Mower Maintenance. Exmark QUEST QZS708GEM50200


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Mower Maintenance. Exmark QUEST QZS708GEM50200 | Manualzz

Maintenance

Installing the Hydraulic System

Filters

5.

Install the transaxle guard. Refer to Figure 58 for the correct torque values for the nuts and bolts.

6.

Proceed to the Bleeding the Hydraulic System section.

Important: Failure to perform the

Bleeding the Hydraulic System

procedure after changing hydraulic filters and oil can result in irreparable damage to the transaxle drive system.

Figure 60

1.

Apply a thin coat of oil on the surface of the rubber seal of each filter.

2.

Turn the filter clockwise until rubber seal contacts the filter adapter then tighten the filter an additional 3/4 to 1 full turn. Repeat for the other filter

3.

Install the filter guards over each filter as previously removed. Use the three screws to secure the filter guards.

4.

With the vent plugs removed on each transmission, insert the pump hose into the vent holes and hold while pumping. Pump in 2 quarts

(1.9 L) of oil. Continue to add a third quart until the oil is level with the vent hole (approximately

1/4 quart (.2 L)). When the oil comes out of the vent hole, reinstall the plugs.

Torque plugs to 180 in-lb (244 N-m).

g008748

Bleeding the Hydraulic System

1.

Enter the operator's position. Start engine and move throttle control ahead to 1/2 throttle position. Disengage parking brake.

A.

Move the bypass levers into the pushing the machine position; refer to the Pushing the

Machine by Hand section in Operation. With the bypass valves open and the engine running, slowly move the motion control levers in both forward and reverse (5 or 6 times).

B.

Move the bypass levers into the operating the machine position. With the bypass valve closed and the engine running, slowly move the directional control in both forward and reverse directions (5 to 6 times).

C.

Stop the engine and check the oil level in the vent plug holes. Add the specified oil until it comes out of the vent plug holes.

2.

Repeat step 1 until all the air is completely purged from the system.

When the transaxle operates at normal noise levels and moves smoothly forward and reverse at normal speeds, then the transaxle is considered purged.

3.

Check the oil level by removing the vent plugs.

Add the specified oil until it reaches the vent plug holes if necessary.

Mower Maintenance

Servicing the Cutting Blades

Service Interval: Before each use or daily

Maintain sharp blades throughout the cutting season because sharp blades cut cleanly without tearing or shredding the grass blades. Tearing and shredding turns grass brown at the edges, which slows growth and increases the chance of disease.

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Maintenance

Check the cutter blades daily for sharpness, and for any wear or damage. File down any nicks and sharpen the blades as necessary. If a blade is damaged or worn, replace it immediately with a genuine Exmark replacement blade. For convenient sharpening and replacement, you may want to keep extra blades on hand.

WARNING

A worn or damaged blade can break, and a piece of the blade could be thrown into the operator's or bystander's area, resulting in serious personal injury or death.

• Inspect the blade periodically for wear or damage.

• Replace a worn or damaged blade.

1.

Checking for Bent Blades

Note: The machine must be on a level surface for the following procedure.

Raise the mower deck to the highest height-of-cut position; also considered the 'transport' position.

2.

While wearing thickly padded gloves or other adequate hand protection slowly rotate blade to be measure into a position that allows effective measurement of the distance between the cutting edge and the level surface the machine is on.

Before Inspecting or Servicing the

Blades

Park the machine on a level surface, disengage the blade control switch, and move the motion control levers outward to neutral lock, and engage the parking brake. Stop the engine, remove the key, and disconnect the spark plug wire(s) from the spark plug(s).

1.

Deck

2.

Spindle housing

Figure 62

3.

Blade

Inspecting the Blades

1.

Inspect the cutting edges (Figure 61). If the edges are not sharp or have nicks, remove and sharpen the blades; refer to Sharpening the Blades .

2.

