How to Replace a Spark Plug Adapter

One way to prolong the life of your tractor or improve the efficiency of your vehicle is to replace the spark plug adapter. Engines that require large spark plugs can be reformed to use new, improved plugs. It is hard to find quality plugs for older engines. The spark plugs of today can be guaranteed up to 100,000 miles. Your tractor might live forever. Engines using a spark plug adapter can use 14 mm to 18 mm plugs. Making sure your adapter and plugs are done right will have your engine running like a charm.

Tools and Materials Needed:

  • Spark plug adapter
  • Socket wrench
  • Spark plug socket
  • Extension
  • Lube thread
  • Protective gloves
  • Protective eyewear

Step 1 – Being Safe

Wearing your protective eyewear and gloves will cut down the chance of injury. Mechanic’s gloves provide the best protection for working on vehicles. Shut off the electricity by disconnecting the negative battery cable.

Step 2 – Remove the Old Adapter

Disconnect the spark plug wire from the spark plug. Using the spark plug socket on the socket wrench, remove the plug. Attach the appropriately sized socket to the socket extension and remove the old adapter.

Step 3 – Install New Adapter

Apply a small amount of thread lube to the new adapter. This will provide strength. Place your new adapter into the cylinder. If your extension and socket is a magnetized version, this will be easier. Tighten the spark plug adapter until tight. Replace the plugs, and your job is complete.