.

• For units below Serial Number 600,000:

Anti-blowout kits are available for leaf collection.

They help to prevent “chasing” the leaves. To

reduce “plowing” leaves, raise the deck slightly.

• On Triton: Raise front adjustable bafﬂe to

reduce plowing. Lowering front adjustable bafﬂe

may prevent “chasing”. Match discharge opening

to Ultra Vac intake for best performance.

Figure 6

1. Hairpin

2. Chute pivot pin

3. Discharge chute

4. Belt shield

5. Weight

6. Knob

Bagger Removal for Side Discharge

1. Shut off the deck drive, stop engine and wait for

all moving parts to stop. Remove key.

4. Pull the idler release handle and remove the belt

from the upper groove of the deck sheave.

2. Remove the discharge tube by releasing the latch

at the blower. Slide the tube off the blower outlet

and remove the upper end from the hopper.

5. Unlatch the front end of the blower. Pivot the

blower back and lift it off the deck.

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Operation

6. Install the discharge chute using the chute pivot

pin and hairpin (see Figure 7).

operate the mower with only a portion of the

Ultra Vac installed.

WARNING

Caster or front ﬂoor pan weights installed

without bagger may cause loss of traction

and steering control. Loss of control can

result in an accident, which may cause death,

injury, or property damage.

Install caster or front ﬂoor pan weights

ONLY when bagger is installed.

Figure 7

11. The machine can now be used for side discharge

mowing.

Viewed from the right side

1. Hairpin

3. Discharge chute

2. Chute pivot pin

Bagger Installation for Bagging

1. Stop engine, remove key, and wait for all moving

parts to stop.

Note: Install chute with the tabs to the rear of

the deck tabs as shown.

2. Remove hairpin and chute pivot pin. Remove

discharge chute. Pivot pin and hair pin may be

stored in the pivot holes of the discharge chute

during bagging operation.

WARNING

An uncovered discharge opening will

allow objects to be thrown in operator’s or

bystander’s direction. Also, contact with

blade could occur. Thrown objects or blade

contact can cause serious injury or kill you

or bystanders.

3. Slide tube ends of hopper assembly into the tubes

of the mount weldment (see Figure 5). Install two

clevis pins through holes in tubes. Retain with

two hair pins.

4. Remove the belt cover on the right side of the

deck (see Figure 6). Install the blower by inserting

the mounting pin into the tube welded to the rear

corner of the deck. Pivot the blower until the

front pin engages the slot in the deck. Adjust the

position of the front pin if necessary to engage

the slot. Use the latch to lock the blower in this

position.

Never operate mower unless discharge

deﬂector, or entire grass collection system, or

mulch kit is installed.

7. Re-install the plastic belt cover and tighten the

knobs.

8. Remove the hair pins and clevis pins holding the

hopper assembly to the mount weldment.

5. Pull the idler release handle and install the belt in

the upper groove of the deck sheave.

9. Lift the hopper assembly off the mount.

6. Install the belt cover using the two knobs.

10. Remove the hairpins and lift the front weights off

of the mount plate.

7. Install the discharge tube assembly by slipping the

upper end into the hood, then sliding the lower

end over the blower discharge opening. Use the

latches to retain the lower end to the blower.

Note: The removable weights are heavy. Use

care when lifting them. Make sure that you can

hold them securely before lifting them. Use

caution when positioning your hands so that you

Do Not set them down on your hands or ﬁngers.

8. For Units Serial Number 600,000 and Higher

with Triton Decks: Adjust position of dog leg

bafﬂe to match the intake of the Ultra Vac blower

bafﬂe adjusted too wide may allow objects to be

thrown from under deck. Bafﬂe adjusted too

narrow may cause plugging issues.

Note: The portions of the Ultra Vac bagger that

are not bolted to the mower are designed to be

installed or removed in their entirety. Do Not

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Operation

Transporting

WARNING

Loading a unit on a trailer or truck increases

the possibility of backward tip-over.

Backward tip-over could cause serious injury

or death.

Transporting a Unit

Use a heavy-duty trailer or truck to transport the

machine. Lock brake and block wheels. Securely

fasten the machine to the trailer or truck with straps,

chains, cable, or ropes. Be sure that the trailer or truck

has all necessary lighting and marking as required by

law. Secure a trailer with a safety chain.

• Use extreme caution when operating a

unit on a ramp.

