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Pressure washer spark plug size.
Improved anti fouling and corrosion resistance.
So i researched the owners manual for a honda gcv190 engine and found this conflict.
Ngk bpr6es pressure washer applications ngk bpr5es all other applications.
The lawn mower owners manual stated to use the ngk bpr6es plug.
Use in honda power equipment requiring plugs bpr6es for optimal performance.
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The original plug from the lawnmower was the hotter bpr5es plug though which is a bit puzzling to me.
0 028 0 031 inches for the most accurate results enter your serial number.
Flathead engine spark plugs gaps also known as l head or side valve engines these engines are commonly used for walk behind lawn mowers and pressure washers.