Champion 861-1 Lawn Garden Spark Plug Copper Core

Product Description

The CHAMPION 861-1 is a conventional spark plug designed for lawn and garden equipment engines. It features nickel alloy electrodes and a copper core center electrode, which work together to improve electrical conductivity and maintain stable heat range across varying engine loads. This plug is installed by small-engine technicians, outdoor power equipment service shops, and experienced DIYers performing seasonal maintenance or tune-ups on walk-behind mowers, riding mowers, and similar 4-cycle yard equipment. The copper core construction helps the electrode shed heat efficiently, reducing the risk of pre-ignition and fouling during normal operation.

This spark plug is suited for residential and light commercial lawn and garden applications. It is a direct-fit conventional plug intended for small gasoline engines commonly found in walk-behind and riding mowers, string trimmers, and other outdoor power equipment. It sells in single-plug quantities, making it a practical choice for per-unit service jobs and scheduled maintenance calls.

Key Features

• Nickel alloy electrodes for reliable ignition and wear resistance
• Copper core center electrode promotes increased conductivity and heat dissipation
• Conventional spark plug design compatible with standard small-engine ignition systems
• Sold individually for per-unit service and tune-up applications
• Lightweight at approximately 0.12 pounds per unit

Compatibility

Designed as an OEM-style replacement spark plug for small gasoline lawn and garden engines. No specific model compatibility data was provided in the product input.

Installation Notes

Spark plug replacement on small-engine equipment is typically performed by small-engine technicians or qualified service personnel. Always disconnect the spark plug wire and allow the engine to cool completely before removing the existing plug. Use a spark plug socket and torque wrench to seat the new plug; avoid overtightening, which can damage the cylinder head threads. Verify the electrode gap meets the engine manufacturer specification before installation.