LAZER Z MODELS ® For Serial Nos. 790,000 & Higher Part No. 4500-507 Rev.
WARNING CALIFORNIA Proposition 65 Warning The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Important: When the mower is used or operated on any California forest, brush or grass covered land, a working spark arrester must be attached to the muffler. If not, the operator is violating state law, Section 4442 Public Resource Code. To acquire a spark arrester for your unit, see your Engine Service Dealer.
Introduction CONGRATULATIONS on the purchase of your Exmark Mower. 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 mower. BEFORE OPERATING YOUR MOWER, CAREFULLY READ THIS MANUAL IN ITS ENTIRETY.
Contents Electric Clutch Adjustment............................ 40 Motion Control Linkage Adjustment ............. 40 Motion Control Damper Adjustment............. 41 Motion Control Neutral Lock Pivot Adjustment ............................................... 42 Motion Control Handle Adjustment .............. 42 Motion Control Full Forward Tracking Adjustment ............................................... 42 Caster Pivot Bearings Pre-Load Adjustment ...............................................
Safety Safety • Never let children or untrained people operate or service the equipment. Local regulations may restrict the age of the operator. Safety Alert Symbol • The owner/user can prevent and is responsible for accidents or injuries occurring to himself or herself, other people or property.
Safety DANGER DANGER In certain conditions gasoline is extremely flammable and vapors are explosive. A fire or explosion from gasoline can burn you, others, and cause property damage. In certain conditions during fueling, static electricity can be released causing a spark which can ignite gasoline vapors. A fire or explosion from gasoline can burn you and others and cause property damage. • Fill the fuel tank outdoors in an open area, when the engine is cold. Wipe up any gasoline that spills.
Safety • Never operate the mower with damaged guards, shields, or covers. Always have safety shields, guards, switches and other devices in place and in proper working condition. • 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. • Do Not change the engine governor setting or overspeed the engine.
Safety • Be aware of the mower discharge path and direct discharge away from others. • Do Not operate the mower under the influence of alcohol or drugs. • Use extreme care when loading or unloading the machine into a trailer or truck. • Use care when approaching blind corners, shrubs, trees, or other objects that may obscure vision. Slope Operation Figure 3 Use Extreme caution when mowing and/or turning on slopes as loss of traction and/or tip-over could occur.
Safety • Disconnect battery or remove spark plug wire before making any repairs. Disconnect the negative terminal first and the positive last. Reconnect positive first and negative last. WARNING There is no rollover protection when the roll bar is down. Wheels dropping over edges, ditches, steep banks, or water can cause rollovers, which may result in serious injury, death or drowning. • Use care when checking blades. Wrap the blade(s) or wear gloves, and use caution when servicing them.
Safety WARNING Hydraulic fluid escaping under pressure can penetrate skin and cause injury. Fluid accidentally injected into the skin must be surgically removed within a few hours by a doctor familiar with this form of injury or gangrene may result. • If equipped, make sure all hydraulic fluid hoses and lines are in good condition and all hydraulic connections and fittings are tight before applying pressure to hydraulic system.
Safety 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.
Safety 109-3148 109-7232 1. Fast 2. Slow 3. Neutral 4.
Safety 116-0090 109-8483 1. Throttle–fast 2. Throttle–slow 3. Choke–on 4. Choke–off 116-0157 1.
Safety 117–2718 116-0211 Message Display 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Hour meter PTO Parking brake Neutral Operator presence switch PTO Switch Symbols 116-0752 1. Latch Fuel Empty Half Full Battery 1. PTO–disengage 2. Unlatch 109-7069 14 2.
