Exmark Lawn Mower LAZER AS User Manual

ULTRA VAC®  
LAZER Z® AND  
LAZER Z® AS MODELS  
For Ultra Vac Serial Nos.  
790,000 & Higher  
(To fit Lazer Z (LZZ) and  
Lazer Z AS (LZAS) Units  
Serial Nos. 790,000 & Higher)  
Part No. 4500-511 Rev. A  
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Introduction  
CONGRATULATIONS on the purchase of your  
Exmark Ultra Vac. 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  
Figure 1  
1. Model and serial number location  
BEFORE OPERATING YOUR MOWER,  
CAREFULLY READ THIS MANUAL IN ITS  
ENTIRETY.  
Model No.  
Serial No.  
By following the operating, maintenance, and safety  
instructions, you will prolong the life of your Ultra  
Vac, maintain its maximum efficiency, and promote  
safe operation.  
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.  
3
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Contents  
Introduction ........................................................... 3  
Torque Requirements .................................... 10  
Periodic Maintenance ....................................... 20  
Check Blower Housing/Impeller................... 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.  
• 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.  
Safe Operating Practices  
Training  
• Read the tractor and Ultra Vac 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  
progressively greater care on slopes as the hopper  
fills.  
Maintenance and Storage  
• Disengage PTO, 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  
wheel weights or counter weights to improve  
stability. Always install and remove the Ultra Vac,  
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 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 hopper fills with grass clippings. Use  
7
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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.  
1-653554  
1-653558  
103-6607  
LZUV3B Units Only  
98-5954  
103-6605  
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Safety  
103-3508  
LZUV2B Units Only  
109-5890  
LZUV3B Units Only  
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Specifications  
Specifications  
Model Numbers  
Serial Nos: 790,000 and Higher  
LZUV2B–Fits Lazer Z (LZZ) and Lazer Z AS (LZAS) with 48 or 52 inch deck.  
LZUV3B–Fits Lazer Z (LZZ) and Lazer Z AS (LZAS) with 60 or 72 inch deck.  
Systems  
Overall Length:  
LZUV2B  
Bagging System  
w/Ultra Vac  
• Collection bins:  
102.25 inches (259.7 cm)  
102.25 inches (259.7 cm)  
Lazer Z w/48 inch Deck  
Lazer Z w/52 inch Deck  
– Commercial grade, cloth mesh bags with  
reinforced bottoms.  
– LZUV2B Capacity: 8.0 bushels  
– LZUV3B Capacity: 13.4 Bushels  
• Dump Mechanism: Manual lift off  
LZUV3B  
w/Ultra Vac  
107.00 inches (271.8 cm)  
110.00 inches (279.4 cm)  
Lazer Z w/60 inch Deck  
Lazer Z w/72 inch Deck  
• Blower Tube: Fixed, abrasion resistant molded  
polyethylene.  
• Impeller: 5–bladed, 1/4 inch (6.4 mm) thick  
abrasion resistant steel, with vertical axis.  
Curb Weight:  
LZUV2B  
• Impeller bearings: 1 inch (2.5 cm) sealed  
non-greaseable bearings.  
Ultra Vac Weight  
309 lb (140 kg)  
For units w/48 inch Deck  
(3 toe board weights)  
Dimensions  
266 lb (120 kg)  
For units w/52 inch Deck  
(2 toe board weights)  
Overall Width:  
LZUV2B  
LZUV3B  
w/Ultra Vac QDS  
Ultra Vac Weight  
62.50 inches (158.8 cm)  
67.75 inches (172.1 cm)  
Lazer Z w/48 inch Deck  
Lazer Z w/52 inch Deck  
449 lb (204 kg)  
For units w/60 inch Deck  
(2 toe board weights)  
406 lb (184 kg)  
For units w/72 inch Deck  
(1 toe board weights)  
LZUV3B  
w/Ultra Vac  
Torque Requirements  
75.00 inches (190.5 cm)  
87.25 inches (221.6 cm)  
Lazer Z w/60 inch Deck  
Lazer Z w/72 inch Deck  
Bolt Location  
Torque  
Impeller Spindle Bottom 55-60 ft-lb (75-81 N-m)  
Nut  
Impeller Spindle Top Nut 75-80 ft-lb (102-108 N-m)  
10  
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Operation  
Product Overview  
Operation  
Note: Determine the left and right sides of the  
machine from the normal operating position.  
