2006 YAMAHA YZF-R6 check engine

PERIODIC MAINTENANCE AND MINOR REPAIR
6-42
6
EAU25911
Troubleshooting charts Starting problems or poor engine performance
WARNING
EWA10840
Keep away open flames and do not smoke while checking or working on the fuel system.
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plugs
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gaps, or replace the spark plugs.
Have a Yamaha dealer check the vehicle.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
The engine does not start.
Check the battery.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and charge the battery if necessary.
DryWet
Open the throttle halfway and operate
the electric starter.
U2C0E0E0.book Page 42 Friday, September 16, 2005 8:59 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-43
6Engine overheating
WARNING
EWA10400


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, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hissingsound 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 coolantas soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See NOTE.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
U2C0E0E0.book Page 43 Friday, September 16, 2005 8:59 AM

MOTORCYCLE CARE AND STORAGE
7-4
73. Perform the following steps to pro-
tect the cylinders, piston rings, etc.
from corrosion.
a. Remove the spark plug caps
and spark plugs.
b. Pour a teaspoonful of engine oil
into each spark plug bore.
c. Install the spark plug caps onto
the spark plugs, and then place
the spark plugs on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several
times with the starter. (This will
coat the cylinder walls with oil.)
e. Remove the spark plug caps
from the spark plugs, and then
install the spark plugs and the
spark plug caps.
WARNING
EWA10950
To prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turningthe 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. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
6. Cover the muffler outlet with a
plastic bag to prevent moisture
from entering it.
7. Remove the battery and fully
charge 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 beforestoring the motorcycle.
U2C0E0E0.book Page 4 Friday, September 16, 2005 8:59 AM

INDEXAAnti-theft alarm (optional)...................... 3-13
Auxiliary light bulb ................................. 6-36BBattery................................................... 6-31
Brake and clutch levers,
checking and lubricating ..................... 6-28
Brake and shift pedals,
checking and lubricating ..................... 6-27
Brake fluid, changing ............................ 6-24
Brake fluid level, checking .................... 6-23
Brake lever ............................................ 3-15
Brake pedal ........................................... 3-16CCables, checking and lubricating .......... 6-26
Care ........................................................ 7-1
Catalytic converter ................................ 3-18
Clutch lever ........................................... 3-15
Clutch lever free play, adjusting ............ 6-21
Coolant.................................................. 6-14
Coolant temperature warning light .......... 3-4
Cowlings and panels,
removing and installing ......................... 6-6DDimmer switch ...................................... 3-14
Drive chain, cleaning and lubricating .... 6-26
Drive chain slack ................................... 6-24EEngine break-in ....................................... 5-3
Engine oil and oil filter cartridge ............ 6-11
Engine stop switch ................................ 3-14
Engine trouble warning light.................... 3-7
EXUP system ........................................ 3-26
FFor solo riding ......................................... 9-2
Front and rear brake pads, checking .... 6-22
Front fork, adjusting .............................. 3-21
Front fork, checking .............................. 6-29
Fuel....................................................... 3-17
Fuel consumption, tips for reducing........ 5-3
Fuel level warning light ........................... 3-4
Fuel tank breather/overflow hose ......... 3-18
Fuel tank cap ........................................ 3-16
Fuses, replacing ................................... 6-32HHandlebar switches .............................. 3-13
Hazard switch ....................................... 3-14
Headlight bulb, replacing ...................... 6-33
Helmet holding cable ............................ 3-20
High beam indicator light ........................ 3-4
Horn switch ........................................... 3-14IIdentification numbers ............................ 9-1
Ignition circuit cut-off system ................ 3-27
Immobilizer system ................................. 3-1
Immobilizer system indicator light........... 3-7
Indicator and warning lights .................... 3-3KKey identification number ....................... 9-1LLicense plate light bulb, replacing ........ 6-35
Luggage strap holders .......................... 3-25MMain switch/steering lock........................ 3-2
Model label ............................................. 9-2
Multi-function meter unit ......................... 3-7
NNeutral indicator light .............................. 3-4OOil level warning light .............................. 3-4PParking .................................................... 5-4
Part locations .......................................... 2-1
Pass switch ........................................... 3-14
Periodic maintenance and lubrication
chart ...................................................... 6-2
Pre-operation check list........................... 4-2RRear brake light switch, adjusting ......... 6-22SSafety information ................................... 1-1
Seats ..................................................... 3-19
Shifting .................................................... 5-2
Shift pedal ............................................. 3-15
Shift timing indicator light ........................ 3-7
Shock absorber assembly, adjusting .... 3-23
Sidestand .............................................. 3-26
Sidestand, checking and lubricating...... 6-28
Spark plugs, checking ........................... 6-10
Specifications .......................................... 8-1
Starting the engine .................................. 5-1
Start switch............................................ 3-14
Steering, checking................................. 6-30
Storage.................................................... 7-3
Supporting the motorcycle .................... 6-36
Swingarm pivots, lubricating ................. 6-29TTail/brake light ....................................... 6-35
Throttle cable free play, checking ......... 6-18
U2C0E0E0.book Page 1 Friday, September 16, 2005 8:59 AM