Ryobi RBV254O - Detailed Maintenance Procedures; Replacing the Spark Plug

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MAINTENANCE
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REPLACING THE SPARK PLUG
1. To stop the engine, toggle the on/off
switch to the “STOP” position.
2. Disconnect the spark plug boot from the
spark plug.
3. Using a socket wrench, loosen the old
spark plug by turning it counterclockwise.
Remove the old spark plug and dispose
properly.
4. Install the new spark plug.
If using a socket wrench, tighten the
spark plug by turning it clockwise with a
torque of 216 in.lb. (24.40 Nm) minimum,
264 in.lb. (29.82 Nm) maximum.
To hand-tighten the spark plug, make 4
turns plus another 1/5 turn.
Do not over-tighten. Connect the spark
plug boot to the spark plug.