Fuel System Maintenance. Exmark QUEST QZS708GEM50200

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Fuel System Maintenance. Exmark QUEST QZS708GEM50200 | Manualzz


More often under dirty conditions.

To ensure proper cooling, make sure the grass screen, cooling fins, and other external surfaces of the engine are kept clean at all times.


Remove the blower housing and any other cooling shrouds.


Clean the cooling fins and external surfaces as necessary.


Make sure the cooling shrouds are reinstalled

Important: Operating the engine with a blocked grass screen, dirty or plugged cooling fins, and/or cooling shrouds removed, will cause engine damage due to overheating.

Figure 52 g200004

Fuel System Maintenance

Replacing the Fuel Filter

Service Interval: Every 100 hours/Yearly

(whichever comes first)


In certain conditions, gasoline is extremely flammable and highly explosive. A fire or explosion from gasoline can burn you and others and can damage property.

• Perform any fuel related maintenance when the engine is cold. Do this outdoors in an open area. Wipe up any gasoline that spills.

• Never smoke when draining gasoline, and stay away from an open flame or where a spark may ignite the gasoline fumes.

Never install a dirty filter if it is removed from the fuel line.


Park the machine on a level surface and disengage the blade control switch.


Move the motion control levers out to the neutral lock position, engage parking brake, stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.


The fuel filter is in the fuel line between the tank and engine.


Squeeze the ends of the hose clamps together and slide them away from the filter.


Remove the filter from the fuel lines.


Install a new filter with the flow direction arrow coming from the fuel tank and pointing to the engine. Move the hose clamps close to the filter to secure it in place.

Servicing the Emissions


Service Interval: Yearly

The machine is equipped with an emissions filter connected to a tee fitting on the vent line coming from the gas tank. The filter has an open port by design. The filter should be inspected regularly.

Replace the filter if the filter is dirty or clogged.

Electrical System




Proposition 65 Warning

Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of

California to cause cancer and reproductive harm. Wash hands after handling.



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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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