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and erode. If electrode erosion becomes ex-
cessive, or if carbon and other deposits are
excessive, you should replace the spark plug
with the specified plug.
Measure the spark plug gap with a wire thick-
ness gauge and, if necessary, adjust the gap
to specification.
Installation
1. Clean the surface of the spark plug gas-
ket and its mating surface, and then wipe
off any grime from the spark plug
threads.
2. Install the spark plug and tighten it to the
specified torque. If a torque wrench is not
available when you are installing the
spark plug, a good estimate of the cor-
rect torque is one-quarter to one-half turn
past finger tight. Have the spark plug
tightened to the specified torque as soon
as possible.
3. Install the spark plug cap.
Specified spark plug:
NGK/CPR7EA-9
1. Spark plug gap
1
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Tightening torque:
Spark plug:
11 Nm (1.1 m·kgf, 8.0 ft·lbf)
U2MB70E0.book Page 31 Thursday, January 22, 2015 8:54 AM