Exmark NAV20KC, NAV27KC manual Operator Controls, Hydrostatic Ground Drive System

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2.4.6Safety Interlock System:

PTO must be disengaged, brake engaged, and speed control lever in neutral position to start engine. (It is not necessary for the operator to be in the seat to start the engine.)

Operator must be in seat when PTO is engaged, brake is disengaged, or speed control lever is moved out of neutral or engine will stop.

Engine will stop in the following conditions:

If the speed control lever is moved from neutral position while brake is engaged.

If the PTO is engaged while the hopper is tilted up.

2.4.7Tilt Switch: Shuts off the engine when the unit is tilted more than 60° from horizontal.

2.5OPERATOR CONTROLS

2.5.1Steering and Motion Control:

Speed Control lever, located on RH console, sets maximum forward speed.

Steering levers, centered in front of the seat, control the speed and direction of travel of the respective drive wheels.

Moving speed control lever rearward to the neutral position places the drive system in neutral.

NOTE: The unit may be moved in reverse while the speed control is in the neutral position by pulling back on the steering levers.

2.5.2PTO Engagement Lever: Engages drive to PTO (mower deck) and blower.

2.5.3Parking Brake Lever: Pull back to engage parking brake.

2.6SEAT

2.6.1Type: Standard seat with high back, foam padded (internal suspension).

2.6.2Mounting: Seat is hinged to tilt up for access to hydraulic pumps and other components. The seat is held in the tilted position with a link.

2.6.3Seat Safety Switch: Incorporated into the Safety Interlock System. Time delay seat switch eliminates rough ground cut-outs.

2.6.4Armrest: None

2.7HYDROSTATIC GROUND DRIVE SYSTEM

2.7.1Hydrostatic Pumps: Two Hydro Gear PJ 12 cc variable displacement piston pumps.

2.7.2Wheel Motors: Hydro Gear planetary reduction motors.

2.7.3Hydraulic Oil Type: Use Mobil 1 15W-50 Synthetic Motor Oil.

2.7.4Hydraulic Oil Capacity: 4.0 qt. (3.8 L.)

2.7.5Hydraulic Filter: Replaceable cartridge type.

P/N 109-0071: 25 microns, 10 psi bypass (Summer use above 32° F (0°C))

P/N 1-523541: 40 microns, 18 psi bypass (Winter use below 32° F (0°C))

2.7.6Speeds: 0-7.0 mph (11.3 Km/hr) forward 0-5.5.mph (8.6 km/hr) reverse

2.7.7Drive wheel release valves allow machine to be moved when engine is not running.

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Contents For Serial Nos 510,000 & Higher Potential Hazard Exmark Parts PLUS→ Program Operators Manual Table of Contents Safety Your Safety is InvolvedSafety Alert Symbol TrainingCarbon monoxide can kill you Potential Hazard Operation Safe Zone for Mowing Maintenance and Storage Potential Hazard Safety Signs HOT Specifications EngineFuel System Electrical SystemOperator Controls Hydrostatic Ground Drive SystemAssembly Instructions DimensionsUncrate Mower Service Battery TiresService Engine Install Drive WheelsCheck Tire Pressure Operation Instructions Service Hydraulic OILControls Push the lever forward and down to disengage the brake PRE-START Operating InstructionsPotential Hazard Disabling Hopper Auto Door Open TransportingHopper Screen Removal Do not drive a unit on a public street or roadway Maintenance & Adjustments Periodic MaintenanceService Interval Daily Service Interval MonthlyService Interval Daily or more often in dry conditions Service Interval 100 hrs Lubrication Chart Service Interval 40 hrService Interval 40 hrs Service Interval Refer to chartService Interval Once Yearly Service Interval 160 hrsService Interval 80 hrs Bushing Pivot LocationsService Interval As Required Service Interval After First 250 hrs Then yearly thereafterService Interval 500 hrs AdjustmentsPTO Belt Routing PTO Belt Replacement Belt Guide AdjustmentBrake Bolt Adjustment Throttle Tension Adjust steering levers Speed Control Lever AdjustmentTracking Adjustment Forward Stop Bolt AdjustmentSteering Control Lever Response Adjustment Drive Pulley AlignmentHopper Door Adjustment Door ClosingWaste Disposal PTO Brake Spring AdjustmentMotor OIL Disposal Mercury Switch Disposal Battery DisposalTrouble Shooting Mower Pulls Left or Right W/LEVERS Fully ForwardMower Cuts Unevenly Engine will not StartEngine Troubleshooting Table ProblemElectrical Diagram Hydraulic Diagram Year Limited Warranty Page See EXMARK’S Complete Line of Accessories