Exmark 920 manual Removing the Shim

Page 44

Maintenance

Figure 32

1.

Armature

5.

Brake spacer

2.

Field shell

6.

Re-gap shim

3.

Rotor

7.

Brake pole

4.Brake mounting bolt

Removing the Shim:

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake. Allow the machine to cool completely before starting these instructions.

2.Using a pneumatic line, blow out any debris from under the brake pole and around the brake spacers.

3.Check the condition of the wire harness leads, connectors, and terminals. Clean or repair as necessary.

4.Verify that 12V is present at the clutch connector when the PTO switch is engaged.

5.Measure the gap between the rotor and armature. If the gap is greater than .04 inch (1 mm), proceed with the following steps:

A.Loosen both brake mounting bolts one-half to one full turn (see Figure 33).

Note: Do Not remove the brake pole from the field shell/armature. The brake pole has worn to match the armature and needs to continue to match after the shim is removed to ensure proper brake torque.

Figure 33

1. Brake mounting bolt

2. Shim

B.Using needle nose pliers, or by hand, take hold of the tab and remove the shim (Do Not discard the shim until proper clutch function has been confirmed).

C.Using a pneumatic line, blow out any debris from under the brake pole and around the brake spacers.

D.Re-torque each bolt (M6 x 1) to 10 ft-lb (13 N-m) +/-0.5 ft-lb (0.7 N-m).

E.Using a 0.010 inch thick feeler gauge, verify that a gap is present between the rotor and armature face on both sides of the brake pole as shown. (Due to the way the rotor and armature faces wear (peaks and valleys) it is sometimes difficult to measure the true gap.)

G011733

1

Figure 34

1.Feeler gauge

44

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Contents Lazer Z S-SERIES California Introduction Contents Safety Safety Alert SymbolSafe Operating Practices TrainingSafety Operation Using the Rollover Protection System Rops Slope OperationMaintenance and Storage For Kohler EFI Electronic Fuel Injection Units Safety and Instructional Decals 109-7232 109-8483 116-0752 PTO Switch Symbols Systems SpecificationsModel Numbers Seat Hydrostatic Ground Drive SystemTires & Wheels Cutting DeckDimensions Overall WidthOverall Length Overall HeightWheel Base Center of Caster Tire to Center of Drive Tire Curb WeightTread Width Center to Center of Tires, Widthwise Accessory Weight Table Worksheet Torque RequirementsProduct Overview OperationControls Motion Control LeversIgnition Switch Choke Control All Units Except Kohler EFIThrottle Control Brake LeverDrive Wheel Release Valves Fuel Shut-Off ValveFuel Gauge Pre-Start Operating Instructions Raise the Rollover Protection System RopsOpen the Fuel Shut-Off Valve Starting the EngineEngaging the PTO Disengaging the PTOStopping the Engine Driving the MachineAdjusting the Cutting Height Driving ForwardAdjusting the Anti-Scalp Rollers Loading a Unit TransportingTransporting a Unit Maintenance Recommended Maintenance SchedulesCheck Battery Charge Check Engine Oil LevelRecommended Jump Starting Procedure Do Not jump start a weak battery if these conditions existCheck Mower Blades Check Seat Belt Check Safety Interlock SystemCheck Rollover Protections Systems Roll Bar Knobs Service Air Cleaner Check for Loose HardwareChange Engine Oil Check Hydraulic Oil LevelCheck Tire Pressures Check Condition Of BeltsLubricate Grease Fittings Lubricate Caster Wheel HubsLubricate Brake Handle Pivot Lubricate Deck Lift PivotCheck Spark Plugs Change Fuel FilterWheel Hub Slotted Nut Torque Specification Change Hydraulic System Filter and FluidCheck Spark Arrester if equipped Thread Locking AdhesivesCopper-Based Anti-seize Dielectric GreaseAdjustments Deck LevelingPump Drive Belt Tension Deck Belt TensionAdjusting the Parking Brake Left Hand Brake ShownElectric Clutch Adjustment Removing the Shim Motion Control Linkage Adjustment Motion Control Handle Adjustment Motion Control Damper AdjustmentMotion Control Neutral Lock Pivot Adjustment Caster Pivot Bearings Pre-Load Adjustment Adjusting the TiltClean Engine and Exhaust System Area Remove Engine Shrouds and Clean Cooling FinsClean Hydro Fan Cooling Fins Clean Debris From MachineBattery Disposal Troubleshooting Problem Possible Cause Corrective ActionSee Drive Wheel Release Valves section Troubleshooting Schematics Diagram All units except Kohler EFISchematics Electrical Logic Schematic All units except Kohler EFI Schematics Hydraulic Diagram General Warranty Conditions and Products Covered Page 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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920 specifications

The Exmark 920 is an exceptional piece of equipment tailored for professionals and enthusiasts alike. Designed with an emphasis on performance and reliability, this mower embodies the pinnacle of lawn care technology. Known for its robust construction, the Exmark 920 is equipped with a powerful engine, ensuring efficient and effective mowing even in demanding conditions.

One of the standout features of the Exmark 920 is its cutting deck. With a 52-inch or 60-inch mower deck option, it allows users to cover a large mowing area quickly. The deck is crafted from high-strength steel, providing durability and longevity while maintaining a lightweight design that enhances maneuverability. Innovative blade design promotes superior airflow for an even cut, preventing clumping and ensuring a polished finish across various grass types.

The Exmark 920 utilizes advanced technology, including the innovative RED Technology, which enhances engine performance by optimizing power consumption. This results in reduced fuel consumption while maintaining the required power output for demanding tasks. Additionally, the mower’s intuitive controls include a user-friendly interface, allowing for easy adjustments and settings, catering to the varying needs of different lawn types and conditions.

Another notable feature of the Exmark 920 is its all-day comfort design. With an ergonomic seat and advanced suspension system, operators can tackle long mowing sessions without discomfort. The padded seat is adjustable, providing maximum support to minimize fatigue, while the suspension system absorbs bumps and uneven terrain for a smoother ride.

Furthermore, the Exmark 920 prioritizes serviceability. Easy access points for maintenance and a well-designed layout ensure that routine tasks, such as oil changes and blade replacements, can be completed efficiently. The model also comes equipped with LED headlights for improved visibility during early morning or late evening mowing.

In summary, the Exmark 920 is a sophisticated mower combining power, advanced technology, and design for comfort and utility. Its high-performance engine, durable cutting deck, user-friendly controls, and serviceable layout make it an ideal choice for anyone seeking to achieve a well-manicured lawn with professional results. Whether for commercial or residential use, the Exmark 920 stands out as a leading option in the market, enabling users to tackle any mowing challenge with confidence and ease.
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