Lazer Z®

• Engine Specifications: See your Engine Owner’s Manual

• Engine Oil Type: Exmark 4–Cycle Premium Engine Oil

• RPM:

  • Full Speed (PTO not engaged):

    All Engines: 3700 +50/-25 RPM

  • Idle:

    • Kawasaki: 1550 ±150 RPM

    • Briggs and Stratton: 1750 ±100 RPM

• Capacity: 9.5 gal. (36 L)

• Fuel Recommendations:

  • For best results, use only clean, fresh, unleaded gasoline with an octane rating of 87 or higher ((R+M)/2 rating method).

  • Oxygenated fuel with up to 10% ethanol or 15% MTBE by volume is acceptable.

  • Do Not use ethanol blends of gasoline (such as E15 or E85) with more than 10% ethanol by volume. Performance problems and/or engine damage may result which may not be covered under warranty.

  • Do Not use gasoline containing methanol.

  • Do Not store fuel either in the fuel tank or fuel containers over the winter unless a fuel stabilizer is used.

  • Do Not add oil to gasoline.

• Fuel Filter: Replaceable In-line

• Fuel Shut-Off Valve: 1/4 turn (“ON”, “OFF”).

• Fuel gauge in left side of fuel tank.

• Charging System: Flywheel Alternator

• Charging Capacity: 15 amps

• Battery Type: BCI Group U1

• Recommended Minimum Battery CCA: 260 CCA

• Battery Voltage: 12 Volt

• Low Voltage Light/Error Message — RH control panel

• Polarity: Negative Ground

• Fuses:

  All Models:

  • 15 amp main fuse

  • 20 amp charging system fuse

• LCD indicators appear for the PTO, park brake, drive levers, and operator presence in the message display on the RH control panel.

• PTO must be disengaged, brake engaged, and motion control levers out (neutral lock) to start engine. (It is not necessary for the operator to be in the seat to start the engine.)

• Operator must be in seat when PTO is engaged, brake is disengaged, or motion control levers are moved in or engine will stop.

• Engine will stop if either the left, the right, or both levers are moved from neutral lock position while brake is engaged.

• Steering and Motion Control:

  Note: Motion control levers are adjustable to two heights.

  • Separate levers, on each side of the console, control speed and direction of travel of the respective drive wheels.

  • Steering is controlled by varying the position of the levers relative to each other.

  • Moving motion control levers outward (in slots) locks the drive system in neutral.

• PTO Engagement Switch: Engages electric clutch (to drive belt) which engages mower blades.

• Parking Brake Lever: Engages/Disengages parking brake.

• Deck Height Adjustment Lever: Sets cutting height to desired position.

• Deck Lift Pedal: Foot pedal that lifts deck.

• Transport Lock:

  • Latching position: Automatically latches at the transport position.

  • Unlatching position: Deck does not latch at the transport position.

• Deluxe suspension seat with high back, (adjustable spring suspension), armrests, and integral safety switch. Adds approximately 1/2 inch (1.3 cm) to seat height.

• Seat Safety Switch: Integrated seat switch. Time delay seat switch eliminates rough ground cut-outs.

• Two unitized Hydro-Gear 4400 hydrostatic transmissions:

• Hydraulic Oil Type: Exmark Premium Hydro Oil.

• Hydraulic Oil Capacity: 118 oz (3.5 L) per side

• Hydraulic Filter: P/N 144-6598

• Speeds:

  • 0-11 mph (17.7 km/hr) forward.

  • 0-5 mph (8.0 km/hr) reverse.

• Drive wheel release valves allow machine to be moved when engine is not running.

• Cutting Width:

  • 48 inch Deck: (121.9 cm)

  • 52 inch Deck: (132.1 cm)

  • 60 inch Deck: (152.4 cm)

• Discharge: Side Discharge

• Blade Size: (3 ea.)

  • 48 inch Deck: 24.50 inches (62.2 cm)

  • 52 inch Deck: 18.00 inches (45.7 cm)

  • 60 inch Deck: 20.50 inches (52.1 cm)

• Blade Spindles: Solid steel spindles with .984 inch (25 mm) I.D. bearings.

• Deck Drive:

  Electric clutch: “B” Section belt with self-tensioning idler.

• Deck:

  Side Discharge: Full floating deck is attached to out-front support frame. Anti-scalp rollers provide maximum turf protection. Deck design allows for bagging, mulching or side discharge.

  • 48 inch Deck: 3 anti-scalp rollers

  • 52 inch Deck: 3 anti-scalp rollers

  • 60 inch Deck: 4 anti-scalp rollers

• Deck Depth—All Deck Series: 5.5 inches (14 cm)

• Cutting Height Adjustment: Foot activated lever is used to adjust the cutting height from 1 1/2 inch (3.8 cm) to 5 1/2 inches (14 cm) in 1/4 inch (6.4 mm) increments.

