2004 YAMAHA FZ6 N 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 ............3-3
LCD tachometer .............................3-5
Multi-function display ......................3-6
Anti-theft alarm (optional) ...............3-8
Handlebar switches ........................3-9
Clutch lever ...................................3-10
Shift pedal .....................................3-10
Brake lever ...................................3-11
Brake pedal ..................................3-11
Fuel tank cap ................................3-11
Fuel ...............................................3-12
Fuel tank breather hose ................3-13
Catalytic converter ........................3-13
Seat ..............................................3-14
Storage compartment ...................3-14
Adjusting the shock absorber
assembly ...................................3-15
Sidestand ......................................3-16
Ignition circuit cut-off system ........3-17PRE-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 the
panel ........................................... 6-5
Checking the spark plugs ............... 6-5
Engine oil and oil filter cartridge ..... 6-6
Coolant ........................................... 6-9
Replacing the air filter element ..... 6-11
Adjusting the engine idling
speed ........................................ 6-12
Adjusting the throttle cable
free play .................................... 6-13
Adjusting the valve clearance ...... 6-13
Tires ............................................. 6-13
Cast wheels .................................. 6-16Adjusting the clutch lever
free play .................................... 6-16
Adjusting the rear brake light
switch ....................................... 6-17
Checking the front and rear
brake pads ................................ 6-17
Checking the brake fluid level ...... 6-18
Changing the brake fluid .............. 6-19
Drive chain slack .......................... 6-19
Lubricating the drive chain ........... 6-21
Checking and lubricating the
cables ....................................... 6-21
Checking and lubricating the
throttle grip and cable ............... 6-22
Checking and lubricating the
brake and shift pedals .............. 6-22
Checking and lubricating the
brake and clutch levers ............ 6-23
Checking and lubricating the
sidestand .................................. 6-23
Checking the front fork ................. 6-24
Checking the steering .................. 6-24
Checking the wheel bearings ....... 6-25
Battery ......................................... 6-25
Replacing the fuses ..................... 6-27
Replacing the headlight bulb ....... 6-28
Replacing the tail/brake
light bulb ................................... 6-29
Replacing a turn signal
light bulb ................................... 6-30U1B3E0E0.book Page 1 Monday, February 9, 2004 2:27 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-2
6
EAU17704
Periodic maintenance and lubrication chart NOTE:

The annual checks must be performed every year, except if a kilometer-based maintenance is performed in-
stead.


From 50000 km, repeat the maintenance intervals starting from 10000 km.


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 (× 1000 km)
ANNUAL
CHECK
1 10203040
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
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
8*Brake hosesCheck for cracks or damage.√√√√ √
Replace. Every 4 years
9*WheelsCheck runout and for damage.√√√√
U1B3E0E0.book Page 2 Monday, February 9, 2004 2:27 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-5
6
EAU18751
Removing and installing the
panel The panel shown needs to be removed
to perform some of the maintenance
jobs described in this chapter. Refer to
this section each time the panel needs
to be removed and installed.
EAU33020
Panel A
To remove the panel1. Remove the seat. (See page
3-14.)
2. Remove the bolt, and then pull the
panel off as shown.To install the panel
1. Place the panel in the original posi-
tion, and then install the bolt.
2. Install the seat.
EAU19651
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 defective. Do
not attempt to diagnose such problems
yourself. Instead, have a Yamaha deal-
er check the vehicle.
If a spark plug shows signs of electrode
erosion and excessive carbon or other
deposits, it should be replaced.
1. Panel A
1. Panel A
2. Bolt
Specified spark plug:
NGK/CR9EK
U1B3E0E0.book Page 5 Monday, February 9, 2004 2:27 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-36
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.
U1B3E0E0.book Page 36 Monday, February 9, 2004 2:27 PM

MOTORCYCLE CARE AND STORAGE
7-3
7
CAUTION:
ECA10800


Apply spray oil and wax spar-
ingly and make sure to wipe off
any excess.


Never apply oil or wax to any
rubber and plastic parts, but
treat them with a suitable care
product.


