4-13EWhen fitting the plug, always clean thegasket surface and use a new gasket.Wipe off any dirt from the threads andscrew in the spark plug to the correcttorque.NOTE:If a torque-wrench is not available whenyou are fitting a spark plug, a good esti-mate of the correct torque is 1/4 to 1/2 aturn past finger-tight. Have the spark plugadjusted to the correct torque as soon aspossible with a torque-wrench.1 Spark plug gap2 Spark plug I.D. mark (NGK)Spark plug torque:Refer to “SPECIFICATIONS”, page 4-1Initial of spark plug Plug wrench sizeI.D. markB 21 mm (13/16 in.)C 16 mm (5/8 in.)D 18.3 mm (23/32 in.)903022qw
