check engine YAMAHA XT660Z 2009 Owner's Manual

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PERIODIC MAINTENANCE AND MINOR REPAIR
6-29
EAU23280
Checking the steering
Worn or loose steering bearings may
cause danger. Therefore, the opera-
tion of the steering must be checked
as follows at the intervals specified in
the periodic maintenance and lubrica-
tion chart.1. Place a stand under the engine to raise the front wheel off the
ground.
EWA10750
WARNING0
Securely support the motorcycle so
that there is no danger of it falling
over.

2. Hold the lower ends of the frontfork 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 steering.EAU23290
Checking the wheel bearings
The front and rear wheel bearings
must be checked at the intervals spec-
ified in the periodic maintenance and
lubrication chart. If there is play in the
wheel hub or if the wheel does not turn
smoothly, have a Yamaha dealer
check the wheel bearings.

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PERIODIC MAINTENANCE AND MINOR REPAIR
6-36
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To service the rear wheel
Raise the rear wheel off the ground by
using a motorcycle stand or, if a mo-
torcycle stand is not available, by plac-
ing a jack either under each side of the
frame in front of the rear wheel or un-
der each side of the swingarm.EAU24360
Front wheelEAUB1440To remove the front wheel
EWA10820
WARNING0
●It is advisable to have a Yama-
ha dealer service the wheel.
●Securely support the motorcy-
cle so that there is no danger of
it falling over.
1. Wheel axle
2. Brake caliper bolts
A. Front wheel axle pinch bolt
B. Front wheel axle pinch bolt

A
2
B
1

EAU24350
Supporting the motorcycle
Since this model is not equipped with
a centerstand, follow these precau-
tions when removing the front and rear
wheel or performing other mainte-
nance requiring the motorcycle to
stand upright. Check that the motorcy-
cle is in a stable and level position be-
fore starting any maintenance. A
strong wooden box can be placed un-
der the engine for added stability.
To service the front wheel 1. Stabilize the rear of the motorcy- cle by using a motorcycle stand
or, if an additional motorcycle
stand is not available, by placing a
jack under the frame in front of the
rear wheel.
2. Raise the front wheel off the ground by using a motorcycle
stand.

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PERIODIC MAINTENANCE AND MINOR REPAIR
6-40
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EAU42130Troubleshooting charts
Starting problems or poor engine performanceEWA10840
WARNING0
Keep away open flames and do not smoke while checking or working on the \
fuel system.

1. Fuel
2. Compression
3. Ignition
4. Battery
Check the fuel level in the
fuel tank.
Operate the electric
starter.
Remove the spark plug
and check the electrodes.
Operate the electric
starter.
There is enough
fuel.
There is
compression.
Wet.
The engine turns
over quickly.
There is no fuel.
There is no
compression.
Dry.
The engine turns
over slowly.
Check the
compression.
Check the ignition.
Wipe off with a dry cloth and correct
the spark plug gap, or replace the
spark plug.
The battery is good.
Have a Yamaha dealer check the
vehicle.
Check the battery lead connections,
and charge the battery if necessary.
Open the throttle halfway and
operate the electric starter.
The engine does not start.
Check the battery.
The engine does
not start. Have a
Yamaha dealer
check the vehicle.
Supply fuel.
Have a Yamaha dealer check
the vehicle.
The engine does not start.
Check the compression.

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PERIODIC MAINTENANCE AND MINOR REPAIR
6-41
Engine overheatingEWA10400
WARNING0
●Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.
●After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, a\
nd then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hiss-
ing sound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.

NOTE:
If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended
coolant as soon as possible.
Wait until the
engine has cooled.Check the coolant level
in the reservoir and radiator.
The coolant level is low.
Check the cooling
system for leakage.
The coolant level
is OK.
There is
leakage.
There is no
leakage.
Have a Yamaha dealer check
and repair the cooling system.
Start the engine. If the engine overheats again, have
a Yamaha dealer check and repair the cooling system.
Add coolant. (See NOTE.)

