Exmark 4500-355 manual Neutral Lock Latch, Park Brake Lever, Choke Control, Throttle Control

Page 16

Operation

as shown in Figure 4, and the drive levers are released, the drive wheels are engaged in the forward direction.

Squeezing the left hand and/or right hand lever causes the left hand and/or right hand drive wheel respectively to slow down, stop, or reverse, depending on how far each drive lever is “squeezed”. Squeezing the drive levers beyond the neutral position causes the drive wheels to engage in the reverse direction regardless of the position of the neutral lock latches and the speed control lever.

Neutral Lock Latch

Located at the end of the handles.

The purpose of these latches is to allow the operator to lock the drive levers in a "neutral" position where neither of the drive wheels are engaged in either a forward or reverse direction (see Figure 4).

Park Brake Lever

Located on the right side of the unit above the hydraulic tank.

The brake lever engages the park brake on the drive wheels.

Pull the lever up and rearward to engage the brake.

Push the lever forward and down to disengage the brake.

When parking on a steep slope, the wheels must be chocked or blocked in addition to the brake being engaged. The unit must be tied down and brake engaged when transporting.

Park brake must be disengaged to move speed control out of neutral or engine will kill.

Choke Control

Located on the front left corner of the fuel tank support.

Choke is used to aid in starting a cold engine. The choke control is pulled out to be in the “ON” position and pushed in to be in the “OFF” position. Do Not run a warm engine with choke in the “ON” position.

Throttle Control

Located on the on the control console right side.

The throttle is used to control engine speed. Moving the throttle control forward will increase engine

speed and moving it to the rear will decrease engine speed. Moving the throttle forward into the detent is full position.

Speed Control Lever

Located in middle of control console.

The speed control lever controls the maximum forward speed and is infinitely variable from neutral 0–6.2 mph (10.0 km/hr).

Park brake must be disengaged to move speed control out of neutral or engine will kill.

“Off-Run” Switch

Located on the control console.

Turn the key to the “Run” position to allow the engine to be started. Turn the key to the “Off ” position to shut engine off.

Fuel Shut-Off Valve

Located in the fuel line midway between the tank and engine.

The fuel shut-off valve is used to shut off the flow of fuel when parking inside a building, during transportation to and from the job sites, and when the machine will not be used for a few days.

Rotate valve 1/4 turn clockwise to shut fuel off. Rotate valve 1/4 turn counterclockwise to turn fuel on.

Drive Wheel Release Valves

Located on the top rear corner of the hydrostatic pumps.

Drive wheel release valves are used to release the hydro-static drive system to allow the machine to be moved by hand without the engine running.

With a 5/8 wrench, turn both valves one turn counterclockwise to release the drive system.

Turn clockwise to reset the drive system. Do Not overtighten.

Tracking Adjustment Knob

Located on the right-hand side of the rear of the fuel tank support.

16

Image 16
Contents Viking Hydro California Introduction Contents Safety Safety Alert SymbolSafe Operating Practices TrainingSafety Operation Slope OperationMaintenance and Storage Safety Safety and Instructional Decals 103-1798 103-2076 103-2103 103-2196 103-2242 116-0404 103-2243 103-4935 103-5626 Model Numbers SpecificationsSystems Dimensions Torque RequirementsProduct Overview Operation ControlsOperator Presence Control OPC LeversOff-Run Switch Tracking Adjustment KnobNeutral Lock Latch Park Brake LeverPre-Start Operating InstructionsStopping the Engine Disengaging the PTODriving the Machine Transporting Transporting a UnitMaintenance Recommended Maintenance SchedulesCheck Mower Blades Check Engine Oil LevelReplacing the Discharge Deflector Check Safety Interlock System Check for Loose HardwareService Pre-Cleaner Element and Air Cleaner Change Engine OilCheck Hydraulic Oil Level Check Tire PressuresLubricate Grease Fittings Check Spark PlugsChange Fuel Filter Change Hydraulic System FilterHydraulic System Air Purge LevelWheel Hub-Slotted Nut Torque Specification Thread Locking AdhesivesMobil HTS Grease Or Food-Grade Anti-seize Copper-Based Anti-seizeAdjustments Adjusting the Cutting HeightAdjusting the Axle Position Adjusting the Number of Spacers below Caster Support Hub Adjusting the Cutting Height with Blade SpacersPTO Engagement Linkage Adjustment PTO Safety Switch AdjustmentEngine to Mower Deck Belt Adjustment Inch Deck Shown for Reference OnlyBelt Guide Adjustment Blade Brake AdjustmentPump Drive Belt Tension Adjustment Hydro Drive Linkage Adjustment Adjust Hydro Control Linkages Hydro Pump Spring Tension Setting Park Brake AdjustmentClean Engine Air Cooling System Remove Engine Shrouds and Clean Cooling FinsClean Grass Build-Up Under Deck Waste DisposalTroubleshooting Problem Possible Cause Corrective ActionTroubleshooting Schematics Wiring DiagramSchematics Exmark Commercial Turf Equipment Page Page See EXMARK’S Complete Line of Accessories and Options