Exmark LAZER Z Operator's Manual
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Exmark LAZER Z Operator's Manual

Air-cooled models
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AIR-COOLED MODELS
Place Model No. and Serial No.
Label Here (Included in the Literature
Pack) or Fill in Below
Model No.
Serial No.
LAZER Z
Date Purchased
Engine Model No. and Spec. No.
Engine Serial No. (E/No)
For Serial Nos.
720,000 & Higher
®
Part No. 4500-264 Rev. A

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Summary of Contents for Exmark LAZER Z

  • Page 1 For Serial Nos. 720,000 & Higher LAZER Z ® AIR-COOLED MODELS Place Model No. and Serial No. Date Purchased Label Here (Included in the Literature Pack) or Fill in Below Engine Model No. and Spec. No. Model No. Engine Serial No. (E/No) Serial No.
  • Page 2 Replacements may be ordered through the engine manufacturer. 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.

  • Page 4: Introduction

    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.

  • Page 5: Table Of Contents

    Contents Mobil HTS Grease (Or Food-Grade Anti-seize)..........37 Copper-Based Anti-seize ......37 Introduction ............4 Dielectric Grease........... 37 Safety ..............6 Adjustments ............. 38 Safety Alert Symbol ......... 6 Deck Leveling ..........38 Safe Operating Practices ........6 Pump Drive Belt Tension....... 38 Safety and Instructional Decals .....

  • Page 6: Safety

    • Evaluate the terrain to determine what accessories ALERT! YOUR SAFETY IS INVOLVED! and attachments are needed to properly and safely perform the job. Only use accessories and attachments approved by Exmark. • Wear appropriate clothing including safety glasses, Figure 2 substantial footwear, long trousers, and hearing 1.
  • Page 7 Safety DANGER DANGER In certain conditions gasoline is extremely In certain conditions during fueling, static flammable and vapors are explosive. electricity can be released causing a spark which can ignite gasoline vapors. A fire or A fire or explosion from gasoline can burn explosion from gasoline can burn you and you, others, and cause property damage.
  • Page 8 Safety Operation damage and make repairs before restarting and operating the mower). WARNING – Before clearing blockages. – Whenever you leave the mower. Operating engine parts, especially the muffler, become extremely hot. Severe burns • Stop engine, wait for all moving parts to stop, and can occur on contact and debris, such as engage parking brake: leaves, grass, brush, etc.
  • Page 9 Safety • Watch for ditches, holes, rocks, dips and rises that DANGER change the operating angle, as rough terrain could overturn the machine. Operating on wet grass or steep slopes can cause sliding and loss of control. Wheels • Avoid sudden starts when mowing uphill because dropping over edges, ditches, steep banks, or the mower may tip backwards.

  • Page 10: Maintenance And Storage

    Safety Maintenance and Storage WARNING • Disengage drives, lower implement, set parking Hydraulic fluid escaping under pressure brake, stop engine and remove key or disconnect can penetrate skin and cause injury. Fluid spark plug wire. Wait for all movement to stop accidentally injected into the skin must be before adjusting, cleaning or repairing.

  • Page 11: Safety And Instructional Decals

    Exmark equipment dealer or labels. distributor or from Exmark Mfg. Co. Inc. • Replace all worn, damaged, or missing safety • Safety signs may be affixed by peeling off the signs.
  • Page 12 Safety 103–2750 Kohler EFI Units Only 1–643339 103–3270 98-5954 103–0261 Kohler EFI Units Only 103–3679 Kohler EFI Units Only 103-1798 All Units Except Kohler EFI 103–4474 All Units Except Kohler EFI...
  • Page 13 Safety 103-4930 All Units Except Kohler EFI 103–6319 103–5456 103-6700 Kohler EFI Units 103-5881...
  • Page 14 Safety 109-0872 109-1214 107-2102 109-1215 107-2112...
  • Page 15 Safety 109-2219 109-1399 109-3148 109–7949 103–9255...

