PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
6Installation
1. Measure the electrode gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
2. Clean the gasket surface. Wipe off
any grime from the threads.
3. Install the spark plug and tighten it
to the specified torque.
NOTE:@ If a torque wrench is not available when
you are installing a spark plug, a good
estimate of the correct torque is 1/4 to
1/2 turn past finger tight. Have the
spark plug tightened to the specified
torque as soon as possible. @4. Install the spark plug caps.
EAU01784*
Engine oilOil level inspection
1. Place the motorcycle on the cen-
terstand. Warm up the engine for
several minutes.NOTE:@ Be sure the motorcycle is positioned
straight up when checking the oil level.
A slight tilt toward the side can result in
false readings. @
a. Spark plug gapSpark plug gap:
0.8 ~ 0.9 mm
Tightening torque:
Spark plug:
17.5 Nm (1.75 m·kg)
PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
6 2. With the engine stopped, check
the oil level through the level win-
dow located at the lower part of
the right side crankcase cover.
NOTE:@ Wait a few minutes until the oil level
settles before checking. @3. The oil level should be between
the maximum and minimum level
marks. If the level is low, add suffi-
cient oil to raise it to the specified
level.Engine oil and oil filter element re-
placement
1. Warm up the engine for several
minutes.
2. Stop the engine. Place an oil pan
under the engine and remove the
oil filler cap.
3. Remove the drain bolt and drain
the oil.4. Remove the oil filter drain screw,
filter cover bolt, filter cover, oil filter
element and O-ring.
5. Reinstall the drain bolt and tighten
it to the specified torque.1. Oil level window
2. Maximum level mark
3. Minimum level mark
1. Engine oil drain bolt
1. Oil filter drain screw
2. Oil filter cover boltTightening torque:
Drain bolt:
43 Nm (4.3 m·kg)
PERIODIC MAINTENANCE AND MINOR REPAIR
6-10
6 10. Start the engine and warm it up for
several minutes. While warming
up, check for oil leakage. If oil
leakage is found, stop the engine
immediately and check for the
cause.
NOTE:@ After the engine is started, the oil level
indicator light should go off if oil is filled
to the specified level. @
EC000067
CAUTION:@ If the indicator light flickers or re-
mains on, immediately stop the en-
gine and consult with a Yamaha
dealer. @
EAU01755
Air filterThe air filter should be cleaned at the
specified intervals. It should be cleaned
more frequently if you are riding in un-
usually wet or dusty areas.
1. Remove the seat. (See page 3-11
for seat removal and installation
procedures.)
2. Remove panel A. (See page 6-5
for panel removal and installation
procedures.)
3. Remove the air filter case cover by
lifting up the wires as shown and
removing the screws.4. Pull out the air filter.1. Air filter case cover
2. Screw (´ 4)
1. Air filter
PERIODIC MAINTENANCE AND MINOR REPAIR
6-22
6
EAU02965
Center and sidestand
lubricationLubricate the pivoting and mating
joints. Check to see that the center and
sidestand move up and down smooth-
ly.
EW000114
WARNING
@ If the center and/or sidestand does
not move smoothly, consult a
Yamaha dealer. @
EAU02939
Front fork inspectionVisual check
EW000115
WARNING
@ Securely support the motorcycle so
there is no danger of it falling over. @Check for scratches or damage on the
inner tube and excessive oil leakage
from the front fork.
Operation check
1. Place the motorcycle on a level
place.
2. Hold the motorcycle in an upright
position and apply the front brake.
3. Push down hard on the handle-
bars several times and check if the
fork rebounds smoothly.
EC000098
CAUTION:@ If any damage or unsmooth move-
ment is found with the front fork,
consult a Yamaha dealer. @
Recommended lubricant:
Engine oil
PERIODIC MAINTENANCE AND MINOR REPAIR
6-23
6
EAU00794
Steering inspectionPeriodically inspect the condition of the
steering. Worn out or loose steering
bearings may be dangerous. Place a
stand under the engine to raise the
front wheel off the ground. Hold the
lower end of the front forks and try to
move them forward and backward. If
any free play can be felt, ask a Yamaha
dealer to inspect and adjust the steer-
ing. Inspection is easier if the front
wheel is removed.
EW000115
WARNING
@ Securely support the motorcycle so
there is no danger of it falling over. @
EAU01144
Wheel bearingsIf there is play in the front or rear wheel
hub or if the wheel does not turn
smoothly, have a Yamaha dealer in-
spect the wheel bearings.
EAU01271
BatteryThis motorcycle is equipped with a
sealed-type battery. Therefore it is not
necessary to check the electrolyte or fill
the battery with distilled water.l
If the battery seems to have dis-
charged, consult a Yamaha deal-
er.
l
If the motorcycle is equipped with
optional electrical accessories, the
battery tends to discharge more
quickly, so be sure to recharge it
periodically.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-32
6
EAU01297
Troubleshooting chart
EW000125
WARNING
@ Never check the fuel system while smoking or in the vicinity of an open flame. @
Check if there is fuel
in the fuel tank.1. Fuel
Enough fuel.
