Interactive Manual

Introduction

CONGRATULATIONS on the purchase of your Exmark UltraVac. This product has been carefully designed and manufactured to give you a maximum amount of dependability and years of trouble-free operation.

This collection system is to be used with specific Exmark machines intended to collect grass clippings and leaves. Using this product for purposes other than its intended use could prove dangerous to you and bystanders

This manual contains operating, maintenance, adjustment, and safety instructions for your Exmark UltraVac.

BEFORE OPERATING YOUR MOWER, CAREFULLY READ THIS MANUAL IN ITS ENTIRETY.

By following the operating, maintenance, and safety instructions, you will prolong the life of your UltraVac, maintain its maximum efficiency, and promote safe operation.

To maximize safety, performance, and proper operation of this machine, it is essential that all operators carefully read and fully understand the contents of the Operator’s manual provided with the product. Failure to comply with the operating instructions or receive proper training may result in injury. Go to https://www.Exmark.com for additional safe operation information, such as safety tips, training materials, and Operator’s manuals.

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 identify the location of the model and serial numbers on the product. Write the numbers in the space provided.

Figure 1

For complete warranty details, see https://www.Exmark.com. You may also call us 402-223-6375 to request a written copy of the product’s warranty.

Warning

CALIFORNIA

Proposition 65 Warning

Use of this product may cause exposure to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Exmark reserves the right to make changes or add improvements to its products at any time without incurring any obligation to make such changes to products manufactured previously. Exmark, or its distributors and dealers, accept no responsibility for variations which may be evident in the actual specifications of its products and the statements and descriptions contained in this publication.

Exmark Parts Plus EN

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.

This symbol means: ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!

Figure 2

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.

DANGER: Indicates an imminently hazardous situation which, if not avoided, Will result in death or serious injury.

WARNING: Indicates a potentially hazardous situation which, if not avoided, Could result in death or serious injury.

CAUTION: 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.

General Safety Information

This machine is capable of amputating hands and feet and of throwing objects. Always follow all safety instructions to avoid serious personal injury or death.

Read, understand, and follow all instructions and warnings in the mower and UltraVac Operator’s Manuals and on the machine, engine, and attachments. All operators and mechanics should be trained. If the operator(s) or mechanic(s) can not read this manual, it is the owner’s responsibility to explain this material to them; other languages may be available on our website.
Only allow trained, responsible, and physically capable operators that are familiar with the safe operation, operator controls, and safety signs and instructions to operate the machine. Never let children or untrained people operate or service the equipment. Local regulations may restrict the age of the operator.
Do Not operate the machine near drop-offs, ditches, embankments, water, or other hazards.
Keep bystanders and children out of the operating area.
Do Not put your hands or feet near moving parts.
Do Not operate the machine without all safety shields, guards, switches, and other devices in place and in proper working condition.
Park machine on level ground, disengage drives, set parking brake, stop engine, and remove key. Wait for all moving parts to stop before leaving the operator’s position. Allow the machine to cool before servicing, adjusting, fueling, unclogging, cleaning, or storing.

Safety and Instructional Decals

Keep all safety signs legible. Remove all grease, dirt and debris from safety signs and instructional labels.
Replace all worn, damaged, or missing safety signs.
When replacement components are installed, be sure that current safety signs are affixed to the replaced components.
If an attachment or accessory has been installed, make sure current safety signs are visible.
New safety signs may be obtained from your authorized Exmark equipment dealer or distributor or from Exmark Mfg. Co. Inc.
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.
Familiarize yourself with the following safety signs and instruction labels. They are critical to the safe operation of your Exmark commercial mower.

112-9028

Warning—stay away from moving parts; keep all guards and shields in place.

126-4659

Warning-Hot pulley; allow to cool.

126-4662

Warning-Read the Operator’s manual for correct quantity of counterbalance weight(s).
Loss of traction and steering or reduced stability hazard-UltraVac counterbalance weight(s) installed without UltraVac may cause loss of traction and steering control. UltraVac installed without UltraVac counterbalance weight(s) will cause reduced stability. Install weight(s) only when UltraVac is installed.