Inspect the blades, especially the curved area. If you notice any damage, wear, or a slot forming in this area (item 3 in Figure 61), immediately install a new blade.

3.

Measure from the tip of the blade to the flat surface here.

g014972

1.

Cutting edge

2.

Curved area

Figure 63

1.

Blade, in position for measuring

2.

Level surface

3.

Measured distance between blade and surface (A) g014973

Figure 61

3.

Wear/slot forming

4.

Damage g006530 4.

Rotate the same blade 180 degrees so that the opposing cutting edge is now in the same position.

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Maintenance g014974 new blade. Refer to Removing the Blades and

Installing the Blades.

Note: If a bent blade is replaced with a new one and the dimension obtained continues to exceed 1/8 inch (3mm), the blade spindle could be bent. Contact an Authorized Exmark

Dealer for service.

B.

If the variance is within constraints, move to the next blade.

Figure 64

1.

Blade, side previously measured

2.

Measurement position used previously

3.

Opposing side of blade being moved into measurement position

5.

Measure from the tip of the blade to the flat surface here. The variance should be no more than 1/8 inch (3mm).

Figure 65

Repeat this procedure on each blade.

g014973

Checking for Loose Blades or

Damaged Spring Disc Washers

1.

Place a wrench on the blade bolt and torque to

35-65 ft-lb (47-88 N-m).

2.

With the wrench still on the blade bolt, hold the blade spindle stationary and using a rag or thickly padded glove, try to rotate the blade. If the blade rotates relative to the spindle guard without further tightening the blade bolt, the spring disc washer has been flattened or damaged and the bolt and washer assembly must be replaced

(Figure 66). Refer to Removing the Blades and

Installing the Blades .

3.

Once the blade has been removed, inspect the spring disc washer. If the washer appears to be damaged (the washer surface has been marred) or flattened, the bolt and washer assembly must be replaced.

1.

Opposing blade edge, in position for measuring

2.

Level surface

3.

Second measured distance between blade and surface

(B)

Removing the Blades

The blades must be replaced if a solid object is hit, if the blade is out of balance, or the blade is bent. To ensure optimum performance and continued safety conformance of the machine, use genuine Exmark replacement blades. Replacement blades made by other manufacturers may result in an unsafe machine.

WARNING

A worn or damaged blade can break, and a piece of the blade could be thrown into the operator's or bystander's area, resulting in serious personal injury or death.

• Inspect the blade periodically for wear or damage.

• Replace a worn or damaged blade.

Hold the blade end using a rag or thickly-padded glove. Remove the blade bolt, curved washer, and blade from the spindle shaft (Figure 66).

A.

If the difference between A and B is greater than 1/8 inch (3mm) replace the blade with a

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Key Features

  • 708cc Kawasaki engine delivers reliable power and performance
  • 50" cutting deck with 3 blades provides a wide cutting path for increased productivity.
  • Hydrostatic drive system offers precise control and smooth operation
  • Adjustable seat with armrests ensures operator comfort during extended mowing sessions.
  • High-back seat provides lumbar support and reduces operator fatigue.
  • Electric blade engagement for easy and convenient blade activation
  • Large fuel tank allows for extended mowing time without frequent refueling
  • Hour meter tracks operating time for maintenance scheduling and warranty purposes.

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Frequently Answers and Questions

What type of engine does the Exmark QUEST QZS708GEM50200 have?
It has a 708cc Kawasaki engine.
How wide is the cutting deck?
The cutting deck is 50 inches wide.
Does the mower have a hydrostatic drive system?
Yes, it has a hydrostatic drive system for precise control and smooth operation.
Is the seat adjustable?
Yes, the seat is adjustable with armrests for operator comfort.
How long can I mow before refueling?
The large fuel tank allows for extended mowing time without frequent refueling.
How do I activate the blades?
The blades are activated by an electric blade engagement system for easy and convenient operation.
What is the purpose of the hour meter?
The hour meter tracks operating time for maintenance scheduling and warranty purposes.

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