2015 YAMAHA XT660Z ABS

INSTRUMENT AND CONTROL FUNCTIONS
3-12
3
EAU51802
ABS (for ABS models)The Yamaha ABS (Anti-lock Brake
System) features a dual electronic con-
trol system, which acts on the front and
rear brakes independently.
Operate the brakes with ABS as you
would conventional brakes. If the ABS
is activated, a pulsating sensation may
be felt at the brake lever or brake ped-
al. In this situation, continue to apply
the brakes and let the ABS work; do
not “pump” the brakes as this will re-
duce braking effectiveness.
WARNING
EWA16051
Always keep a sufficient distance
from the vehicle ahead to match the
riding speed even with ABS.
The ABS performs best with
long braking distances.
On certain surfaces, such as
rough or gravel roads, the brak-
ing distance may be longer with
the ABS than without.The ABS is monitored by an ECU,
which will revert the system to conven-
tional braking if a malfunction occurs.
TIPThe ABS performs a self-diagno-
sis test each time the vehicle first
starts off after the key is turned to
“ON” and the vehicle has traveled
at a speed of 10 km/h (6 mi/h) or
higher. During this test, a “click-
ing” noise can be heard from un-
der the seat, and if the brake lever
or brake pedal is even slightly ap-
plied, a vibration can be felt at the
lever and pedal, but these do not
indicate a malfunction.
This ABS has a test mode which
allows the owner to experience
the pulsation at the brake lever or
brake pedal when the ABS is op-
erating. However, special tools are
required, so please consult your
Yamaha dealer.NOTICE
ECA16121
Keep any type of magnets (including
magnetic pick-up tools, magnetic
screwdrivers, etc.) away from the
front and rear wheel hubs, otherwise
the magnetic rotors equipped in thewheel hubs may be damaged, re-
sulting in improper performance of
the ABS system.
1. Front wheel hub
1. Rear wheel hub
U2BDE1E0.book Page 12 Tuesday, December 16, 2014 5:38 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-18
3
EAUB1463
Adjusting the shock absorber
assemblyThis shock absorber assembly is
equipped with a spring preload adjust-
ing ring.NOTICE
ECA10102
To avoid damaging the mechanism,
do not attempt to turn beyond the
maximum or minimum settings.Adjust the spring preload as follows.
To increase the spring preload and
thereby harden the suspension, turn
the adjusting ring in direction (a). To
decrease the spring preload and there-
by soften the suspension, turn the ad-
justing ring in direction (b).TIPAlign the appropriate notch in the ad-
justing ring with the position indicator
on the shock absorber.
WARNING
EWAB0021
Never adjust the spring preload until
the exhaust system has cooled
down.
WARNING
EWA10222
This shock absorber assembly con-
tains highly pressurized nitrogen
gas. Read and understand the fol-
lowing information before handling
the shock absorber assembly.
Do not tamper with or attempt
to open the cylinder assembly.
Do not subject the shock ab-
sorber assembly to an open
flame or other high heat source.
This may cause the unit to ex-
plode due to excessive gas
pressure.
Do not deform or damage the
cylinder in any way. Cylinder
damage will result in poor
damping performance.
Do not dispose of a damaged or
worn-out shock ab
sorber as-
sembly yourself. Take the shock
absorber assembly to a Yamaha
dealer for any service.
1. Spring preload adjusting ring
2. Position indicator
Spring preload setting:
Minimum (soft):
1
Standard:
2
Maximum (hard):
9
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OPERATION AND IMPORTANT RIDING POINTS
5-2
5High beam indicator light
Engine trouble warning light
Coolant temperature warning
light
Immobilizer system indicator
light
ABS warning light (for ABS
model)
If a warning or indicator light does
not go off, see page 3-4 for the cor-
responding warning and indicator
light circuit check.
