DescriptionThis video provides step-by-step repair instructions for replacing the spark plug on a Briggs and Stratton small engine. The most common reason for replacing the spark plug is when the engine won’t start.
All of the information for this spark plug replacement video is applicable to the following brands:
Briggs & Stratton, MTD
Tools needed: spark plug wrench
Step-By-Step Instructions1
In this video, we will show one or more of these icons to alert you when to use caution before you replace the spark plug in your engine.
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First, make sure the engine has cooled.
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Now, remove the wire and boot from the spark plug.
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Use a 5/8 inch deep well socket or a spark plug wrench to help loosen the old spark plug.
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Before you install the new spark plug, confirm that the spark gap is at manufacturer's specifications.
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This engine model requires a 20,000th of an inch gap.
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Now, thread the new spark plug into the cylinder head.
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Be careful not to strip the threads by over-tightening.
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Attach the wire and boot to the spark plug, and your engine should be ready for use.