PERIODIC MAINTENANCE AND MINOR REPAIR6-116Before installing a spark plug, the sparkplug gap should be measured with awire thickness gauge and, if necessary,adjusted to specification.Clean the surface of the spark pluggasket and its mating surface, and thenwipe off any grime from the spark plugthreads.NOTE:_If a torque wrench is not available wheninstalling a spark plug, a good estimateof the correct torque is 1/4–1/2 turnpast finger tight. However, the sparkplug should be tightened to the speci-fied torque as soon as possible._Specified spark plug:CR8E (NGK) orU24ESR-N (DENSO)a. Spark plug gapSpark plug gap:0.7–0.8 mm (0.027–0.031 in)Tightening torque:Spark plug:12.5 Nm (1.25 m·kgf, 9.0 ft·lbf)
