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
6-18
6
EAU01800*
Inspecting the brake fluid levelInsufficient brake fluid may let air enter
the brake or clutch system, possibly
causing them to become ineffective.
Before riding, check that the brake fluid
is above the minimum level and fill
when necessary. Low brake fluid levels
may indicate worn brake pads and/or
fluid leakage. If the brake fluid level is
low, be sure to inspect the brake pads
for wear and the brake and clutch sys-
tems for leakage.NOTE:The rear master cylinder is located be-
hind panel A.
Observe these precautions:l
When checking the fluid level,
make sure the top of the master
cylinder is level by turning the han-
dlebars.
l
Use only the designated quality
brake fluid. Otherwise, the rubber
seals may deteriorate, causing
leakage and poor brake or clutch
performance.
l
Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor brake or clutch perfor-
mance.
l
Be careful that water does not en-
ter the master cylinder when refill-
ing. Water will significantly lower
the boiling point of the fluid and
may result in vapor lock.
l
Brake fluid may deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up spilled fluid
immediately.
l
Have a Yamaha dealer check the
cause if the brake fluid level goes
down.
1. Minimum level markFront
1. Minimum level markRecommended brake fluid: DOT 4Rear
1. Minimum level markClutch
PERIODIC MAINTENANCE AND MINOR REPAIR
6-19
6
EAU00742
Brake fluid replacementThe brake fluid should be replaced only
by trained Yamaha service personnel.
Have the Yamaha dealer replace the
following components during periodic
maintenance or when they are dam-
aged or leaking:l
oil seals (every two years)
l
brake hoses (every four years)
EAU00745
Drive chain slack checkNOTE:@ Spin the wheel several times and find
the tightest position of the chain. Check
and/or adjust the chain slack while it’s
in this tightest position. @Inspect the drive chain when the motor-
cycle is on the centerstand. Check the
slack at the position shown in the illus-
tration. Normal slack is approximately
20 ~ 30 mm. If the slack exceeds
30 mm, adjust.
EAU01251
Drive chain slack adjustment1. Loosen the axle nut.
2. Loosen the locknuts on each side.
To tighten the chain, turn the chain
adjusting bolts in direction
a.
To loosen the chain, turn the ad-
justing bolts in direction
b and
push the wheel forward. Turn each
adjusting bolt exactly the same
amount to maintain correct axle
alignment. There are marks on
each side of the swingarm. Use
these marks to align the rear
wheel.
a. Chain slack
1. Locknut
2. Adjusting bolt
3. Axle nut
4. Alignment marks
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
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