PERIODIC MAINTENANCE AND MINOR REPAIR
6-5
6
EAU18751
Removing and installing the
panel
The panel shown needs to be removed
to perform some of the maintenance
jobs described in this chapter. Refer to
this section each time the panel needs
to be removed and installed.
EAU33020
Panel A
To remove the panel
1. Remove the seat. (See page
2. Remove the bolt, and then pull the
panel off as shown.
To install the panel
1. Place the panel in the original posi-
tion, and then install the bolt.
2. Install the seat.
EAU19651
Checking the spark plugs
The spark plugs are important engine
components, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode,
they should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plugs can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter electrode of each spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally),
and all spark plugs installed in the en-
gine should have the same color. If any
spark plug shows a distinctly different
color, the engine could be defective. Do
not attempt to diagnose such problems
yourself. Instead, have a Yamaha deal-
er check the vehicle.
If a spark plug shows signs of electrode
erosion and excessive carbon or other
deposits, it should be replaced.
1. Panel A
1. Panel A
2. Bolt
Specified spark plug:
NGK/CR9EK
U1B3E1E0.book Page 5 Thursday, July 8, 2004 11:49 AM