126-4853

Impeller/Rotating Blades hazard-Keep hands away from moving parts. Keep all safety devices in place and working. Do Not reach into blower unless rotation indicator has stopped.

133-8061

126-4584

Impeller/Rotating Blades hazard-Keep hands away from moving parts. Keep all safety devices in place and working. Do Not reach into blower unless rotation indicator has stopped. Disengage PTO, stop engine, remove key, WAIT FOR MOVING PARTS TO STOP.
Rotation indicator
Thrown objects hazard-High speed discharge can cause injury or death. Do Not run blower without entire collection system installed and latched. Read the Operator’s manual.

Specifications

Systems

Bagging System

Collection bins:
- Commercial grade, cloth mesh bags with reinforced bottoms.
- Capacity: 13.4 Bushels
Dump Mechanism: Manual lift off
Blower Tube: Fixed, abrasion resistant molded polyethylene.
Impeller: 5–bladed, 1/4 inch (6.4 mm) thick abrasion resistant steel, with vertical axis.
Impeller bearings: 1 inch (2.5 cm) sealed non-greaseable bearings.

Dimensions

Overall Width:

	w/UltraVac
Lazer Z Diesel w/60 inch Deck	74.9 inches (190.2 cm)
Lazer Z Diesel w/72 inch Deck	87.0 inches (221.0 cm)

Overall Length:

	w/UltraVac
Lazer Z Diesel w/60 inch Deck	120.8 inches (306.8 cm)
Lazer Z Diesel w/72 inch Deck	124.0 inches (315.0 cm)

Curb Weight:

UltraVac Weight (W/Completing Kit): 430 lb (195 kg)

Torque Requirements

Bolt Location	Torque
Impeller Spindle Bottom Nut	55-60 ft-lb (75-81 N-m)
Impeller Spindle Top Nut	75-80 ft-lb (102-108 N-m)

Product Overview

Figure 3

Hood Assembly
Caster weight
Blower
Tube
Bag

Operation

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

Important: Due to the added weight of the UltraVac, it is important to ensure the parking brake on your mower is adjusted properly. Before installing the UltraVac, 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 mower Operator's manual.

Before Operation

Before Operation Safety

Evaluate the terrain to determine what accessories and attachments are needed to properly and safely perform the job. Only use accessories and attachments approved by Exmark.
Inspect the area where the machine is to be used and remove all rocks, toys, sticks, wires, bones, and other foreign objects. These can be thrown or interfere with the operation of the machine and may cause personal injury to the operator or bystanders.
The machine that the UltraVac attaches to was designed for one operator only. Do Not carry passengers.
Wear appropriate personal protective equipment such as safety glasses, long pants, substantial slip-resistant footwear, and hearing protection. Tie back long hair and avoid loose clothing and loose jewelry which may get tangled in moving parts.
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. Wear hearing protection when operating this machine.
Do Not operate the mower when people, especially children, or pets are in the area. Shut off the machine and attachment(s) if anyone enters the area.
Do Not operate the machine without the entire grass collection system, discharge deflector, or other safety devices in place and in proper working condition. Grass catcher components are subject to wear, damage and deterioration, which could expose moving parts or allow objects to be thrown. Frequently check for worn or deteriorating components and replace them with the manufacturer’s recommended parts when necessary.
Ensure the blower, bags, tubes and hood assembly are in good condition, properly attached, and latched.

Operating Instructions

During Operation Safety

General Safety

The operator must use their full attention when operating the machine. Do Not engage in any activity that causes distractions; otherwise, injury or property damage may occur.

