DescriptionThis video provides step-by-step instructions for replacing the spark plug on Homelite chainsaws. The most common reasons for replacing the spark plug are when the chainsaw won’t start or runs poorly and testing the spark plug proves it is at fault.
All of the information in this spark plug replacement video is applicable to the following brands: Homelite, Ryobi, Toro
Tools used: T25 Torx screwdriver, flat-head screwdriver, spark plug wrench, gapping tool
Step-By-Step Instructions1
Before you replace the spark plug on your chainsaw first make sure the engine has cooled and that the on-off switch is in the “off” position.
2
Now use a t-25 torx bit screwdriver to unthread the screws securing the top cover.
3
Pull the cover off – this may require some effort.
4
Remove the wire and boot from the spark plug.
5
Use a socket or a spark plug wrench to help unthread the old spark plug.
6
Before you install the new spark plug confirm that the spark gap is at manufacturer’s specifications.
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This chainsaw model requires a 25 thousandths of an inch gap.
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Now thread the plug into the cylinder.
9
Be careful not to over tighten.
10
Attach the wire and boot to the new spark plug.
12
Thread and tighten the screws to secure.
13
Turn the on-off switch to the “on” position and your chainsaw should be ready for use.