Yamaha SR125 Owner's Manual page 37

a. Spark plug gap
Installation
1. Measure the electrode gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
Spark plug gap:
0.6 ~ 0.7 mm
2. Clean the gasket surface. Wipe off
any grime from the threads.
3. Install the spark plug and tighten it
to the specified torque.
PERIODIC MAINTENANCE AND MINOR REPAIR
Tightening torque:
Spark plug:
17.5 Nm (1.75 m·kg)
NOTE:
@
If a torque wrench is not available when
you are installing a spark plug, a good
estimate of the correct torque is 1/4 to
1/2 turn past finger tight. Have the
spark plug tightened to the specified
torque as soon as possible.
@
4. Install the spark plug cap.
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