The RYOBI 4 Cycle Spark Plug will keep your 4 cycle engine running smoothly. Use this replacement spark plug with any of the RYBOI 4 Cycle gas powered u. Skip to content.. 4 CYCLE REPLACEMENT SPARK PLUG AC00164A. $7.97. Add to Cart. Product Details. Includes. Support. RYOBI Resources.. Use this replacement spark plug with any of the RYOBI 2 Cycle gas powered u. Skip to content. New Arrivals! Discover the Latest RYOBI Tools & Innovations.. 4 CYCLE REPLACEMENT SPARK PLUG. AC00164A. $7.97. Add to Cart. 2 Cycle Full Crank Attachment Capable Straight Shaft String Trimmer. RY253SSVNM. $199.00. Add to Cart.
Symptoms of a bad spark plug include difficulty starting, misfiring or the inability to start the engine at all. This article provides step-by-step instructions for removing and installing the spark plug on a Ryobi string trimmer. Let's get started. REMOVING THE SPARK PLUG 1. Remove the spark plug. Remove the spark plug boot from the spark plug.. Need help replacing the Spark Plug (Part 791-610311B) in your Ryobi Trimmer? Watch this how to video with simple, step-by-step instructions for a successful.