Toro 900 51216 Operator's Manual
![Toro 900 51216 Trimmer manual cover](/images/UnKhQGMckpHtETRhYvCRvmRN/thumbs/thumb175x175.webp)
To start the Toro 900 51216 Trimmer, ensure it is properly assembled and filled with the correct fuel mixture. Set the choke lever to the 'start' position, press the primer bulb a few times, and pull the starter rope until the engine starts. Once started, move the choke lever to the 'run' position.
The Toro 900 51216 Trimmer requires a 50:1 fuel-to-oil mixture. Use unleaded gasoline with a minimum octane rating of 89 and mix it with a high-quality 2-cycle engine oil.
To replace the cutting line, turn off the trimmer and disconnect the spark plug. Remove the trimmer head cover, take out the spool, and replace the old line with a new one by following the directional arrows on the spool. Reassemble the parts in reverse order.
If the trimmer line breaks frequently, check for worn or damaged line, ensure the line is not too short, and avoid contact with hard surfaces. Using the correct line diameter and type recommended by Toro can also help reduce breakage.
Regular maintenance such as cleaning the air filter, checking the spark plug, and using fresh fuel can improve performance. Additionally, ensure the cutting head is properly aligned and the line is the correct length.
Maintenance includes checking and cleaning the air filter, inspecting and replacing the spark plug annually, lubricating moving parts, and ensuring the fuel mixture is fresh. Regularly inspect the trimmer line and replace it as needed.
If the trimmer won't start, check the fuel mixture, ensure the spark plug is not fouled or damaged, and make sure the air filter is clean. Also, verify the choke and primer bulb are functioning correctly.
To store the trimmer, drain the fuel tank and run the engine until it stops to clear any remaining fuel. Clean the trimmer thoroughly, check for any necessary repairs, and store it in a dry, cool place away from direct sunlight.
Excessive vibration can be caused by an imbalanced or damaged trimmer head. Check for debris buildup or damage to the head and replace any worn parts. Ensure the cutting line is evenly distributed and not too long.
To extend the trimmer's life, perform regular maintenance, use the correct fuel mixture, avoid overloading the trimmer, and store it properly during the off-season. Promptly address any issues or unusual noises during operation.