Great Dane GDRZ61-25KAE, GDRZ72-27KHE, GDRZ61-28KHE, GDRZ61-26KHE, GDRZ52-25KHE, GDRZ52-23KAE MX15328

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SERVICE MOWER

A

MX15328

4.Check the engine-to-deck drive belt tension. The belt should deflect a maximum of 13 mm (1/2 in.) when a force of 4.5 kg (10 lb) is applied to the center of the longest span.

When properly adjusted, there would be approximately a 2

mm(1/16 in.) gap between the spring coils.

•To increase belt tension: Turn nut (A) clockwise.

•To decrease belt tension: Turn nut (A) counterclockwise.

Checking and Adjusting Spindle Drive Belt Tension - 72-Inch Mower Deck

1.Park machine safely. (See Parking Safely in the Safety section.)

2.Adjust the mower deck for the lowest cutting height, and lower the deck.

3.Raise foot platform.

A

B

MX15327

4.Check the spindle drive belt (A) tension. The belt should deflect a maximum of 13 mm (1/2 in.) when a force of 4.5 kg (10 lb) is applied to the center of the longest span.

When properly adjusted, there would be approximately an 2 mm (1/16 in.) gap between the spring coils.

•To increase belt tension: Turn nut (B) clockwise.

•To decrease belt tension: Turn nut (B) counterclockwise.

Removing and Installing Mower Deck Drive Belt - 48-, 52- and 61-Inch Mower Deck

1.Park machine safely. (See Parking Safely in the Safety section.)

2.Raise foot platform.

3.Remove mower deck drive belt covers.

A

B

MX15317

4.Release mower deck drive belt tension by turning the tension adjuster nut (A) counterclockwise.

5.Remove mower deck drive belt (B).

Service Mower - 45

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Contents OPERATOR’S Manual Introduction Using Your Operator’s ManualSpecial Messages Record Identification Numbers Product IdentificationTable of Contents Understanding The Machine Safety Labels SafetyM131748, MX15340 Emission Compliance Period Emission Control System Certification LabelCertification Canadian Electromagnetic Compatibility EMC ComplianceOperating Safely Operator Training RequiredChecking Mowing Area Using a Spark ArrestorParking Safely Rotating Blades are DangerousAvoid Tipping Keep Riders OffChecking Wheel Bolts Wear Appropriate Clothing Practice Safe MaintenanceDriving Safely on Public Roads Avoid High-Pressure Fluids Tire SafetyPrevent Fires Handling Waste Products and Chemicals Handling Fuel SafelyFuel and fuel vapors are highly flammable Testing Safety Systems Daily Operating ChecklistOperating Operator Station ControlsTesting Park Brake Switch Testing PTO SwitchTesting Neutral Start Switch Testing Seat SwitchAdjusting Mower Deck Cutting Height Adjusting SeatMounting and Dismounting Machine Safely Raising and Lowering Operator SeatUsing the Park Brake Adjusting Mower Deck Anti-Scalp WheelsUsing the PTO Using the Key SwitchUnlocking Park Brake Engage PTOUsing the Hourmeter Using the Throttle LeverUsing the Choke Carbureted Engines Only Using the Motion Control LeversNeutral Lock Position Optional Over the Lap Levers Reverse Forward Gentle Right TurnGentle Left Turn Sharp Left TurnStarting the Engine Stopping the Engine Engaging MowerTransporting Machine Using Hydraulic Pump Free-Wheel ValvesMowing Tips Picture Note Left pump shownDismounting to Inspect Mower Mowing Travel SpeedsAvoid Damage to Plastic and Painted Surfaces Parts Replacement PartsPart Numbers Service Intervals Grease Service LubricationSpray Lubricant Lubrication PointsPicture Note 72-inch mower deck Picture Note 48-, 52- and 61-inch mower decksService Engine Cleaning Engine Air Intake Screen and Fan Checking and Cleaning Air Filter ElementsCleaning Engine Oil Cooler Kohler Engines Oil Capacity With Filter DryReplacing Fuel Filter Carbureted Engines Checking Spark Plug Adjusting Carburetor Carbureted EnginesReplacing Fuel Filter Fuel Injected Engines Picture Note Kawasaki engine shownPriming Fuel Injectors Fuel Injected Engines Troubleshooting the Kohler Electronic Fuel Injection SystemService Engine Hydraulic Oil Service TransmissionChecking Hydraulic Oil Level Changing Hydraulic Oil and FilterCleaning Hydraulic Pump Cooling Fins Removing and Installing Traction Drive BeltNeutral Creep Adjustment Checking and Adjusting Motion Control LinkagesCheck Maximum Speed Drift Maximum Speed Drift Adjustment Hydraulic System Hose Routing Cooling Orifice Hydraulic System SchematicRemove and Install Front Caster Wheels Service Steering & BrakesServicing Front Caster Wheel Roller Bearings Chariot Servicing Front Caster Wheel Roller Bearings Chariot LXServicing Caster Spindle Bearings Adjusting Front Caster Spindle BearingCheck Alignment Height Adjustment ProcedureAlignment Procedure Adjusting Park BrakeRemoving and Installing Mower Deck Foot Plate Service MowerRemoving and Installing Mower Deck Belt Shields Leveling Mower Deck Adjusting Level Side-to-Side Checking Level Side-to-Side Picture Note Discharge chute raised for photo clarityAdjust Thrust Arm-to-Stop Rod Clearance Transport Position Checking and Adjusting Cutting HeightAdjust Assist Spring Tension Adjusting Deck Lift Assist Spring TensionCheck Spring Tension MX15328 MX15318 Checking and Replacing Mower Blades Balancing Blades Sharpening BladesReplacing Mower Blades Replacing Mower Spindle Bearings 72-Inch Mower Deck Service Mower Removing and Installing the Battery Service ElectricalCleaning Battery and Terminals Booster Battery Disabled Vehicle Battery Using Booster BatteryReplacing Fuse Carbureted Engines Replacing Fuses Fuel Injected EnginesBurnishing the PTO Clutch Wiring Schematic Carbureted Engines Wiring Schematic 26 HP Fuel Injected Engine Wiring Schematic 28 HP Fuel Injected Engine Filling Fuel Tank Service MiscellaneousChecking Tire Pressure Tire Size PressureCleaning and Repairing Metal Surfaces Remove and Install Rear Drive WheelsUsing Troubleshooting Chart TroubleshootingCheck Troubleshooting Electrical System Park Brake MachineSteering Mower Deck Storage Storing SafetyPreparing Machine for Storage Preparing Fuel and Engine for StorageAssembly Install Seat Install Motion Control LeversCheck Safety System Lubricate MachineInitial Adjustments Specifications Height Adjustment Increments mm 1/2 Index Belt Shields, Removing and Installing Mower DeckSpindle Bearings, Replace, 48-, 52- and 61-In. Decks Record Service Dates Service Record GD