Yamaha BANSHEE YFZ350 Owner's Manual page 84

stead, have a Yamaha dealer check the ATV.
3. Check each spark plug for electrode erosion
1
and excessive carbon or other deposits, and
replace it if necessary.
2
Specified spark plug:
3
NGK/BR8ES
4
To install a spark plug
5 1. Measure the spark plug gap with a wire thick-
ness gauge and, if necessary, adjust the gap
6
to specification.
Spark plug gap:
7
0.7–0.8 mm (0.028–0.031 in)
8
9
10
11
1. Spark plug gap
2. Clean the surface of the spark plug gasket
and its mating surface, and then wipe off any
grime from the spark plug threads.
3. Install the spark plug with the spark plug
wrench, and then tighten it to the specified
torque.
Tightening torque:
Spark plug:
20 Nm (2.0 m·kgf, 14 ft·lbf)
NOTE:
If a torque wrench is not available when installing
8-9