Ryobi RY25PHEMC Operator's Manual
![Ryobi RY25PHEMC Trimmer manual cover](/images/KUOqjkNyXsmzkADSTwHusTZy/thumbs/thumb175x175.webp)
To start the Ryobi RY25PHEMC trimmer, ensure the choke lever is in the start position, press the primer bulb 10 times, set the throttle to fast, and pull the starter grip until the engine starts.
Use unleaded gasoline with a minimum octane rating of 87 and mix it with high-quality 2-cycle engine oil at a 50:1 ratio.
To replace the trimmer line, remove the spool from the trimmer head, cut a new line of appropriate length, and wind it tightly onto the spool following the directional arrows.
If the trimmer won't start, check the fuel mixture, ensure the spark plug is clean, inspect the air filter, and verify the choke is set correctly.
Clean the air filter every 5 hours of operation or more frequently if used in dusty conditions. Wash it with soap and water, then allow it to dry before reinstalling.
To prevent trimmer line breakage, avoid hitting hard surfaces, ensure the line is of the correct diameter, and keep the line at the recommended length.
Regular maintenance includes checking and replacing the spark plug annually, cleaning or replacing the air filter, inspecting the fuel system, and checking the trimmer head for wear.
For winter storage, drain the fuel tank, run the engine until it stops to clear the carburetor, clean the trimmer, and store it in a dry location.
Excessive vibration can be caused by a bent shaft, loose parts, or unbalanced trimmer line. Inspect and tighten all parts, and ensure the trimmer line is installed correctly.
To adjust the carburetor, locate the adjustment screws on the carburetor and turn them to fine-tune the idle speed and fuel mixture, following the guidelines in the user manual.