Exmark 850 manual Pre-Start, Operating Instructions

Page 18

Operation

Drive Wheel Release Valves

Located on the top left front corner of hydrostatic pumps.

Drive wheel release valves are used to release the hydrostatic drive system to allow the machine to be pushed without the engine running. Tilt seat up to gain access to pumps.

With a 7/16 wrench, turn both valves one turn counterclockwise to release drive system. Turn clockwise to reset system. Do Not overtighten. Do

Not tow machine.

Tracking Adjustment Knob

Located under the seat on the left pump control link.

Rotating this knob allows fine tuning adjustments so that the machine tracks straight with the drive levers in the full forward position.

Run unit at 3/4 speed for at least 5 minutes to bring hydraulic oil up to operating temperature. Stop machine and wait for all moving parts to stop. Engage park brake. Tilt seat forward to gain access to the tracking knob. Rotate the knob towards the right to steer right and rotate towards the left to steer left. Adjust in 1/8 turn increments until the machine tracks straight. Check that the machine does not creep when in neutral with the park brakes disengaged.

Important: Do Not rotate the knob too far, as this may cause the machine to creep in neutral. Refer to the Motion Control Linkage Adjustment section in Maintenance.

PTO Engagement Lever

Located immediately left of the left console.

Lever must be moved up to the “ROTATE” position to engage the PTO and blower drives. Lever is moved down to the “STOP” position to stop the drives.

Engine Oil Temperature Light and Buzzer

Located on the right console.

The engine oil temperature light monitors the temperature of the engine oil. An illuminated engine oil temperature light and intermittent buzzing sound signals the engine is overheating.

Pre-Start

Fill fuel tanks. For best results use only clean, fresh regular grade unleaded gasoline with an octane rating of 87 or higher.

Important: Never use methanol, gasoline containing methanol, gasohol containing more than 10% ethanol, premium gasoline, or white gas because the fuel system could be damaged.

Do Not add oil to gasoline.

Do Not overfill fuel tank. Fill the fuel tank to the bottom of the filler neck. The empty space in the tank allows gasoline to expand. Overfilling may result in fuel leakage or damage to the engine or emission system (if equipped).

Make sure you understand the controls, their locations, their functions, and their safety requirements.

Refer to the Maintenance section and perform all the necessary inspection and maintenance steps.

Operating Instructions

Open the Fuel Shut-Off Valve

The fuel shut-off valve is located on the right side of unit in fuel line next to the fuel filter. Raise the hopper to access. Rotate the valve 1/4 counterclockwise to turn on fuel.

Starting the Engine

1.Move the speed control lever to the neutral position.

2.Pull up and back on the parking brake lever to engage the parking brake.

3.Push the PTO engagement lever down to the “STOP” position.

Note: It is not necessary for the operator to be in the seat to start the engine.

4.Place the throttle midway between the “SLOW” and “FAST” positions.

5.On a cold engine, push the choke lever forward into the “ON” position.

On a warm engine, leave the choke in the “OFF” position.

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Contents Navigator California Introduction Contents Safe Operating Practices SafetySafety Alert Symbol TrainingSafety Operation Slope Operation Maintenance and Storage Safety Safety and Instructional Decals 103-9034 103-9724 109-4273 109-4638 109-7318 116-0404 Safety Specifications Model NumbersSystems Dimensions Curb Weight Product OverviewTorque Requirements Operation ControlsPre-Start Operating InstructionsStopping the Engine Engaging the PTODisengaging the PTO Driving the MachineClearing Hopper Screen TransportingEmptying Hopper Transporting a UnitLoading a Unit Maintenance Recommended Maintenance SchedulesCheck Battery Charge Recommended Jump Starting ProcedureCheck Engine Oil Level Check Safety Interlock System Do Not jump start a weak battery if these conditions existService Air Cleaner Check for Loose HardwareChange Engine Oil Check Condition Of Belts Check Hydraulic Oil LevelCheck Tire Pressures Lubricate Grease FittingsService Interval Yearly Lubricate Rear Caster Wheel HubsLubricate Steering Linkage Rod Ends Lubricate Brake Handle PivotLubricate Brake Rod Bushings Lubricate Hopper ActuatorCheck Wheel Hub Locknuts Fuel Tank Mounting Hardware SpecificationsChange Hydraulic System Filter Check Wheel Lug NutsPTO Drive Belt Tension PTO Belt ReplacementDielectric Grease Pump Drive Belt TensionPump Drive Belt Replacement Belt Guide AdjustmentAdjust Safety Switch Brake AdjustmentAdjust Speed Control Lever Tension Speed Control Linkage Adjustment Response Adjustment Steering Control LeverTracking Adjustment PTO Drive Pulley AlignmentPump Drive Pulley Alignment Rear Caster Pivot Bearings Pre-Load Adjustment Hopper Door AdjustmentPTO Brake Spring Adjustment Clean Debris From Machine Clean Engine and Exhaust System AreaRemove Engine Shrouds and Clean Cooling Fins Waste DisposalTroubleshooting Problem Possible Cause Corrective ActionTroubleshooting Schematics Electrical DiagramElectrical Logic Schematic StartHydraulic Diagram Exmark Commercial Turf Equipment Page Service Record Date Description of Work Done Service Done ByPage This page may be copied for personal use See EXMARK’S Complete Line of Accessories and Options
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0, 850 specifications

The Exmark 850 is a top-of-the-line commercial mower, known for its durability, efficiency, and advanced features, making it a favorite among landscaping professionals. With a powerful engine and innovative technology, the Exmark 850 is designed to tackle tough mowing tasks while ensuring a high-quality cut.

One of the standout characteristics of the Exmark 850 is its robust engine performance. Powered by a reliable Kohler or Kawasaki engine, it delivers exceptional horsepower, enabling it to handle various terrains and grass types with ease. The engine is designed for fuel efficiency, allowing operators to work longer hours without frequent refueling, ultimately boosting productivity on the job.

The cutting deck of the Exmark 850 is engineered with precision, utilizing Exmark's proprietary UltraCut technology. This technology ensures that grass is cut evenly and efficiently, resulting in a clean, manicured appearance. The deck height is easily adjustable, allowing users to quickly change settings to accommodate different lawn conditions and preferences.

Another key feature is the innovative suspension system that enhances ride quality. The Exmark 850 is equipped with a heavy-duty front axle and high-performance suspension that absorbs bumps and uneven ground, allowing for a smoother mowing experience. This is especially beneficial for operators who spend long hours on the mower, reducing fatigue and improving comfort.

Ergonomics play a crucial role in the design of the Exmark 850. The operator station is thoughtfully crafted with optimal controls and comfortable seating, allowing for easy maneuverability and long-term use. The ergonomic handles and intuitive control layout make it easy for operators to navigate tricky landscapes, enhancing overall efficiency.

In terms of durability, the Exmark 850 is built to withstand the rigors of commercial use. The high-quality materials and construction ensure that this mower can handle challenging conditions, extending its lifespan and reducing maintenance needs. Additionally, Exmark offers an extensive warranty program, providing peace of mind for operators.

Safety features are also prioritized in the Exmark 850, with guards and shields designed to protect the operator while mowers are in use. These features also include emergency shut-off systems and blade brake systems, ensuring compliance with safety standards.

Overall, the Exmark 850 stands out as a high-performing, reliable, and efficient mower suitable for a variety of commercial landscaping tasks. With its powerful engine, advanced cutting technology, ergonomic design, and emphasis on durability and safety, it continues to be a top choice for professionals seeking high-quality lawn care equipment.