How to Change a Lawn Mower Spark Plug
Step 2: Disconnect Spark Plug Wire
Pull off the spark plug wire. You may have to wiggle it a little, but it should come right off. If it’s stuck and you have to use pliers, be very gentle and try not to damage it. Look inside the wire hood and inspect the contacts – if the spark plug wire is corroded and rusty, you may need to replace it, too.
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