National Mower 99500500-8400 manual Prior to Starting the Unit, Operating Suggestions

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To open the valve to permit free-wheeling, simply lift up on the rod and latch washer face (2, Figure 3) onto the bracket slot.

Reverse the procedure for normal operation of the machine.

NOTE: Valve must be closed to operate machine.

Figure 3

Interlock Switches

There are three safety switches on your 8400. They are a safety precaution which will allow you to start your mower only when the traction pedal is in neutral, the reel control switch is in the disengaged position, and the operator is seated on the tractor. If you are able to start your mower with the pedal or switch in any other position, adjustment of the switched is required.

Traction Drive Train

Power from the engine is transmitted by belt to the variable displacement pump. The pump supplies hydraulic fluid to the hydraulic motors.

Reel Drive

Power to the reels is transmitted from the engine to a countershaft shaft, which is controlled by an electric clutch switched on and off at the dash.

PRIOR TO STARTING THE UNIT

1.Fill the gas tank with good quality, clean, regular unleaded gasoline, 85 octane minimum. DO NOT use hi-test gasoline or an oil/gasoline mixture. Fill tank to 1 inch (25 mm) below filler neck. Do not overfill.

2.Check oil in the engine crankcase. It should be filled to the full mark on the dipstick. See Lubrication Specifications in this manual for recommend oil viscosity.

3.Check all lubrication points outlined in “LUBRICATION on page 23.”

4.Check tires for proper inflation. See Mower Specifications in this manual.

5.Check oil level in hydraulic reservoir. Oil level should be the level shown on the decal on the side of the oil tank when unit is sitting on a level surface.

6.Check reels for desired cutting height. To provide a satisfactory cut, it is essential for all reels to be accurately adjusted to exactly the same height. See HEIGHT OF CUT ADJUSTMENT on page 18.

NOTE: If adjustments are necessary, see SERVICE AND ADJUSTMENTS on page 16 for instructions.

OPERATING SUGGESTIONS

Engine

Your machine is powered by a twin cylinder, 4 cycle Briggs and Stratton Vanguard engine which uses unleaded gasoline, 85 octane minimum. DO NOT MIX OIL WITH GASOLINE! Engine speed is controlled by means of a throttle lever mounted on the dash panel.

A separate Engine Manual, prepared by the engine manufacturer, is supplied. Study the manual carefully until you are familiar with the maintenance, operation, adjustment and repair of your equipment. Proper attention to the engine manufacturer’s directions will assure maximum service life of the engine and highest operating efficiency.

CAUTION: Under no circumstances should the engine be started with the operator or bystander standing next to tractor or cutting units.

1.When starting the engine, the operator must be seated on the seat, reel control switch must be off, and traction pedal must be in neutral (the center position).

2.The operator should practice mowing in an open clear area to become thoroughly familiar with the operation of the tractor.

3.Never operate the mowers when they are not cutting grass, as excessive friction and heat will develop between the bedknife and reel, damaging the cutting edge.

4.Plan your cutting pattern to avoid any unnecessary stops or sharp, frequent turns. Study the area to determine the best mowing procedure. Consider the height of the grass and the type of terrain (level, hilly, or rough). Each condition will require certain adjustments or precautions.

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Contents Triplex Reel Mower Table of Contents IntroductionSafety Notations Practices and Laws Safety DecalsRequired Operator Training Safety Rules Page Page Controls and Features OperationChoke Prior to Starting the Unit Operating SuggestionsDriving the Tractor Starting the EngineMowing Operation Hillside Operation MowingVertical Mowing Unit Pushing or Towing InstructionsRear Mower AssemblyTractor SeatSteering Wheel Engine Crankcase Wing MowersWing Mower Lift Hydraulic OILBattery Service and AdjustmentsTraction Pedal Adjustments Lower Countershaft Chain Adjustmentt Upper Countershaft Belt AdjustmentParking Brake Adjustment Ground Speed ControlReel to Bedknife Adjustment Height of CUT AdjustmentReel END Play Adjustment Backlapping Procedure Vertical Mowing Unit Blade ChangingGrinding Procedure Lapping CompoundAssembly and Disassembly MaintenanceGeneral Maintenance Charging a BatteryEngine Fuel Filter Jumper CablesBelts EngineHydraulic OIL Filter Bedknife ReplacementLubrication Symbols Frequency Location Type No. Tires StorageGeneral Instructions Starting the Engine After StorageTractor will not Move TroubleshootingEngine will not Start Reel will not TurnSpecifications EngineTwo-Year Limited Turf Products Warranty Exclusions Items Not Covered by This Warranty

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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