How to Change a Homelite Chain Saw's Spark Plug

One of the simplest do-it-yourself jobs on a Homelite chain saw is replacing the spark plug. You can complete the project in about 10 minutes with some basic tools. The spark plug is a necessary part of the Homelite chain saw, which will not start without it. Just like the engine in your automobile, the spark plug is responsible for completing combustion in the gasoline engine by producing a spark at the same time the piston is on the upstroke.

Phillips screwdriver
Socket set

Instructions

- 1
  Remove the motor housing using the Phillips screwdriver to detach the screws securing it.
- 2
  Remove the spark plug wire from the plug by grasping the boot and pulling it off. Do not pull on the wire itself or you will damage it.
- 3
  Remove the spark plug from the motor using a spark plug socket and ratchet, turning it counterclockwise.
- 4
  Place the new spark plug in the opening and tighten it by hand, turning it clockwise. Finish tightening the plug with the ratchet and spark plug socket until it is snug. Do not overtighten the plug or you will damage the threads.
- 5
  Reattach the spark plug wire. Reposition the motor housing and secure it with the screws.

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