Important: For Serial Numbers 790,000 and  
higher, multiple accessories added to a base  
unit can change the stability of the machine.  
Read the unit operator’s manual to determine  
if counterbalance weights are necessary for the  
accessories installed on the unit.  
Important: Due to the added weight of the  
Ultra Vac, it is important to ensure the parking  
brake on your mower is adjusted properly. Before  
installing the Ultra Vac, make sure to re-adjust  
the parking brake on your mower as outlined in  
the “Adjusting the Parking Brake” procedure in  
the Maintenance section of the tractor Operator’s  
manual.  
Figure 4  
1. Hopper  
2. Toeboard weight  
4. Blower  
5. Tube  
3. Caster weight (LZUV3B 6. Bag  
Units Only)  
Pre-Start  
Make sure you understand the controls, their  
locations, their functions, and their safety  
requirements.  
Ensure the blower, belt cover, bags, tubes and hopper  
are in good condition, properly attached, and latched.  
Important: Verify that the reinforced bumpers  
are installed on your unit prior to operation.  
Refer to the Maintenance section and perform all the  
necessary inspection and maintenance steps.  
Operating Instructions  
Mowing  
1. The Ultra Vac blower operates when the PTO  
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, 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 have  
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Operation  
stopped before clearing blower assembly or  
mower deck.  
3. To remove the bags, first disengage the PTO, stop  
the engine and wait for all moving parts to stop.  
Open the hopper and remove the bags by lifting  
up on the rear of the bag, then unhooking the  
front clip. Empty the bags by inverting them.  
4. Reinstall bags, close and latch hopper before  
continuing mowing.  
Tips for mowing conditions:  
• 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.  
Figure 5  
7. Toe board weight  
1. Hopper  
• 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.  
• 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.  
2. Reinforced bumpers  
3. Clevis pin  
4. Caster arm weight  
5. Hairpin  
8. Belt cover  
9. Blower  
10. Tubes  
11. Bag  
6. For LZUV3B Units Only  
4. Remove the knob from the belt cover bracket and  
take off the belt cover.  
• When the Ultra Vac 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 Ultra Vac at this point will minimize  
the potential for the tube to plug.  
Collection System Removal for Side  
Discharge  
1. Empty the hopper.  
CAUTION  
The hopper assembly is heavy when it is full,  
which may make it difficult to remove the  
hopper assembly from the unit. The entire  
hopper assembly may fall, which may cause  
injury.  
Figure 6  
1. Belt cover bracket  
2. Belt cover  
3. Knob  
4. Belt  
5. Deck sheave  
Prior to removing the hopper assembly from  
the unit, first empty the contents.  
2. Disengage the PTO, stop engine and wait for all  
moving parts to stop. Remove key and engage  
parking brake.  
3. Remove the discharge tube by releasing the latches  
at the blower. Slide the tube off the blower outlet  
and remove the upper end from the hopper.  
12  
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Operation  
CAUTION  
WARNING  
The deck sheave will become very hot.  
Touching a hot deck sheave can cause severe  
burns.  
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.  
Allow the deck sheave to cool completely  
before removing the belt.  
Never operate mower unless discharge  
deflector, or entire grass collection system, or  
mulch kit is installed.  
5. Pull the idler release handle and remove the belt  
from the upper groove of the deck sheave.  
6. Unlatch the front end of the blower. Pivot the  
blower back and lift it off the deck.  
8. Re-install the plastic belt cover and tighten the  
knobs.  
9. Remove the bags from the hopper assembly by  
opening the hopper and lifting up on the rear of  
the bag and then unhooking the front clip.  
10. Remove the hopper assembly. Do Not use the  
exhaust diverter as a handle when removing the  
hopper.  
CAUTION  
The exhaust diverter is hot. Touching a hot  
exhaust diverter can cause severe burns.  
Figure 7  
Allow the exhaust diverter to cool completely  
before removing the hopper assembly.  
1. Blower latch  
2. Pivot blower away from deck  
A. Push and hold the hopper assembly towards  
the unit and pull the hairpins and mount pins  
from frame mount barrel located on each side  
of the frame legs.  
