2015 YAMAHA XT660Z checking oil

TABLE OF CONTENTSSAFETY INFORMATION.................. 1-1
DESCRIPTION.................................. 2-1
Left view ......................................... 2-1
Right view ....................................... 2-3
Controls and instruments ............... 2-5
INSTRUMENT AND CONTROL
FUNCTIONS...................................... 3-1
Immobilizer system......................... 3-1
Main switch/steering lock............... 3-2
Indicator lights and warning
lights............................................ 3-4
Multi-function display ..................... 3-6
Handlebar switches ........................ 3-9
Clutch lever .................................. 3-10
Shift pedal .................................... 3-11
Brake lever.................................... 3-11
Brake pedal .................................. 3-11
ABS (for ABS models) .................. 3-12
Fuel tank cap ................................ 3-13
Fuel ............................................... 3-13
Fuel tank breather/overflow
hose .......................................... 3-15
Catalytic converter ....................... 3-15
Seat .............................................. 3-16
Adjusting the front fork ................. 3-16
Adjusting the shock absorber
assembly ................................... 3-18
Sidestand ..................................... 3-19
Ignition circuit cut-off system ....... 3-19FOR YOUR SAFETY –
PRE-OPERATION CHECKS............. 4-1
OPERATION AND IMPORTANT
RIDING POINTS................................ 5-1
Starting the engine .......................... 5-1
Shifting ............................................ 5-2
Tips for reducing fuel
consumption ................................ 5-3
Engine break-in ............................... 5-3
Parking ............................................ 5-4
PERIODIC MAINTENANCE AND
ADJUSTMENT................................... 6-1
Owner’s tool kit ............................... 6-2
Periodic maintenance chart for the
emission control system .............. 6-3
General maintenance and
lubrication chart ........................... 6-4
Removing and installing panels ...... 6-8
Checking the spark plug ................. 6-9
Engine oil and oil filter element ..... 6-10
Coolant.......................................... 6-13
Replacing the air filter element
and cleaning the check hose..... 6-14
Adjusting the engine idling
speed ......................................... 6-16
Checking the throttle grip free
play ............................................ 6-16
Valve clearance ............................. 6-17
Tires .............................................. 6-17Spoke wheels ............................... 6-19
Adjusting the clutch lever free
play ............................................ 6-20
Checking the front and rear brake
pads .......................................... 6-21
Checking the brake fluid level ...... 6-21
Changing the brake fluid .............. 6-23
Drive chain slack........................... 6-23
Cleaning and lubricating the drive
chain.......................................... 6-24
Checking and lubricating the
cables ........................................ 6-25
Checking and lubricating the
throttle grip and cable ............... 6-25
Checking and lubricating the
brake and clutch levers ............. 6-26
Checking and lubricating the
brake pedal ............................... 6-26
Checking and lubricating the
sidestand................................... 6-27
Lubricating the rear suspension ... 6-27
Lubricating the swingarm
pivots......................................... 6-27
Checking the front fork ................. 6-28
Checking the steering................... 6-28
Checking the wheel bearings ....... 6-29
Battery .......................................... 6-29
Replacing the fuses ...................... 6-31
Replacing a headlight bulb ........... 6-32
Replacing an auxiliary light bulb ... 6-34
Tail/brake light .............................. 6-34U2BDE1E0.book Page 1 Tuesday, December 16, 2014 5:38 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-10
6
To install the spark plug
1. Clean the surface of the spark
plug gasket and its mating sur-
face, and then wipe off any grime
from the spark plug threads.
2. Install the spark plug with the
spark plug wrench, and then tight-
en it to the specified torque.
TIPIf a torque wrench is not available
when installing a spark plug, a good
estimate of the correct torque is 1/4…
1/2 turn past finger tight. However, the
spark plug should be tightened to the
specified torque as soon as possible.3. Install the spark plug cap.
EAUB1567
Engine oil and oil filter ele-
mentThe engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter ele-
ment replaced at the intervals specified
in the periodic maintenance and lubri-
cation chart.
To check the engine oil level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.TIPMake sure that the vehicle is posi-
tioned straight up when checking the
oil level. A slight tilt to the side can re-
sult in a false reading.2. Start the engine, warm it up for
10…15 minutes, and then turn it off.
3. Remove the oil filler cap, wipe the
dipstick clean, insert it back into
the oil filler hole (without screwing
it in), and then remove it again to
check the oil level. WARNING!
Never remove the engine oil fill-
er cap after high-speed opera-
1. Spark plug gapSpark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf, 9.04 ft·lbf)
1
ZAUM0037
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-13
6
TIPBe sure to wipe off spilled oil on any
parts after the engine and exhaust sys-
tem have cooled down.NOTICE
ECA11621
In order to prevent clutch slip-
page (since the engine oil also
lubricates the clutch), do not
mix any chemical additives. Do
not use oils with a diesel speci-
fication of “CD” or oils of a high-
er quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.