  • Page 16: Specifications

    – 28HP Kohler EFI : motion control levers out (neutral lock) to start engine. (It is not necessary for the operator to be In-line 22 Micron Exmark P/N 99–9403 (low in the seat to start the engine.) pressure). • Operator must be in seat when PTO is engaged,...

  • Page 17: Hydrostatic Ground Drive System

    Specifications • PTO Engagement Switch: Engages electric clutch – Briggs & Stratton and 28HP Kohler EFI (to drive belt) which engages mower blades. Units: • Parking Brake Lever: Engages parking brake. Integral Seat Switch. Time delay seat switch eliminates rough ground cut-outs. •...

  • Page 18: Dimensions

    Specifications Tires & Wheels An extra-long cushioned lever is used to adjust the cutting height from 1 inch (2.5 cm) to 5 inches Drive Front Caster (12.7 cm) in 1/4 inch (6.4 mm) increments. The Pneumatic Semi-Pneumatic cutting height adjustment handle has a transport (Air-Filled) position and all adjustments can be made while the operator remains seated.

  • Page 19: Torque Requirements

    Specifications Wheel Base: (Center of Caster Tire to Bolt Location Torque Center of Drive Tire) Wheel Hub Slotted Nut minimum 125 ft-lb (169 N-m) 60 inch Deck 66 inch Deck 72 inch Deck Rollover Protection System 30-35 ft-lb (41-47 N-m) 53.7 inches 55.3 inches 59.1 inches...

  • Page 20: Product Overview

    Operation Product Overview Operation Note: Determine the left and right sides of the machine from the normal operating position. Controls Motion Control Levers The motion control levers located on each side of the console control the forward and reverse motion of the machine.

  • Page 21: Ignition Switch

    Operation Push the lever forward and down to disengage the Rotate the valve 1/4 turn clockwise to shut off brake. fuel. Rotate the valve 1/4 turn counterclockwise to turn on fuel. The unit must be tied down and brake engaged when •...

  • Page 22: Pre-Start

    Operation Electronic Control Unit Malfunction Indicator Kohler EFI Units Only: The electronic control unit (ECU) continuously monitors operation of the EFI system. If a problem or fault within the system is detected, the malfunction indicator light (MIL) is illuminated. The MIL is the red light located on the right fuel tank to the right of the hour meter.

  • Page 23: Stopping The Engine

    Operation Stopping the Engine Important: Do Not crank the engine continuously for more than ten seconds at a 1. Bring the unit to a full stop. time. If the engine does not start, allow a 60 2. Disengage the PTO. second cool-down period between starting attempts.

  • Page 24: Adjusting The Cutting Height

    Operation Figure 6 1. Handles Out (Neutral 5. Neutral Lock) 2. Handles In (Neutral) 6. Reverse 3. Front of Unit 7. Neutral Lock 4. Forward Figure 7 Driving Forward 1. Handles Out (Neutral 4. Forward Lock) 1. Release the parking brake. 2.
  • Page 25 Operation deck lift assist lever located at the front right 6. Place the rollers in one of the positions shown corner of the floor pan. (Figure 9). Rollers will maintain 3/4 inch (19 mm) clearance to the ground to minimize gouging and Note: When changing the cutting height roller wear or damage.

  • Page 26: Transporting

    Operation 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. • 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.
  • Page 27 Operation 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.

  • Page 28: Maintenance

    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 The engine can become very hot. Touching made, someone could start the engine. a hot engine can cause severe burns. Accidental starting of the engine could Allow the engine to cool completely before seriously injure you or other bystanders.

  • Page 29: Periodic Maintenance

    Maintenance Maintenance Service Maintenance Procedure Interval • Lubricate the brake handle pivot. • Lubricate the brake rod bushings. • Lubricate the motion control bronze bushings. Every 160 hours • Lubricate the seat switch actuator. (N/A 31HP Briggs & Stratton and 28HP Kohler EFI Units) •...

