Page 12 of 98

SAFETY INFORMATION
1-5
1Aftermarket Tires and Rims
The tires and rims that came with your
motorcycle were designed to match
the performance capabilities and to
provide the best combination of han-
dling, braking, and comfort. Other
tires, rims, sizes, and combinations
may not be appropriate. Refer to page
6-17 for tire specifications and more in-
formation on replacing your tires.
Transporting the Motorcycle
Be sure to observe following instruc-
tions before transporting the motorcy-
cle in another vehicle.
Remove all loose items from the
motorcycle.
Check that the fuel cock (if
equipped) is in the “OFF” position
and that there are no fuel leaks.
Point the front wheel straight
ahead on the trailer or in the truck
bed, and choke it in a rail to pre-
vent movement.
Shift the transmission in gear (for
models with a manual transmis-
sion).Secure the motorcycle with tie-
downs or suitable straps that are
attached to solid parts of the mo-
torcycle, such as the frame or up-
per front fork triple clamp (and not,
for example, to rubber-mounted
handlebars or turn signals, or
parts that could break). Choose
the location for the straps carefully
so the straps will not rub against
painted surfaces during transport.
The suspension should be com-
pressed somewhat by the tie-
downs, if possible, so that the mo-
torcycle will not bounce exces-
sively during transport.
U2BDE1E0.book Page 5 Tuesday, December 16, 2014 5:38 PM
Page 63 of 98

PERIODIC MAINTENANCE AND ADJUSTMENT
6-19
6
WARNING
EWA10572
Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the mo-torcycle with excessively worn
tires decreases riding stability
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.
Ride at moderate speeds after
changing a tire since the tire
surface must first be “
broken
in” for it to develop its optimal
characteristics.
EAU21944
Spoke wheels
WARNING
EWA10611
The wheels on this model are not
designed for use with tubeless tires.
Do not attempt to use tubeless tires
on 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, warp-
age or other damage, and the
spokes for looseness or damage
before each ride. If any damage is
found, have a Yamaha dealer re-
place 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:
XT660Z 90/90-21 M/C 54S(MET-
ZELER)-54T(MICHELIN)
XT660ZA 90/90-21 M/C
54S(PIRELLI)
Manufacturer/model:
XT660Z METZELER/TOURANCE
FRONT
XT660ZA PIRELLI/SCORPION
TRAIL
XT660Z MICHELIN/SIRAC
Rear tire:
Size:
XT660Z 130/80-17 M/C
65S(METZELER)-65T(MICHELIN)
XT660ZA 130/80-17 M/C
65S(PIRELLI)
Manufacturer/model:
XT660Z METZELER/TOURANCE
FRONT
XT660ZA PIRELLI/SCORPION
TRAIL
XT660Z MICHELIN/SIRAC
U2BDE1E0.book Page 19 Tuesday, December 16, 2014 5:38 PM
Page 91 of 98

SPECIFICATIONS
8-2
8
Secondary reduction ratio:
45/15 (3.000)
Transmission type:
Constant mesh 5-speed
Operation:
Left foot operation
Gear ratio:
1st:
30/12 (2.500)
2nd:
26/16 (1.625)
3rd:
23/20 (1.150)
4th:
20/22 (0.909)
5th:
20/26 (0.769)Chassis:Frame type:
Diamond
Caster angle:
28.00 °
Trail:
XT660Z 113 mm (4.4 in)
XT660ZA 120 mm (4.7 in)Front tire:Type:
With tube
Size:
XT660Z 90/90-21 M/C 54S(METZELER)-
54T(MICHELIN)
XT660ZA 90/90-21 M/C 54S(PIRELLI)Manufacturer/model:
XT660Z METZELER/TOURANCE FRONT
XT660ZA PIRELLI/SCORPION TRAIL
Manufacturer/model:
XT660Z MICHELIN/SIRAC
Rear tire:Type:
With tube
Size:
XT660Z 130/80-17 M/C 65S(METZELER)-
65T(MICHELIN)
XT660ZA 130/80-17 M/C 65S(PIRELLI)
Manufacturer/model:
XT660Z METZELER/TOURANCE FRONT
XT660ZA PIRELLI/SCORPION TRAIL
Manufacturer/model:
XT660Z MICHELIN/SIRACLoading:Maximum load:
190 kg (419 lb)
(Total weight of rider, passenger, cargo
and accessories)Tire air pressure (measured on cold
tires):Loading condition:
0–90 kg (0–198 lb)
Front:
210 kPa (2.10 kgf/cm², 30 psi)
Rear:
230 kPa (2.30 kgf/cm², 33 psi)
Loading condition:
90–190 kg (198–419 lb)Front:
XT660Z 210 kPa (2.10 kgf/cm², 30 psi)
XT660ZA 230 kPa (2.30 kgf/cm², 33 psi)
Rear:
XT660Z 230 kPa (2.30 kgf/cm², 33 psi)
XT660ZA 250 kPa (2.50 kgf/cm², 36 psi)
Off-road riding:
Front:
XT660Z 200 kPa (2.00 kgf/cm², 29 psi)
Rear:
XT660Z 200 kPa (2.00 kgf/cm², 29 psi)
High-speed riding:
Front:
210 kPa (2.10 kgf/cm², 30 psi)
Rear:
230 kPa (2.30 kgf/cm², 33 psi)
Front wheel:Wheel type:
Spoke wheel
Rim size:
21 x 1.85Rear wheel:Wheel type:
Spoke wheel
Rim size:
17 x 2.75Front brake:Type:
Dual disc brake
Operation:
Right hand operation
Specified brake fluid:
DOT 4
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