McCulloch 966624901, MC025 Replacing the Trimmer Head, Carburetor Idle Speed Adjustment, Dust Cup

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10.Insert the ends of the lines through exit holes in the sides of the cover.

Line exit hole

Cover

11.Reinstall the spool and cover onto the trimmer head. Push until cover snaps into place.

REPLACING THE TRIMMER HEAD

1.Hold the dust cup with a wrench to keep the shaft from turning while removing and installing trimmer head.

Dust Cup

2.Remove trimmer head by turning counter- clockwise (looking from bottom of unit).

3.Thread replacement trimmer head onto the shaft by turning clockwise. Only tighten hand tight!

CARBURETOR IDLE SPEED ADJUSTMENT

WARNING: Keep others away when making idle speed adjustments. The trimmer head or any optional attachment will be spin- ning during most of this procedure. Wear your protective equipment and observe all safety precautions. After making adjustments, the trimmer head or any optional attachment must not move/spin at idle speed.

The carburetor has been carefully set at the factory. Adjustments may be necessary if you notice any of the following conditions:

S Engine will not idle when the throttle is released.

S The trimmer head or any optional attachment moves/spins at idle.

Make adjustments with the unit supported so the cutting attachment is off the ground and will not make contact with any object. Hold the unit by hand while running and making ad- justments. Keep all parts of your body away from the cutting attachment and muffler.

To adjust idle speed:

Allow engine to idle. Adjust speed until engine runs without trimmer head or any optional at- tachment moving or spinning (idle too fast) or engine stalling (idle speed too slow).

S Turn idle speed screw clockwise to increase engine speed if engine stalls or dies.

STurn idle speed screw counterclockwise to decrease engine speed if trimmer head or any optional attachment moves or spins at idle.

WARNING: Recheck the idle speed after each adjustment. The trimmer head or any optional attachment must not move or spin at idle speed to avoid serious injury to the operator or others.

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Contents Manual de Instrucciones Manuel d’Instructions English Español FrançaisIdentification of Safety Symbols Hazard zone for thrown objectsIdentification of Safety Symbols Operator Safety Safety RulesOptional Attachments Unit / Maintenance Safety Fuel SafetyLine Trimmer Safety Transporting and StorageBLOWER/VACUUM Safety Edger SafetyBrushcutter Safety Cultivator Safety Hedge Trimmer SafetyPole Pruner Safety Away from the operatorSnow Thrower Safety Know how to stop quicklyAnother Or brokenAssembly Installing Trimmer ATTACH- MentAdjusting the Assist Handle Attaching ShieldOperation HOW to Stop Your Unit HOW to Start Your UnitStarting a Cold Engine Starting a Warm EngineInstalling Optional ATTACH- Ments Operating PositionTrimmer Line Advance Eye Protection Long Pants Heavy Shoes Attachment CouplerCutting Methods Inches 8 cm above groundMaintenance Service and Adjustments Replacing the LineReplacing the Trimmer Head Carburetor Idle Speed AdjustmentDust Cup Seasonal Storage Fuel SystemEngine OtherTroubleshooting Table Cause Remedy Limited Warranty Harris CornersCanada, contact Ligations The U.S. EnvironmentalIntermediate 125 hours Extended 300 hours