2008 YAMAHA FZ6 SHG spark plugs

TABLE OF CONTENTSSAFETY INFORMATION ..................1-1
DESCRIPTION ..................................2-1
Left view ..........................................2-1
Right view ........................................2-2
Controls and instruments.................2-3
INSTRUMENT AND CONTROL
FUNCTIONS.......................................3-1
Immobilizer system .........................3-1
Main switch/steering lock ................3-2
Indicator and warning lights ............3-4
Multi-function meter unit .................3-8
Anti-theft alarm (optional) .............3-12
Handlebar switches ......................3-13
Clutch lever ...................................3-14
Shift pedal .....................................3-14
Brake lever ...................................3-15
Brake pedal ..................................3-15
ABS (for ABS models) ..................3-15
Fuel tank cap ................................3-16
Fuel ...............................................3-17
Fuel tank breather hose ................3-18
Catalytic converters ......................3-18
Seat ..............................................3-18
Helmet holder ...............................3-19
Storage compartment ...................3-19
Adjusting the shock absorber
assembly ...................................3-20
Sidestand ......................................3-21
Ignition circuit cut-off system ........3-22PRE-OPERATION CHECKS............. 4-1
Pre-operation check list .................. 4-2
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
MINOR REPAIR................................. 6-1
Owner’s tool kit ............................... 6-1
Periodic maintenance and
lubrication chart .......................... 6-2
Removing and installing panels ..... 6-7
Checking the spark plugs ............... 6-9
Engine oil and oil filter cartridge ... 6-10
Coolant ......................................... 6-12
Replacing the air filter element ..... 6-16
Adjusting the engine idling
speed ........................................ 6-17
Checking the throttle cable free
play ........................................... 6-18
Valve clearance ............................ 6-18
Tires ............................................. 6-19
Cast wheels .................................. 6-21
Adjusting the clutch lever free
play ........................................... 6-22Rear brake light switch ................ 6-22
Checking the front and rear brake
pads .......................................... 6-23
Checking the brake fluid level ...... 6-23
Changing the brake fluid .............. 6-24
Drive chain slack .......................... 6-25
Cleaning and lubricating the drive
chain ......................................... 6-26
Checking and lubricating the
cables ....................................... 6-27
Checking and lubricating the
throttle grip and cable ............... 6-27
Checking and lubricating the
brake and shift pedals .............. 6-27
Checking and lubricating the
brake and clutch levers ............ 6-28
Checking and lubricating the
centerstand and sidestand ....... 6-29
Lubricating the swingarm
pivots ........................................ 6-29
Checking the front fork ................. 6-29
Checking the steering .................. 6-30
Checking the wheel bearings ....... 6-31
Battery ......................................... 6-31
Replacing the fuses ..................... 6-32
Replacing a headlight bulb .......... 6-34
Replacing the tail/brake light
bulb ........................................... 6-35
Replacing a turn signal light
bulb ........................................... 6-36U4S8E1E0.book Page 1 Monday, July 2, 2007 10:33 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-2
6
EAU1770A
Periodic maintenance and lubrication chart NOTE:

The annual checks must be performed every year, except if a kilometer-based maintenance, or for the UK, a
mileage-based maintenance, is performed instead.


From 50000 km (30000 mi), repeat the maintenance intervals starting from 10000 km (6000 mi).


Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technicalskills.
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)
1*Fuel lineCheck fuel hoses for cracks or
damage.√√√√√
2*Spark plugsCheck condition.
Clean and regap.√√
Replace.√√
3*ValvesCheck valve clearance.
Adjust.Every 40000 km (24000 mi)
4 Air filter elementReplace.√
5ClutchCheck operation.
Adjust.√√√√√
6*Front brakeCheck operation, fluid level and
vehicle for fluid leakage.√√√√√√
Replace brake pads. Whenever worn to the limit
7*Rear brakeCheck operation, fluid level and
vehicle for fluid leakage.√√√√√√
Replace brake pads. Whenever worn to the limit
U4S8E1E0.book Page 2 Monday, July 2, 2007 10:33 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
6
EAU19642
Checking the spark plugs The spark plugs are important engine
components, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode,
they should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plugs can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter electrode of each spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally),
and all spark plugs installed in the en-
gine should have the same color. If any
spark plug shows a distinctly different
color, the engine could be operating im-
properly. Do not attempt to diagnose
such problems yourself. Instead, have
a Yamaha dealer check the vehicle.
If a spark plug shows signs of electrode
erosion and excessive carbon or other
deposits, it should be replaced.Before installing a spark plug, the spark
plug gap should be measured with a
wire thickness gauge and, if necessary,
adjusted to specification.
Clean the surface of the spark plug
gasket and its mating surface, and then
wipe off any grime from the spark plug
threads.
NOTE:If 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 speci-fied torque as soon as possible.
Specified spark plug:
NGK/CR9EK
1. Spark plug gap
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Tightening torque:
Spark plug:
17.5 Nm (1.75 m·kgf, 12.7 ft·lbf)
U4S8E1E0.book Page 9 Monday, July 2, 2007 10:33 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-42
6
EAU42360
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
Operate the electric starter.
U4S8E1E0.book Page 42 Monday, July 2, 2007 10:33 AM

