To Install The Spark Plug - Yamaha GRIZZLY 350 Owner's Manual

2. Check the spark plug for electrode erosion
and excessive carbon or other deposits, and
replace it if necessary.
Specified spark plug:
NGK/DR8EA

To install the spark plug

1. Measure the spark plug gap with a wire thick-
ness gauge and, if necessary, adjust the gap
to specification.
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
8
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:
17.5 Nm (1.75 m·kgf, 12.7 ft·lbf)
8-10