Arnold 490-250-Y014 Spark Plug Walk Behind Mower

Product Description

The ARNOLD 490-250-Y014 is a replacement spark plug designed for walk-behind lawn mowers. It provides the ignition spark necessary to fire the engine's air-fuel mixture, and it installs in the cylinder head of small gasoline engines commonly found in residential walk-behind mower applications. The plug features a 13/16 inch hex size, making it compatible with standard spark plug sockets used across a wide range of small-engine service work. At 0.187 pounds, it is a lightweight, direct-fit replacement that licensed small-engine technicians and knowledgeable DIYers can swap in as part of routine tune-up service.

This spark plug is intended for walk-behind lawn mowers used in residential settings. It is a named fit for Troy-Bilt, MTD, Yard-Man, Yard Machines, Huskee, and Bolens walk-behind mower models. It is well suited for seasonal maintenance intervals or as a replacement when the existing plug shows fouling, worn electrodes, or a cracked insulator. Small-engine technicians typically service this part during spring tune-ups or when diagnosing a hard-start or rough-running condition.

Key Features

• 13/16 inch hex size fits standard small-engine spark plug sockets
• Direct-fit replacement for Troy-Bilt, MTD, and related brand walk-behind mowers
• Lightweight at 0.187 pounds for easy handling during service
• Sold individually, making it practical for single-engine tune-up jobs
• Suitable for routine seasonal maintenance or as a diagnostic replacement part

Compatibility

Designed for Troy-Bilt, MTD, Yard-Man, Yard Machines, Huskee, and Bolens walk-behind mowers as stated by the manufacturer.

Installation Notes

Spark plug replacement on walk-behind mowers is typically performed by small-engine technicians or qualified DIYers. Before removing the plug, disconnect the spark plug wire to prevent accidental engine startup. Use a spark plug socket and torque wrench sized for 13/16 inch to seat the plug properly — consult the engine manufacturer's service manual for the correct torque specification, as it is not provided here. Dispose of the used plug in accordance with local regulations.