McCulloch B28 B Operator's Manual
![McCulloch B28 B manual cover](/images/zCwvduQFohqxVtEXgoXOanrk/thumbs/thumb175x175.webp)
To start the McCulloch B28 B Brushcutter, make sure the switch is in the "ON" position, press the primer bulb several times until fuel is visible, set the choke to the closed position, pull the starter handle until the engine fires, then set the choke to open and pull again until the engine starts.
Use a mixture of unleaded gasoline and high-quality 2-stroke oil at a ratio of 40:1 for optimal performance.
Check the fuel level and ensure it's fresh, inspect the spark plug for wear or damage, ensure the air filter is clean, and verify that all switches and controls are in the correct position.
It's recommended to clean the air filter after every 5 hours of operation or more frequently in dusty conditions.
Regular maintenance includes cleaning the air filter, checking and replacing the spark plug if necessary, inspecting the fuel system for leaks, and checking the cutting attachment for wear.
To replace the trimmer line, first turn off the engine and disconnect the spark plug wire. Remove the trimmer head cover and spool, then wind new line onto the spool as per the directional arrows, ensuring it is evenly distributed. Reassemble the trimmer head and secure it.
Excessive vibration can be caused by an unbalanced cutting attachment or loose parts. Inspect the cutting attachment for damage and ensure it's properly secured. Check for loose screws or bolts and tighten them as necessary.
Adjusting the carburetor should be done by a professional. However, if necessary, locate the adjustment screws on the carburetor and make small adjustments to the idle and fuel mixture screws while the engine is running to ensure smooth operation.
Ensure that the muffler is properly installed and in good condition. Regular maintenance such as cleaning the spark arrestor screen can also help reduce noise levels.
Always wear appropriate protective gear such as eye protection, gloves, long pants, and sturdy footwear. Be aware of your surroundings and keep bystanders at a safe distance. Follow the manufacturer's instructions and warnings.