Page 44 of 80
PERIODIC MAINTENANCE AND ADJUSTMENT
6-14
6Tire information
This motorcycle is equipped with tube
tires.
WARNING
EWA10461
The front and rear tires should be of
the same make and design, other-
wise the handling characteristics of
the vehicle may be different, whichcould lead to an accident.
After extensive tests, only the tires list-
ed below have been approved for this
model by Yamaha Motor Co., Ltd.
WARNING
EWA10570
Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating themotorcycle with excessively
worn tires decreases riding sta-
bility and can lead to loss of
control.
The replacement of all wheel-
and brake-related parts, includ-
ing the tires, should be left to a
Yamaha dealer, who has the
necessary professional knowl-
edge and experience.
It is not recommended to patch
a punctured tube. If unavoid-
able, however, patch the tube
very carefully and replace it as
soon as possible with a high-quality product.
EAU22000
Cast wheels
WARNING
EWA10610
The wheels on this model are not de-
signed for use with tubeless tires.
Do not attempt to use tubeless tireson this model.
To maximize the performance, durabil-
ity, and safe operation of your motor-
cycle, note the following points
regarding the specified wheels.
The wheel rims should be checked
for cracks, bends, warpage or
damage before each ride. If any
damage is found, have a Yamaha
dealer replace the wheel. Do not
attempt even the smallest repair to
the wheel. A deformed or cracked
wheel must be replaced.
The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.
Front tire:
Size:
70/90-17M/C 38P
Manufacturer/model:
DUNLOP
Rear tire:
Size:
80/90-17M/C 50P
Manufacturer/model:
DUNLOP
U40BE0E0.book Page 14 Wednesday, January 7, 2009 10:05 AM
Page 48 of 80
PERIODIC MAINTENANCE AND ADJUSTMENT
6-18
6
Brake fluid may deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up spilled fluid
immediately.
As the brake pads wear, it is nor-
mal for the brake fluid level to grad-
ually go down. However, if the
brake fluid level goes down sud-
denly, have a Yamaha dealer
check the cause.
EAU22721
Changing the brake fluid Have a Yamaha dealer change the
brake fluid at the intervals specified in
the TIP after the periodic maintenance
and lubrication chart. In addition, have
the oil seals of the brake master cylin-
der and caliper as well as the brake
hose replaced at the intervals listed be-
low or whenever they are damaged or
leaking.
Oil seals: Replace every two
years.
Brake hose: Replace every four
years.
EAU22760
Drive chain slack The drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU47680
To check the drive chain slack
1. Place the motorcycle on the cen-
terstand.
2. Shift the transmission into the neu-
tral position.
3. Remove the drive chain slack
check hole cap.
4. Spin the rear wheel several times
to locate the tightest portion of the
drive chain.
5. Measure the drive chain slack as
shown.1. Drive chain slack check hole cap
1
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Page 71 of 80
SPECIFICATIONS
8-1
8
Dimensions:Overall length:
1885 mm (74.2 in)
Overall width:
675 mm (26.6 in)
Overall height:
1040 mm (40.9 in)
Seat height:
770 mm (30.3 in)
Wheelbase:
1200 mm (47.2 in)
Ground clearance:
130 mm (5.12 in)
Minimum turning radius:
1900 mm (74.8 in)Weight:With oil and fuel:
101.0 kg (223 lb)Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
110.3 cm³
Bore × stroke:
51.0 × 54.0 mm (2.01 × 2.13 in)
Compression ratio:
9.30 :1
Starting system:
Electric starter and kickstarter
Lubrication system:
Wet sump
Engine oil:Type:
SAE 10W-30, SAE 10W-40, SAE 20W-40
or SAE 20W-50
Recommended engine oil grade:
API service SE, SF, SG type or higher,
JASO standard MA
Engine oil quantity:
Periodic oil change:
0.80 L (0.85 US qt, 0.70 Imp.qt)Air filter:Air filter element:
Dry elementFuel:Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
4.2 L (1.11 US gal, 0.92 Imp.gal)
Fuel reserve amount:
1.0 L (0.26 US gal, 0.22 Imp.gal)
Carburetor:Type × quantity:
VM17SH x 1Spark plug (s):Manufacturer/model:
TORCH/A7RTC
Manufacturer/model:
NGK/CR6HSA
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:
Wet, multiple-disc and centrifugal
automaticTransmission:Primary reduction system:
Spur gear
Primary reduction ratio:
67/18 (3.722)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
35/15 (2.333)
Transmission type:
Constant mesh 4-speed
Operation:
Left foot operation
Gear ratio:
1st:
38/12 (3.166)
2nd:
33/17 (1.941)
3rd:
29/21 (1.380)
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U40BE0E0.book Page 1 Wednesday, January 7, 2009 10:05 AM