2. Shift the transmission into the
neutral position.TIPWhen the transmission is in the neutral
position, the neutral indicator light
should be on, otherwise have a
Yamaha dealer check the electrical cir-
cuit.3. Start the engine by pushing the
start switch.TIPIf the engine fails to start, release the
start switch, wait a few seconds, and
then try again. Each starting attempt
should be as short as possible to pre-serve the battery. Do not crank the en-
gine more than 10 seconds on any one
attempt.
TIPThe engine is warm when it quickly re-
sponds to the throttle.NOTICE
ECA11043
For maximum engine life, never ac-
celerate hard when the engine is
cold!
EAU16673
ShiftingShifting gears lets you control the
amount of engine power available for
starting off, accelerating, climbing hills,
etc.
The gear positions are shown in the il-
lustration.TIPTo shift the transmission into the neu-
tral position, press the shift pedal down
repeatedly until it reaches the end of its
travel, and then slightly raise it.1. Shift pedal
2. Neutral positionZAUM12612
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-6
6
19*Shock absorber as-
sembly• Check operation and shock ab-
sorber for oil leakage.√√√√
20*Rear suspension re-
lay arm and con-
necting arm
pivoting points• Check operation.√√√√
• Lubricate with lithium-soap-
based grease.√√
21 Engine oil• Change.
• Check oil level and vehicle for oil
leakage.√√√√√√
22Engine oil filter ele-
ment• Replace.√√√
23*Cooling system• Check coolant level and vehicle
for coolant leakage.√√√√√
• Change coolant. Every 3 years
24*Front and rear
brake switches• Check operation.√√√√√√
25Moving parts and
cables• Lubricate.√√√√√
26*Throttle grip• Check operation.
• Check throttle grip free play, and
adjust if necessary.
• Lubricate cable and grip housing.√√√√√
27*Lights, signals and
switches• Check operation.
• Adjust headlight beam.√√√√√√ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING
ANNUAL
CHECK 1000 km
(600 mi)10000 km
(6000 mi)20000 km
(12000 mi)30000 km
(18000 mi)40000 km
(24000 mi)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-22
6Rear brake (for XT660Z)
Rear brake (for XT660ZA)
TIPThe rear brake fluid reservoir is located
under the seat. (See page 3-16.)
WARNING
EWA16011
Improper maintenance can result in
loss of braking ability. Observe
these precautions:
Insufficient brake fluid may al-
low air to enter the brake sys-
tem, reducing braking
performance.
Clean the filler cap before re-
moving. Use only DOT 4 brake
fluid from a sealed container.
Use only the specified brake flu-
id; otherwise, the rubber seals
may deteriorate, causing leak-
age.
Refill with the same type of
brake fluid. Adding a brake fluid
other than DOT 4 may result in a
harmful chemical reaction.
Be careful that water or dust
does not enter the brake fluid
reservoir when refilling. Water
will significantly lower the boil-
ing point of the fluid and may re-sult in vapor lock, and
dirt may
clog the ABS hydraulic unit
valves.
NOTICE
ECA17641
Brake fluid may damage painted
surfaces or plastic parts. Always
clean up spilled fluid immediately.As the brake pads wear, it is normal for
the brake fluid level to gradually go
down. A low brake fluid level may indi-
cate worn brake pads and/or brake
system leakage; therefore, be sure to
check the brake pads for wear and the
brake system for leakage. If the brake
fluid level goes down suddenly, have a
Yamaha dealer check the cause before
further riding.
1. Minimum level mark
1. Minimum level mark
Specified brake fluid:
DOT 4
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-31
6
EAUS1934
Replacing the fusesTo replace the fuses (XT660Z):
The main fuse and fuse box 1 (for indi-
vidual circuits) are located under the
seat. (See page 3-16.)
To replace the fuses (XT660ZA):
The main fuse and fuse box 1 (for ABS
model only), which are in a different
and hard-to-reach location, must be
replaced by a Yamaha dealer.
Fuse box 2 (for ABS model only) and
fuse box 3 (for individual circuits) are
located under the seat. (See page
3-16.)To access fuse box 2, pull it upward
and then open it.
