Annually or every 100 hours of operation (more often under extremely dusty, dirty conditions), 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. Torque the blower housing screws to 5.5 ft-lb (7.5 N-m).

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.

Fuel System

Maintenance

In certain conditions, petrol is extremely flammable and highly explosive. A fire or explosion from petrol 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 spillage.

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

Replacing the Fuel Filter

Service Interval: Every 100 hours—Replace the fuel filter.

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

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

2.Move the motion control levers outward to the park position, stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

3.Raise the seat and locate the fuel line coming from the fuel tank below. The fuel filter is in the fuel line between the tank and engine.

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Hayter Mowers RZT420H manual Fuel System Maintenance, Replacing the Fuel Filter
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RZT420H specifications

The Hayter Mowers RZT420H is a cutting-edge lawn mower designed for those who demand efficiency and superior performance while maintaining their gardens. This machine combines innovative technology with user-friendly features to deliver a top-notch mowing experience.

One of the standout features of the RZT420H is its robust 42-inch cutting deck, ideally suited for medium to large lawns. This size allows for swift mowing while ensuring a clean and even cut. The cutting deck is made from high-quality materials, providing durability and resistance against wear and tear. Additionally, the deck’s design is optimized for excellent airflow, enhancing the cutting and mulching performance.

Powering the RZT420H is a reliable 20 HP Kohler engine. This engine provides ample power to handle tough grass conditions, ensuring that you can mow through dense areas without bogging down. The hydrostatic transmission allows for smooth, effortless speed changes, giving users precise control over their mowing speed. Whether navigating tight corners or tackling open fields, the hydrostatic system ensures a seamless mowing experience.

A significant advancement in the RZT420H is its zero-turn capability. This feature enables the mower to pivot around obstacles with ease, reducing the time spent trimming and maneuvering. This agility is complemented by a comfortable operator station, which includes an adjustable seat and user-friendly controls, ensuring that mowing is a pleasurable activity rather than a chore.

The RZT420H is also equipped with a range of convenience features. The easy-to-access maintenance points simplify routine care, making it easier to keep the mower in optimal working condition. Additionally, the mulching kit allows for effective grass recycling, returning nutrients to the lawn while minimizing yard waste.

Furthermore, the RZT420H boasts a compact design, which is particularly advantageous for storage and transport. Its exceptional build quality, combined with cutting-edge technology and thoughtful design details, makes the Hayter Mowers RZT420H a remarkable choice for homeowners seeking a reliable and efficient lawn maintenance solution. In conclusion, this mower brings together power, precision, and convenience, making it a worthy investment for any lawn care enthusiast.
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