McCulloch Tri Mac 241 Spare Parts List
![McCulloch Tri Mac 241 manual cover](/images/ceetofeumMCNMMpjSTypNdWK/thumbs/thumb175x175.webp)
To start the McCulloch Tri Mac 241 Trimmer, first ensure it is on a flat surface. Set the choke to the cold start position, press the primer bulb several times until fuel is visible, and pull the starter rope briskly until the engine fires. Move the choke to the run position once started.
Use a mixture of unleaded gasoline and 2-stroke oil at a ratio of 40:1. Ensure that the gasoline has an octane rating of 89 or higher and the oil is specifically designed for air-cooled 2-stroke engines.
To replace the trimmer line, first turn off the trimmer and disconnect the spark plug wire. Remove the spool from the trimmer head, unwind any remaining line, and follow the directional arrows on the spool to wind new line evenly. Reattach the spool securely to the trimmer head.
If the trimmer won't start, check the fuel level and quality, ensure the spark plug is clean and properly gapped, and verify that the air filter is clean. Also, inspect the carburetor for clogs and make sure the primer bulb is functioning.
Clean the air filter after every 10 hours of use or more frequently in dusty conditions. Remove the filter, wash it with warm soapy water, rinse, and allow it to dry completely before reinstalling.
Before storing the trimmer, run the engine until it stops to empty the fuel system. Clean the trimmer thoroughly and inspect it for any damage. Store it in a dry, cool place away from direct sunlight. Consider using a fuel stabilizer if storing with fuel.
To adjust the carburetor, locate the adjustment screws on the carburetor body. Start the engine and allow it to warm up. Adjust the screws slowly to achieve a smooth idle and optimal performance, following the manufacturer's specifications.
Excessive vibration can be caused by a damaged trimmer head, unbalanced line, or loose parts. Check the trimmer head for damage, ensure the line is properly installed, and tighten any loose screws or bolts on the trimmer.
To replace the spark plug, disconnect the spark plug wire and use a spark plug wrench to remove the old plug. Check the gap on the new plug with a feeler gauge, adjust if necessary, and install the new plug. Reattach the spark plug wire securely.
Frequent line breakage can be caused by using the wrong type or thickness of line, excessive contact with hard surfaces, or improper winding on the spool. Use the recommended line type, avoid hitting hard objects, and ensure proper installation.