7. Install the discharge deflector using the chute  
pivot pin and hairpin (see Figure 8).  
WARNING  
When the mount pins have been removed,  
the hopper assembly may fall. A falling  
hopper assembly may cause injury.  
Use care when the mount pins are removed  
and if necessary, use assistance when  
lowering the hopper assembly to the ground.  
Figure 8  
1. Hairpin  
2. Chute pivot pin  
3. Discharge deflector  
B. If necessary, use assistance and carefully lower  
the hopper assembly to the ground.  
C. Re-insert the mount pins into the frame  
mount barrel and secure with the hairpin.  
11. The removable weights must be removed from  
the unit. To remove the weight on the front of  
13  
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Operation  
the toe board, remove the two hairpins that retain  
it and then lift it from the mount bracket. The  
bracket bolted to the toe board remains on the  
unit.  
2. Remove hairpin and chute pivot pin. Remove  
discharge deflector. Pivot pin and hair pin may be  
stored in the pivot holes of the discharge deflector  
during bagging operation.  
3. Lay the hopper assembly down as shown in  
Figure 9.  
For the LZUV3B Units: Remove the caster  
weights by loosening the clamping knobs until the  
weight can be moved relative to the caster arm.  
Remove the hairpins and clevis pins that hold  
the weights to the caster arms. Carefully lift the  
weights off of the caster arms.  
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.  
Figure 9  
Note: The portions of the Ultra Vac collection  
system that are not bolted to the mower are  
designed to be installed or removed in their  
entirety. Do Not operate the mower with only a  
portion of the Ultra Vac installed.  
1. Lower bagger mount bar 2. Frame notch  
4. Remove the hairpin from the mount pin and pull  
the mount pin out of the frame mount barrel.  
5. Pick up the frame legs and hook the notch onto  
the lower mount bar (see Figure 9).  
WARNING  
Caster or toe board weights installed without  
the collection system may cause loss of  
traction and steering control. Loss of control  
can result in an accident which may cause  
death, injury, or property damage.  
6. Lift the hopper assembly and pivot it upward  
towards the back of the unit (see Figure 10).  
Install caster or toe board weights ONLY  
when the collection system is installed.  
12. The machine can now be used for side discharge  
mowing.  
Collection System Installation  
Important: Verify that the reinforced bumpers  
are installed on your unit prior to operation.  
Important: Due to the added weight of the  
Ultra Vac, it is important to ensure the parking  
brake on your mower is adjusted properly. Before  
installing the Ultra Vac, make sure to re-adjust  
the parking brake on your mower as outlined in  
the “Adjusting the Parking Brake” procedure in  
the Maintenance section of the tractor Operator’s  
manual.  
Figure 10  
1. Rotate hopper assembly 5. Hairpin  
2. Rear bumper  
6. Mount pin  
7. Opening  
3. Mount bracket  
4. Frame mount barrel  
1. Stop engine, remove key, and wait for all moving  
parts to stop. Engage parking brake.  
7. Continue to push the hopper assembly forward  
until it contacts the mount bracket.  
14  
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Operation  
8. Adjust the exhaust diverter up or down in the  
slots so it fits over the muffler.  
side or temporarily removed. Either loosen  
or remove both nuts on the top and bottom  
of the belt guide. Once the belt is installed  
on the impeller sheave, reinstall the belt guide  
and tighten all hardware.  
9. If needed, install washers between the exhaust  
diverter and the frame to space the guard outward.  
10. Install the mount pin into the frame mount  
barrel. Make sure that it extends into the opening  
between the rear bumper and the mount bracket  
(see Figure 10).  
11. Align the holes in the mount pin and frame  
mount barrel and insert the hairpin to lock the  
hopper assembly into place.  
12. Tighten the hardware on the exhaust diverter.  
13. Raise the hopper and install the bag assemblies by  
inserting the hook portion into the slots in the  
bagger support rods.  
14. Remove the belt cover on the right side of the  
deck.  
Figure 12  
15. Mount the blower on the deck by inserting the  
mounting pin into the tube welded to the rear  
corner of the deck (see Figure 11). 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 latches  
to lock the blower in this position. Adjust the  
tension on the latch to hold the blower up to the  
deck, yet allow for release by hand.  
