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INSTRUMENT AND CONTROL FUNCTIONS
4-13
your skin, wash with soap and wa-
ter. If gasoline spills on your cloth-
ing, change your clothes.
EAU13390EAU13412
Fuel tank breather hose
1. Fuel tank breather hose
2. Clamp
Before operating the motorcycle:
●Check the fuel tank breather hose
connection.
●Check the fuel tank breather hose
for cracks or damage, and replace
it if damaged.
●Make sure that the fuel tank
breather hose is not blocked, and
clean it if necessary.
ECA11400
NOTICE
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 system.
Your Yamaha engine has been de-
signed to use premium unleaded
gasoline with a research octane num-
ber 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.
Recommended fuel:
PREMIUM UNLEADED
GASOLINE ONLY
Fuel tank capacity:
23.0 L (6.07 US gal) (5.05 Imp.gal)
Fuel reserve amount (when the fuel
level warning light comes on):
6.7 L (1.77 US gal) (1.47 Imp.gal)
EAU13433
Catalytic converter
This model is equipped with a catalyt-
ic converter in the exhaust system.
EWA10862
WARNING0
The exhaust system is hot after op-
eration. To prevent a fire hazard or
burns:
●Do not park the vehicle near
possible fire hazards such as
grass or other materials that
easily burn.
●Park the vehicle in a place
where pedestrians or children
are not likely to touch the hot
exhaust system.
●Make sure that the exhaust
system has cooled down be-
fore doing any maintenance
work.
●Do not allow the engine to idle
more than a few minutes. Long
idling can cause a build-up of
heat.
XT660Z 04-04 ING-AUS:MY03 01-03 ING 11-05-2009 9:54 Pagina 4-13
SPECIFICATIONS
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Engine oil:Type:
SAE10W30 or SAE10W40 or SAE15W40
or SAE20W40 or SAE20W50
Recommended engine oil grade:
API service SE, SF, SG type or higher
Engine oil quantity:
Without oil filter element replacement:
2.50 L (2.64 US qt) (2.19 Imp.qt)
With oil filter element replacement:
2.60 L (2.73 US qt) (2.26 Imp.qt)
Total amount (dry engine):
2.90 L (3.07 US qt) (2.55 Imp.qt)
Cooling system:Radiator capacity (including all routes):
1.2 L (1.26 US qt) (1.05 Imp.qt) (Radiator) +
0.5 L (0.52 US qt) (0.44 Imp.qt)
(Coolant reservoir)
Coolant reservoir capacity (up to the
maximum level mark):
0.50 L (0.52 US qt) (0.44 Imp.qt)
From low to full level:
0.30 L (0.32 US qt) (0.26 Imp.qt)
Air filter:Air filter element:
Paper
Fuel:Recommended fuel:
Premium unleaded gasoline only
Fuel tank capacity:
23.0 L (6.07 US gal) (5.06 Imp.gal)
Fuel reserve amount:
6.7 L (1.76 US gal) (1.46 Imp.gal)
Fuel injection:Manufacturer:
DENSO
Model:
297500-0390
Spark plug:Manufacturer/model:NGK/CR7EGap:
0.7-0.8 mm (0.028-0.032 in)
Clutch:Clutch type:
Wet, multiple-disc
Transmission:Primary reduction system:
Spur gear
Primary reduction ratio:
75/36 (2.083)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
45/15 (3.00)
Transmission type:
Constant mesh 5-speed
Dimensions:Overall length:
2246 mm (88.42 in)
Overall width:
864 mm (34.01 in)
Overall height:
1477 mm (58.14 in)
Seat height:
896 mm (35.27 in)
Wheelbase:
1500 mm (59.05 in)
Ground clearance:
260 mm (10.23 in)
Minimum turning radius:
1958 mm (77.08 in)
Basic weight:With oil and fuel:
208.5 kg (459 lb)
Engine:Engine type:
Liquid cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
660.0 cm
3(40.27 cu.in)
Bore x stroke:
100.0 x 84.0 mm (3.94 x 3.31 in)
Compression ratio:
10.00 : 1
Starting system:
Electric starter
Lubrication system:
Dry sump
-20-10 0 1020304050°C
SAE 10W-30
SAE 10W-40
SAE 20W-40
SAE 20W-50
SAE 15W-40
XT660Z 08-10 ING-AUS:MY03 07-10 ING 11-05-2009 10:10 Pagina 6
