2011 YAMAHA XVS950 check engine

PERIODIC MAINTENANCE AND ADJUSTMENT
6-13
6
EAU21384
Checking the throttle grip free
play The throttle grip free play should mea-
sure 4.0–6.0 mm (0.16–0.24 in) at the
inner edge of the throttle grip. Periodi-
cally check the throttle grip free play
and, if necessary, have a Yamaha deal-
er adjust it.
EAU21401
Valve clearance The valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
EAU21564
Tires To maximize the performance, durabil-
ity, and safe operation of your motorcy-
cle, note the following points regarding
the specified tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
WARNING
EWA10503
Operation of this vehicle with im-
proper tire pressure may cause se-
vere injury or death from loss of
control.

The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).


The tire air pressure must be ad-
justed in accordance with the
riding speed and with the total
weight of rider, passenger, car-
go, and accessories approved
for this model.
1. Throttle grip free play
1
U26PE2E0.book Page 13 Thursday, May 13, 2010 5:38 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-20
6 3. Note the position of the drive belt
with a force of 45 N (4.5 kgf, 10 lbf)
applied to the belt with a belt ten-
sion gauge as shown.
TIPA belt tension gauge is available at a
Yamaha dealer.4. Calculate the drive belt slack by
subtracting the measurement not-
ed in step 2 from the measurement
noted in step 3.
5. If the drive belt slack is incorrect,
have a Yamaha dealer adjust it.
EAU23093
Checking and lubricating the
cables The operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubricat-
ed if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the outer
housing of cables may result in in-
ternal rusting and cause interfer-
ence with cable movement. Replace
damaged cables as soon as possi-
ble to prevent unsafe conditions.[EWA10711]EAU49920
Checking and lubricating the
throttle grip and cable The operation of the throttle grip should
be checked before each ride. In addi-
tion, the cable should be lubricated by a
Yamaha dealer at the intervals speci-
fied in the periodic maintenance chart.
1. Belt tension gaugeDrive belt slack:
3.0–5.0 mm (0.12–0.20 in)1
Recommended lubricant:
Yamaha Chain and Cable Lube or
engine oil
U26PE2E0.book Page 20 Thursday, May 13, 2010 5:38 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-24
6
EAU23283
Checking the steering Worn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as fol-
lows at the intervals specified in the pe-
riodic maintenance and lubrication
chart.
1. Place a stand under the engine to
raise the front wheel off the
ground. (See page 6-31 for more
information.) WARNING! To
avoid injury, securely support
the vehicle so there is no danger
of it falling over.
[EWA10751]
2. Hold the lower ends of the front
fork legs and try to move them for-
ward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the steering.
EAU23291
Checking the wheel bearings The front and rear wheel bearings must
be checked at the intervals specified in
the periodic maintenance and lubrica-
tion chart. If there is play in the wheel
hub or if the wheel does not turn
smoothly, have a Yamaha dealer check
the wheel bearings.
EAU50210
Battery The battery is located under the rider
seat. (See page 3-14.)
This model is equipped with a VRLA
(Valve Regulated Lead Acid) battery.
There is no need to check the electro-
lyte or to add distilled water. However,
the battery lead connections need to be
checked and, if necessary, tightened.
WARNING
EWA10760


Electrolyte is poisonous and
dangerous since it contains sul-
furic acid, which causes severe
burns. Avoid any contact with
1. Positive battery lead (red)
2. Battery
3. Negative battery lead (black)
21
3
U26PE2E0.book Page 24 Thursday, May 13, 2010 5:38 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-31
6
EAU45222
Replacing an auxiliary light
bulb If the auxiliary light bulb burns out, re-
place it as follows.
1. Remove the headlight unit. (See
page 6-27.)
2. Remove the auxiliary light socket
(together with the bulb) by pulling it
out.
3. Remove the burnt-out bulb by pull-
ing it out.4. Insert a new bulb into the socket.
5. Install the auxiliary light socket (to-
gether with the bulb) by pushing it
in.
6. Install the headlight unit.
EAU24350
Supporting the motorcycle Since this model is not equipped with a
centerstand, follow these precautions
when removing the front and rear
wheel or performing other maintenance
requiring the motorcycle to stand up-
right. Check that the motorcycle is in a
stable and level position before starting
any maintenance. A strong wooden
box can be placed under the engine for
added stability.
To service the front wheel
1. Stabilize the rear of the motorcycle
by using a motorcycle stand or, if
an additional motorcycle stand is
not available, by placing a jack un-
der the frame in front of the rear
wheel.
2. Raise the front wheel off the
ground by using a motorcycle
stand.
To service the rear wheel
Raise the rear wheel off the ground by
using a motorcycle stand or, if a motor-
cycle stand is not available, by placing
1. Auxiliary light bulb socket
1
1. Auxiliary light bulb
1
U26PE2E0.book Page 31 Thursday, May 13, 2010 5:38 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-33
6
EAU42601
Troubleshooting chart
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.
U26PE2E0.book Page 33 Thursday, May 13, 2010 5:38 PM