Specifications Specifications Model Numbers Serial Nos: 790,000 and Higher LZZ23KC486; LZZ23KA526; LZZ23KC526; LZZ27KC526; LZZ27KC606; LZZ29KA606; LZZ34KA606; LZZ34KA726 Systems • • • • Engine • Engine Specifications: See your Engine Owner’s Manual • RPM: – All units except LZZ23KC486: Full Speed: 3750 ±50 RPM (PTO not engaged) Idle: 1500 ±100 RPM – LZZ23KC486: Full Speed: 3750 +0/-50 RPM (PTO not engaged) Idle: 1500 ±100 RPM – All other engines: 260 CCA Battery Voltage: 12 Volt Low Voltage Light — RH c
Specifications – Moving motion control levers outward (in slots) locks the drive system in neutral. – Suspension seat: molded adjustable flip-up armrests. • Seat Safety Switch: • PTO Engagement Switch: Engages electric clutch (to drive belt) which engages mower blades. Integrated seat switch. Time delay seat switch eliminates rough ground cut-outs. • Parking Brake Lever: Engages parking brake. • Parking Brake Release Button: Releases parking brake.
Specifications Dimensions Cutting Deck • Cutting Width: Overall Width: – 48 inch Deck: (121.9 cm) – 52 inch Deck: (132.1 cm) 48 inch Deck 52 inch Deck Without Deck 45.7 inches (116.1 cm) 45.7 inches (116.1 cm) Deflector Up 51.8 inches (131.6 cm) 56.3 inches (143.0 cm) Deflector Down – 48 inch Deck: 16.25 inches (41.3 cm) 59.6 inches (151.4 cm) 64.8 inches (164.6 cm) – 52 inch Deck: 18.00 inches (45.7 cm) 60 inch Deck 72 inch Deck Without Deck 53.0 inches (134.6 cm) 59.1 inches (150.
Specifications Accessory Weight Table Worksheet: Tread Width: (Center to Center of Tires, Widthwise) 48 inch Deck 52 inch Deck Drive Wheels 36.2 inches (91.9 cm) 36.2 inches (91.9 cm) Caster Wheels 32.8 inches (83.3 cm) 32.8 inches (83.3 cm) 60 inch Deck 72 inch Deck Drive Wheels 41.6 inches (105.7 cm) 43.6 inches (110.7 cm) Caster Wheels 39.5 inches (100.3 cm) 47.1 inches (119.6 cm) Use the table below to determine if extra weight is required for the unit.
Product Overview Product Overview *60 inch units which already have an under toe board mount weight as standard requires 116-1238 front toe board top mount kit instead of 116-1173.
Operation Operation The choke is used to aid in starting a cold engine. Moving the choke lever forward will put the choke in the “ON” position and moving the choke lever to the rear, to the detent, will put the choke in the “OFF” position. Do Not run a warm engine with choke in the “ON” position. Note: Determine the left and right sides of the machine from the normal operating position.
Operation Figure 7 1. Release button 2. Park brake The unit must be tied down and brake engaged when transporting. Figure 9 1. 2. 3. 4. 5. Ignition Switch Located on right console (see Figure 6). The ignition switch is used to start and stop the engine. The switch has three positions “OFF”, “ON” and “START”. Insert key into switch and rotate clockwise to the “ON” position. Rotate clockwise to the next position to engage the starter (key must be held against spring pressure in this position).
Operation Note: The handle must be horizontal and against the stop for operation. The fuel level is shown on a bar display. The indicator light appears when the fuel level is low (approximately one gallon remaining in the tank). Do Not tow machine. Drive Wheel Release Valves PTO Engagement Switch WARNING Located on right console (see Figure 6). Switch must be pulled out (up) to engage the blades. Switch is pushed in to disengage the blades.
Operation 4. To return to the operate position, raise the roll bar, and then rotate knobs 90° so that the tabs interlock partially. Apply forward pressure to the roll bar upper hoop and observe that the knobs return to the completely latched position. Figure 11 1. Latching position 2. Transport lock control 3. Non-latching position Pre-Start Fill fuel tank. For best results use only clean, fresh regular grade unleaded gasoline with an octane rating of 87 or higher. Do Not add oil to gasoline.
Operation Open the Fuel Shut-Off Valve DANGER The fuel shut off valve is located behind and below the seat. Rotate the valve and align with the fuel line to open. An uncovered discharge opening will allow objects to be thrown in an operator’s or bystander’s direction. Also, contact with the blade could occur. Thrown objects or blade contact can cause serious injury or death. Starting the Engine 1. Move the motion control levers out to the neutral lock position.
