Exmark 4500-450 manual Specifications, Model Numbers, Systems

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Specifications

Specifications

Model Numbers

Serial Nos: 790,000 and Higher

QST20BE422; QST22BE482; QST24BE522

Systems

Engine

•Engine Specifications: See your Engine Owner’s Manual

•RPM:

–20HP

Full Speed: 3300 ±100 (max) RPM (No Load)

Idle: 1650 (min) RPM

–22HP & 24HP

Full Speed: 3650 ±100 (max) RPM (No Load)

Idle: 1650 (min) RPM

Fuel System

•Capacity: 4.0 gal. (15.1 L)

•Type of Fuel: Regular unleaded gasoline, 87 octane or higher.

•Fuel Filter:

Briggs & Stratton P/N 695666

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

Electrical System

•Charging System: Flywheel Alternator

•Charging Capacity: 16 amps

•Battery Type: BCI Group U1

•Battery Voltage: 12 Volt

•Polarity: Negative Ground

•Fuses: One 25 amp, one 20 amp; one 15 amp blade type

•Diode: TVS

Safety Interlock System

•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.

Operator Controls

•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 parking brake.

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

•Deck Lift Assist Lever: Foot pedal that assists in raising the deck.

Seat

•Type: Standard seat with high back, foam padded with spring suspension and armrests (armrests are optional on the 42 inch unit).

•Mounting: Hinged to tilt up for access to hydraulic pumps, battery and other components. Held in tilted position with lanyard. Adjustable fore and aft.

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Contents Quest California Introduction Contents Safety Alert Symbol SafetySafe Operating Practices General OperationSlope Operation ServiceChildren TowingGeneral Service Exmark Riding Mower Safety93-7009 Safety and Instructional Decals109-6035 116-0532 PTO Symbols 109-8965 Model Numbers SpecificationsSystems Dimensions Torque Requirements Product OverviewControls OperationOperating Instructions Think Safety FirstParking Brake Lever Height-of-Cut Foot LeverRecommended Gasoline Checking the Engine Oil Level Using Stabilizer/ConditionerStarting the Engine Gasoline/Alcohol blendsStopping the Engine Operating the BladesEngaging the Blades Disengaging the BladesUnderstanding the Safety Interlock System Safety Interlock SystemTesting the Safety Interlock System Driving Forward or BackwardStopping the Machine Adjusting the Height of CutForward BackwardGround. Do Not adjust rollers to support the deck Adjusting the Anti-Scalp RollersPositioning the Seat Changing the Seat Ride Suspension Adjusting the Motion Control LeversPushing the Machine by Hand Transporting Side DischargeTo Operate the Machine Transporting a UnitOperating Tips Keep the Underside of the Mower Clean When StoppingBlade Maintenance Cutting SpeedRecommended Maintenance Schedules MaintenanceRaising the Seat Accessing the BatteryLubrication Greasing the BearingsServicing the Air Cleaner Engine MaintenanceServicing Paper Element Checking the Oil Level Servicing the Engine OilChanging the Oil and Filter Remove the foam sleeve from the elementChecking the Hydraulic Oil Level Servicing the Spark Plug Change the Hydraulic System FilterInstalling the Spark Plug Cleaning the Blower HousingRemoving the Spark Plug Checking the Spark PlugElectrical System Maintenance Fuel System MaintenanceReplacing the Fuel Filter Fuel filter is in the fuel line between the tank and engineRemoving the Battery Charging the BatteryCharging the Battery Servicing the Fuses and Relay Installing the BatteryMower Maintenance Servicing the Cutting Blades Drive System Maintenance Checking the Tire PressureBefore Inspecting or Servicing the Blades Inspecting the BladesChecking for Loose Blades or Damaged Spring Disc Washers Removing the BladesInstalling the Blades Mower Belt MaintenanceSharpening the Blades Inspecting the BeltsOff the clutch pulley as shown in and Figure Leveling the Mower DeckFront-to-Rear Blade Slope Adjusting the Blade SlopeDeck lift arm Deck hanger Float retaining nut Locate items shown in Figure Replacing the Discharge DeflectorWashing the Underside of the Mower Tracking AdjustmentMaintenance Storage Cleaning and StorageProblem Possible Cause Corrective Action TroubleshootingTo Pushing the Machine by Hand Diagram SchematicsElectrical Logic Schematic Exmark Quest Turf Equipment Service Record Page Page See EXMARK’S Complete Line of Accessories and Options

4500-450 specifications

The Exmark 4500-450 is a top-tier commercial-grade zero-turn mower that has gained immense popularity among landscaping professionals for its advanced features, superior performance, and durability. Designed to tackle the toughest mowing tasks, the 4500-450 stands out for its reliability and innovative technologies.

One of the defining characteristics of the Exmark 4500-450 is its powerful engine. Equipped with a robust Kohler or Kawasaki engine, this model delivers impressive horsepower, ensuring that it can handle even the most demanding terrains with ease. This power allows for efficient cutting, enabling users to complete jobs more quickly without sacrificing quality.

The Exmark 4500-450 features a commercial-grade cutting deck that is fully adjustable to provide a clean and professional-looking cut. Its cutting width can range from 48 to 60 inches, making it versatile enough to handle various lawn sizes and types. The deck is designed with a unique airflow management system that optimizes grass lift, ensuring even and consistent results.

One of the standout technologies in the Exmark 4500-450 is its patented UltraCut deck design. This innovative feature promotes superior cutting performance while reducing clumping and providing a finer mulching capability. Additionally, the deck is designed for easy cleaning, which helps maintain the mower’s performance over time.

Comfort and usability are top priorities for the Exmark 4500-450. It boasts an ergonomic seat with high back support, reducing operator fatigue during long mowing sessions. The intuitive control system allows for smooth maneuverability, even in tight spaces, making it ideal for commercial landscaping work.

Moreover, the Exmark 4500-450 is built with durability in mind. Constructed from high-quality materials, it is designed to withstand the rigors of daily use. Its heavy-duty frame and components contribute to its long lifespan, ensuring that it remains a reliable workhorse for years to come.

In conclusion, the Exmark 4500-450 is an exceptional choice for professionals seeking a powerful, efficient, and durable zero-turn mower. With its high-performance engine, innovative cutting technologies, and user-friendly features, it sets a standard in commercial landscaping equipment, delivering results that exceed expectations while making the mowing process as efficient and comfortable as possible.
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