BLADE REPLACEMENT

Refer to the ASSEMBLY section for blade re- placement instructions and illustrations.

CARBURETOR ADJUSTMENT

WARNING: Keep others away when making idle speed adjustments. The trimmer head will be spinning during most of this pro- cedure. Wear your protective equipment and observe all safety precautions. After making adjustments, the trimmer head 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 re- leased.

SThe trimmer head moves/spins at idle speed. 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 adjust- ments. Keep all parts of your body away from the cutting attachment and muffler.

Idle Speed Adjustment

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

S Turn idle speed screw clockwise to in- crease engine speed if engine stalls or dies.

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

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

Idle Speed Screw

Air Filter Cover

If you require further assistance or are unsure about performing this procedure, contact an authorised service dealer.

STORAGE

WARNING: Perform the following steps after each use:

SAllow engine to cool before storing or trans-

porting.

SStore unit and fuel in a well ventilated area where fuel vapors cannot reach sparks or open flames from water heaters, electric motors or switches, furnaces, etc.

SEmpty fuel tank before storing or transport-

ing the unit.

SStore unit and fuel well out of the reach of

children.

SStore unit with all guards in place. Position unit so that any sharp object cannot acci- dentally cause injury.

SEASONAL STORAGE

Prepare unit for storage at end of season or if it will not be used for 30 days or more.

If your unit is to be stored for a period of time:

SClean the entire unit before lengthy storage. S Store in a clean dry area.

S Lightly oil external metal surfaces.

ENGINE

SRemove spark plug and pour 1 teaspoon of 40:1, 2-cycle engine oil (air cooled) through

the spark plug opening. Slowly pull the starter rope 8 to 10 times to distribute oil.

SReplace spark plug with new one of recom-

mended type and heat range.

SClean air filter.

S Check entire unit for loose screws, nuts, and bolts. Replace any damaged, broken, or worn parts.

SAt the beginning of the next season, use only fresh fuel having the proper petrol to oil ratio.

OTHER

S Do not store petrol from one season to another.

SReplace your petrol can if it starts to rust.

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McCulloch MAC 250 B instruction manual Storage
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MAC 250 B specifications

The McCulloch MAC 250 B chainsaw is a powerful and reliable tool that is well-suited for both professional and home users. It is designed to tackle a variety of tasks, from cutting firewood to pruning trees, making it a versatile choice for any outdoor enthusiast.

One of the standout features of the MAC 250 B is its robust engine. The chainsaw is equipped with a 25cc, air-cooled, two-stroke engine that provides a high power-to-weight ratio. This means that despite its relatively lightweight design, the MAC 250 B delivers impressive performance. The engine is engineered for efficient fuel consumption, allowing users to complete their tasks without the need for frequent refueling.

The chainsaw also features a 12-inch guide bar, which strikes a perfect balance between cutting capability and maneuverability. This makes it particularly effective for pruning and small to medium-sized tree maintenance. The chainsaw's chain is designed for easy sharpening and replacement, ensuring that users can keep their tool in optimal condition for the best cutting performance.

Safety is a paramount design consideration for the MAC 250 B. It is equipped with several safety features, including a chain brake that automatically stops the chain in the event of a kickback, protecting the user from potential injuries. Additionally, the chainsaw has an easy-to-access on/off switch, allowing for quick shut-off when needed.

Another notable aspect of the McCulloch MAC 250 B is its user-friendly design. The chainsaw has a comfortable handle that provides a solid grip, reducing fatigue during extended use. The lightweight construction, coupled with the well-balanced design, allows users to maneuver the chainsaw with ease, even in tight spaces.

In terms of maintenance, the MAC 250 B is designed for easy access to spark plugs and air filters, which simplifies routine upkeep. This ensures that the chainsaw remains in peak working condition with minimal effort, enhancing its longevity.

Overall, the McCulloch MAC 250 B is an excellent choice for those seeking a reliable and efficient chainsaw. With its combination of power, safety features, and ergonomic design, it is equipped to handle a range of outdoor tasks, making it a valuable tool for both novices and experienced users alike.
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