Periodic maintenance and adjustment
6-3
6
EAU71033
Periodic maintenance chartsTIPItems marked with an asterisk should be performed by your Yamaha dealer because these items require special tools,
data, and technical skills.
From 50000 km (30000 mi), repeat the maintenance intervals starting from 10000 km (6000 mi).
The annual checks must be performed every year, except if a distance-based maintenance is performed in-
stead.
EAU71051
Periodic maintenance chart for the emission control systemNO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING
ANNUAL
CHECK 1000 km
(600 mi)10000 km
(6000 mi)20000 km
(12000 mi)30000 km
(18000 mi)40000 km
(24000 mi)
1*Fuel line• Check fuel hoses for cracks or
damage.
• Replace if necessary.√√√√√
2*Spark plugs• Check condition.
• Adjust gap and clean.√√
• Replace.√√
3*Valve clearance• Check and adjust. Every 40000 km (24000 mi)
4*Fuel injection• Check engine idle speed.√√√√√√
• Check and adjust synchroniza-
tion.√√√√√
5*Exhaust system• Check for leakage.
• Tighten if necessary.
• Replace gaskets if necessary.√√√√√
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Periodic maintenance and adjustment
6-9
6
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Removing and installing cowl-
ingsThe cowlings shown need to be re-
moved to perform some of the mainte-
nance jobs described in this chapter.
Refer to this section each time a cowl-
ing needs to be removed and installed.
EAU18792
Cowling A
To remove the cowlingRemove the screws, and then take the
cowling off.To install the cowling
Place the cowling in the original posi-
tion, and then install the screws.
EAU19653
Checking the spark plugsThe spark plugs are important engine
components, which should be
checked periodically, preferably by a
Yamaha dealer. Since heat and depos-
its will cause any spark plug to slowly
erode, they should be removed and
checked in accordance with the peri-
odic maintenance and lubrication
chart. In addition, the condition of the
spark plugs can reveal the condition of
the engine.
The porcelain insulator around the
center 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 engine should have the same
color. If any spark plug shows a dis-
tinctly different color, the engine could
be operating improperly. Do not at-
tempt to diagnose such problems
yourself. Instead, have a Yamaha deal-
er check the vehicle.
If a spark plug shows signs of elec-
trode erosion and excessive carbon or
other deposits, it should be replaced.
1. Cowling A
1
1. Cowling A
2. Screw
1
2
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