Operate the machine only in good visibility and appropriate weather conditions. Do Not operate the machine when there is the risk of lightning.
Keep away from holes, ruts, bumps, rocks, and other hidden hazards. Use care when approaching blind corners, shrubs, trees, tall grass or other objects that may hide obstacles or obscure vision. Uneven terrain could overturn the machine.
Do Not operate the machine without all safety shields, guards, switches, and other devices in place and in proper working condition.
Keep your hands and feet away from the moving parts. Keep clear of the discharge opening.
Danger
There are rotating blades in the blower and under the mower deck. Blade contact will 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.
- Never operate mower unless discharge deflector, entire grass collection system, or mulch kit is installed.
Do Not mow with the discharge deflector raised, removed, or altered unless there is a grass-collection system or mulch kit in place and working properly.
Be aware of the mower discharge path and direct discharge away from others. Avoid discharging material against a wall or obstruction as the material may ricochet back toward the operator. 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.
Warning
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.
Be alert, slow down and use caution when making turns. Do Not mow in reverse unless it is absolutely necessary. Always look down and behind you before moving the machine in reverse.
Park the machine on level ground. Stop engine, wait for all moving parts to stop, and remove key.
- Before checking, cleaning or working on the mower.
- After striking a foreign object or abnormal vibration occurs (inspect the mower for damage and make repairs before restarting and operating the mower).
- Before clearing blockages.
- Whenever you leave the mower. Do Not leave a running machine unattended.
Stop engine, wait for all moving parts to stop:
- Before refueling.
- Before dumping the grass catcher.
- Before making height adjustments.
Tragic accidents can occur if the operator is not alert to the presence of children. Children are often attracted to the machine and the mowing activity. Never assume that children will remain where you last saw them.
- Keep children out of the mowing area and under the watchful care of another responsible adult, not the operator.
- Be alert and turn the machine off if children enter the area.
- Before and while backing or changing direction, look behind, down, and side-to-side for small children.
- Never allow children to operate the machine.
- Do Not carry children, even with the blades shut off. Children could fall off and be seriously injured or interfere with the safe operation of the machine. Children that have been given rides in the past could suddenly appear in the working area for another ride and be run over or backed over by the machine.

Mowing

The UltraVac blower operates when the PTO is engaged. Be sure that all persons are clear of the mower deck before engaging the cutting blades. To engage the PTO, pull the switch outward to engage the cutting blades and blower.
Disengage the PTO by pushing 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 stopped before clearing blower assembly or mower deck.
To remove the bags, first disengage the PTO, stop the engine and wait for all moving parts to stop. Open the hood assembly and remove the bags by lifting up on the rear of the bag, then unhooking the front clip. Empty the bags by inverting them.
Reinstall bags, close and latch hood assembly 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.
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.
When the bags get full, the sound of the blower will change and there will be slight blowout from the front right corner of the deck. Emptying the bags at this point will minimize the potential for the tube to plug.

Collection System Removal for Side Discharge

Disengage the PTO, stop engine and wait for all moving parts to stop. Remove key and engage parking brake.
Empty the bags.

Caution

The bags are heavy when full, which may make it difficult to remove the hood assembly from the machine. The entire hood assembly may fall, which may cause injury.

Prior to removing the hood assembly from the machine, first empty the contents.
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 hood assembly.
Figure 4
1. Hood assembly
2. Clevis pin
3. Caster arm weight
4. Hairpin
5. Belt cover
6. Blower
7. Tubes
8. Bag
Remove the knob from the belt cover bracket and take off the belt cover.
Figure 5
1. Belt cover bracket
2. Belt cover
3. Knob
4. Belt
5. Deck sheave
Caution

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.
Pull the idler release handle and remove the belt from the upper groove of the deck sheave.
Unlatch the front end of the blower. Pivot the blower back and lift it off the deck.
Figure 6
1. Blower latch
2. Pivot blower away from deck
Install the discharge deflector using the chute pivot pin and hairpin (see Figure 7).
Figure 7
1. Hairpin
2. Chute pivot pin
3. Discharge deflector
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 death.