  • Page 30: Check Mower Blades

    A. Install bushing through blade with bushing serious personal injury or death. flange on bottom (grass) side of blade. Always install the original Exmark blades, blade bushings, and blade bolts as shown. Check Safety Interlock System...

  • Page 31: Check Rollover Protections Systems (Roll Bar) Pins

    Note: If machine does not pass any of these tests, 3. Loosen retaining clips and remove air cleaner do not operate. Contact your authorized EXMARK compartment cover. SERVICE DEALER. 4. Remove paper element. Check the condition Important: It is essential that operator safety of the paper element.

  • Page 32: Change Engine Oil

    Maintenance 6. Do Not wash or use pressurized air to clean temperature of the oil. The “HOT” level shows paper element or inner element. the level of oil when it is at 225°F (107°C). The “COLD” level shows the level of the oil when 7.

  • Page 33: Check Spark Arrester (Kohler Efi Engines Only)

    Maintenance Check Spark Arrester (Kohler Lubrication Chart EFI engines only) Fitting Initial Number of Service Locations Pumps Places Interval Service Interval: Every 50 hours 3. Height 40 Hours Adjustment WARNING Shaft Bearings Hot exhaust system components may ignite 4. Deck Yearly gasoline vapors even after the engine is Drive Belt...

  • Page 34: Lubricate Caster Wheel Hubs

    Lubricate Brake Rod multi-purpose grease. 7. Insert one bearing, one new seal into the wheel. Bushings Note: Seals (Exmark P/N 103-0063) must be Service Interval: Every 160 hours replaced. 1. Stop engine, wait for all moving parts to stop, and 8.

  • Page 35: Lubricate Motion Control Bronze Bushings

    Note: For Kohler EFI units use only high pressure clamps and SAE R7 or R9 hose available from Bronze Bushings Exmark or Kohler. Clamps require special pliers P/N 1-643394 (Oetiker P/N 14100118 or Kohler P/N Service Interval: Every 160 hours 2445505) for installation.

  • Page 36: Change Hydraulic System Filter

    Change Hydraulic System Filter Service Interval: After the first 250 hours Yearly thereafter Note: Use only Exmark Part No. 109–4180 for summer use above 32°F (0°C) or Part No. 1–523541 for winter use below 32°F (0°C). Figure 14 1. Stop engine, wait for all moving parts to stop, and For Kohler EFI Units Route the fuel line hoses as shown.

  • Page 37: Wheel Hub - Slotted Nut Torque Specification

    Maintenance Wheel Hub - Slotted Nut Fuel tank studs, where studs are inserted into tank. Torque Specification Mobil HTS Grease (Or Service Interval: After the first 100 hours Food-Grade Anti-seize) Every 500 hours thereafter Mobil HTS grease (or food-grade anti-seize) is used When tightening the slotted nut on the wheel motor in the following locations: tapered shaft:...

  • Page 38: Adjustments

    Maintenance Adjustments front swivel using locking nut in front of swivel. Repeat for right side. Note: Disengage PTO, shut off engine, wait for 11. Recheck that the 3/4 inch (19 mm) blocks fit just all moving parts to stop, engage parking brake, and snugly under the brackets and that the tension on remove key before servicing, cleaning, or making any all the chains is approximately equal.

  • Page 39: Deck Belt Tension

    Maintenance side engine deck support, is positioned between the centers of the two alignment holes in the left support plate (Figure 16 and Figure 17). It is necessary to adjust the belt tension when the center of the bolt head is at or below the center of the bottom alignment hole.

  • Page 40: Brake Link Adjustment

    Maintenance Brake Link Adjustment between the spring retainer bracket and the adjacent nyloc nut. Tighten the jam nut above Check to make sure brake is adjusted properly. the trunnion roller. 1. Disengage brake lever (lever down). 4. If adjustment is necessary, loosen the nut directly below the yoke.

