McCulloch REX900 Spare Parts List

To start the McCulloch REX900 Trimmer, first ensure the trimmer is on a flat surface. Set the choke to the 'cold start' position, prime the engine by pressing the primer bulb ten times, and then pull the starter rope firmly until the engine starts. Once running, set the choke to 'run'.
Use a fresh unleaded gasoline mixed with a good quality 2-stroke engine oil at a ratio of 40:1. Ensure the fuel is well mixed before filling the tank.
To replace the line, first turn off the trimmer and disconnect the spark plug. Remove the spool cover, take out any remaining line, and insert new line into the holes. Follow the winding direction indicated on the spool, then reattach the cover securely.
If the trimmer line keeps breaking, check for obstructions and clear any debris that may be causing line wear. Ensure you are using the correct line thickness and type specified for the REX900. Avoid hitting hard surfaces while trimming.
Regular maintenance should be performed after every 25 hours of use or at the start of each trimming season. This includes cleaning the air filter, checking the spark plug, and inspecting the fuel filter.
If the trimmer is not cutting efficiently, check the trimmer line for wear or damage. Also, ensure the line is correctly installed and the cutting head is clean. Sharpen the blade if your model includes one.
For offseason storage, clean the trimmer thoroughly, empty the fuel tank, and run the engine until it stops to clear the carburetor. Store the trimmer in a dry, cool place away from direct sunlight or moisture.
To clean the air filter, remove the cover and take out the filter. Wash it with warm soapy water, rinse thoroughly, and let it dry completely before reinstalling. Ensure the filter is placed correctly in its housing.
If the engine stalls or hesitates, check the air filter and clean it if dirty. Inspect the spark plug for wear or damage and replace if necessary. Also, verify that the fuel mixture is correct and the fuel is fresh.
Excessive vibration may be caused by an unbalanced or damaged cutting head. Inspect the cutting head for any damage or debris. Tighten any loose parts and replace worn components as needed.