Manuals / McCulloch / Lawn and Garden / Brush Cutter

McCulloch MAC 250 B Service and Adjustments, Clean AIR Filter, Replace Spark Plug

Models: MAC 250 B

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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

 

Spool

TabTab

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.

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