torque YAMAHA VX 2005 Owners Manual

4-16
E
Measure the spark plug gap a with a
wire thickness gauge. Replace the spark
plug or adjust the gap to specification if nec-
essary.
To install a spark plug:
1. Clean the gasket surface.
2. Wipe any dirt from the threads of the
spark plug.
3. Install the spark plug, and then tighten it
to specification.
4. Install the spark plug cap.
NOTE:@
Wipe off any water on the spark plug or
inside the spark plug cap before installing
the cap. Push the spark plug cap down
until it is securely installed.

If a torque wrench is not available when
you are installing a new spark plug, a
good estimate of the correct torque is 1/4
turn to 1/2 turn past finger tight with the
spark plug wrench included in the tool kit.
Have the spark plug adjusted to the cor-
rect torque with a torque wrench as soon
as possible.
@
WARNING@ Be careful not to damage the insulator
when removing or installing a spark plug.
A damaged insulator could allow sparks
to escape, which could lead to an explo-
sion or fire.
@
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Spark plug tightening torque:
12.5 N·m (1.25 kgf·m, 9 ft·lb)
UF1K70.book Page 16 Friday, November 19, 2004 2:42 PM