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MOTORCYCLE CARE AND STORAGE
7-4
Long-term
Before storing your motorcycle for sev-
eral months:1. Follow all the instructions in the “Care” section of this chapter.
2. Fill up the fuel tank and add fuel stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
3. Perform the following steps to protect the cylinder, piston rings,
etc. from corrosion.a. Remove the spark plug cap and spark plug.
b. Pour a teaspoonful of engine oil into the spark plug bore.
c. Install the spark plug cap onto the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes
are grounded. (This will limit
sparking during the next step.)
d. Turn the engine over several times with the starter. (This will
coat the cylinder wall with oil.)
e. Remove the spark plug cap from the spark plug, and then
install the spark plug and the
spark plug cap.EWA10950
WARNING0
To prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turning
the engine over.
4. Lubricate all control cables and the pivoting points of all levers
and pedals as well as of the side-
stand/centerstand.
5. Check and, if necessary, correct the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alter-
natively, turn the wheels a little
every month in order to prevent
the tires from becoming degraded
in one spot.
6. Cover the muffler outlets with plastic bags to prevent moisture
from entering them.

7. Remove the battery and fullycharge it. Store it in a cool, dry
place and charge it once a month.
Do not store the battery in an ex-
cessively cold or warm place [less
than 0 °C (30 °F) or more than 30
°C (90 °F)]. For more information
on storing the battery, see
page 6-31.
NOTE:
Make any necessary repairs before
storing the motorcycle.

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INDEX
AAir filter element, cleaning the check hose....................................6-14
Air filter element, replacing ..............6-14
Anti-theft alarm (optional)...................3-8
Auxiliary light bulb, replacing............6-35
B Battery ..............................................6-30 To access the battery ...................6-30
To charge the battery....................6-30
To store the battery.......................6-31
Brake and clutch levers, checking and lubricating ...............6-26
Brake fluid ........................................6-22 Changing ......................................6-23
Checking fluid level .......................6-22
Brake lever .......................................3-11
Brake pads, checking .......................6-21
Brake pedal ......................................3-11 Lubricating ....................................6-27
C Cables, checking and lubricating .....6-25
Care and storage ...............................7-1
Catalytic converter ...........................3-13
Checking and lubricating the brake and clutch levers .................6-26
Checking and lubricating the brake pedal ...................................6-27
Checking and lubricating the cables ...........................................6-25 Checking and lubricating the
sidestand ......................................6-27
Checking and lubricating the throttle grip and cable ...................6-26
Checking the sidestand switch .........3-18
Clock mode ........................................3-7
Clutch lever ......................................3-10
Clutch lever free play, adjusting .......6-20
Consumer information ........................9-1
Controls and instruments ...................2-3
Function ..........................................3-1
Coolant .............................................6-12
Coolant temperature warning light .....3-4
D Description .........................................2-1 Controls and instrument .................2-3
Left view..........................................2-1
Right view .......................................2-2
Dimmer switch....................................3-9
Drive chain, cleaning and lubricating .....................................6-25
Drive chain slack ..............................6-23 Adjusting .......................................6-23
Checking .......................................6-23
Cleaning and lubricating ...............6-25
E Engine break-in ..................................5-3
Engine idling speed, adjusting .........6-15
Engine oil and oil filter element ..........6-9
Engine oil filter element....................6-10 Engine stop switch .............................3-9
Engine trouble warning light...............3-4
F Front fork ..........................................3-15 Adjusting .......................................3-15
Checking .......................................6-28
Front wheel ......................................6-36 Installing........................................6-37
Removing......................................6-36
Fuel ..................................................3-12
Fuel consumption, tips for reducing ...5-3
Fuel meter ..........................................3-7
Fuel tank breather hose ...................3-13
Fuel tank cap ...................................3-11
Fuses, replacing ...............................6-31
H Handlebar switches ............................3-9 Dimmer switch ................................3-9
Engine stop switch ..........................3-9
Hazard switch ...............................3-10
Horn switch .....................................3-9
Pass switch .....................................3-9
Start switch .....................................3-9
Turn signal switch ...........................3-9
Headlight bulb, replacing..................6-33
High beam indicator light ...................3-4
Horn switch ........................................3-9
I Identification numbers ........................9-1
Idling speed, checking .....................6-15

