McCulloch Elite 3900 Pro Spare Parts List
![McCulloch Elite 3900 Pro manual cover](/images/lotvDqsfrHdmfbThurwYFFPe/thumbs/thumb175x175.webp)
To start the trimmer, ensure it's on a flat surface, switch the choke to the start position, pump the primer bulb several times, pull the starter cord until the engine starts, and then switch the choke to the run position.
Ensure you are using the correct line diameter as specified in the user manual. Avoid hitting hard surfaces, and check the trimmer head for any damage or wear that could be cutting the line prematurely.
Clean the air filter after every 10 hours of use or more frequently in dusty conditions. Remove it, wash with soapy water, rinse, let it dry, and apply a small amount of oil before reinserting.
Excessive vibration can be caused by a bent shaft, damaged trimmer head, or loose parts. Inspect these components and tighten or replace them as necessary.
Use a 50:1 ratio of unleaded gasoline to 2-stroke engine oil. Mix thoroughly before filling the tank to ensure proper lubrication.
Ensure the cooling fins and air intake areas are clear of debris. Avoid running the trimmer at maximum throttle for extended periods and ensure proper fuel mixture.
After each use, clean debris from the trimmer head and shaft, inspect for any damage, and check the fuel and oil levels. Store the trimmer in a dry, cool place.
To replace the line, remove the trimmer head cover, take out any remaining line, and thread new line through the holes. Wind it evenly and replace the cover securely.
Check the fuel level and mixture, inspect the spark plug for wear or damage, ensure the choke is set correctly, and verify that the air filter is clean.
Yes, the trimmer can be used for edging by tilting it so that the line is vertical to the ground. Ensure you have a steady grip and proceed slowly for best results.