1. Nut  
2. Belt guide  
B. Pull the spring loaded idler release handle  
back and install the belt in the upper groove  
of the top spindle sheave. The belt should be  
routed as shown in Figure 13.  
Figure 13  
Small Decks — View from Top of Blower  
Figure 11  
1. Spring loaded idler  
2. Impeller sheave  
3. Fixed idler  
4. Belt guide  
5. Deck sheave  
1. Slot  
2. Front pin  
3. Blower latch  
4. Mounting pin  
5. Deck tube  
For Large Decks:  
16. Belt Installation:  
For Small Decks:  
Pull the spring loaded idler back and slip the belt  
over the top deck sheave.  
A. Slip the belt over the impeller sheave on the  
blower.  
Note: It may be easier to install the belt if  
the belt guide is temporarily shifted to one  
15  
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Operation  
Figure 14  
Large Decks — View from Top of Blower  
Figure 16  
3. Deck lip  
1. Blower  
2. Belt cover  
1. Impeller sheave  
3. Spring loaded idler  
2. Deck sheave  
20. Install the knob and its hardware.  
21. Slip the upper and the lower tubes together.  
22. Insert the upper tube into the hopper seal –  
push in then pull out so that the seal is extended  
outward.  
17. Position the belt cover at an angle and slide it  
under the mower frame (see Figure 15).  
23. Align the dimple on the upper tube with the end  
of hopper seal and center between the two screws  
as shown in Figure 17.  
Figure 15  
1. Blower  
3. Mower frame  
2. Belt cover  
Figure 17  
18. Push down on the back of the cover and slide it  
backwards under the blower.  
1. Dimple  
19. Slide the belt cover forward until it is seated under  
both lips on the deck.  
24. Set the deck in lowest cutting position.  
25. Slide the lower tube onto the blower and attach  
the latches. (Make sure that the upper tube does  
not move out of alignment).  
26. If the lower tube is replaced, drill three 7/32 inch  
holes in the lower tube using the upper tube holes  
as reference. See Figure 18.  
27. Remove the tubes from unit and assemble the  
upper and the lower tubes using three #10-24  
x 3/4 inch hex washer head screws, three #10  
washers, and three #10-24 nyloc nuts. The screw  
head should be installed to the inside of the  
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Operation  
tube to provide minimum obstruction to flow.  
Make sure that the upper and the lower ends are  
oriented properly as the tubes are assembled.  
(Parting lines should roughly be lined up.)  
Figure 19  
30. For LZUV3B Units Only:  
A. Install the removable caster weights on the  
caster arms (see Figure 20).  
B. Insert the clevis pin through the bracket hole  
and fasten with a hairpin.  
C. Tighten knob on weight assembly until the  
weight is clamped securely to the caster arm.  
Figure 18  
1. Drill the holes here  
28. Slide the lower end of the tube assembly over the  
blower outlet and align the notch with the tube  
latch. Latch the tube to the blower.  
29. Install the removable weights. Hook the front toe  
board weight assembly over the top of the weight  
mounting plate and secure with two hairpins  
Figure 19).  
Weight Quantities  
Deck  
Size  
48 inch  
3
52 inch  
2
60 inch  
2
72 inch  
1
Toe  
Board  
Weight  
Figure 20  
For LZUV3B Units Only  
Caster  
Weight  
2
2
1. Clevis pin  
2. Knob  
3. Hairpin  
4. Caster weight  
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 to that you  
Do Not set them down on your hands or fingers.  
Transporting  
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  
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Operation  
has all necessary lighting and marking as required by  
law. Secure a trailer with a safety chain.  
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.  
CAUTION  
This unit does not have proper turn  
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.  
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  
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.  
Do Not drive a unit on a public street or  
roadway.  
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.  
Important: Do Not attempt to turn the unit  
while on the ramp, you may lose control and  
drive off the side.  
• Use extreme caution when operating a  
unit on a ramp.  
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.  
• Use only a single, full width ramp; Do  
Not use individual ramps for each side  
of the unit.  
• If individual ramps must be used, use  
enough ramps to create an unbroken  
ramp surface wider than the unit.  