• Use only a single, full width ramp; Do

Not use individual ramps for each side

of the unit.

CAUTION

This unit does not have proper turn

• If individual ramps must be used, use

enough ramps to create an unbroken

ramp surface wider than the unit.

signals, lights, reﬂective markings, or a

slow moving vehicle emblem. Driving on a

street or roadway without such equipment

is dangerous and can lead to accidents

causing personal injury. Driving on a street

or roadway without such equipment may also

be a violation of State laws and the operator

may be subject to trafﬁc tickets and/or ﬁnes.

• Do Not exceed a 15° angle between ramp

and ground or between ramp and trailer

or truck.

• Avoid sudden acceleration while driving

unit up a ramp to avoid tipping backward.

• Avoid sudden deceleration while backing

unit down a ramp to avoid tipping

backward.

Do Not drive a unit on a public street or

roadway.

Loading a Unit

If the unit is to be driven onto a truck or trailer

with the hopper full, always back the unit up the

ramp. This will reduce the chance of rearward

tip up.

Dump contents of hopper before transport Do Not

transport the unit with the hopper full.

Use extreme caution when loading units on trailers or

trucks. One full width ramp that is wide enough to

extend beyond the rear tires is recommended instead

of individual ramps for each side of the unit. The

lower rear section of the tractor frame extends back

between the rear wheels and serves as a stop for

tipping backward. Having a full width ramp provides

a surface for the frame members to contact if the

unit starts to tip backward. If it is not possible to use

one full width ramp, use enough individual ramps to

simulate a full width continuous ramp.

Ramp should be long enough so that the angles

between the ramp and the ground and the ramp and

the trailer or truck Do Not exceed 15°. A steeper

angle may cause mower deck components to get

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Operation

caught as the unit moves from ramp to trailer or

truck. Steeper angles may also cause the unit to tip

backward. If loading on or near a slope, position

the trailer or truck so it is on the down side of the

slope and the ramp extends up the slope. This will

minimize the ramp angle. The trailer or truck should

be as level as possible.

Important: Do Not attempt to turn the unit

while on the ramp, you may lose control and

drive off the side.

Avoid sudden acceleration when driving up a ramp

and sudden deceleration when backing down a ramp.

Both maneuvers can cause the unit to tip backward.

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Maintenance

Note: Determine the left and right sides of the machine from the normal operating position.

WARNING

While maintenance or adjustments are being

made, someone could start the engine.

Accidental starting of the engine could

seriously injure you or other bystanders.

The engine can become very hot. Touching

a hot engine can cause severe burns.

Allow the engine to cool completely before

service or making repairs around the engine

area.

Remove the key from the ignition switch,

engage parking brake, and pull the wire(s)

off the spark plug(s) before you do any

maintenance. Also push the wire(s) aside

so it does not accidentally contact the spark

plug(s).

Recommended Maintenance Schedule(s)

Maintenance Service

Maintenance Procedure

Interval

• Check the blower housing/impeller.

• Check door cloth mesh.

• Clean mufﬂer and rear frame area.

Before each use or daily

• Clean rear screen in the hood.

• Lubricate grease ﬁttings.

• Check condition of belt.

• Clean blower.

Every 25 hours

Every 50 hours

Yearly or before storage

Periodic Maintenance

Check Door Cloth Mesh

Service Interval: Before each use or daily

Check Blower

Housing/Impeller

1. Stop engine, wait for all moving parts to stop, and

remove key. Engage parking brake.

2. Inspect the bags for wear, tears, or damage.

Service Interval: Before each use or daily

1. Stop engine, wait for all moving parts to stop, and

remove key. Engage parking brake.

WARNING

Under normal use the cloth mesh will

deteriorate and wear. Objects could exit

through worn cloth mesh at high speeds.

Thrown objects can cause serious injury or

kill you or bystanders.

2. Inspect for wear or damage daily. Replace or

repair worn parts as needed

Note: When mowing in areas with sandy soil,

use low lift blades on the cutting deck and higher

cutting heights to minimize wear on the blower

components.

Check cloth mesh frequently for tears and

holes. Replace worn cloth mesh.

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Maintenance

3. Inspect the belt for damage or wear. Replace belt

with one of the following:

Lubricate Grease Fittings

Note: See chart for service intervals.

Part No.

1-653332

1-653438

1-653333

103-0866

1-653438

109-9249

Deck

1. Stop engine, wait for all moving parts to stop, and

remove key. Engage parking brake.