• Mulching Kit: Optional.

Side Discharge Models:

Side Discharge Models:

Use the table below to determine if an extra weight kit is required for the machine when installing accessories.

The motion control levers located on each side of the console control the forward and reverse motion of the machine.

Moving the levers forward or backward turns the wheel on the same side forward or reverse respectively. Wheel speed is proportional to the amount the lever is moved.

Moving the levers outward from the center position into the T-slot locks them in the neutral position (Figure 4).

Note: When the motion control levers are in the neutral position, a LCD indicator displays on the message display.

Figure 4

1. Neutral lock position (handles out)
2. Neutral operate position (handles in)
3. Front of machine
4. Forward
5. Neutral (operate)
6. Reverse

Located on right console (black lever) (Figure 5). 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.

Figure 5

1. Ignition switch
2. PTO engagement switch
3. Throttle
4. Choke
5. Message display

Located on right console (red lever) (see Figure 5).

The throttle is used to control engine speed. Moving the throttle lever forward will increase engine speed and moving the throttle lever to the rear will decrease engine speed. Moving the throttle forward into the detent is full throttle.

Located on right side of the machine, just to the front of the RH motion control lever.

The brake lever engages a parking brake on the drive wheels.

Note: The LCD indicator appears in the message display on the RH console when the park brake is engaged (reference Figure 7).

Pull the lever up and rearward to engage the brake.

Push the lever forward and down to disengage the brake.

The machine must be tied down and brake engaged when transporting.

Located on right console.

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). Allow the key to return to the “on” position immediately after the engine starts.

Figure 6

1. Off
2. On
3. Start

Note: Brake must be engaged, motion control levers out (neutral lock position) and PTO switch disengaged to start engine. (It is not necessary for the operator to be in the seat to start the engine.)

Note: The LCD indicators appear when each control meets the “safe to start” mode (e.g. the indicator turns on when the operator is in the seat.)

Located on the right console in the message display (reference Figure 5 and Figure 7).

The hour meter records the number of hours that the engine has run.

Figure 7

1. LCD indicators
2. Low voltage indicator light
3. Hour/Voltage display

Located on right console (see Figure 5).

Pushing down on the front of the switch will put the PTO in the “ON” (engage) position. Pushing down on the back of the switch will put the PTO in the “OFF” (disengage) position.

Figure 8

1. “ON” (engage)
2. “OFF” (disengage)

Located behind and below the seat.

The fuel shut-off valve is used to shut off the fuel when the machine will not be used for a few days, during transport to and from the jobsite, and when parked inside a building.

Align valve handle with the fuel line to open. Rotate 90° to close.

Located below the LH motion control cover on the fuel tank.

The dial gauge monitors the amount of fuel in the fuel tank.

Located on the back of the unitized hydraulic drive units, below the engine deck.

During normal operating conditions, the drive wheel release valves are in the forward position. If the machine has to be pushed by hand, the valves must be in the “released” position (see Figure 9).

Figure 9

1. Handle in “operating” position
2. Rotate towards machine to release

To release the drive system, rotate the handle towards the front of the machine until it hits against the stop.

To reset the drive system, rotate the handle towards the rear of the machine until it hits against the stop.

Note: The handle must be facing rearward against the stop for operation.

Do Not tow machine.

Located on the right console in the message display

A low voltage condition (less than 12.3 volts) exists when the LCD indicator appears on the message display while the engine is running.

If the ignition key is turned to the “ON” position for a few seconds before cranking the engine, the battery voltage will display in the area where the hours are normally displayed.

Note: The indicator normally appears when the engine is off and the key switch is turned to the “ON” position.

Located at the right front corner of the floor pan.

Push the pedal forward with your foot to raise the cutting deck. Allow the pedal to move rearward to lower the cutting deck to the cut height that has been set.

Figure 10

1. Transport lock
2. Height of cut
3. Park brake
4. Deck lift pedal

Located on RH console in front of the motion control lever (reference Figure 10.

The transport latching position will automatically latch when the cutting deck is raised to the transport position using the deck lift pedal.

Pulling the transport lock handle up and rearward will release the lock and allow the deck to lower to the predetermined cut height when the pedal is lowered.

Rotate the valve and align with the fuel line to open.

1. Move the motion control levers out to the neutral lock position.

2. Pull up and back on the parking brake lever to engage the parking brake.

3. Push down on the back of the PTO switch to the “disengage” position.

   Note: It is not necessary for the operator to be in the seat to start the engine.