Make sure that no foreign mate-
rial enters the crankcase.14. Start the engine, and then let it idle
for several minutes while checking
it for oil leakage. If oil is leaking,
immediately turn the engine off
and check for the cause.
15. Turn the engine off, and then
check the oil level and correct it if
necessary.16. Install the engine guard by install-
ing the screws.
EAU20071
CoolantThe coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU20257
To check the coolant level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.TIPThe coolant level must be
checked on a cold engine since
the level varies with engine tem-
perature.
Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to the
side can result in a false reading.2. Check the coolant level in the
coolant reservoir.TIPThe coolant should be between the
minimum and maximum level marks.
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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)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-28
6
EAU23273
Checking the front forkThe condition and operation of the
front fork must be checked as follows
at the intervals specified in the periodic
maintenance and lubrication chart.
To check the condition
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion. WARNING! To avoid injury,
securely support the vehicle so
there is no danger of it falling
over.
[EWA10752]
2. While applying the front brake,
push down hard on the handle-
bars several times to check if the
front fork compresses and re-
bounds smoothly.
NOTICE
ECA10591
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-
pair it.
EAU23285
Checking the steeringWorn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as fol-
lows at the intervals specified in the
periodic maintenance and lubrication
chart.
1. Raise the front wheel off the
ground. (See page 6-35.)
WARNING! To avoid injury, se-
curely support the vehicle so
there is no danger of it falling
over.
[EWA10752]
2. Hold the lower ends of the front
fork legs and try to move them for-
ward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the steer-
ing.
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10-1
10
INDEX
AABS (for ABS models) .......................... 3-12
ABS warning light (for ABS models) ....... 3-5
Air filter element and check hose,
replacing and cleaning ....................... 6-14
Auxiliary light bulb, replacing ............... 6-34BBattery .................................................. 6-29
Brake and clutch levers, checking and
lubricating........................................... 6-26
Brake fluid, changing............................ 6-23
Brake fluid level, checking.................... 6-21
Brake lever............................................ 3-11
Brake pedal .......................................... 3-11
Brake pedal, checking and
lubricating........................................... 6-26CCables, checking and lubricating ......... 6-25
Care ........................................................ 7-1
Catalytic converter ............................... 3-15
Clutch lever........................................... 3-10
Clutch lever free play, adjusting ........... 6-20
Coolant ................................................. 6-13
Coolant temperature warning light ......... 3-4DDimmer switch........................................ 3-9
Drive chain, cleaning and lubricating ... 6-24
Drive chain slack .................................. 6-23EEngine break-in ...................................... 5-3
Engine idling speed .............................. 6-16
Engine oil and oil filter element............. 6-10
Engine stop switch ............................... 3-10
Engine trouble warning light ................... 3-5
FFront and rear brake pads, checking ... 6-21
Front fork, adjusting ............................. 3-16
Front fork, checking ............................. 6-28
Fuel ...................................................... 3-13
Fuel consumption, tips for reducing ...... 5-3
Fuel tank breather/overflow hose ........ 3-15
Fuel tank cap........................................ 3-13
Fuses, replacing ................................... 6-31HHandlebar switches ............................... 3-9
Hazard switch ...................................... 3-10
Headlight bulb, replacing ..................... 6-32
High beam indicator light ....................... 3-4
Horn switch .......................................... 3-10IIdentification numbers ........................... 9-1
Ignition circuit cut-off system .............. 3-19
Immobilizer system ................................ 3-1
Immobilizer system indicator light ......... 3-5
Indicator lights and warning lights ......... 3-4LLicense plate light bulb, replacing ....... 6-35MMain switch/steering lock ...................... 3-2
Maintenance and lubrication, periodic... 6-4
Maintenance, emission control
system ................................................. 6-3
Matte color, caution ............................... 7-1
Model label............................................. 9-1
Multi-function display............................. 3-6NNeutral indicator light ............................. 3-4
PPanels, removing and installing .............. 6-8
Parking.................................................... 5-4
Part locations.......................................... 2-1
Pass switch............................................. 3-9RRear suspension, lubricating ................ 6-27SSafety information................................... 1-1
Seat....................................................... 3-16
Shifting.................................................... 5-2
Shift pedal............................................. 3-11
Shock absorber assembly, adjusting ... 3-18
Sidestand.............................................. 3-19
Sidestand, checking and lubricating .... 6-27
Spark plug, checking .............................. 6-9
Specifications ......................................... 8-1
Starting the engine ................................. 5-1
Start switch ........................................... 3-10
Steering, checking ................................ 6-28
Storage ................................................... 7-3
Supporting the motorcycle ................... 6-35
Swingarm pivots, lubricating ................ 6-27TTail/brake light ...................................... 6-34
Throttle grip and cable, checking and
lubricating ........................................... 6-25
Throttle grip free play, checking ........... 6-16
Tires ...................................................... 6-17
Tool kit .................................................... 6-2
Troubleshooting .................................... 6-39
Troubleshooting charts ......................... 6-40
Turn signal indicator light ....................... 3-4
Turn signal light bulb, replacing............ 6-34
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