2001 YAMAHA YZF-R6 spark plugs

6
PERIODIC MAINTENANCE AND MINOR REPAIR
Owner’s tool kit .................................................... 6-1
Periodic maintenance and lubrication chart ......... 6-3
Removing and installing cowlings and panels ..... 6-6
Cowlings A and B ................................................. 6-6
Checking the spark plugs .................................... 6-9
Engine oil and oil filter cartridge ........................ 6-10
Coolant .............................................................. 6-13
Checking the air filter element ........................... 6-17
Air intake duct .................................................... 6-20
Adjusting the carburetors ................................... 6-20
Adjusting the engine idling speed ...................... 6-21
Adjusting the throttle cable free play .................. 6-21
Adjusting the valve clearance ............................ 6-22
Tires ................................................................... 6-22
Wheels ............................................................... 6-25
Adjusting the clutch lever free play .................... 6-25
Adjusting the brake pedal position ..................... 6-27
Adjusting the rear brake light switch .................. 6-27
Checking the front and rear brake pads ............. 6-28
Checking the brake fluid level ............................ 6-29
Changing the brake fluid .................................... 6-30
Drive chain slack ................................................ 6-31Lubricating the drive chain ................................ 6-32
Checking and lubricating the cables ................. 6-33
Checking and lubricating the throttle
grip and cable ................................................. 6-33
Lubricating the brake pedal ............................... 6-34
Checking and lubricating the brake and
clutch levers .................................................... 6-34
Checking and lubricating the sidestand ............ 6-34
Lubricating the rear suspension ........................ 6-35
Checking the front fork ...................................... 6-35
Checking the steering ....................................... 6-36
Checking the wheel bearings ............................ 6-36
Battery ............................................................... 6-37
Replacing the fuses .......................................... 6-38
Replacing the headlight bulb ............................. 6-39
Tail/brake light ................................................... 6-40
Replacing a turn signal light bulb ...................... 6-40
Supporting the motorcycle ................................ 6-41
Front wheel ....................................................... 6-41
Rear wheel ........................................................ 6-43
Troubleshooting ................................................. 6-44
Troubleshooting charts ...................................... 6-45
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
6
EAU03685
Periodic maintenance and lubrication chart
NOTE:_ l
The annual checks must be performed every year, except if a kilometer-based maintenance is performed instead.
l
From 50,000 km, repeat the maintenance intervals starting from 10,000 km.
l
Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and techni-
cal skills.
_
CP-03ENO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (´1,000 km)
ANNUAL
CHECK
1 10203040
1
*Fuel line• Check fuel hoses for cracks or damage.ÖÖÖÖ Ö
2*Fuel filter• Check condition.ÖÖ
3 Spark plugs• Check condition.
• Clean and regap.ÖÖ
•Replace.ÖÖ
4*Valves• Check valve clearance.
• Adjust.Every 40,000 km
5 Air filter element• Clean.ÖÖ
•Replace.ÖÖ
6Clutch• Check operation.
• Adjust.ÖÖÖÖÖ
7*Front brake• Check operation, fluid level and vehicle for fluid leakage.
(See NOTE on page 6-5.)ÖÖÖÖÖ Ö
• Replace brake pads. Whenever worn to the limit
8*Rear brake• Check operation, fluid level and vehicle for fluid leakage.
(See NOTE on page 6-5.)ÖÖÖÖÖ Ö
• Replace brake pads. Whenever worn to the limit
E_5mt_Periodic.fm Page 3 Tuesday, December 12, 2000 5:49 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
6
EAU01639
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 col-
or when the motorcycle is ridden nor-
mally), and all spark plugs installed in
the engine should have the same color.
If any spark plug shows a distinctly dif-
ferent color, the engine could be defec-
tive. Do not attempt to diagnose such
problems yourself. Instead, have a
Yamaha dealer check the motorcycle.
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. @
a. Spark plug gap
Specified spark plug:
CR10EK (NGK)
Spark plug gap:
0.6–0.7 mm
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kg)
E_5mt.book Page 9 Monday, September 18, 2000 9:08 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-45
6
EAU02990
Troubleshooting charts Starting problems or poor engine performance
EW000125
WARNING
@ 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.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.DryWet
The engine does not start.
Check the battery.Open the throttle halfway and operate
the electric starter.
The battery is good.Check the battery lead connections,
and charge the battery if necessary.
E_5mt.book Page 45 Monday, September 18, 2000 9:08 AM