44 inch Deck

46 inch Deck

48 inch Deck

50 inch Deck

52 inch Deck

56 inch Deck

2. Lubricate ﬁttings with NGLI grade #2

multi-purpose gun grease.

Refer to the following chart for ﬁtting locations

and lubrication schedule.

Lubrication Chart

A. To replace belt, remove the belt guide on the

blower (Figure 8)

Fitting

Locations

Initial

Pumps

Number of

Places

Service

Interval

1–2

25 Hours

1. Idler

Bushings

Check Condition of Belt

Service Interval: Every 50 hours

1. Stop engine, wait for all moving parts to stop, and

remove key. Engage parking brake.

Figure 8

2. Inspect the belt position on the idler arm.

1. Spring loaded idler

2. Impeller sheave

3. Fixed idler

4. Belt guide

5. Deck sheave

The idler arm may become bent during use or

transport. A bent idler arm could cause the belt

to jump off of the idler and be damaged.

A. Make sure the belt cover is installed and run

the blower for one to two minutes.

B. Install the belt onto the blower assembly as

shown.

B. Shut off the deck drive, stop engine and wait

for all moving parts to stop. Remove key.

Remove the belt cover and check to make sure

that the belt is riding near the center of the

ﬂat idler on the idler arm.

C. Reinstall the belt guide removed previously.

C. If the belt is not riding near the center of the

idler, remove the blower, and bend the idler

arm slightly.

D. Reinstall the blower and belt cover and repeat

steps A through C until the belt is positioned

near the center of the idler.

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Maintenance

Adjustments

Note: The Ultra Vac QDS was adjusted at the

factory to operate properly. However, there are three

basic adjustments that can be made, should your unit

require them:

3. Door opening: After adjusting the hinge links

for door closing, the hinge stops (Figure 10B) can

be adjusted to obtain maximum door opening.

The stop plates should be adjusted so that the

door link contacts them when the upper tube of

the door frame is within 1/4 inch (6.4 mm) ± 1/8

inch (3.2 mm) from the lower lip of the molded

hood. Both left and right stops must make

contact when the door link arm is at this position.

Figure 9

Figure 10

1. Bellcrank arm

2. Upper frame tube

1. 1/4 inch (6.4 mm) ± 1/8 inch (3.2 mm)

3. Maintain same distance on both sides

1. Arm Position: The left and right bellcrank arms

control the timing of the left and right door

opening mechanisms. The ends of these arms

must be positioned equally from the upper frame

tube for proper actuation. Check this distance

with the door closed. If adjustment is necessary,

loosen the allen head clamping screw on the hub

of the right hand arm. Position the arms so that

their ends are the same distance from the upper

frame tube. Tighten the clamping bolt to hold

them in this position (see Figure 9).

2. Door closing: The closing of the door is

controlled by the two hinge links (Figure 10A).

The length of the hinge links can be changed

to provide complete closing of the door and

reasonable force on the handle to latch or unlatch

the door. Lengthen the links to reduce the force.

Shorten the links to increase the force. The left

and right sides must be approximately equal. With

the door closed, both links should be slightly tight

to minimize rattling.

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Maintenance

Cleaning

Clean Mufﬂer and Rear

Frame Area

Service Interval: Before each use or daily

Stop engine, wait for all moving parts to stop, and

remove key. Engage parking brake.

WARNING

Operating engine parts, especially the

mufﬂer, become extremely hot. Severe burns

can occur on contact and debris, such as

leaves, grass, brush, etc. can catch ﬁre.

• Allow engine parts, especially the mufﬂer,

to cool before touching.

• Remove accumulated debris from mufﬂer

and engine area.

• Install and maintain in working order a

spark arrester before using equipment

on forest-covered, grass-covered,

brush-covered unimproved land.

Clean Rear Screen In Hood

Service Interval: Before each use or daily

1. Stop engine, wait for all moving parts to stop, and

remove key. Engage parking brake.

2. Open door and remove clippings that are stuck

to the screen.

Clean Blower

Service Interval: Yearly or before storage

Grass build up may cause problems with the impeller

when the unit is put back into operation.

1. Stop engine, wait for all moving parts to stop, and

remove key. Engage parking brake.

2. Remove grass buildup from around the impeller

before placing it in storage.

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Troubleshooting

Important: It is essential that all operator safety mechanisms be connected and in proper operating

condition prior to mower use.

