Ryobi 89120406036 Knob Guide Lock Lawn Mower Part

Product Description

The RYOBI 89120406036 is an OEM knob guide lock designed as a direct factory replacement for RYOBI and RIDGID lawn mower equipment. This small but essential hardware component secures the guide assembly in position, maintaining accurate cutting height or deck adjustment settings during operation. Technicians and service professionals install this part when the original knob guide lock shows wear, stripping, or breakage that prevents the guide from holding its set position. As a genuine OEM part, it is manufactured to the original design specifications, ensuring proper fit and function without modification.

This knob guide lock is used in residential lawn mower applications under the RYOBI and RIDGID equipment lines. It is a common wear item on walk-behind mowers, where repeated adjustment cycles can cause the locking mechanism to degrade over time. Service technicians replacing this part will find it a straightforward component swap that restores the adjustment function of the guide assembly. No specialty tooling is typically required for this repair.

Key Features

• Genuine OEM part manufactured to original factory specifications
• Direct replacement for worn or damaged knob guide lock assemblies
• Compatible with RYOBI and RIDGID lawn mower platforms
• Restores proper guide locking function without modification
• Designed for straightforward field or shop replacement

Compatibility

Designed as an OEM replacement knob guide lock for RYOBI and RIDGID lawn mower equipment. Confirm fitment against the original equipment model and parts diagram before ordering, as this component may apply to multiple mower configurations within these product lines.

Installation Notes

Disconnect the spark plug wire before beginning any work on lawn mower equipment to prevent accidental engine start. This part is typically installed by a lawn equipment service technician or a knowledgeable operator using basic hand tools. Inspect the surrounding guide assembly for additional wear before completing reassembly. Dispose of the old part properly and verify the lock seats fully before returning the unit to service.

Technical Specifications

• Part Type: Knob Guide Lock
• OEM Status: Genuine OEM Replacement Part

Standard Information

• Brand: RYOBI
• Manufacturer Part Number: 89120406036