2.Check oil level by removing pipe plug (2, Figure 13). The oil level should be at the bottom edge of the hole, as indicated by decal (3, Figure 13). If it becomes necessary to add a small amount of oil to the tank, it is added in the pipe plug hole, possibly using a flexible spout funnel.

Recommended oil is Chevron Rykon 100 or Exxon Univus N100, or equivalent hydraulic oil.

Figure 13

BATTERY

DANGER: Read and follow the battery manufacturer’s instructions on safety, maintenance and installation procedures.

The 8400 is not shipped with a battery. A group size 70, 12-volt side post battery is recommended such as Exide model 70-LT- 60, which is approximately 7-3/16” high, 6- 3/4” wide and 8-5/8” long.

Figure 14

1.Place battery in battery holder (1, Figure 14) with terminals facing the left wheel. Insert the hook end of the battery support rods (2, Figure 14) into holes on the back vertical surface of the battery holder.

2.Place battery hold down (3, Figure 14) over support rods and upper corner of battery and secure with flat washers and hex nuts.

3.Attach the ground wire (4, Figure 14) to the frame as shown. Connect the ignition wire (5, Figure 14) to the positive

(+) terminal of the battery.

4.Attach the ground wire last to the negative (–) terminal of the battery.

SERVICE AND ADJUSTMENTS

Read each instruction completely, and make sure you understand it before making any adjustments. Follow all the safety precautions.

DANGER: To avoid possible serious injury, before making any adjustments or performing maintenance, engage parking brake, place all tractor controls in neutral, lower cutting units to the ground, turn ignition switch “off” and remove key.

2.To adjust the creep of the drive wheels, loosen the fastener attaching the ball bearing (3, Figure 15) to the control arm (4, Figure 15), and move and secure the bearing within the slot to achieve

TRACTION PEDAL

ADJUSTMENTS

The traction pedal (1, Figure 15) is equipped with a safety switch (2, Figure 15) and a neutral centering device. The switch prevents the engine from starting when the pedal is positioned in reverse or forward. The centering device locates neutral positioning of the pump.

1.Prior to adjusting for creep, elevate the wheels off the ground and support the vehicle with jack stands. Any adjustments should be done while the hydraulic oil is warm.

neutral.

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National Mower 99500500-8400 manual Service and Adjustments, Battery, Traction Pedal Adjustments
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99500500-8400 specifications

The National Mower 99500500-8400 is an advanced lawn care solution that epitomizes efficiency and innovation for users who demand high performance from their gardening equipment. Designed for residential and light commercial use, this mower combines state-of-the-art technology with robust features to ensure a seamless mowing experience.

One of the standout features of the National Mower 99500500-8400 is its powerful engine. Equipped with a high-output, fuel-efficient engine, this mower delivers consistent power that translates into excellent cutting performance. This ensures that the mower can tackle various grass types and densities, making it useful for both manicured lawns and rugged terrains.

The 99500500-8400 boasts a durable cutting deck made from high-quality materials that resist corrosion and wear. This deck is designed with precision engineering to enhance airflow for optimal grass clipping discharge, resulting in clean, even cuts regardless of lawn conditions. Furthermore, the adjustable cutting height feature allows users to customize the mower’s settings, enabling them to achieve the desired grass length for their specific needs.

In terms of technology, the National Mower incorporates advanced safety measures to enhance user experience. The intuitive safety features include a blade brake that stops the blades within seconds when the operator releases the handle, reducing the risk of accidents. Additionally, the ergonomic handle design ensures comfort during use, allowing for prolonged operation without strain.

Another impressive characteristic of the 99500500-8400 is its ease of maintenance. The mower is engineered for quick blade sharpening and simple access to engine components, making routine upkeep straightforward for users. This is complemented by a lightweight design that enhances maneuverability, allowing users to navigate through tight spots and around obstacles with ease.

Finally, the National Mower 99500500-8400 is designed with environmental sustainability in mind. The fuel-efficient engine minimizes emissions, making it an eco-friendly choice for consumers looking to maintain their lawns without compromising on their commitment to the environment.

In conclusion, the National Mower 99500500-8400 stands out as a reliable, high-performance lawn mower featuring robust power, safety, and user-friendly characteristics ideal for any homeowner or light commercial user. Its blend of innovative technology and practical design makes it a must-have for efficient lawn care.
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