Never operate mower unless discharge deflector, or entire grass collection system, or mulch kit is installed.
Re-install the plastic belt cover and tighten the knobs.
Remove the bags from the hood assembly by opening the hood and lifting up on the rear of the bag and then unhooking the front clip.
Remove the hood assembly.
Remove the caster weights.
1. Remove the 3/8-16 inch nyloc nut from the bottom of the 45 lb (20.4 kg) weight mounted to the caster arm. Remove the 3/8-16 x 8 inch screw and washer.
  Figure 8
  1. 3/8-16 x 6 1/2 inch screw
  2. Knob
  3. Bracket
  4. 45 lb (20.4 kg) caster weight
  5. Clevis pin
  6. Hairpin
  7. 20 lb (9.1 kg) caster weight
  8. 3/8-16 inch nyloc nut
  9. Washer
  10. 3/8-16 x 8 inch screw
2. Remove the 3/8-16 inch nyloc nut from the top 20 lb (9.1 kg) caster weight.
3. Carefully lift and remove each weight from 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.
4. Remove bracket assembly and all mounting hardware from the caster arm.
5. Repeat for the RH side.
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.

Note: The portions of the UltraVac 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 UltraVac installed.

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.

Install caster or toe board weights ONLY when the collection system is installed.
The machine can now be used for side discharge mowing.

Collection System Installation

Stop engine, remove key, and wait for all moving parts to stop. Engage parking brake.
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.
Lay the hood assembly down behind the machine. Pick up the bagger frame legs and hook the notch onto the lower bagger mount bar as shown in Figure 9.
Figure 9
1. Lower bagger mount bar
2. Frame leg
Lift the hood assembly and pivot it upward towards the back of the machine. Attach the rod support to each side of the rear frame as shown in Figure 10.
Figure 10

Right side shown
1. Rod support assembly
2. Bagger pin
3. Washer
4. Mount pin with lanyard
5. 1/2 inch lock nut
Raise the hood and install the bag assemblies by inserting the hook portion into the slots in the bagger support rods.
Remove the belt cover on the right side of the deck.
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.
Figure 11
1. Slot
2. Front pin
3. Blower latch
4. Mounting pin
5. Deck tube
Pull the spring loaded idler back and slip the belt in the upper groove of the deck sheave.
Figure 12

View from Top of Blower
1. Impeller sheave
2. Deck sheave
3. Spring loaded idler
Position the belt cover at an angle and slide it under the mower frame (see Figure 13).
Figure 13
1. Blower
2. Belt cover
3. Mower frame
Push down on the back of the cover and slide it backwards under the blower.
Slide the belt cover forward until it is seated under both lips on the deck.
Figure 14
1. Blower
2. Belt cover
3. Deck lip
Install the knob and its hardware.
Slip the upper and the lower tubes together.
Insert the upper tube into the hood seal – push in then pull out so that the seal is extended outward.
Align the dimple on the upper tube with the end of hood seal and center between the two screws as shown in Figure 15.
Figure 15
1. Dimple
Set the deck in lowest cutting position.
Slide the lower tube onto the blower outlet and attach the latches. (Make sure that the upper tube does not move out of alignment).
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 16.
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 tube to provide minimum obstruction to flow. Make sure that the upper and the lower ends are oriented properly as the tubes are assembled.
Figure 16
1. Drill the holes here
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.
Install the caster weights.
1. On the LH side, insert the 3/8-16 x 6 1/2 inch screw into hole on the bottom side of the bracket and the rear of the removable 45 lb (20.4 kg) caster weight as shown in Figure 17. Carefully place the weight and bracket assembly onto the caster arm centering the hole of the weight over the caster wheel.
  Figure 17
  1. 3/8-16 x 6 1/2 inch screw
  2. Knob
  3. Bracket
  4. 45 lb (20.4 kg) caster weight
  5. Clevis pin
  6. Hairpin
  7. 20 lb (9.1 kg) caster weight
  8. 3/8-16 inch nyloc nut
  9. Washer
  10. 3/8-16 x 8 inch screw
  Important: For correct traction and stability, install the required quantity of counterbalance weight(s) as specified in the UltraVac Operator’s manual, setup instructions, and/or completing kit.
  
  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.
2. Secure the bottom of the bracket to the caster arm with a clevis pin and hairpin.
3. Tighten the knob on weight assembly until it is clamped securely to the caster arm.
4. Install three 20 lb (9.1 kg) caster weights over the weight assembly screw and stack them securely onto the 45 lb (20.4 kg) caster weight. Secure the rear of the weight assembly with a 3/8-16 inch nyloc nut.
5. Install 3/8-16 x 8 inch screw and washer through the top of the front holes of the weight assembly and secure with 3/8-16 inch nyloc nut.
6. Repeat for the RH side.