4. Place the throttle midway between the “SLOW” and “FAST” positions.

5. Turn ignition switch to the “START” position. Release the switch as soon as the engine starts.

   Important: Do Not crank the engine continuously for more than ten seconds at a time. If the engine does not start, allow a 60 second cool-down period between starting attempts. Failure to follow these guidelines can burn out the starter motor.

6. If the choke is in the “ON” position, gradually return choke to the “OFF” position as the engine warms up.

The PTO switch engages the cutting blades. Be sure that all persons are clear of the mower deck and discharge area before engaging PTO.

Important: Operator must be in seat before the PTO can be engaged.

1. Set the throttle midway between the “SLOW” and “FAST” positions.

2. Push down on the front of the PTO switch to engage the blades (reference Figure 8).

3. Place the throttle in the “FAST” position to begin mowing.

1. Set the throttle midway between the “SLOW” and “FAST” positions.

2. Push down on the back of the PTO switch to disengage the blades (reference Figure 8).

1. Bring the machine to a full stop.

2. Move the motion control levers out to the neutral lock position.

3. Engage the parking brake.

4. Place the throttle midway between the “SLOW” and “FAST” positions.

5. Disengage the PTO.

6. Allow the engine to run for a minimum of 15 seconds, then turn the ignition switch to the “OFF” position to stop the engine.

7. Remove the key to prevent children or other unauthorized persons from starting engine.

8. Close the fuel shut-off valve when the machine will not be in use for a few days, when transporting, or when the unit is parked inside a building.

Important: To begin movement (forward or backward) the operator must be in the seat, the brake lever must be disengaged (pushed down) before the motion control levers can be moved in or the engine will stop.

When the motion control levers are positioned fully outward (apart) in the T-slot, the drive system is in the neutral lock position (Figure 14).

Note: The “N” LCD indicator appears when both levers are in the neutral lock position.

When the motion control levers are moved directly inward (together) the drive system is in the neutral operate position.

Figure 14

1. Neutral lock position (handles out)
2. Neutral operate position (handles in)
3. Front of Unit
4. Forward
5. Neutral (operate)
6. Reverse

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.

   

   Figure 15

   To turn left or right, pull the motion control lever back toward neutral in the desired turn direction.

   The machine will move faster the farther the motion control levers are moved from the neutral position.

4. To stop, position both motion control levers in the neutral operate position.

Driving in Reverse

1. Move the motion control levers inward to the neutral operate position.

2. To move rearward in a straight line, move both levers rearward with equal pressure.

   

   Figure 16

   To turn right, release pressure on the RH motion control lever and the rear of the machine will move towards the rear and to the right.

   To turn left, release pressure on the LH motion control lever and the rear of the machine will move towards the rear and to the left.

3. To stop, position both motion control levers in the neutral operate position.

1. Stop the machine and move the motion control levers outward to the neutral locked position.

2. Disengage the PTO.

3. Position the transport lock in the latching position.

4. Raise and lock the deck to the 5 1/2 inch (14 cm) transport position (Figure 17).

   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

   1. Transport lock
   2. Height of cut
   3. Park brake
   4. Deck lift pedal

5. Insert the height adjustment pin into the hole corresponding to the desired cutting height.

   See the decal on the side of the deck lift plate for cut heights.

6. Push the deck lift pedal, release the transport lock and allow the deck to lower to the cutting height.

It is recommended to change the anti-scalp roller position when the height of cut has changed.

1. Stop the machine and move the motion control levers outward to the neutral locked position.

2. Disengage the PTO.

3. Engage the park brake.

4. Stop the engine, remove the key and wait for all moving parts to stop.

5. After adjusting the height of cut, adjust the anti-scalp rollers by removing the mounting hardware.

6. Place the rollers in one of the positions shown (Figure 18). Rollers will maintain 3/4 inch (19 mm) clearance to the ground to minimize gouging and roller wear or damage.

   

   Figure 18

   For cutting heights above 3.5 inches (90 mm) use the bottom hole. The rollers will still be effective against scalping.

   1. Anti-scalp roller mounting bracket
   2. Cutting height

   For Maximum Deck Flotation, place the rollers one hole position lower. Rollers should maintain 1/4 inch (6.4 mm) clearance to the ground. Do Not adjust the rollers to support the deck.

7. Reinstall the mounting hardware as shown in Figure 19.

   

   Figure 19

   1. 3/8-16 X 5 inch bolt
   2. Spacer
   3. Front right anti-scalp bracket shown
   4. 3/8 inch nyloc nut

Note: The foot operated deck lift assist lever can be used to momentarily lift the deck to clear objects. Be sure that PTO is disengaged.

Important: Refer to the Engine Owner’s Manual for additional maintenance procedures.

1. Stop engine and wait for all moving parts to stop. Make sure unit is on a level surface.

2. Check with engine cold.

3. Clean area around dipstick. Remove dipstick and wipe oil off. Reinsert the dipstick according to the engine manufacturer's recommendations. Remove the dipstick and read the oil level.