  • Page 41: Motion Control Linkage Adjustment

    Maintenance 1. This adjustment must be made with the drive wheels turning. First raise the frame and block up so that drive wheels can rotate freely. 2. Remove the electrical connection from the seat safety switch, located directly to the left of the seat switch assembly beside the hydraulic oil reservoir.

  • Page 42: Motion Control Damper Adjustment

    Maintenance creep in reverse (Figure 21). Move the motion control lever to the reverse position and while applying slight pressure to the lever allow the reverse indicator spring to bring the levers back to neutral. The wheel must stop turning or slightly creep in reverse.

  • Page 43: Caster Pivot Bearings Pre-Load Adjustment

    Maintenance Caster Pivot Bearings Cleaning Pre-Load Adjustment Clean Engine Cooling Remove dust cap from caster and tighten nyloc nut System until washers are flat and back off 1/4 of a turn to properly set the pre-load on the bearings. If Service Interval: Before each use or daily disassembled, make sure the spring disc washers are (May be required more...

  • Page 44: Remove Engine Shrouds And Clean Cooling Fins (Kohler Units Only)

    Maintenance Remove Engine Shrouds and recycling center or according to your state and local regulations. Clean Cooling Fins (Kohler Units Only) Battery Disposal Service Interval: Every 80 hours DANGER 1. Stop engine, wait for all moving parts to stop, and remove key.

  • Page 45: Troubleshooting

    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.
  • Page 46 Troubleshooting Problem Possible Cause Corrective Action Engine overheats 1. Engine load is excessive 1. Reduce the ground speed. 2. Oil level in the crankcase is low. 2. Add oil to the crankcase. 3. Cooling fins and air passages for the 3.

  • Page 47: Schematics

    Schematics Schematics Electrical Diagram —27HP Kohler GREEN GREEN STRIPE GREEN/WHITE WHITE BLACK BLACK BLACK BLACK BLACK BLACK GREEN GREEN BLACK STRIPE ORANGE/BLACK GREY STRIPE GREEN/WHITE YELLOW BLUE BROWN GREEN GREEN STRIPE PINK/BLACK BLUE BROWN BLUE BLUE BLUE GREEN BLACK GREEN GREY GREEN BLUE...
  • Page 48 Schematics Electrical Diagram – 28HP Kawasaki...
  • Page 49 Schematics Electrical Diagram – 28HP Kohler EFI DARK GREEN ORANGE/BLACK BLACK BLACK BLACK YELLOW VIOLET DARK GREEN DARK GREEN BLACK BLACK BLACK BLACK BLACK GREY BLACK LIGHT BLUE DARK GREEN BROWN DARK GREEN VIOLET LIGHT BLUE LIGHT BLUE BROWN DARK GREEN LIGHT GREEN LIGHT BLUE LIGHT BLUE...
  • Page 50 Schematics Electrical Diagram – 31HP Briggs & Stratton GREEN PINK GREEN VIOLET BLACK BLACK BLUE GREEN GREEN STRIPE PINK/BLACK GREEN BLUE GREEN BLUE STRIPE GREEN/WHITE WHITE BLACK GREEN BLACK BLACK BLUE BLACK GREEN BROWN GREEN STRIPE ORANGE/BLACK STRIPE GREEN/WHITE YELLOW BROWN BLUE BLUE...
  • Page 51 Schematics Hydraulic Diagram – All Units Except 31HP Briggs & Stratton...
  • Page 52 Schematics Hydraulic Diagram –31HP Briggs & Stratton...
  • Page 53 No Claim of breach of warranty shall be cause for cancellation included with the product. or rescission of the contract of sale of any Exmark mower. All warranty work must be performed by an authorized Some states do not allow exclusions of incidental or...

  • Page 54: Service Record

    Service Record Date: Description of Work Done: Service Done By:...
  • Page 56 © 2004–2007 Exmark Mfg. Co., Inc. Part No. 4500-264 Rev. A Industrial Park Box 808 (402) 223-6300 Beatrice, NE 68310 Fax (402) 223–5489 All Rights Reserved Printed in the USA.

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