Operation Driving the Machine Driving Forward 1. Release the parking brake. 2. Move the motion control levers inward to the center to the neutral position. 3. To move forward in a straight line, move both levers forward with equal pressure. CAUTION Machine can spin very rapidly by positioning one lever too much ahead of the other. Operator may lose control of the machine, which may cause damage to the machine or injury.
Operation 4. Raise and lock the deck to the 5 1/2 inch (14 cm) transport position (Figure 16). The deck is raised by pushing the foot operated deck lift pedal forward. The pedal is located at the front right corner of the floor pan. Note: When changing the cutting height positions, always come to a complete stop and disengage the PTO. Figure 17 For cutting heights above 3.5 inches (90 mm) use the bottom hole. The rollers will still be effective against scalping. 1.
Operation 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. fasten the machine to the trailer or truck with straps, chains, cable, or ropes.
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.
Maintenance Maintenance Service Interval Every 500 hours Maintenance Procedure • • • • Change the hydraulic filter and fluid. Check the wheel hub slotted nut torque specifications. Check the wheel lug nuts. Check the park brake adjustment. • Grease the deck and pump idler pivots. • Grease the front caster pivots. Yearly Periodic Maintenance battery performance and life, recharge batteries in storage when the open circuit voltage drops to 12.4 volts.
Maintenance Check Mower Blades C. Apply lubricant to threads of blade bolt to prevent seizing. Copper-based anti-seize preferable. Grease acceptable substitute. Install blade bolt finger tight. Place wrench on the top spindle nut then torque the blade bolts to 55-60 ft-lb (75-81 N-m). Service Interval: Before each use or daily 1. Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake. 2.
Maintenance second has elapsed (seat has time delay kill switch to prevent cut-outs on rough terrain). Run engine at one-third throttle, engage PTO and raise off of seat (but do not get off of machine) engine must initiate shutdown after one second has elapsed if the handles are in. The delay will be 1/2 second if the handles are out.
Maintenance 4. Check the condition of the inner element. Replace whenever it appears dirty, typically every other time the paper element is replaced. Clean the base around the inner element before removing, so dirt does not get into the engine. 5. Do Not wash or use pressurized air to clean paper element or inner element. 6. Reinstall elements. Position the cover so that the rubber dust ejector is pointing downward and secure with retaining clips. 3.
Maintenance Check Condition Of Belts pump with grease until it oozes out around top bearing. Remove grease zerk and thread plug back in. Place cap back on. Service Interval: Every 50 hours 1. Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake. 2. Remove left and right belt shields on deck and lift up floor pan to inspect deck drive belt. 3. Check under machine to inspect the pump drive belt. Lubricate Caster Wheel Hubs Service Interval: As required 1.
Maintenance Change Fuel Filter 9. Insert the assembled nut and axle into the wheel on the side of the wheel with the new seal and bearing. 10. With the open end of the wheel facing up, fill the area inside the wheel around the axle full of NGLI grade #1 multi-purpose grease. 11. Insert the second bearing and new seal into the wheel. 12. Apply a thread locking adhesive to the 2nd spacer nut and thread onto the axle with the wrench flats facing outward. 13.
Maintenance 7. Before installing the new filters, apply a thin coat of Exmark Premium Hydro oil on the surface of the two rubber seals. 8. Install the new filters and torque to 14 ft-lb (19 N-m). 9. Fill the hydraulic system as stated in Check Hydraulic Oil Level section. Exmark Premium Hydro Oil is recommended. Refer to the chart for an acceptable alternative: Hydro Oil Change Interval Exmark Premium Hydro Oil (Preferred) 500 Hours Mobil 1 15W50 250 Hours Figure 24 1. 0.1 inch max 10.
Maintenance Adjustments 3. If any breaks in the screen or welds are observed, replace arrester. Note: Disengage PTO, shut off engine, wait for all moving parts to stop, engage parking brake, and remove key before servicing, cleaning, or making any adjustments to the unit. 4. If plugging of the screen is observed, remove arrester and shake loose particles out of the arrester and clean screen with a wire brush (soak in solvent if necessary). Reinstall arrester on exhaust outlet.