4. If the oil level is low, wipe off the area around the oil fill cap, remove cap and fill to the “FULL” mark on the dipstick. Exmark 4-Cycle Premium Engine Oil is recommended; refer to the Engine Owner's manual for an appropriate API rating and viscosity. Do Not overfill.

Important: Do Not operate the engine with the oil level below the “LOW” (or “ADD”) mark on the dipstick, or over the “FULL” mark.

Allowing batteries to stand for an extended period of time without recharging them will result in reduced performance and service life. To preserve optimum battery performance and life, recharge batteries in storage when the open circuit voltage drops to 12.4 volts.

Note: To prevent damage due to freezing, battery should be fully charged before putting away for winter storage.

Charge batteries in an open well ventilated area, away from spark and flames. Unplug charger before connecting or disconnecting from battery. Wear protective clothing and use insulated tools.

Check the voltage of the battery with a digital voltmeter. Locate the voltage reading of the battery in the table and charge the battery for the recommended time interval to bring the charge up to a full charge of 12.6 volts or greater.

Important: Make sure the negative battery cable is disconnected and the battery charger used for charging the battery has an output of 16 volts and 7 amps or less to avoid damaging the battery (see chart for recommended charger settings).

1. Check the weak battery for terminal corrosion (white, green, or blue “snow”), it must be cleaned off prior to jump starting. Clean and tighten connections as necessary.

   Caution

   Corrosion or loose connections can cause unwanted electrical voltage spikes at anytime during the jump starting procedure.

   Do Not attempt to jump start with loose or corroded battery terminals or damage to the engine may occur.

   Danger

   Jump starting a weak battery that is cracked, frozen, has low electrolyte level, or an open/shorted battery cell, can cause an explosion resulting in serious personal injury.

   Do Not jump start a weak battery if these conditions exist.

2. Make sure the booster is a good and fully charged lead acid battery at 12.6 volts or greater. Use properly sized jumper cables (4 to 6 AWG) with short lengths to reduce voltage drop between systems. Make sure the cables are color coded or labeled for the correct polarity.

   Caution

   Connecting the jumper cables incorrectly (wrong polarity) can immediately damage the electrical system.

   Be certain of battery terminal polarity and jumper cable polarity when hooking up batteries.

   Note: The following instructions are adapted from the SAE J1494 Rev. Dec. 2001 – Battery Booster Cables – Surface Vehicle Recommended Practice (SAE – Society of Automotive Engineers).

   Warning

   Batteries contain acid and produce explosive gases.

   • Shield the eyes and face from the batteries at all times.

   • Do Not lean over the batteries.

   Note: Be sure the vent caps are tight and level. Place a damp cloth, if available, over any vent caps on both batteries. Be sure the vehicles do not touch and that both electrical systems are off and at the same rated system voltage. These instructions are for negative ground systems only.

3. Connect the positive (+) cable to the positive (+) terminal of the discharged battery that is wired to the starter or solenoid as shown in .

   

   Figure 23

   1. Positive (+) cable on discharged battery
   2. Positive (+) cable on booster battery
   3. Negative (–) cable on the booster battery
   4. Negative (–) cable on the engine block
   5. Booster battery
   6. Discharged battery
   7. Engine block

4. Connect the other end of the positive cable to the positive terminal of the booster battery.

5. Connect the black negative (–) cable to the other terminal (negative) of the booster battery.

6. MAKE THE FINAL CONNECTION ON THE ENGINE BLOCK OF THE STALLED VEHICLE (NOT TO THE NEGATIVE POST) AWAY FROM THE BATTERY. STAND BACK.

7. Start the vehicle and remove the cables in the reverse order of connection (the engine block (black) connection is the first to disconnect).

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

2. Lift deck and secure in raised position as stated in the Clean Grass Build-Up Under Deck section.

3. Inspect blades and sharpen or replace as required.

4. Reinstall the blades (if they were removed) in the following order:

   1. Install bushing through blade with bushing flange on bottom (grass) side of blade.

      

      Figure 24

      1. Install bushing in blade prior to installing bushing in spindle.

   2. Install bushing/blade assembly into spindle. Make sure the splines on the bushing are engaged in the spindle before tightening the bolt.

      

      Figure 25

      1. Use wrench here for blade installation. This nut has been torqued to 90 ft-lb (122 N-m) minimum
      2. Torque to 50-60 ft-lb (68-81 N-m) Apply lubricant to threads as needed to prevent seizing. Copper-based anti-seize preferable. Grease acceptable substitute.

   3. 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 50-60 ft-lb (68-81 N-m).

