To Install Spark Plug - Yamaha Thundercat YZF600R Owner's Manual

PERIODIC MAINTENANCE AND MINOR REPAIR
3. Check each spark plug for elec-
trode erosion and excessive car-
bon or other deposits, and replace
it if necessary.
Specified spark plug:
CR9E (NGK) or
U27ESR-N (DENSO)
6
a. Spark plug gap
To install a spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
Spark plug gap:
0.7–0.8 mm
2. Clean the surface of the spark
plug gasket and its mating sur-
face, and then wipe off any grime
from the spark plug threads.
3. Install the spark plug with the
spark plug wrench, and then tight-
en it to the specified torque.
6-9
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf)
NOTE:
_
If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4–1/2 turn
past finger tight. However, the spark
plug should be tightened to the speci-
fied torque as soon as possible.
_
4. Install the spark plug cap.