McCulloch 250 B Service and Adjustments, Clean AIR Filter, Replace Spark Plug, Replacing the Line

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CLEAN AIR FILTER

A dirty air filter decreases engine perform- ance and increases fuel consumption and harmful emissions. Always clean after every 5 hours of operation.

1.Clean the cover and the area around it to keep dirt from falling into the carburetor chamber when the cover is removed.

2.Remove parts as illustrated.

NOTE: Do not clean filter in petrol or other flammable solvent to avoid creating a fire haz- ard or producing harmful evaporative emis- sions.

3.Wash the filter in soap and water.

4.Allow filter to dry.

5.Replace parts.

Button

Air Filter

Air Filter Cover

REPLACE SPARK PLUG

Replace the spark plug each year to ensure the engine starts easier and runs better. Set spark plug gap at 0,6 mm. Ignition timing is fixed and nonadjustable.

1.Twist, then pull off spark plug boot.

2.Remove spark plug from cylinder and dis- card.

3.Replace with Champion RCJ-6Y spark plug and tighten securely with a 19 mm socket wrench.

4.Reinstall the spark plug boot.

SERVICE AND ADJUSTMENTS

REPLACING THE LINE

1.Press the tabs on the side of the trimmer head and remove cover and spool.

Cover

Tab

Tap Button

2.Remove any remaining line.

3.Clean dirt and debris from all parts. Re- place spool if it is worn or damaged.

4.Replace with a pre-wound spool, or re- place line using a 4,5 meters length of 2,4 mm diameter McCulloch brand line.

5.When installing new line on an existing spool, hold the spool as shown in the il- lustration below.

6.Bend the line at the midpoint and insert the bend into the slot in the center rim of the spool. Ensure line snaps into position in the slot.

Slot

7.With your finger between the lines, wrap the lines evenly and firmly around the spool in a clockwise direction.

8.Position the lines in the guide slots.

Guide Slot

Guide

Slot

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

10.Place the spool in the cover.

Spool

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Contents Betriebsanweisung Manuel D’INSTRUCTIONSManual DE Instrucciones Primer bulb Identification What is WHAT?Safety Rules Identification of SymbolsUnit / Maintenance Safety Operator SafetyTrimmer use Assembly Assembly of Shoulder Harness Shoulder Harness AdjustmentAttaching the Handlebar Attaching Shoulder Harness ClampAssembly Information Trimmer Head Configuring Your UnitAssembly Information Weed Blade Attaching the Plastic Shield and Trimmer HeadAttaching the Metal Shield Installation of the Metal BladeHOW to Start Your Unit HOW to Stop Your UnitOperation Fueling EngineStarting a Flooded Engine Starting a Warm EngineOperating Position Operating Instructions for USE with Trimmer HeadOperating Instructions for USE with Weed Blade Cutting MethodsCutting Work area Cm above groundInspect and Clean Unit and Labels MaintenanceCheck for Loose Fasteners and Parts Check for Damaged or Worn PartsClean AIR Filter Service and AdjustmentsReplace Spark Plug Replacing the LineStorage Troubleshooting Table Cause Remedy EC Declaration of Conformity Only applies to Europe Declaration of ConformityWithout cutting attachment or shield, empty tank, kg Technical Data SheetIdling, m/s Racing, m/s