After Operation

General Safety

Park machine on level ground, disengage drives, set parking brake, stop engine, and remove key. Wait for all moving parts to stop before leaving the operator’s position. Allow the machine to cool before servicing, adjusting, fueling, unclogging, cleaning, or storing.
Clean grass, leaves, excessive grease or oil, and other debris from the mower deck, muffler, drives, grass catcher, and engine area to help prevent fires.

Maintenance

Maintenance Safety

Park machine on level ground, disengage drives, set parking brake, stop engine, and remove key. Wait for all moving parts to stop before leaving the operator’s position. Allow the machine to cool before servicing, adjusting, fueling, unclogging, cleaning, or storing.

Warning

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.
If you leave the key in the switch, someone could accidently start the engine and seriously injure you or other bystanders. Remove the key from the switch before you perform any maintenance.
Never allow untrained personnel to service machine.
Keep all guards, shields, switches, and all safety devices in place and in proper working condition. Frequently check for worn or deteriorating components and replace them with genuine Exmark parts when necessary.

Warning

Removal or modification of original equipment, parts and/or accessories may alter the warranty, controllability, and safety of the machine. Unauthorized modifications to the original equipment or failure to use original Exmark parts could lead to serious injury or death. Unauthorized changes to the machine, engine, fuel or venting system, may violate applicable safety standards such as: ANSI, OSHA and NFPA and/or government regulations such as EPA and CARB.
Keep your hands and feet away from moving parts or hot surfaces. If possible, Do Not make adjustments with the engine running.

Warning

Contact with moving parts or hot surfaces may cause personal injury.

Keep your fingers, hands, and clothing clear of rotating components and hot surfaces.
Keep all parts in good working condition and all hardware tightened.

Recommended Maintenance Schedule(s)

Maintenance Service Interval	Maintenance Procedure
Before each use or daily	Check the blower housing/impeller. Check bags. Clean muffler and rear frame area. Clean hood screen on mower. Clean rear screen in the hood assembly.
Every 25 hours	Lubricate grease fittings.
Every 50 hours	Check condition of belt.
Yearly or before storage	Clean blower.

Periodic Maintenance

Check Blower Housing/Impeller

Maintenance Service Interval	Maintenance Procedure
Before each use or daily	Check the blower housing/impeller.

Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.
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

Maintenance Service Interval	Maintenance Procedure
Before each use or daily	Check bags.

Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.
Inspect the bags for wear, tears, or damage.

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.

Check bags frequently for tears and holes. Replace worn bags only with Exmark replacement bags.

Lubricate Grease Fittings

Maintenance Service Interval	Maintenance Procedure
Every 25 hours	Lubricate grease fittings.

Note: See chart for service intervals.

Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.
Lubricate fittings with NLGI grade #2 multi-purpose gun grease.

Refer to the following chart for fitting locations and lubrication schedule.

Lubrication Chart

Fitting Locations Initial Pumps Number of Places Service Interval

1. Idler Bushings 1–2 1 25 Hours

Lubrication Chart
1. Idler Bushings	1–2	1	25 Hours

Check Condition of Belt

Maintenance Service Interval	Maintenance Procedure
Every 50 hours	Check condition of belt.

Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.
Inspect the belt for damage or wear. Replace belt with one of the following:

Deck Part No.

60 inch 103-0866

72 inch 103-0867

Cleaning

Cleaning and Storing Safety

Park machine on level ground, disengage drives, set parking brake, stop engine, and remove key. Wait for all moving parts to stop before leaving the operator’s position. Allow the machine to cool before servicing, adjusting, fueling, unclogging, cleaning, or storing.
Clean grass and debris from the cutting unit, muffler, drives, grass catcher, and engine compartment to prevent fires.
Allow the machine to cool before storing the machine in any enclosure. Do Not store the machine or fuel container, or refuel, where there is an open flame, spark, or pilot light such as on a water heater or other appliance.