MOTORCYCLE CARE AND STORAGE
7-4
72. 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.)
WARNING! To prevent dam-
age or injury from sparking,
make sure to ground the
spark plug electrodes while
turning the engine over.
[EWA10951]
e. Remove the spark plug caps
from the spark plugs, and then
install the spark plugs and the
spark plug caps.
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 outlet with a
plastic bag to prevent moisture
from entering it.
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
6-24.
TIPMake any necessary repairs before
storing the motorcycle.
U26PE2E0.book Page 4 Thursday, May 13, 2010 5:38 PM

INDEX
AAir filter element, replacing ................... 6-12
Auxiliary light bulb, replacing ................ 6-31BBattery .................................................. 6-24
Brake and clutch levers, checking and
lubricating ........................................... 6-21
Brake and shift pedals, checking and
lubricating ........................................... 6-21
Brake fluid, changing ............................ 6-19
Brake fluid level, checking .................... 6-18
Brake lever ........................................... 3-11
Brake lever free play, adjusting ............ 6-16
Brake light switches .............................. 6-17
Brake pedal .......................................... 3-11CCables, checking and lubricating .......... 6-20
Care ........................................................ 7-1
Catalytic converter ................................ 3-14
Clutch lever........................................... 3-10
Clutch lever free play, adjusting ........... 6-15DDimmer switch ........................................ 3-9
Drive belt slack ..................................... 6-19EEngine break-in ...................................... 5-3
Engine oil and oil filter cartridge ............. 6-9
Engine stop switch.................................. 3-9
Engine trouble warning light ................... 3-5FFront and rear brake pads, checking .... 6-17
Front fork, checking .............................. 6-23
Fuel....................................................... 3-12
Fuel consumption, tips for reducing........ 5-3Fuel level warning light............................ 3-4
Fuel tank breather/overflow hose .......... 3-13
Fuel tank cap......................................... 3-11
Fuses, replacing .................................... 6-26
HHandlebar switches ................................. 3-8
Hazard switch.......................................... 3-9
Headlight bulb, replacing....................... 6-27
Helmet holder ........................................ 3-15
High beam indicator light......................... 3-4
Horn switch ............................................. 3-9IIdentification numbers ............................. 9-1
Ignition circuit cut-off system ................. 3-18
Immobilizer system .................................3-1
Immobilizer system indicator light ........... 3-5
Indicator lights and warning lights ........... 3-4LLicense plate light bulb, replacing ......... 6-30MMain switch/steering lock ........................ 3-2
Maintenance and lubrication, periodic..... 6-4
Maintenance, emission control system ... 6-3
Matte color, caution .................................7-1
Model label .............................................. 9-1
Multi-function meter unit .......................... 3-5NNeutral indicator light .............................. 3-4OOil level warning light .............................. 3-4PPanel, removing and installing ................ 6-8
Parking ....................................................5-4
Part locations .......................................... 2-1Pass switch ............................................. 3-9
RRear suspension, lubricating ................ 6-23
RESET switch ....................................... 3-10
Rider seat ............................................. 3-14SSafety information ................................... 1-1
SELECT switch ....................................... 3-9
Shifting .................................................... 5-2
Shift pedal ............................................. 3-10
Shock absorber assembly, adjusting .... 3-16
Sidestand .............................................. 3-17
Sidestand, checking and lubricating ..... 6-22
Spark plugs, checking............................. 6-8
Specifications.......................................... 8-1
Starting the engine.................................. 5-1
Start switch ............................................. 3-9
Steering, checking ................................ 6-24
Storage ................................................... 7-3
Supporting the motorcycle .................... 6-31
Swingarm pivots, lubricating ................. 6-22TTail/brake light bulb, replacing .............. 6-28
Throttle grip and cable, checking and
lubricating ........................................... 6-20
Throttle grip free play, checking............ 6-13
Tires ...................................................... 6-13
Tool kit .................................................... 6-2
Troubleshooting .................................... 6-32
Troubleshooting chart ........................... 6-33
Turn signal indicator light ........................ 3-4
Turn signal light bulb, replacing ............ 6-29
Turn signal switch ................................... 3-9
U26PE2E0.book Page 1 Thursday, May 13, 2010 5:38 PM