No fuel.
Go to compression check.
Supply fuel.
Use the electric starter.2. Compression
There is compression.
No compression.
Go to ignition check.
Ask a Yamaha dealer to
inspect.
Remove spark
plugs and
check electrodes.3. Ignition
Wet.
Dry.
Wipe clean with dry cloth and correct
spark gap or replace spark plugs.
Ask a Yamaha dealer to inspect.
Engine doesn’t start, go to battery
check.Open throttle half-way and start
the engine.
Use the electric starter.4. Battery
Engine turns over
quickly.
Engine turns over
slowly.
Battery good.Check connections or
recharge.
Engine doesn’t start, ask a Yamaha
dealer to inspect.
Engine doesn’t start, go to compression check.
MOTORCYCLE CARE AND STORAGE
7-5
7a. 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 place the spark
plugs 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 walls with oil.)
e. Remove the spark plug caps from
the spark plugs, install the spark
plugs and then the spark plug
caps.
EWA00003
WARNING
@ When turning the engine over, be
sure to ground the spark plug elec-
trodes to prevent damage or injury
from sparking. @
6. Lubricate all control cables and
the pivoting points of all levers and
pedals as well as of the sidestand/
centerstand.
7. Check and, if necessary, correct
the tire air pressure, then raise 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.
8. Cover up the muffler outlets with
plastic bags to prevent moisture
from entering.9. Remove the battery and fully
charge it. Store it in a cool, dry
place and recharge it once a
month. Do not store the battery in
an excessively cold or warm place
(less than 0 °C or more than
30 °C). For more information, see
“Battery storage” in the chapter
“PERIODIC MAINTENANCE AND
MINOR REPAIRS”.
NOTE:@ Make any necessary repairs before
storing the motorcycle. @
10-INDEXAAir filter .................................................. 6-10
Antitheft alarm (optional) ..........................3-4BBattery ................................................... 6-23
Brake and clutch lever lubrication........... 6-21
Brake and shift pedal lubrication ............ 6-21
Brake fluid replacement ......................... 6-19
Brake light switch adjustment ................. 6-17CCable inspection and lubrication ............ 6-20
Carburetor adjustment ........................... 6-11
Care.........................................................7-1
Center and sidestand lubrication ............ 6-22
Checking the front and
rear brake pads ................................... 6-17
Clutch lever ..............................................3-7
Controls/Instruments ................................2-3DDimmer switch .........................................3-5
Drive chain lubrication ............................ 6-20
Drive chain slack adjustment.................. 6-19
Drive chain slack check.......................... 6-19EEngine break-in........................................5-5
Engine oil .................................................6-7
Engine stop switch ...................................3-6FFront brake lever ......................................3-8
Front fork adjustment ............................. 3-13
Front fork inspection .............................. 6-22
Front wheel installation .......................... 6-29
Front wheel removal .............................. 6-28
Fuel ......................................................... 3-9
Fuel cock ............................................... 3-10
Fuel gauge .............................................. 3-5
Fuel tank cap ........................................... 3-9
Fuse replacement.................................. 6-25GGive safety the right of way ..................... 1-1HHandlebar switches ................................. 3-5
Dimmer switch ................................... 3-5
Engine stop switch ............................. 3-6
Horn switch ........................................ 3-5
Lights switch ...................................... 3-6
Pass switch ........................................ 3-5
Start switch ........................................ 3-6
Turn signal switch .............................. 3-5
Headlight bulb replacement ................... 6-25
Helmet holder ........................................ 3-12
High beam indicator light ......................... 3-2
Horn switch ............................................. 3-5IIdentification number records................... 9-1
Idle speed adjustment ........................... 6-11
Indicator lights ......................................... 3-2
High beam indicator light .................... 3-2
Neutral indicator light.......................... 3-2
Oil level indicator light ........................ 3-2
Turn indicator lights ............................ 3-2
Inspecting the brake fluid level............... 6-18
KKey identification number .........................9-1LLeft view...................................................2-1
Lights switch ............................................3-6
Luggage strap holders ...........................3-15MMain switch/Steering lock .........................3-1
Model label ..............................................9-2NNeutral indicator light ...............................3-2OOil level indicator circuit check .................3-3
Oil level indicator light ..............................3-2PPanel A ....................................................6-5
Panel removal and installation..................6-5
Parking.....................................................5-6
Pass switch ..............................................3-5
Periodic maintenance and lubrication .......6-2
Pre-operation check list ............................4-1RRear brake pedal .....................................3-8
Rear brake pedal height adjustment.......6-16
Rear shock absorber adjustment............3-13
Rear wheel installation ...........................6-31
Rear wheel removal ...............................6-30
Recommended shift points
(for Switzerland only) .............................5-5
Right view ................................................2-2