Clean Muffler and Rear Frame Area

Maintenance Service Interval	Maintenance Procedure
Before each use or daily	Clean muffler and rear frame area.

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 Hood Screen on Mower

Maintenance Service Interval	Maintenance Procedure
Before each use or daily	Clean hood screen on mower.

Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.
Clean off any debris or grass build-up from the mower hood screen.

Clean Rear Screen In Hood Assembly

Maintenance Service Interval	Maintenance Procedure
Before each use or daily	Clean rear screen in the hood assembly.

Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.
Open hood and remove clippings that are stuck to the screen.

Clean Blower

Maintenance Service Interval	Maintenance Procedure
Yearly or before storage	Clean blower.

Grass build up may cause problems with the impeller when the unit is put back into operation.

Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.
Remove grass buildup from around the impeller before placing it in storage.

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	Possible Cause	Corrective Action
Abnormal vibration.	Cutting blade(s) is/are bent or unbalanced. Blade mounting bolt is loose. Loose blower pulley or pulley assembly. Blower impeller blades are bent.	Install new cutting blade(s). Tighten the blade mounting bolt. Tighten the appropriate pulley. Contact an Authorized Service Dealer.
Blower drive belt snaps or breaks frequently.	Idler arm is out of alignment.	Correct the alignment of the idler arm.
Excessive grass blowout from the deck.	Bags are full. Plugged screen in hood assembly. Ground speed is too fast. Blower belt is worn, loose, or broken. Plugged tube or blower. Conditions are dry.	Empty bags more frequently. Remove debris, leaves or grass clippings from the screen. Drive slower at full throttle. Install new blower belt. Locate and remove plugged debris. Use lower lift blade.
Blower and tubes plug too frequently.	Bags are too full. Ground speed is too fast. Grass is too wet. Grass is too long. Plugged screen in hood assembly. Blower drive belt is worn, loose, or broken. Blower is plugged.	Empty bags more frequently Drive slower at full throttle. Cut grass when it is dry. Cut grass more frequently or at higher cut height. Remove debris, leaves, or grass clippings from the screen. Install new belt. Use low lift blades in wet conditions.
Blower impeller does not spin freely.	Plugged blower. Impeller not aligned.	Remove debris, leaves, or grass clippings from the blower impeller. Contact an Authorized Service Dealer.
Plowing leaves.	Deck is too low.	Raise the deck slightly.
Chasing leaves.	Blowout from deck. Bags are full.	Check for clogged tubes. Empty bags more frequently.
Blower components show signs of wear and/or air cleaners and cooling fins are dirty.	Sand or dry conditions.	Use low lift blades on the cutting deck and higher cutting heights.Clean air cleaners and cooling fins frequently.

Lubrication Chart
Fitting Locations	Initial Pumps	Number of Places	Service Interval
1. Idler Bushings	1–2	1	25 Hours

Deck	Part No.
60 inch	103-0866
72 inch	103-0867

UltraVac® Collection System

126-8680

Introduction

Warning

Safety

Safety Alert Symbol

General Safety Information

Safety and Instructional Decals

Specifications

Systems

Bagging System

Dimensions

Overall Width:

Overall Length:

Curb Weight:

Torque Requirements

Product Overview

Operation

Before Operation

Before Operation Safety

Operating Instructions

During Operation Safety

General Safety

Danger

Warning

Mowing

Collection System Removal for Side Discharge

Caution

Caution

Warning

Warning

Collection System Installation

After Operation

General Safety

Maintenance

Maintenance Safety

Warning

Warning

Warning

Recommended Maintenance Schedule(s)

Periodic Maintenance

Check Blower Housing/Impeller

Check Bags

Warning

Lubricate Grease Fittings

Check Condition of Belt

Cleaning

Cleaning and Storing Safety

Clean Muffler and Rear Frame Area

Warning

Clean Hood Screen on Mower

Clean Rear Screen In Hood Assembly

Clean Blower

Troubleshooting