Exmark 4500-501 Rev A Brake Adjustment, Electric Clutch Adjustment, Reverse Indicator Adjustment

Page 41

Maintenance

Figure 19

1.

Lever down

6.

Remove pin to adjust

 

(disengaged)

 

rod length for additional

 

 

 

brake adjustment

2.

Lever up (engaged)

7.

Trunnion roller

3.

Nyloc nut below trunnion

8.

Spring retainer bracket

 

roller

 

 

4.

Nyloc nut below spring

9.

2 13/16 inches (7.1 cm)

5.

1/8 to 3/16 inch (3.2 to

10.

Jam nut above trunnion

 

4.8 mm)

 

roller

 

 

 

 

Brake Adjustment

1.Check for brake link 2 13/16 inches (7.1 cm) measurement as described in the Brake Link Adjustment section.

2.Engage the brake lever (lever up). The space between the brake spring bracket and the nyloc nut under the spring should measure 1/8 inch to 3/16 inch (3.2–4.8 mm).

3.If adjustment is necessary, loosen jam nut above the trunnion roller. Adjust the nyloc nut under the trunnion roller until distance listed above exists between the spring retainer bracket and the adjacent nyloc nut. Tighten the jam nut above the trunnion roller.

4.If the correct gap can no longer be achieved because there is no clearance between the nyloc nut below the spring and the jam nut above the trunnion or there are no threads left on the bottom nyloc nut, the length of the brake rod can be adjusted. Remove a pin from a yoke at either end of the brake rod and lengthen (or shorten) the brake rod until the correct gap can be achieved by following steps 2 and 3.

Electric Clutch Adjustment

No adjustment necessary.

Reverse Indicator

Adjustment

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Unhook seat latch and tilt seat forward.

3.Begin with either the left or right motion control lever. Move lever to the neutral position and pull lever back until the clevis pin (on arm below pivot shaft) contacts the end of the slot (just beginning to put pressure on spring). (Figure 20).

4.Check where lever is relative to notch in console (should be centered allowing lever to pivot outward to the neutral lock position).

5.If adjustment is needed, loosen the nut against the yoke and while applying slight rearward pressure on the motion control lever, turn the head of the adjustment bolt in the appropriate direction until lever is centered (keeping rearward pressure on the lever will keep the pin at the end of the slot and allow the adjustment bolt to move the lever to the appropriate position). Tighten lock nut.

6.Repeat on opposite side of unit.

Figure 20

1.

Turn bolt here

4.

Yoke

2.

Lever centered in notch

5.

Loosen here

3.

End of slot

6.

Reverse indicator

 

 

 

 

41

Image 41
Contents Lazer Z XS California Introduction Contents Safety Alert Symbol SafetySafe Operating Practices TrainingOperation Slope Operation Maintenance and Storage Using the Rollover Protection System RopsSafety Safety and Instructional Decals 103-0223 103-0261 103-1798 103-2076 103-7218 107-2102 Safety 109-2264 109-2478 109-2951 109-3148 Safety 107-9866 Systems SpecificationsModel Numbers Cutting Deck Hydrostatic Ground Drive SystemTires & Wheels Torque Requirements DimensionsControls Product OverviewOperation PTO Engagement Switch Tracking Adjustment KnobCoolant Temperature Gauge Hour MeterPre-Start Raise the Rollover Protection System Rops Operating InstructionsOpen the Fuel Shut-Off Valve Starting the EngineDisengaging the PTO Engaging the PTOStopping the Engine Driving the MachineDriving Forward Adjusting the Cutting HeightAdjusting the Anti-Scalp Rollers Loading a Unit TransportingTransporting a Unit Operation Recommended Maintenance Schedules MaintenanceCheck Engine Oil Level Check Battery ChargeCheck Mower Blades Check Safety Interlock SystemService Air Cleaner Check Rollover Protections Systems Roll Bar PinsCheck Seat Belt Check for Loose HardwareCheck Hydraulic Oil Level Change Engine OilCheck Tire Pressures Check Condition Of BeltsLubricate Caster Wheel Hubs Lubricate Grease FittingsLubricate Brake Rod Bushings Lubricate Brake Handle PivotLubricate Motion Control Bronze Bushings Drain Fuel Filter/Water SeparatorChange Fuel Filter/Water Separator Wheel Hub Slotted Nut Torque SpecificationChange Inline Fuel Filter Change Hydraulic System FilterChange Engine Coolant Check Engine Coolant LevelMobil HTS Grease Or Food-Grade Anti-seize Fuel Tank Mounting Hardware SpecificationsThread Locking Adhesives Deck Leveling Copper-Based Anti-seizeDielectric Grease Pump Drive Belt Tension Mule Drive Belt Tension AdjustmentBrake Link Adjustment Belt Guide AdjustmentDeck Belt Tension Alternator Belt TensionReverse Indicator Adjustment Brake AdjustmentElectric Clutch Adjustment Motion Control Linkage Adjustment Clutch Shim Caster Pivot Bearings Pre-Load AdjustmentMotion Control Damper Adjustment Removing the Shim Feeler gauge Cleaning of the Radiator Clean Engine Cooling SystemClean Debris From Machine Remove Accumulated Debris from EngineBattery Disposal Clean Grass Build-Up Under DeckWaste Disposal Motor Oil DisposalProblem Possible Cause Corrective Action TroubleshootingTroubleshooting Troubleshooting Electrical Ignition SwitchElectrical Logic Schematic Hydraulic Diagram Exmark Commercial Turf Equipment Page Page Service Record Page Page See EXMARK’S Complete Line of Accessories and Options