MOTORCYCLE CARE AND STORAGE
7-4
7 3. 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 outlets with plas-
tic bags to prevent moisture from
entering them.
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.
U4S8E1E0.book Page 4 Monday, July 2, 2007 10:33 AM

INDEX
AABS ...................................................... 3-15
ABS warning light (for ABS models) ....... 3-7
Air filter element, replacing ................... 6-16
Anti-theft alarm (optional) ..................... 3-12
Auxiliary light bulb, replacing ................ 6-37BBattery .................................................. 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 .......................................... 3-15CCables, checking and lubricating .......... 6-27
Care ........................................................ 7-1
Catalytic converters .............................. 3-18
Centerstand and sidestand, checking
and lubricating .................................... 6-29
Clutch lever........................................... 3-14
Clutch lever free play, adjusting ........... 6-22
Coolant ................................................. 6-12
Coolant temperature warning light.......... 3-4DDimmer switch ...................................... 3-13
Drive chain, cleaning and lubricating .... 6-26
Drive chain slack .................................. 6-25EEngine break-in ...................................... 5-3
Engine idling speed .............................. 6-17
Engine oil and oil filter cartridge ........... 6-10Engine stop switch ................................ 3-13
Engine trouble warning light .................... 3-7
FFront and rear brake pads, checking .... 6-23
Front fork, checking...............................6-29
Fuel ....................................................... 3-17
Fuel consumption, tips for reducing ........ 5-3
Fuel tank breather hose ........................ 3-18
Fuel tank cap......................................... 3-16
Fuses, replacing .................................... 6-32HHandlebar switches ............................... 3-13
Hazard switch........................................ 3-14
Headlight bulb, replacing....................... 6-34
Helmet holder ........................................ 3-19
High beam indicator light......................... 3-4
Horn switch ........................................... 3-13IIdentification numbers ............................. 9-1
Ignition circuit cut-off system ................. 3-22
Immobilizer system .................................3-1
Immobilizer system indicator light ........... 3-7
Indicator and warning lights .................... 3-4KKey identification number ........................ 9-1LLicense plate light bulb, replacing ......... 6-36MMain switch/steering lock ........................ 3-2
Matte color, caution .................................7-1
Model label .............................................. 9-2
Multi-function meter unit .......................... 3-8NNeutral indicator light .............................. 3-4
OOil level warning light .............................. 3-4PPanels, removing and installing .............. 6-7
Parking.................................................... 5-4
Part locations .......................................... 2-1
Pass switch ........................................... 3-13
Periodic maintenance and lubrication
chart...................................................... 6-2
Pre-operation check list .......................... 4-2RRear brake light switch ......................... 6-22SSafety information ................................... 1-1
Seat ...................................................... 3-18
Shifting .................................................... 5-2
Shift pedal ............................................. 3-14
Shock absorber assembly, adjusting .... 3-20
Sidestand .............................................. 3-21
Spark plugs, checking............................. 6-9
Specifications.......................................... 8-1
Starting the engine.................................. 5-1
Start switch ........................................... 3-13
Steering, checking ................................ 6-30
Storage ................................................... 7-3
Storage compartment ........................... 3-19
Swingarm pivots, lubricating ................. 6-29TTail/brake light bulb, replacing .............. 6-35
Throttle cable free play, checking ......... 6-18
Throttle grip and cable, checking and
lubricating ........................................... 6-27
Tires ...................................................... 6-19
Tool kit .................................................... 6-1
U4S8E1E0.book Page 1 Monday, July 2, 2007 10:33 AM