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The RYOBI 80035003031 is an OEM deck riving knife designed as a direct replacement for Ryobi and Ridgid walk-behind lawn mowers. The riving knife is a blade-adjacent safety component mounted to the mower deck that helps prevent material kickback and guides clippings toward the discharge chute or collection system. This part is sourced from the original equipment manufacturer, meaning it is built to the same dimensional and material tolerances as the factory-installed component. Service technicians and experienced DIY operators install this part when the original riving knife is bent, cracked, or missing.
This riving knife is intended for use on residential walk-behind lawn mowers built under the Ryobi and Ridgid brands. It is most commonly replaced during routine deck service, after a blade strike event that bends the knife out of specification, or when restoring a used mower to safe operating condition. Proper knife alignment relative to the blade is critical for safe operation of the cutting deck.
This part is compatible with Ryobi and Ridgid brand walk-behind lawn mowers that use the original 80035003031 deck riving knife.
Installation should be performed by a qualified small engine technician or a knowledgeable operator familiar with rotary mower deck service. Before beginning any deck or blade work, disconnect the spark plug wire to prevent accidental engine start. Ensure the blade is fully stopped and the mower is on a stable, level surface before accessing the underside of the deck. Confirm proper knife alignment and secure fastener torque before returning the mower to service.
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