   Warning

   Incorrect installation of the blade or components used to retain the blade can be dangerous. Failure to use all original components and assembled as shown could allow a blade or blade component to be thrown out from under the deck resulting in serious personal injury or death.

   Always install the original Exmark blades, blade bushings, and blade bolts as shown.

Important: It is essential that operator safety mechanisms be connected and in proper operating condition prior to use.

Note: If machine does not pass any of these tests, Do Not operate. Contact an Authorized Service Dealer.

Note: To prevent engine cut-outs on rough terrain, the seat has a 1/2 second time delay before the engine begins to shutdown.

Check the Normal Engine Starting Chart

		System
		Parking Brake	PTO	Motion Control Levers	Operator	Outcome
	State of System	Engaged	Disengaged (Blades)	Both levers out (neutral lock)	In seat or out of the seat	Starter should crank

Check Engine Starting Circuit Chart

Note: In the Check Engine Starting Circuit Chart, the state of system item that is bold is being checked in each scenario.

	System
	Parking Brake	PTO (Blades)	Motion Control Levers	Operator	Outcome
State of System	Engaged	Disengaged	Right lever moved in.Left lever moved in.	Operator in seat	Starter must not crank
	Disengaged	Disengaged	Both levers out (neutral lock)	Operator in seat	Starter must not crank
	Engaged	Engaged	Both levers out (neutral lock)	Operator in seat	Starter must not crank

Check Shutdown Circuit Chart

Note: The state of system item(s) that is bold is being checked in each scenario.

	System
	Engine	Parking Brake	PTO (Blades)	Motion Control Levers	Operator	Outcome
State of System	Running idle (1/3 throttle)	Disengaged	Disengaged	Both levers moved out (neutral lock)	Raise off of seat (but don’t get off)	Engine must begin shutdown within 1 second
	Running idle (1/3 throttle)	Disengaged	Engaged	Both levers moved out (neutral lock)	Raise off of seat (but don’t get off)	Engine must begin shutdown within 1 second
	Running idle (1/3 throttle)	Engaged	Disengaged	Right lever moved in.Left lever moved in.	Operator in seat	Engine must begin shutdown within 1 second
	Running idle (1/3 throttle)	Engaged	Engaged	Both levers moved out (neutral lock)	Raise off of seat (but don’t get off)	Engine must begin shutdown within 1 second

Check that both the mounting hardware and the knobs are in good working condition. Make sure the knobs are fully engaged with the ROPS in the raised position. The upper hoop of the roll bar may need to be pushed forward or pulled rearward to get both knobs fully engaged.

Figure 26

1. Engaged
2. Partially engaged — Do Not operate with ROPS in this condition.

Visually inspect seat belt for wear, cuts, and proper operation of retractor and buckle. Replace before operating if damaged.

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

2. Visually inspect machine for any loose hardware or any other possible problem. Tighten hardware or correct the problem before operating.

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

2. See the Engine Owner's Manual for maintenance instructions.

Important: To prevent engine damage, always operate the engine with both air filters and cover installed.

1. When checking or replacing the air filter element, make sure the air filter assembly is installed in the brackets.

2. Position the air cleaner cover so that the breather valve does not interfere with the throttle mechanism.

   

   Figure 27

   1. Air cleaner cover
   2. Throttle mechanism
   3. Breather valve

3. Secure the cover with latches.

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

2. Drain oil while engine is warm from operation.

3. Remove dip stick. The oil drain hose is located on right hand side of engine at the rear. Place pan under machine to catch oil. Remove plug from end of drain hose. Allow oil to drain.

4. Replace the oil filter every other oil change. Clean around oil filter and unscrew filter to remove. Before reinstalling new filter, apply a thin coating of Exmark 4–Cycle Premium Engine oil on the surface of the rubber seal. Turn filter clockwise until rubber seal contacts the filter adapter then tighten filter an additional 1/2 to 3/4 turn.

5. Clean around oil fill cover and remove cap. Fill to specified capacity and replace cap.

6. Use oil recommended in the Check Engine Oil Level section. Do Not overfill. Start the engine and check for leaks.

7. Wipe up any spilled oil from engine deck mounting surfaces.

1. Stop engine and wait for all moving parts to stop. Engage parking brake.

2. Wait until the machine cools before checking the hydraulic oil.

3. Check expansion tank and if necessary add Exmark Premium Hydro Oil to the FULL COLD line (see Figure 28).

   

   Figure 28

   1. Expansion tank
   2. Full cold line

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

2. Check tire pressure in drive tires and pneumatic casters.

3. Inflate pneumatic casters to 13 psi (90 kPa).

   Inflate drive tires to 13 psi (90 kPa).

