Consider removing parts like the tines to scrub and spray completely (see your tools guide). Internal combustion cannot start and not use a spark, so eradicating the spark plug ensures you aren’t getting any surprises whenever you get to work. A tough spray of water or a pressurized sprayer will remove caked-on dirt from equipment and get into tight spaces like the tines of a tiller. Please read the label, use it as directed, and wear personal protective gear read more