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INDEX
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Ignition circuit cut-off system............3-17 Checking operation procedure......3-18
Immobilizer system ............................3-1
Immobilizer system indicator light ......3-4
Indicator and warning lights ...............3-3 Coolant temperature warning
light .................................................3-4
Engine trouble warning light ...........3-4
High beam indicator light ................3-4
Immobilizer system indicator light...3-4
Neutral indicator light ......................3-4
Turn signal indicator light ................3-3
Instruments ........................................2-3
Instrument and control functions........3-1
K Key identification number ...................9-1
Keys ...................................................3-1
L License plate light bulb, replacing ....6-35
Lubricating the brake and clutch levers ..................................6-26
Lubricating the brake pedal..............6-27
Lubricating the cables ......................6-25
Lubricating the drive chain ...............6-25
Lubricating the sidestand .................6-27
Lubricating the throttle grip and cable .............................................6-26
Lubricating the swingarm pivots.......6-28
M Main switch/steering lock ...................3-2 Model label .........................................9-2
Multi-function display..........................3-5
Clock mode .....................................3-7
Self-diagnosis devices ....................3-7
Tachometer .....................................3-6
Tripmeter and tachometer modes ...3-6
N Neutral indicator light .........................3-4
O Oil filter element ...............................6-10
Operation and important riding points ..............................................5-1
Owner’s tool kit...................................6-1
P Panels, removing and installing .........6-6
Parking ...............................................5-4
Pass switch ........................................3-9
Periodic maintenance and lubrication chart ..............................6-2
Periodic maintenance and minor repair...............................................6-1
Pre-operation check list......................4-2
Pre-operation checks .........................4-1
R Rear suspension, lubricating............6-27
Rear wheel .......................................6-38 Installing........................................6-39
Removing......................................6-38
Record the identification numbers .....9-1 S
Safety information ..............................1-1
Seat ..................................................3-14
Self-diagnosis devices .......................3-7
Shift pedal ........................................3-10
Shifting ...............................................5-2
Shock absorber assembly (adjusting) .....................................3-16
Sidestand .........................................3-17
Sidestand, checking and lubricating .....................................6-27
Sidestand switch, checking ..............3-18
Spark plug, checking..........................6-8
Specifications .....................................8-1
Spoke wheels ...................................6-19
Start switch ........................................3-9
Starting the engine.............................5-1
Steering, checking............................6-29
Steering lock ......................................3-2
Storage...............................................7-3
Supporting the motorcycle ...............6-36
Swingarm, lubricating the pivots ......6-28
T Tachometer ........................................3-6
Tail/brake light ..................................6-34
Throttle cable free play, checking.....6-16
Throttle grip and cable, checking and lubricating ..............................6-26
Tips for reducing fuel consumption ....5-3
Tires .................................................6-16 Air pressure ..................................6-16

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INDEX
Tire information .............................6-18
Tire inspection ..............................6-18
Tool kit ................................................6-1
Tripmeter and tachometer modes ......3-6
Troubleshooting ................................6-39 Troubleshooting charts .................6-40
Engine overheating .......................6-41
Turn signal indicator light ...................3-3
Turn signal light bulb, replacing........6-34
Turn signal switch...............................3-9
V Valve clearance ................................6-16
Vehicle identification number .............9-1
W Warning lights ....................................3-3
Wheel bearings, checking ................6-29
Wheels, spoke..................................6-19

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