4. Semi-pneumatic caster tires Do Not need to be inflated.

Note: Do Not add any type of tire liner or foam fill material to the tires. Excessive loads created by foam filled tires may cause failures to the hydro drive system, frame, and other components. Foam filling tires will void the warranty.

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.

   Note: No adjustments are required for belt tension.

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 one to two pumps of 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. Front Caster Pivots	*0	2	*Yearly

3. Lubricate caster pivots once a year. Remove hex plug and cap. Thread grease zerk in hole and pump with grease until it oozes out around top bearing. Remove grease zerk and thread plug back in. Place cap back on.

Remove spark plugs, check condition and reset gaps, or replace with new plugs. See Engine Owner's Manual.

A fuel filter is installed between the fuel tank and the engine. Replace when necessary.

Note: It is important to reinstall the fuel line hoses and secure with plastic ties the same as they were originally installed at the factory to keep the fuel line away from components that could cause fuel line damage.

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

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.

3. Carefully clean area around the filters. It is important that no dirt or contamination enter the hydraulic system.

4. Place a catch pan under the hydro.

5. Remove and retain the oil filter covers on each of the transaxles. Remove and discard the o-ring from the covers.

6. Allow the oil to drain. Remove and discard the filters from the transaxle housings.

   Install a new o-ring onto the filter cover and reinstall the cover. Torque to 200-300 in-lb (23-34 N-m).

7. Remove the top oil fill vent port plug and fill until it reaches the oil fill vent port. Reinstall the vent port plug and continue to fill as stated in Check Hydraulic Oil and Tank Level.

   

   Figure 29

   1. Vent plug

   Hydro Oil	Service Interval
   Exmark Premium Hydro Oil (Preferred)	After first 100 hours*Every 400 hours thereafter
   Mobil 1 15W50	After first 100 hours *Every 250 hours thereafter

   *May need more often under severe conditions.

8. Remove the catch pan and properly dispose of hydro oil and filter according to local codes.

Note: Do Not change the hydraulic system oil (except for what can be drained when changing filter), unless it is felt the oil has been contaminated or been extremely hot.Changing oil unnecessarily could damage hydraulic system by introducing contaminants into the system.

Air must be purged from the hydraulic system when any hydraulic components, including oil filter are removed.

1. Stop engine and wait for all moving parts to stop. Raise the rear of the machine up onto jack stands high enough to raise the drive wheels off the ground.

2. Check oil level as stated in Check Hydraulic Oil and Tank Level section.

3. Start engine and move throttle control ahead to full throttle position. Move the speed control lever to the middle speed position and place the drive levers in the “drive” position.

4. Open the drive wheel release on each pump.

5. With the machine running, slowly stroke the drive levers from forward to reverse several times. Then, retighten the drive wheel release valves. Slowly stroke the drive levers from forward to reverse several times.

6. If either drive wheel still does not rotate, stop and repeat steps 4 and 5 above for the respective pump. If wheels rotate slowly, the system may prime after additional running. Check oil level as stated in Check Hydraulic Oil and Tank Level section.

7. Allow the machine to run several minutes after the charge pumps are “primed” with drive system in the full speed position. Check oil level as stated in Check Hydraulic Oil and Tank Level section.

8. Check hydro drive linkage adjustment as stated in Hydro Drive Linkage Adjustment section in Adjustments.

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

2. Wait for muffler to cool.

3. If any breaks in the screen or welds are observed, replace arrester.

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.

Thread locking adhesives such as “Loctite 242” or “Fel-Pro, Pro-Lock Nut Type” are used on the following fasteners:

• ROPS spring pin housing.

• Hydro park brake anchor mounting bolt

• Deck lift link mounting bolt.

Thread locking adhesives are required for some hardware on engines — see the Engine manual.

Copper-based anti-seize is used in the following location:

On threads of Blade Bolts. See Check Mower Blades section.

Dielectric grease is used on all blade type electrical connections to prevent corrosion and loss of contact. Dielectric grease should not be applied to sealed connectors.

1. Position the mower on a flat surface.

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

3. Check the tire pressure in the drive tires. Proper inflation pressure for tires is 13 psi (90 kPa). Adjust if necessary.

4. Position the transport lock in the latching position.

5. Carefully rotate the blades from side to side.

6. Measure between the outside cutting edges and the flat surface (Figure 30). If both measurements are not within 3/16 inch (5 mm), an adjustment is required; continue with this procedure.

   

   Figure 30

   1. Blades side to side
   2. Measure here

7. Set anti-scalp rollers to top holes or remove completely for this adjustment.

8. Raise the deck to the transport (5 1/2 inch (14 cm) cutting height) position.

9. Slowly loosen the adjusting screw on the lift assist spring until the screw can be removed (see Figure 31). Save the screw for reinstallation.