Avoid using abrasive polishing
compounds as they will wearaway the paint.
NOTE:Consult a Yamaha dealer for advice onwhat products to use.
EAU26201
Storage Short-term
Always store your motorcycle in a cool,
dry place and, if necessary, protect it
against dust with a porous cover.CAUTION:
ECA10810


Storing the motorcycle in a
poorly ventilated room or cover-
ing it with a tarp, while it is still
wet, will allow water and humid-
ity to seep in and cause rust.


To prevent corrosion, avoid
damp cellars, stables (because
of the presence of ammonia)
and areas where strong chemi-cals are stored.
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 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.
U1B3E0E0.book Page 3 Monday, February 9, 2004 2:27 PM

INDEXAAir filter element, replacing ................... 6-11
Anti-theft alarm (optional)........................ 3-8
Auxiliary light bulb, replacing ................ 6-31BBattery................................................... 6-25
Brake and clutch levers, checking
and lubricating .................................... 6-23
Brake and shift pedals, checking
and lubricating .................................... 6-22
Brake fluid, changing ............................ 6-19
Brake fluid level, checking .................... 6-18
Brake lever ............................................ 3-11
Brake pedal ........................................... 3-11CCables, checking and lubricating .......... 6-21
Care ........................................................ 7-1
Catalytic converter ................................ 3-13
Clutch lever ........................................... 3-10
Clutch lever free play, adjusting ............ 6-16
Coolant.................................................... 6-9DDimmer switch ........................................ 3-9
Drive chain, lubricating.......................... 6-21
Drive chain slack ................................... 6-19EEngine break-in ....................................... 5-3
Engine idling speed............................... 6-12
Engine oil and oil filter cartridge .............. 6-6
Engine stop switch .................................. 3-9
Engine trouble warning light.................... 3-4FFront and rear brake pads, checking .... 6-17
Front fork, checking .............................. 6-24Fuel....................................................... 3-12
Fuel consumption, tips for reducing........ 5-3
Fuel tank breather hose........................ 3-13
Fuel tank cap ........................................ 3-11
Fuses, replacing ................................... 6-27
HHandlebar switches ................................ 3-9
Hazard switch ....................................... 3-10
Headlight bulb, replacing ...................... 6-28
High beam indicator light ........................ 3-4
Horn switch ............................................. 3-9IIdentification numbers ............................ 9-1
Ignition circuit cut-off system ................ 3-17
Immobilizer system ................................. 3-1
Immobilizer system indicator light........... 3-4
Indicator and warning lights .................... 3-3KKey identification number ....................... 9-1LLCD tachometer ..................................... 3-5
License plate light bulb, replacing ........ 6-30MMain switch/steering lock........................ 3-2
Model label ............................................. 9-2
Multi-function display .............................. 3-6NNeutral indicator light .............................. 3-3OOil level warning light.............................. 3-4PPanel, removing and installing................ 6-5
Parking ................................................... 5-4
Part locations .......................................... 2-1Pass switch ............................................. 3-9
Periodic maintenance and lubrication
chart ...................................................... 6-2
Pre-operation check list........................... 4-2
RRear brake light switch, adjusting ......... 6-17SSafety information ................................... 1-1
Seat ....................................................... 3-14
Shifting .................................................... 5-2
Shift pedal ............................................. 3-10
Shock absorber assembly, adjusting .... 3-15
Sidestand .............................................. 3-16
Sidestand, checking and lubricating...... 6-23
Spark plugs, checking ............................. 6-5
Specifications .......................................... 8-1
Starting the engine .................................. 5-1
Start switch.............................................. 3-9
Steering, checking................................. 6-24
Storage.................................................... 7-3
Storage compartment............................ 3-14
Supporting the motorcycle .................... 6-31TTail/brake light bulb, replacing .............. 6-29
Throttle cable free play, adjusting ......... 6-13
Throttle grip and cable, checking
and lubricating .................................... 6-22
Tires ...................................................... 6-13
Tool kit..................................................... 6-1
Troubleshooting .................................... 6-35
Troubleshooting charts.......................... 6-36
Turn signal indicator lights ...................... 3-3
Turn signal light bulb, replacing ............ 6-30
Turn signal switch ................................... 3-9
U1B3E0E0.book Page 1 Monday, February 9, 2004 2:27 PM