Rollover Protection System (ROPS)  
The roll bar has an intermediate position that allows  
the bar to be lowered to provide over head clearance,  
but not rest directly on the Ultra Vac assembly. Insert  
a 1/2 x 3 inch bolt and 1/2 inch nut (or Exmark  
service parts: clevis pin P/N 283-55 and hairpin P/N  
1-806005) into the downstop hole on each side and  
lower the roll bar.  
• 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.  
Loading a Unit  
Do Not transport the unit with the hopper full.  
Empty the hopper before attempting to load unit  
on trailer or truck. This will reduce the chance  
of rearward tip up. Use extreme caution when  
Figure 21  
1. Intermediate position  
2. Downstop hole  
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Operation  
Important: The roll bar is an integral and  
effective safety device. Keep the roll bar in the  
raised and locked position when operating the  
mower. Lower the roll bar temporarily only when  
absolutely necessary.  
Refer to the Operator’s manual supplied with your  
tractor for additional ROPS safety and operating  
instructions.  
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Maintenance  
Maintenance  
Note: Determine the left and right sides of the machine from the normal operating position.  
WARNING  
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 bags.  
• Check exhaust diverter.  
Before each use or daily  
• Clean muffler and rear frame area.  
• Clean rear screen in the hopper.  
• Lubricate grease fittings.  
• Check condition of belt.  
• Clean blower.  
Every 25 hours  
Every 50 hours  
Yearly or before storage  
Periodic Maintenance  
Check Bags  
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 bag will deteriorate  
and wear. Objects could exit through worn  
bag 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 bags frequently for tears and holes.  
Replace worn bags.  
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Maintenance  
Check Exhaust Diverter  
Service Interval: Before each use or daily  
Adjustments  
Adjusting the Blower Drive  
Belt Position  
1. Read the operator’s manual for the UltraVac  
and mower before performing this adjustment.  
Make sure that you understand the controls, their  
locations their functions and safety requirements.  
CAUTION  
The exhaust diverter is hot. Touching a hot  
exhaust diverter can cause severe burns.  
Allow the exhaust diverter to cool completely  
before performing maintenance.  
2. Ensure the blower, belt cover, bags, tube and  
hopper are in good condition, properly attached  
and latched.  
1. Stop engine, wait for all moving parts to stop, and  
remove key. Engage parking brake.  
2. Inspect and remove debris from the exhaust  
diverter daily.  
3. Run the unit with the PTO and the blower  
engaged for two minutes.  
4. Disengage the PTO, stop the engine and remove  
the key.  
Lubricate Grease Fittings  
5. 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. If the belt is not riding near  
the center of the idler, remove the blower, and  
bend the idler arm slightly.  
Note: See chart for service intervals.  
1. Stop engine, wait for all moving parts to stop, and  
remove key. Engage parking brake.  
2. Lubricate fittings with NGLI grade #2  
multi-purpose gun grease.  
6. Reinstall the blower and belt cover and perform  
steps 3-5 again to verify belt position.  
Refer to the following chart for fitting locations  
and lubrication schedule.  
Lubrication Chart  
Fitting  
Locations  
Initial  
Pumps  
Number of  
Places  
Service  
Interval  
1–2  
1
25 Hours  
1. Idler  
Bushings  
Check Condition of Belt  
Service Interval: Every 50 hours  
All Units  
1. Stop engine, wait for all moving parts to stop, and  
remove key. Engage parking brake.  
2. Inspect the belt for damage or wear. Replace belt  
with one of the following:  
Part No.  
1-653333  
1-653438  
103-0866  
103-0867  
Deck  
48 inch  
52 inch  
60 inch  
72 inch  
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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.  
Clean Rear Screen In Hopper  
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 hopper 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  
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. Empty bags more frequently.  
1. Bags are full.  
2. Plugged screen in bagger hopper.  
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. Bags are too full.  
1. Empty bags 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 hopper.  
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.  
1. Raise the deck slightly.  
Plowing leaves.  
Chasing leaves.  
1. Blowout from deck.  
2. Hopper is full.  
1. Check for clogged tubes.  
2. Dump more frequently.  
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  
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  
G4500-433  
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Notes:  
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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.  
© 2009 Exmark Mfg. Co., Inc.  
Industrial Park Box 808  
Beatrice, NE 68310  
Part No. 4500-511 Rev. A  
(402) 223-6300  
Fax (402) 223-5489  
Printed in the USA  
All Rights Reserved  
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