Maintenance 10. Loosen the jam nuts on the top of each deck link. Fine tune the adjuster on the front deck lift assembly by turning it to get 3 inch (7.6 mm) height (see Figure 27). To increase the height, turn the adjuster clockwise; to decrease, turn counterclockwise. Figure 25 1. Foot lever 2. Cut of height pin 3. Transport lock 6. Insert the height adjustment pin into the 3 inch (7.6 cm) cutting height location. 7. Release the transport lock and allow the deck to lower to the cutting height.
Maintenance Deck Removal Before servicing or removing the deck, the spring loaded deck arms must be locked out. WARNING Deck lift arm assemblies have stored energy. Removing the deck with out releasing the stored energy can cause serious injury or death. Do Not attempt to disassemble the deck from the front frame without locking out the stored energy. Figure 28 1. Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake. 1. Single point height adjustment bolt 2.
Maintenance 7. Raise the front of the machine and slide the deck left or right to remove. 8. Lower the front of the machine. 9. Hold the threaded rod end with a tool and loosen the lock nut away from the standard nut (see Figure 30). Do Not allow the cable to turn when the nuts are being loosened. Pump Drive Belt Tension Self-tensioning - No adjustment necessary. Deck Belt Tension Self-tensioning - No adjustment necessary.
Maintenance valves must be in the “released” position on the hydros). WARNING Engine must be running and drive wheels must be turning so park brake adjustment can be performed. Contact with moving parts or hot surfaces may cause personal injury. 13. If the hub moves very freely relative to the caliper, then tighten the standard nut one turn against the swivel and repeat step 11. 14. Once step 11 is achieved, hold the threaded rod end with a tool and tighten the lock nut against the standard nut.
Maintenance neutral. Any adjustments should be made for neutral positioning only. WARNING Engine must be running and drive wheels must be turning so motion control adjustment can be performed. Contact with moving parts or hot surfaces may cause personal injury. Figure 32 Keep fingers, hands, and clothing clear of rotating components and hot surfaces. 1. Double nuts 2. Raise the rear of machine up and support with jack stands (or equivalent support) just high enough to allow drive wheels to turn freely.
Maintenance Motion Control Neutral Lock Pivot Adjustment The flanged nut can be adjusted to obtain a more desired motion control lever resistance (Figure 34). Figure 35 1. Bolts 2. Control lever 3. Control arm shaft Figure 34 1. Flanged nut 2. Jam nut 4. Nuts 5. Slotted holes 2. Move the control lever to the next set of holes. Secure the lever with the two bolts. 1. Loosen the jam nut. 3. Repeat the adjustment for the opposite control lever. 2. Tighten or loosen the flanged nut to the desired feel.
Maintenance brake has worn to the point where the clutch no longer engages consistently, the shim can be removed to extend the clutch life. Figure 36 RH Motion Control Shown 3. Motion control lever 1. Screw 2. Cover plate Figure 38 1. 2. 3. 4. Caster Pivot Bearings Pre-Load Adjustment Remove dust cap from caster and tighten nyloc nut until washers are flat and back off 1/4 of a turn to properly set the pre-load on the bearings.
Maintenance E. Using a 0.010 inch thick feeler gauge, verify that a gap is present between the rotor and armature face on both sides of the brake pole as shown. (Due to the way the rotor and armature faces wear (peaks and valleys) it is sometimes difficult to measure the true gap.) 4. Verify that 12V is present at the clutch connector when the PTO switch is engaged. 5. Measure the gap between the rotor and armature. If the gap is greater than .04 inch (1 mm), proceed with the following steps: A.
Maintenance Clean Hydro Fan Cooling Guards Cleaning Clean Engine and Exhaust System Area Service Interval: Before each use or daily Removing debris from the hydro fan cooling guards will allow the hydro system to run cooler and improve the life of the hydro system. Service Interval: Before each use or daily (May be required more often in dry or dirty conditions.) 1. Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake. 2.
