Specications

Specications

ModelNumbers

SerialNos:790,000andHigher
NAV20KC;NAV27KC

Systems

Engine
•EngineSpecications:SeeyourEngineOwner’s
Manual
•RPM:FullSpeed:3600±50RPM(NoLoad)
Idle:1500RPM
FuelSystem
•Capacity:7.5gal.(28L)
•TypeofFuel:Regularunleadedgasoline,87
octaneorhigher.
•FuelFilter:In-line30MicronKohlerP/N
2405010.
•FuelShut-OffValve:1/4turnincrementsin-line
valvebyfuellter.
ElectricalSystem
•ChargingSystem:FlywheelAlternator
•ChargingCapacity:15amps
•BatteryType:BCIGroupU1
•BatteryVoltage:12Volt
•Polarity:NegativeGround
•Fuses:Two20ampandone30ampbladetype
•SafetyInterlockSystem:
–PTOmustbedisengaged,brakeengaged,and
speedcontrolleverinneutralpositiontostart
engine.(Itisnotnecessaryfortheoperatorto
beintheseattostarttheengine.)
–OperatormustbeinseatwhenPTOis
engaged,brakeisdisengaged,orspeedcontrol
leverismovedoutofneutralorenginewill
stop.
–Enginewillstopinthefollowingconditions:
◊Ifthespeedcontrolleverismovedfrom
neutralpositionwhilebrakeisengaged.
◊IfthePTOisengagedwhilethehopper
istiltedup.
OperatorControls
•SteeringandMotionControl:
–SpeedControllever,locatedonRHconsole,
setsmaximumforwardspeed.
–Steeringlevers,centeredinfrontoftheseat,
controlthespeedanddirectionoftravelof
therespectivedrivewheels.
–Movingspeedcontrolleverrearwardtothe
neutralpositionplacesthedrivesystemin
neutral.
Note:Theunitmaybemovedinreverse
whilethespeedcontrolisintheneutral
positionbypullingbackonthesteeringlevers.
•PTOEngagementLever:EngagesdrivetoPTO
(mowerdeck)andblower.
•ParkingBrakeLever:Pullbacktoengageparking
brake.
Seat
•Type:Standardseatwithhighback,foampadded
(internalsuspension).
•Mounting:Seatishingedtotiltupforaccessto
hydraulicpumpsandothercomponents.Theseat
isheldinthetiltedpositionwithalink.
•Armrests:None.
•SeatSafetySwitch:Internaltothebottomseat
cushion,nonserviceable.Timedelaymodule
incorporatedintotheSafetyInterlockSystem
eliminatesroughgroundcut-outs.
HydrostaticGroundDriveSystem
•HydrostaticPumps:TwoHydroGearvariable
displacementpistonpumps.
•WheelMotors:HydroGearplanetaryreduction
motors.
•HydraulicOilType:UseExmarkPremiumHydro
oil.
•HydraulicOilCapacity:4.0qt.(3.8L)
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