When a problem occurs, Do Not overlook the simple causes. For example: starting problems could be

caused by an empty fuel tank.

The following table lists some of the common causes of trouble. Do Not attempt to service or replace major

items or any items that call for special timing or adjustment procedures (such as valves, governor, etc.). Have

this work done by your Engine Service Dealer.

Note: When disconnecting electrical connectors Do Not pull on the wires to separate the connectors.

Problem

Abnormal vibration.

Possible Cause

Corrective Action

1. Install new cutting blade(s).

1. Cutting blade(s) is/are bent or unbalanced.

2. Blade mounting bolt is loose.

3. Loose blower pulley or pulley assembly.

4. Blower impeller blades are bent.

2. Tighten the blade mounting bolt.

3. Tighten the appropriate pulley.

4. Contact an Authorized Service Dealer.

Blower drive belt snaps or breaks frequently.

Excessive grass blowout from the deck.

1. Idler arm is out of alignment.

1. Correct the alignment of the idler arm.

1. Dump more frequently.

1. Hopper is full.

2. Plugged screen in bagger hood.

2. Remove debris, leaves or grass clippings

from the screen.

3. Ground speed is too fast.

4. Blower belt is worn, loose, or broken.

5. Plugged tube or blower.

6. Conditions are dry.

3. Drive slower at full throttle.

4. Install new blower belt.

5. Locate and remove plugged debris.

6. Use lower lift blade.

Blower and tubes plug too frequently.

1. Hopper is too full.

1. Dump more frequently

2. Ground speed is too fast.

3. Grass is too wet.

2. Drive slower at full throttle.

3. Cut grass when it is dry.

4. Grass is too long.

4. Cut grass more frequently or at higher cut

height.

5. Plugged screen in bagger hood.

5. Remove debris, leaves, or grass clippings

from the screen.

6. Blower drive belt is worn, loose, or

broken.

6. Install new belt.

7. Blower is plugged.

7. Use low lift blades in wet conditions.

Blower impeller does not spin freely.

1. Plugged blower.

1. Remove debris, leaves, or grass clippings

from the blower impeller.

2. Impeller not aligned.

1. Deck is too low.

2. Contact an Authorized Service Dealer.

Plowing leaves.

Chasing leaves.

1. Units below Serial Number

600,000: Raise the deck slightly.

Triton: Raise the front adjustable bafﬂe.

1. Units below Serial Number 600,000:

Install an anti-blowout kit–contact

an Authorized Service Dealer.

Triton: Lower the front adjustable

bafﬂe. Match discharge opening to Ultra

Vac intake.

1. Blowout from deck.

Blower components show signs of wear

and/or air cleaners and cooling ﬁns are dirty.

1. Sand or dry conditions.

1. Use low lift blades on the cutting

deck and higher cutting heights.

Clean air cleaners and cooling ﬁns

frequently.

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Exmark Commercial Attachments and Accessories

1Year Limited Warranty

Conditions and Products Covered

Owner’s Responsibilities

Exmark Mfg. Co. Inc. and its affiliate, Exmark Warranty

Company, pursuant to an agreement between them, jointly

warrant on the terms and conditions herein, that we will repair,

replace or adjust any part on these products and found by us

(in the exercise of our reasonable discretion) to be defective in

factory materials or workmanship for a period of one year.

The Exmark attachment or accessory, including any defective

part, must be returned to an authorized Exmark service dealer

within the warranty period. This warranty extends only to

commercial attachments and accessories operated under

normal conditions. You must read the operator’s manual. You

must also properly service and maintain your Exmark product

as described in the operator’s manual or other operational

instructions provided by Exmark. Such routine maintenance,

whether performed by a dealer or by you, is at your expense.

This warranty applies to Exmark commercial attachments and

accessories sold in the U.S. or Canada. This warranty may

only be assigned or transferred to a second (or third) owner by

an authorized Exmark dealer. The warranty period commences

upon the date of the original retail purchase.

General Conditions

The sole liability of Exmark and Exmark Warranty Company

with respect to this warranty shall be repair or replacement of

defective components as set forth herein. Neither Exmark

nor Exmark Warranty Company shall be liable for any

incidental or consequential loss or damage.

Warranty Exceptions

Warranty Period

• Bags, Belts and Tires

90 days

This warranty only includes the cost of parts and labor.