Maintenance Waste Disposal CAUTION Raising the mower deck for service or maintenance relying solely on mechanical or hydraulic jacks could be dangerous. The mechanical or hydraulic jacks may not be enough support or may malfunction allowing the unit to fall, which could cause injury. Motor Oil Disposal Engine oil and hydraulic oil are both pollutants to the environment. Dispose of used oil at a certified recycling center or according to your state and local regulations.
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 of adjustment procedures (such as valves, governor, etc.).
Troubleshooting Problem Engine loses power Possible Cause Corrective Action 1. Engine load is excessive 1. Reduce the ground speed. 2. Air cleaner is dirty. 3. Oil level in the crankcase is low. 4. Cooling fins and air passages for the engine are plugged. 5. Dirt in fuel filter. 6. Dirt, water, or stale fuel is in the fuel system. 2. Clean or replace the air cleaner element. 3. Add oil to the crankcase. 4. Remove the obstructions from the cooling fins and air passages. 5. Replace the fuel filter. 6.
Troubleshooting Problem Clutch will not engage. Possible Cause Corrective Action 1. Fuse is blown. 1. Replace fuse. Check coil resistance, battery charge, charging system, and wiring connections and replace if necessary. 2. Low voltage supply at the clutch. 2. Check coil resistance, battery charge, charging system, and wiring connections and replace if necessary. 3. Replace clutch. 4. Repair or replace clutch lead wire or electrical system. Clean connector contacts. 5. Remove shim or replace clutch.
RECTIFIER START TERMINAL R TERMINAL S 50 NONE B+R+I+A B+R+I+S 2. RUN 3. START CIRCUIT "MAKE" TERMINAL S TERMINAL B TERMINAL R TERMINAL A 1. OFF POSITION IGNITION TERMINAL I TERMINAL I BATTERY TERMINAL B CONNECTIONS ACCESSORY TERMINAL A TERMINAL IGNITION SWITCH B A 2 1 2 1 2 1 2 1 1 2 1 2 B A PINK LT.
A BK BK - GND S B BU SW2 (PTO SWITCH) C FUEL SENDER PK + 2 BK BN BN 3 5 BN 8 F3 B PK 1 BN V 4 A PTO CLUTCH 4 10A BK BN 7 U2 TVS DIODE 5 SW5 BK 8 3 (NEUT_L) SW4 (NEUT_R) PTO PK ACCESSORIES FUEL GROUND PK 6 2 Y LTGR PK BRAKE 4 W 7 9 (BRAKE) SW6 GND 15A F4 HOUR METER 11 BK 8 10 T PK 7 1 12 OR B+ KEY_S GN (SEAT) SW7 BN PK OR GY R R OR PK 5 I SW1 (IGNITION) 2 B GN GY GY 1 S V 3 R PK 4 OPTIONAL NEUTRAL FUEL_SOLENOID SEAT
Schematics Hydraulic Diagram 52
Exmark Lazer Z and Lazer Z AS Turf Equipment 3 Year Limited Commercial Warranty 5 Year or 750 Hours Limited Consumer Warranty General Warranty Conditions and Products Covered 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.
SEE EXMARK’S COMPLETE LINE OF ACCESSORIES AND OPTIONS MID-MOUNT RIDING ACCESSORIES AND OPTIONS CUSTOM RIDE SEAT SUSPENSION SYSTEM OPERATOR CONTROLLED DISCHARGE FULL SUSPENSION SEAT ROLL OVER PROTECTION SYSTEM (ROPS) DECK LIFT ASSIST KIT SUN SHADE HITCH KIT TRASH CONTAINER LIGHT KIT TURF STRIPER 12V POWER PORT ULTRA VAC COLLECTION SYSTEM MICRO-MULCH SYSTEM ULTRA VAC QUICK DISPOSAL SYSTEM OUT-FRONT RIDING ACCESSORIES AND OPTIONS CUSTOM RIDE SEAT SUSPENSION SYSTEM SNOW BLADE DUAL-TAIL WHEEL SN
