Exmark MPKA21 manual Adjusting the Self-Propel Drive Self-Propelled Units Only

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Maintenance

Adjustments

Note: Wait for all moving parts to stop and remove spark plug wire before servicing, cleaning, or making any adjustments to the unit.

•For Blade Brake Clutch Units:

1.Loosen the cable clamp screw until the cable conduit slides (see Figure 31).

Adjusting the Self-Propel

Drive

(Self-Propelled Units Only)

If the lawn mower does not self-propel or has a tendency to creep forward when the control bar is released, adjust the wheel drive control knob on the rear of the gear box.

1.Close the door in the lawn mower housing and remove the grass bag.

2.If the lawn mower does not self propel, rotate the control knob clockwise 1/2 turn to tighten the belt.

If the lawn mower creeps forward, rotate the knob 1/2 turn counterclockwise to loosen the belt

Figure 30

1.Control knob

Adjusting the Blade Brake Cable

Service Interval: Every 100 hours

Adjust whenever a new blade brake cable assembly is installed.

1.Stop the engine and wait for all moving parts to stop.

2.Disconnect the wire from the spark plug.

Figure 31

1. Spring

3. Cable clamp screw

2.Cable conduit

2.Pull the cable to remove the slack, but Do Not put tension on the spring.

3.Tighten the screw to lock the adjustment in place.

4.Connect the wire to the spark plug.

•For Self-Propelled Units without a Blade Brake Clutch:

1.Loosen the nut on the cable bracket (see Figure 31).

2.Insert a 3/16 to 1/4 inch (5 to 6 mm) object between the brake control lever and the handle.

3.Turn the cable adjuster on the brake cable until you remove the slack.

4.Tighten the jam nut.

5.Connect the wire to the spark plug.

•For Hand-Push Units:

1.Loosen the jam nut on the blade brake cable clamp (see Figure 31).

2.Insert a 3/16 to 1/4 inch. (5 to 6 mm) object between the brake control lever and the handle. Pull down on the cable conduit until you remove the slack from the wire.

3.Tighten the nut.

4.Connect the wire to the spark plug.

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Contents Metro California Introduction Contents Training SafetySafety Alert Symbol Safe Operating PracticesSafety Operation Slope Operation Maintenance and StorageSafety and Instructional Decals 77-0500 109-8190 Systems SpecificationsDimensions Model NumbersOverall Length and Height at 4 inch Cutting Height Product OverviewControls OperationFuel Shut-Off Valve Pre-StartStarting the Engine Handle AdjustmentOperating Instructions Open the Fuel Shut-Off ValveAll Kawasaki Units Stopping the EngineUsing the Discharge Tunnel Using the Self-Propel Drive Self-Propelled Units OnlyAdjusting the Cutting Height Test Using the Grass BagUsing the Grass Bag Operating Tips Cutting Leaves Recommended Maintenance Schedules MaintenanceCheck the Mower Blade Check Engine Oil LevelTip the lawn mower onto its right side see and Figure Check for Loose Hardware Service Air Filter Kawasaki UnitsService Air Filter Honda Units Changing the Oil Filter Kawasaki Units Only Change Engine OilCheck Condition Of Belt Self-Propelled Units Only Servicing the WheelsLubricate the Pivot Arms Check Spark Plugs Lubricate the Gear Case Self-Propelled Units OnlyAdjusting the Blade Brake Cable Adjusting the Self-Propel Drive Self-Propelled Units OnlyCleaning the Discharge Tunnel and Plug Clean Grass Build-Up Under DeckCleaning the Blade Brake Clutch Shield Cleaning Under Belt Cover Self-Propelled Models OnlyMotor Oil Disposal Waste DisposalGeneral Storage Information StoragePreparing the Fuel System Preparing the EngineProblem Possible Cause Corrective Action TroubleshootingTroubleshooting Exmark Commercial Turf Equipment Service Record See EXMARK’S Complete Line of Accessories and Options
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