Items and Conditions Not Covered

This warranty does not cover the following:

• Pickup and delivery charges to and from any authorized

Exmark Service Dealer.

• Any damage or deterioration due to normal use, wear and

tear, or exposure.

• Cost of regular maintenance service or parts, such as filters,

fuel, lubricants, tune-up parts, and adjustments.

• Any product or part which has been altered or misused or

required replacement or repair due to normal wear,

accidents, or lack of proper maintenance.

Such damages include but are not limited to:

• Expenses related to gasoline, oil or lubricants.

• Travel time, overtime, after hours time or other

extraordinary repair charges or charges relating to repairs or

replacements outside of normal business hours at the place

of business of the authorized Exmark Service Dealer.

• Rental of like or similar replacement equipment during the

period of any warranty, repair or replacement work.

• Any telephone or telegram charges or travel charges.

• Loss or damage to person or property other than that

covered by the terms of this warranty.

• Any repairs necessary due to use of parts, accessories or

supplies, including gasoline, oil or lubricants, incompatible

with the attachment or accessory or other than as

recommended in the operator's manual or other operational

instructions provided by Exmark.

• Any claims for lost revenue, lost profit or additional cost as

a result of a claim of breach of warranty.

• Attorney's fees.

No Claim of breach of warranty shall be cause for cancellation

or rescission of the contract of sale of any Exmark attachment

or accessory.

All warranty work must be performed by an authorized

Exmark Service Dealer using Exmark approved replacement

parts.

All implied warranties of merchantability (that the

product is fit for ordinary use) and fitness for use (that the

product is fit for a particular purpose) are limited to the

duration of the express warranty.

Instructions for Obtaining Warranty Service

The product must be registered with original proof of purchase

by an Exmark Service Dealer before obtaining any warranty

service.

Some states do not allow exclusions of incidental or

consequential damages, or limitations on how long an

implied warranty lasts, so the above exclusions and

limitations may not apply to you.

Contact any Exmark Service Dealer to arrange service at their

dealership. To locate a dealer convenient to you, access our

website at www.exmark.com. U.S. or Canada customers may

also call 402-223-6375.

This warranty gives you specific legal rights, and you may

also have other rights which vary from state to state.

If for any reason you are dissatisfied with the Service Dealer’s

analysis or with the assistance provided, contact us at:

Exmark Customer Service Department

The Exmark Warranty Company

2101 Ashland Avenue

Beatrice, NE 68310

402-223-6375 or

[email protected]

G4500-433

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Service Record

Date:

Description of Work Done:

Service Done By:

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SEE EXMARK’S COMPLETE LINE OF ACCESSORIES AND OPTIONS

MID-MOUNT RIDING ACCESSORIES AND OPTIONS

CUSTOM RIDE SEAT SUSPENSION SYSTEM

FULL SUSPENSION SEAT

DECK LIFT ASSIST KIT

HITCH KIT

OPERATOR CONTROLLED DISCHARGE

ROLL OVER PROTECTION SYSTEM (ROPS)

SUN SHADE

TRASH CONTAINER

LIGHT KIT

TURF STRIPER

12V POWER PORT

ULTRA VAC COLLECTION SYSTEM

ULTRA VAC QUICK DISPOSAL SYSTEM

MICRO-MULCH SYSTEM

OUT-FRONT RIDING ACCESSORIES AND OPTIONS

CUSTOM RIDE SEAT SUSPENSION SYSTEM

DUAL-TAIL WHEEL

SNOW BLADE

SNOWBLOWER

FLOOR PAN EXTENDER

HITCH KIT

SUN SHADE

TRASH CONTAINER

LIGHT KIT

ULTRA VAC COLLECTION SYSTEM

ULTRA VAC QUICK DISPOSAL SYSTEM

WEATHER CAB

MICRO-MULCH SYSTEM

ROLL OVER PROTECTION SYSTEM (ROPS)

WALK-BEHIND ACCESSORIES AND OPTIONS

GRASS CATCHER

TURF STRIPER

STANDON

MICRO-MULCH SYSTEM

Place Model No. and Serial No.

Label Here (Included in the Literature

Pack) or Fill in Below

Date Purchased

Model No.

Serial No.

Industrial Park Box 808

Beatrice, NE 68310

Part No. 4500-420 Rev. A

(402) 223-6300

Fax (402) 223-5489

Printed in the USA

www.exmark.com

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