   

   Figure 31

   1. Adjusting screw
   2. Bracket
   3. Set gap to 3/8–5/8 inch (9–16 mm)

10. Set the height-of-cut lever to the 3 inch (76 mm) position. Place two “B” thick blocks (see Block Height and Rake Table) under the rear edge of the cutting deck skirt; one on each side of the cutting deck. Place two “A” thick blocks under each side of the front edge of the deck, but not under the anti-scalp roller brackets.

    Deck Size	Front Block Height “A”	Rear Block Height “B”	Rake “R”
    48, 52, & 60	2.63 inches (6.7 cm)	2.88 inches (7.3 cm)	1/16–5/16 inch (1.6–7.9 mm)

11. Carefully rotate the blades side to side (Figure 30).

12. Loosen the leveling adjust locking nuts (item 1 Figure 32) on all four corners so that the deck is sitting securely on all four blocks. Make sure that the slack is removed from the deck hangers and the deck lift foot lever is pushed back against the stop, then tighten the four leveling adjust locking nuts.

    

    Figure 32

    1. Leveling adjust locking nuts
    2. Deck lift arm
    3. Deck hanger
    4. Chain

13. Recheck that blocks fit just snugly under the deck skirt. Make sure all attachment bolts are tight

14. Continue leveling the deck by checking the front-to-rear blade slope; refer to Adjusting the Blade Slope.

15. Recheck blades for levelness and repeat deck leveling procedure if necessary.

16. Raise the deck to the transport (5 1/2 inch (14 cm) cutting height) position.

17. Reinstall the lift assist spring adjusting screw that was removed in Step 9.

18. Set the gap between the spring and bracket to 3/8–5/8 inch (9–16 mm).

Self-tensioning - No adjustment necessary.

Self-tensioning - No adjustment necessary.

Check to make sure brake is adjusted properly. This procedure must be followed after the first 100 hours or when a brake component has been removed or replaced.

1. Drive the machine onto a level surface.

2. Disengage the blade control switch (PTO), move the motion control levers to the neutral locked position and set the parking brake.

3. Stop the engine, wait for all moving parts to stop, and remove the key.

4. Setup the machine to be pushed by hand (see Drive Wheel Release Valves in the Operation section).

5. Raise the back of the machine up and support the machine with jack stands.

6. Engage/disengage the brake and check each drive tire to make sure each brake engages/disengages.

7. If adjustment is necessary, disengage the park brake. Remove and retain the nut, spacer, and screw from the brake linkage shaft (see Figure 33).

   

   Figure 33

   1. Nut
   2. Parking brake
   3. Spacer
   4. Screw
   5. Brake linkage shaft
   6. Spring retention nut
   7. Spring
   8. 2 inches (51 mm)

8. Check both spring lengths as shown in Figure 33. If adjustment is necessary, turn the spring retention nut clockwise to shorten and counterclockwise to lengthen.

9. Push the parking brake lever all the way forward and down. Rotate the brake linkage shaft until the end aligns with hole in lever.

   • Shorten the linkage by turning it clockwise.

   • Lengthen the linkage by turning it counterclockwise.

   Insert the brake linkage shaft into parking brake hole and secure with the screw, spacer, and nut as shown in Figure 33. Repeat step 6 and readjust if necessary.

10. When adjustment is complete, remove the jack stands or equivalent support and lower the machine.

11. Place the machine into the “operating” position. Refer to the Drive Wheel Release Valves section in Operation.

Adjusting the height:

The motion control levers can be adjusted higher or lower for maximum operator comfort.

1. Remove the hardware holding the control lever to the control arm shaft.

   

   Figure 34

   1. Bolt
   2. Control lever
   3. Control arm shaft
   4. Nut
   5. Slotted hole

2. Move the control lever to the next set of holes. Secure the lever with the hardware.

3. Repeat the adjustment for the opposite control lever.

Adjusting the Tilt

The motion control levers can be tilted fore or aft for maximum operator comfort.

1. Loosen the upper bolt holding the control lever to the control arm shaft.

2. Loosen the lower bolt just enough to pivot the control lever fore or aft. Tighten both bolts to secure the control in the new position.

3. Repeat the adjustment for the opposite control lever.

If the machine travels or pulls to one side, when the motion control levers are in the full forward position, adjust the tracking screw.

1. Insert a 3/16 inch hex wrench through the access hole on the front cover panel, rotate the tracking screw clockwise or counterclockwise to adjust the travel of the lever.

   

   Figure 35

   1. Access hole on front cover panel
   2. Tracking screw

2. Drive the machine and check the full forward tracking.

3. Repeat steps 1 and 2 until desired tracking is obtained.

Located on either side of the machine, below the seat are the pump control linkages. Rotating the end nut with a 1/2 inch deep socket wrench allows fine tuning adjustments so that the machine does not move in neutral. Any adjustments should be made for neutral positioning only.

