McCulloch TrimMac ST Plus Operator's Manual
![McCulloch TrimMac ST Plus manual cover](/images/qkmoKLxCAqvaHglZTgmkTqtH/thumbs/thumb175x175.webp)
To start your McCulloch TrimMac ST Plus Trimmer, first ensure that the trimmer is on a flat surface. Set the choke to the "closed" position, then firmly grip the handle and pull the starter rope until the engine starts. Once started, move the choke to the "open" position.
If the trimmer line won't feed, first ensure the spool is properly loaded. Check for any tangles or jams. Ensure the line is not too short; replace it if necessary. Also, check that the bump feed mechanism is not stuck.
The air filter should be cleaned after every 5 hours of operation. Remove the filter, clean it with soapy water, rinse, and allow it to dry completely before reinstalling. Regular cleaning helps maintain optimal engine performance.
A trimmer may stall if the fuel is old or if the air filter is clogged. Ensure that the fuel is fresh and replace it if necessary. Clean or replace the air filter as needed. Also, check for any blockages in the fuel line.
Use a fresh, unleaded gasoline with a minimum octane rating of 87, mixed with a high-quality 2-stroke engine oil at a ratio of 40:1. This ensures optimal performance and longevity of the trimmer.
To replace the trimmer line spool, first turn off the trimmer and disconnect the spark plug wire. Remove the spool cover by pressing the release tabs. Replace the old spool with a new one, ensuring the line is properly threaded, and then reattach the cover.
Regular maintenance includes cleaning the air filter, checking and replacing the spark plug annually, inspecting the fuel lines for leaks, cleaning the exterior, and ensuring the trimmer line is in good condition.
To prevent overheating, ensure proper ventilation by keeping the engine and cooling fins clean. Avoid running the trimmer at full throttle for extended periods, and ensure the air filter is clean.
Excessive vibration can be caused by a damaged or unbalanced trimmer head, loose parts, or worn bearings. Inspect the trimmer head for damage, tighten any loose parts, and replace worn components as needed.
Before storing your trimmer, drain the fuel tank and run the engine until it stops. Clean the trimmer thoroughly, inspect and replace any worn parts, and store it in a dry, cool place. Consider removing the spark plug and adding a few drops of oil to the cylinder to prevent corrosion.