MOTORCYCLE CARE AND STORAGE
7-4
7
Storage Short-term
Always store your motorcycle in a cool,
dry place and, if necessary, protect it
against dust with a porous cover.
ECA00014
CAUTION:@ l
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.
l
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
several months:
1. Follow all the instructions in the
“Care” section of this chapter.
2. For motorcycles equipped with a
fuel cock that has an “OFF” posi-
tion: Turn the fuel cock lever to
“OFF”.
3. Drain the carburetor float chamber
by loosening the drain bolt; this will
prevent fuel deposits from building
up. Pour the drained fuel into the
fuel tank.
4. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
5. Perform the following steps to pro-
tect the cylinder, 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 ground-
ed. (This will limit sparking 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.
EWA00003
WARNING
@ To prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turning
the engine over. @
E_5mt.book Page 4 Monday, September 18, 2000 9:08 AM

10-INDEXAAir filter element, checking ..................... 6-17
Air intake duct ........................................ 6-20
Anti-theft alarm ...................................... 3-10BBattery ................................................... 6-37
Brake and clutch levers, checking and
lubricating ............................................ 6-34
Brake fluid, changing ............................. 6-30
Brake fluid level, checking...................... 6-29
Brake lever...............................................3-9
Brake light switch (rear), adjusting ......... 6-27
Brake pads, checking............................. 6-28
Brake pedal............................................ 3-10
Brake pedal, lubricating.......................... 6-34
Brake pedal position, adjusting .............. 6-27CCables, checking and lubricating............ 6-33
Carburetors, adjusting............................ 6-20
Care.........................................................7-1
Clutch lever ..............................................3-9
Clutch lever free play, adjusting ............. 6-25
Conversion table ......................................8-5
Coolant .................................................. 6-13
Changing .......................................... 6-15
Checking .......................................... 6-13
Cowlings and panels, removing and
installing ................................................6-6DDimmer switch .........................................3-7
Drive chain, lubricating ........................... 6-32
Drive chain slack ................................... 6-31
Adjusting .......................................... 6-31
Checking .......................................... 6-31EEngine break-in ....................................... 5-4
Engine oil and oil filter cartridge ............. 6-10
Engine stop switch................................... 3-8FFront and rear suspension settings ........ 3-21
Front fork, adjusting ............................... 3-17
Front fork, checking ............................... 6-35
Fuel ....................................................... 3-11
Fuel consumption, tips for reducing ......... 5-3
Fuel level warning light ............................ 3-2
Fuel tank breather hose ......................... 3-12
Fuel tank cap ......................................... 3-11
Fuses, replacing .................................... 6-38HHandlebar switches ................................. 3-7
Headlight bulb, replacing ....................... 6-39
Helmet holder ........................................ 3-15
High beam indicator light ......................... 3-2
Horn switch ............................................. 3-8IIdentification numbers ............................. 9-1
Idling speed, adjusting ........................... 6-21
Ignition circuit cut-off system.................. 3-23
Indicator and warning lights ..................... 3-2KKey identification number ........................ 9-1
LLight switch ..............................................3-8
Luggage strap holders ...........................3-22MMain switch/steering lock .........................3-1
Model label ..............................................9-2NNeutral indicator light ...............................3-2OOil level/coolant temperature warning
light ........................................................3-3PParking.....................................................5-4
Part locations ...........................................2-1
Pass switch ..............................................3-7
Periodic maintenance and lubrication
chart ......................................................6-3
Pre-operation check list ............................4-1SSafety information ....................................1-1
Seats .....................................................3-13
Passenger seat.................................3-14
Rider seat .........................................3-13
Self-diagnosis device ...............................3-7
Shifting .....................................................5-3
Shift pedal ................................................3-9
Shock absorber assembly, adjusting ......3-19
Sidestand ...............................................3-22
Sidestand, checking and lubricating .......6-34
Spark plugs, checking ..............................6-9
E_5mt.book Page 1 Monday, September 18, 2000 9:08 AM