McCulloch HBM25 Spare Parts List
![McCulloch HBM25 manual cover](/images/izkAUTOevLauXfvHfvyRwQLh/thumbs/thumb175x175.webp)
To start the McCulloch HBM25 Trimmer, ensure the trimmer is on a flat surface. Set the choke lever to the 'Start' position, press the primer bulb until it fills with fuel, pull the starter rope briskly until the engine starts, then move the choke to the 'Run' position.
Regularly check the air filter and clean or replace it every 25 hours of operation. Inspect the spark plug every 50 hours and replace if necessary. Check the cutting head and replace the trimmer line as needed.
If the trimmer won't start, check the fuel level and ensure it is fresh. Inspect the spark plug for wear or damage and replace if required. Make sure the choke is set correctly and the air filter is clean.
To replace the trimmer line, turn off the trimmer and disconnect the spark plug. Remove the spool from the cutting head, wind new line onto the spool in the indicated direction, then reattach the spool to the cutting head.
Use a mixture of unleaded gasoline and a high-quality 2-stroke engine oil at a 40:1 ratio. Do not use gasoline containing more than 10% ethanol.
Regular maintenance such as cleaning or replacing the air filter, using fresh fuel, and keeping the trimmer line at the correct length can significantly improve performance.
Ensure you are using the correct diameter and type of line for your trimmer. Avoid hitting hard surfaces, and ensure the line is not too short. If the issue persists, inspect the trimmer head for damage.
Remove the air filter cover, take out the filter, and wash it in warm soapy water. Rinse thoroughly and allow it to dry completely before reinstalling. Replace the filter if it is damaged or excessively dirty.
Wear protective gear including goggles, gloves, and ear protection. Keep bystanders at a safe distance, and do not operate the trimmer in wet conditions or near flammable materials.
Inspect the trimmer line for even length and wear, replace if necessary. Check the trimmer head for damage or imbalance, and ensure the trimmer is operating at full throttle during use.