
9-19
9
To check the spark plug
1. Check that the porcelain insulator around the
center electrode of the spark plug is a medi-
um-to-light tan (the ideal color when the vehi-
cle is ridden normally).
TIP
If the spark plug shows a distinctly different color,
the engine could be operating improperly. Do not
attempt to diagnose such problems yourself. In-
stead, have a Yamaha dealer check the vehicle.
2. Check the spark plug for electrode erosion
and excessive carbon or other deposits, and
replace it if necessary.
3. Measure the spark plug gap with a wire thick-
ness gauge and, if necessary, adjust the gap
to specification.
To install the spark plug
1. Clean the surface of the spark plug gasket
and its mating surface, and then wipe off any
grime from the spark plug threads.
2. Install the spark plug with the spark plug
wrench, and then tighten it to the specified
torque.
Specified spark plug:
NGK/CPR7EA-9
1. Spark plug gap
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
UBFE10E0.book Page 19 Friday, April 10, 2020 10:10 AM
Содержание GRIZZLY 2021
Страница 16: ...2 6 2 BAS F8459 00 13 YFM70GPZM 14 YFM70GPZM UBFE10E0 book Page 6 Friday April 10 2020 10 10 AM ...
Страница 71: ...8 1 8 EBU21133 RIDING YOUR ATV UBFE10E0 book Page 1 Friday April 10 2020 10 10 AM ...
Страница 164: ...10 3 10 8 Remove the battery and fully charge it See page 9 52 UBFE10E0 book Page 3 Friday April 10 2020 10 10 AM ...
Страница 180: ...UBFE10E0 book Page 4 Friday April 10 2020 10 10 AM ...