PERIODIC MAINTENANCE AND ADJUSTMENT
6-23
6
EAU22733
Changing the brake fluidHave a Yamaha dealer change the
brake fluid at the intervals specified in
the periodic maintenance and lubrica-
tion chart. In addition, have the oil seals
of the master cylinders 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.
EAU22762
Drive chain slackThe drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU22786
To check the drive chain slack
1. Place the motorcycle on the side-
stand.TIPWhen checking and adjusting the drive
chain slack, there should be no weight
on the motorcycle.2. Shift the transmission into the
neutral position.
3. Measure the drive chain slack as
shown.4. If the drive chain slack is incorrect,
adjust it as follows.
TIPWhen checking the drive chain slack,
the chain tensioner should not be
touching the drive chain.
EAU34318
To adjust the drive chain slack
Consult a Yamaha dealer before ad-
justing the drive chain slack.
1. Loosen the axle nut and the lock-
nut on each side of the swingarm.
2. To tighten the drive chain, turn the
drive chain slack adjusting bolt on
each side of the swingarm in di-
rection (a). To loosen the drive
chain, turn the adjusting bolt on
each side of the swingarm in di-
rection (b), and then push the rear
wheel forward. NOTICE: Improp-
er drive chain slack will over-
load the engine as well as other
vital parts of the motorcycle and
can lead to chain slippage or
breakage. To prevent this from
1. Drive chain slack
Drive chain slack:
50.0–60.0 mm (1.97–2.36 in)
U2BDE1E0.book Page 23 Tuesday, December 16, 2014 5:38 PM
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
U2BDE1E0.book Page 2 Tuesday, December 16, 2014 5:38 PM
