2011 YAMAHA XT660Z Valves

vapor, or get some gasoline in your
eyes, see your doctor immediately.
If gasoline spills on your skin, wash
with soap and water. If gasoline
spills on your clothing, change your
clothes.
EAU49460
ECA11400
Use only unleaded gasoline. The
use of leaded gasoline will cause
severe damage to internal engine
parts, such as the valves and piston
rings, as well as to the exhaust sys-
tem.
Your Yamaha engine has been desig-
ned to use premium unleaded gasoli-ne with a research octane number of
95 or higher. If knocking (or pinging)
occurs, use a gasoline of a different
brand. Use of unleaded fuel will
extend spark plug life and reduce
maintenance costs.
EAUB1300
Fuel tank breather/overflow
hose
1. Fuel tank breather/overflow hose
2. Hose clamp
Before operating the motorcycle:
Check the fuel tank breather/over-
flow hose connection.
Check the fuel tank
breather/overflow hose for
cracks or damage, and replace it
if damaged.
Make sure that the end of the fuel
tank breather/overflow hose is
not blocked, and clean it if
necessary.
Make sure that the end of the fuel
tank breather/overflow hose is
positioned inside of the clamp.
NOTICE
Recommended fuel:
PREMIUM UNLEADED
GASOLINE ONLY
Fuel tank capacity:
23.0 L (6.08 US gal, 5.06 Imp.gal)
Fuel reserve amount:
XT660Z 6.7 L (1.76 US gal,
1.46 Imp.gal)
XT660ZA 5.8 L (1.53 US gal,
1.28 Imp.gal)
INSTRUMENT AND CONTROL FUNCTIONS
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-3
6
EAU46861
TIP
The annual checks must be performed every year, except if a kilometer-based maintenance, or for the UK,
a mileage-based maintenance, is performed instead.
From 50000 km (30000 mi), repeat the maintenance intervals starting from 10000 km (6000 mi).
Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and
technical skills.
EAU46910
Periodic maintenance chart for the emission control system
ODOMETER READING
NO. ITEM CHECK OR MAINTENANCE JOBANNUAL
1000 km 10000 km 20000 km 30000 km 40000 kmCHECK
(600 mi) (6000 mi) (12000 mi) (18000 mi) (24000 mi)
1*Fuel line• Check fuel hoses for cracks or
damage.√√√ √√
2Spark plug• Check condition.
• Clean and regap.√√
• Replace.√√
3*Valves• Check valve clearance.
• Adjust.√√
4*Fuel injection• Adjust engine idling speed.√√ √ √ √ √
5*Mufflers and exhaust• Check the screw clamps for
pipeslooseness.√√ √ √ √
• Check the air cut-off valve, reed
6*Air induction systemvalve, and hose for damage.
√√√ √√
• Replace any damaged parts if
necessary.
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Rear brake (for XT660ZA)
1. Minimum level mark
Insufficient brake fluid may allow air
to enter the brake system, possibly
causing it to become ineffective.
Before riding, check that the brake
fluid is above the minimum level mark
and replenish if necessary. A low bra-
ke fluid level may indicate worn brake
pads and/or brake system leakage. If
the brake fluid level is low, be sure to
check the brake pads for wear and
the brake system for leakage.
TIP
For XT660ZA, the rear brake fluid
reservoir is located under the seat.
(See page 3-16).
Observe these precautions:
When checking the fluid level,
make sure that the top of the bra-
ke fluid reservoir is level.
Use only the recommended qua-
lity brake fluid, otherwise the rub-
ber seals may deteriorate, cau-
sing leakage and poor braking
performance.
Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor braking performan-
ce.
Be careful that water or dust
does not enter the brake fluid
reservoir when refilling. Water will
significantly lower the boiling
point of the fluid and may result
in vapor lock, and dirt may clog
the ABS hydraulic unit valves.
Brake fluid may deteriorate pain-
ted surfaces or plastic parts.
Always clean up spilled fluid
immediately.
As the brake pads wear, it is nor-
mal for the brake fluid level to
gradually go down. However, if
the brake fluid level goes down
suddenly, have a Yamaha dealer
check the cause.
EAU22731
Changing the brake fluid
Have a Yamaha dealer change the
brake fluid at the intervals specified in
the TIP after the periodic maintenan-
ce and lubrication chart. In addition,
have the oil seals of the master cylin-
ders and calipers as well as the brake
hoses replaced at the intervals listed
below or whenever they are damaged
or leaking.
Oil seals: Replace every two
years.
Brake hoses: Replace every four
years.
Recommended brake fluid:
DOT 4
PERIODIC MAINTENANCE AND ADJUSTMENT
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