If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off
the electrical circuit in question.
2. Remove the blown fuse, and then
install a new fuse of the specified
amperage. WARNING! Do not1. Main fuse
2. Spare main fuse
1. Fuse box 1
2. Parking lighting fuse
3. Signaling system fuse
4. Headlight fuse
5. Ignition fuse
6. ECU fuse
7. Radiator fan motor fuse
8. Backup fuse
9. Spare fuseZAUM1269
1. Fuse box 2
2. ABS control unit fuse
3. Spare fuse
4. Fuse box 3
5. Parking lighting fuse
6. Signaling system fuse
7. Headlight fuse
8. Ignition fuse
9. ECU fuse
10.Radiator fan motor fuse
11.Backup fuse
2
34567
1SPA RE
SPA RE SPA RE
ZAUM1247
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-32
6use a fuse of a higher amperage
rating than recommended to
avoid causing extensive dam-
age to the electrical system and
possibly a fire.
[EWA15132]
3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
EAUB1583
Replacing a headlight bulbThis model is equipped with halogen
bulb headlights. If a headlight bulb
burns out, replace it as follows.NOTICE
ECA10651
Take care not to damage the follow-
ing parts:
Headlight bulb
Do not touch the glass part of
the headlight bulb to keep it free
from oil, otherwise the transpar-
ency of the glass, the luminosity
of the bulb, and the bulb life will
be adversely affected. Thor-
oughly clean off any dirt and fin-
gerprints on the headlight bulb
using a cloth moistened with al-
cohol or thinner.
Headlight lens
Do not affix any type of tinted
film or stickers to the headlight
lens.
Do not use a headlight bulb of a
wattage higher than specified.
Specified fuses:
Main fuse:
30.0 A
Parking lighting fuse:
10.0 A
Signaling system fuse:
10.0 A
Headlight fuse:
20.0 A
Ignition fuse:
10.0 A
Fuel injection system fuse:
10.0 A
Radiator fan motor fuse:
7.5 A
Backup fuse:
10.0 A
ABS motor fuse:
XT660ZA 30.0 A
ABS solenoid fuse:
XT660ZA 20.0 A
ABS control unit fuse:
XT660ZA 5.0 A
U2BDE1E0.book Page 32 Tuesday, December 16, 2014 5:38 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-36
6
EAU44792
Front wheel (for non-ABS
models)
WARNING
EWA14841
For the ABS model, have a Yamaha
dealer remove and install the wheel.
EAU56480
To remove the front wheel
WARNING
EWA10822
To avoid injury, securely support the
vehicle so there is no danger of it
falling over.1. Loosen the front wheel axle pinch
bolts, the wheel axle and the
brake caliper bolts.2. Lift the front wheel off the ground
according to the procedure in the
previous section “Supporting the
motorcycle”.
3. Remove the brake caliper on each
side by removing the bolts.
NOTICE: Do not apply the brake
after the brake calipers have
been removed, otherwise the
brake pads will be forced shut.
[ECA11052]
4. Pull the wheel axle out, and then
remove the wheel.To install the front wheel
1. Lift the wheel up between the fork
legs.
2. Insert the wheel axle.
3. Install the brake calipers by install-
ing the bolts.
TIPMake sure that there is enough space
between the brake pads before install-
ing the brake calipers onto the brake
discs.4. Lower the front wheel so that it is
on the ground.
5. Tighten the wheel axle and the
brake caliper bolts to the specified
torques.NOTICE
ECAB0062
Be sure the right brake disc is posi-
tioned exactly between the brake
pads to prevent any brake drag. Tap
the side of the right fork leg to posi-
tion the disc correctly.6. Tighten wheel axle pinch bolt A,
and then pinch bolt B to their
specified torque.
1. Wheel axle
2. Brake caliper bolt
3. Front wheel axle pinch boltZAUM1266
U2BDE1E0.book Page 36 Tuesday, December 16, 2014 5:38 PM