1. Prior to starting the engine, push the deck lift pedal and remove the height of cut pin. Lower deck to the ground.

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.

3. Remove the electrical connection from the seat safety switch, located under the bottom cushion of the seat. The switch is a part of the seat assembly.

4. Temporarily install a jumper wire across the terminals in the connector of the main wiring harness.

5. Start engine. Brake must be engaged and motion control levers out to start engine. Operator does not have to be in the seat. Run engine at full throttle and release brake.

6. Run the machine at least 5 minutes with the drive levers at full forward speed to bring hydraulic oil up to operating temperature.

   Note: The motion control lever needs to be in neutral while making any necessary adjustments.

7. Bring the motion control levers into the neutral position. The control plate tabs should touch the return to neutral plates on the hydros. Adjust pump control rod lengths by turning the nut in the appropriate direction until the wheels slightly creep in reverse (see Figure 36). Move the motion control levers to the reverse position and while applying slight pressure to the lever allow the reverse indicator springs to bring the levers back to neutral. The wheels must stop turning or slightly creep in reverse.

   The motion control cover may need to be removed to gain access.

   

   Figure 36

   1. Nut
   2. Stationary plate
   3. Control plate
   4. Return to neutral plate
   5. Tabs touching return to neutral plate

8. Shut off the machine. Remove jumper wire from wire harness and plug connector into seat switch.

9. Remove the jack stands.

10. Raise the deck and reinstall the height of cut pin.

11. Check that the machine does not creep in neutral with the park brake disengaged.

No adjustment necessary. However, when the clutch brake has worn to the point where the clutch no longer engages consistently, the shim can be removed to extend the clutch life (not applicable for Lazer Z E-Series with 48 inch decks).

Figure 37

1. Armature
2. Field shell
3. Rotor
4. Brake mounting bolt
5. Brake spacer
6. Re-gap shim
7. Brake pole

Removing the Shim:

1. Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake. Allow the machine to cool completely before starting these instructions.

2. Using a pneumatic line, blow out any debris from under the brake pole and around the brake spacers.

3. Check the condition of the wire harness leads, connectors, and terminals. Clean or repair as necessary.

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:

   1. Loosen both brake mounting bolts one-half to one full turn (see Figure 38).

      Note: Do Not remove the brake pole from the field shell/armature. The brake pole has worn to match the armature and needs to continue to match after the shim is removed to ensure proper brake torque.

      

      Figure 38

      1. Brake mounting bolt
      2. Shim

   2. Using needle nose pliers, or by hand, take hold of the tab and remove the shim (Do Not discard the shim until proper clutch function has been confirmed).

   3. Using a pneumatic line, blow out any debris from under the brake pole and around the brake spacers.

   4. Re-torque each bolt (M6 x 1) to 10 ft-lb (13 N-m) +/-0.5 ft-lb (0.7 N-m).

   5. 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.)

      

      Figure 39

      1. Feeler gauge
      

      Figure 40

      1. Feeler gauge

      • If the gap is less than 0.010 inch, then reinstall the shim and reference the Troubleshooting section.

      • If the gap is sufficient, proceed to the safety check in step 6.

   6. Perform the following safety check:

      1. Sit on the seat and start the engine.

      2. Make sure the blades Do Not engage with the PTO switch “off” and the clutch disengaged.

         If the clutch does not disengage, reinstall the shim and reference the Troubleshooting section.

      3. Engage and disengage the PTO switch ten consecutive times to ensure the clutch is functioning properly. If the clutch does not engage properly, reference the Troubleshooting section.

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. If disassembled, make sure the spring disc washers are reinstalled as shown in Figure 41.

Figure 41

1. Spring disc washers

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

2. Clean off any oil, debris, or grass build-up on the machine and cutting deck, especially under deck belt shields, around the fuel tank, around engine and exhaust area.

   Important: You can wash the machine with mild detergent and water. Do not pressure wash the machine. Avoid excessive use of water, especially near the control panel, under the seat, around the engine, hydraulic pumps, and motors.

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

2. Clean all debris from rotating engine air intake screen, around engine shrouding, and exhaust system area.

3. Wipe up any excessive grease or oil around the engine and exhaust system area.

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

2. Remove cooling shrouds from engine and clean cooling fins. Also clean dust, dirt and oil from external surfaces of engine which can cause inadequate cooling.

3. Make sure cooling shrouds are reinstalled. Operating the engine without cooling shrouds will cause engine damage due to overheating.

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

2. Raise deck to the transport (5 1/2 inch (14 cm) cutting height) position. Lift the front of unit and support unit using jack stands or equivalent support.

3. Clean out any grass build-up from underside of deck and in discharge deflector.