Operation

The Safety Interlock System

CAUTION

If safety interlock switches are disconnected or damaged the machine could operate unexpectedly causing personal injury.

•Do Not tamper with the interlock switches.

•Check the operation of the interlock switches daily and replace any damaged switches before operating the machine.

Understanding the Safety Interlock System

The safety interlock system is designed to prevent the engine from starting unless:

•The blades are disengaged.

•The motion control levers are in the neutral position.

•The parking brake is engaged.

The safety interlock system is designed to initiate engine shutdown when:

•The parking brake is disengaged and the operator gets off machine.

•The PTO is engaged and the operator gets off machine.

•The parking brake is disengaged and levers are in and the operator gets off machine.

•The parking brake is engaged and motion control levers are in.

Testing the Safety Interlock System

Test the safety interlock system before you use the machine each time

1.Check starting circuit. Starter should crank with parking brake engaged, PTO disengaged and motion control levers moved out in the neutral lock position. The operator does not need to be in the seat to start the engine.

Try to start with operator in seat, parking brake disengaged, PTO disengaged and motion control levers in the neutral lock position - starter must not crank.

Try to start with operator in seat, parking brake engaged, PTO engaged and motion control levers in the neutral lock position - starter must not crank.

Try to start with operator in seat, parking brake engaged, PTO disengaged, and the left motion control lever in, starter must not crank, repeat again with the right lever in, then with both levers in - starter must not crank.

2.Check kill circuits. Run engine at one-third throttle, disengage parking brake and raise off of seat (but do not get off of machine) engine must initiate shutdown.

Run engine at one-third throttle, engage PTO and raise off of seat (but do not get off of machine) engine must initiate shutdown.

Run engine at one-third throttle, with brake disengaged, move levers in and raise off seat (but do not get off of machine) engine must initiate shutdown.

Again, run engine at one-third throttle, brake engaged, and move left motion control lever in

-engine must initiate shutdown.

Repeat again moving the right lever in, then moving both levers in - engine must initiate shutdown whether operator is on seat or not.

Note: If machine does not pass any of these tests, Do Not operate. Contact your authorized EXMARK

SERVICE DEALER.

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

Driving Forward or Backward

The throttle control regulates the engine speed as measured in rpm (revolutions per minute). Place the throttle control in the Fast position for best performance. Always operate in the Fast (full throttle) position.

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Exmark 4500-450 manual Driving Forward or Backward, Understanding the Safety Interlock System
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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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