2004 YAMAHA XVS650A 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
Speedometer unit ...........................3-5
Anti-theft alarm (optional) ...............3-5
Handlebar switches ........................3-5
Clutch lever .....................................3-7
Shift pedal .......................................3-7
Brake lever .....................................3-7
Brake pedal ....................................3-8
Fuel tank cap ..................................3-8
Fuel .................................................3-9
Catalytic converter ........................3-10
Fuel cock ......................................3-10
Starter (choke) knob ......................3-11
Seats ............................................3-11
Helmet holder ...............................3-12
Storage compartment ...................3-13
Adjusting the shock absorber
assembly ...................................3-13
Luggage strap holders ..................3-14
Sidestand ......................................3-15Ignition circuit cut-off system ........ 3-15
PRE-OPERATION CHECKS............. 4-1
Pre-operation check list .................. 4-2
OPERATION AND IMPORTANT
RIDING POINTS................................. 5-1
Starting a cold engine .................... 5-1
Starting a warm engine .................. 5-2
Shifting ........................................... 5-2
Tips for reducing fuel
consumption ............................... 5-3
Engine break-in .............................. 5-4
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 panels ..... 6-5
Checking the spark plugs ............... 6-6
Engine oil and oil filter element ...... 6-7
Final gear oil ................................. 6-10
Cleaning the air filter element ...... 6-11
Adjusting the carburetors ............. 6-12
Adjusting the engine idling
speed ........................................ 6-12
Adjusting the throttle cable free
play ........................................... 6-13
Adjusting the valve clearance ...... 6-13Tires ............................................. 6-14
Spoke wheels .............................. 6-16
Adjusting the clutch lever free
play ........................................... 6-16
Adjusting the brake lever free
play ........................................... 6-17
Adjusting the brake pedal position
and free play ............................. 6-18
Adjusting the rear brake light
switch ....................................... 6-19
Checking the front brake pads
and rear brake shoes ............... 6-19
Checking the brake fluid level ...... 6-20
Changing the brake fluid .............. 6-21
Checking and lubricating the
cables ....................................... 6-21
Checking and lubricating the
throttle grip and cable ............... 6-21
Checking and lubricating the
brake and shift pedals .............. 6-22
Checking and lubricating the
brake and clutch levers ............ 6-22
Checking and lubricating the
sidestand .................................. 6-23
Checking the front fork ................. 6-23
Checking the steering .................. 6-24
Checking the wheel bearings ....... 6-25
Battery ......................................... 6-25
Replacing the fuses ..................... 6-26
Replacing the headlight bulb ....... 6-27U5SCE1E0.book Page 1 Monday, September 8, 2003 11:32 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-2
6
EAU17702
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*Fuel filterCheck condition.√√
3 Spark plugsCheck condition.
Clean and regap.√√
Replace.√√
4*ValvesCheck valve clearance.
Adjust.√√√√
5 Air filter elementClean.√√
Replace.√√
6ClutchCheck operation.
Adjust.√√√√√
7*Front brakeCheck operation, fluid level and vehicle for fluid leakage.√√√√√ √
Replace brake pads. Whenever worn to the limit
8*Rear brakeCheck operation and adjust brake pedal free play.√√√√√ √
Replace brake shoes. Whenever worn to the limit
U5SCE1E0.book Page 2 Monday, September 8, 2003 11:32 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-6
6
EAU19543
Checking the spark plugs The spark plugs are important engine
components, which are easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plugs 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.
To remove a spark plug
1. Remove the spark plug cap.
2. Remove the spark plug as shown,
with the spark plug wrench includ-
ed in the owner’s tool kit.To check the spark plugs
1. Check that the porcelain insulator
around the center electrode on
each spark plug is a medium-to-
light tan (the ideal color when the
vehicle is ridden normally).
2. Check that all spark plugs installed
in the engine have the same color.
NOTE: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 aYamaha dealer check the vehicle.
1. Spark plug cap
1. Spark plug wrench
U5SCE1E0.book Page 6 Monday, September 8, 2003 11:32 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-35
6
EAU25891
Troubleshooting chart
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.
U5SCE1E0.book Page 35 Monday, September 8, 2003 11:32 AM

MOTORCYCLE CARE AND STORAGE
7-3
7


Avoid using abrasive polishing
compounds as they will wearaway the paint.
NOTE:Consult a Yamaha dealer for advice onwhat products to use.
EAU26230
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. 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 cham-
bers by loosening the drain bolts;
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 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.
U5SCE1E0.book Page 3 Monday, September 8, 2003 11:32 AM

INDEXAAir filter element, cleaning..................... 6-11
Anti-theft alarm (optional)........................ 3-5
Auxiliary light bulb, replacing ................ 6-29BBattery................................................... 6-25
Brake and clutch levers, checking and
lubricating ........................................... 6-22
Brake and shift pedals, checking and
lubricating ........................................... 6-22
Brake fluid, changing ............................ 6-21
Brake fluid level, checking .................... 6-20
Brake lever .............................................. 3-7
Brake lever free play, adjusting............. 6-17
Brake pads and shoes, checking .......... 6-19
Brake pedal ............................................. 3-8
Brake pedal position and free play,
adjusting ............................................. 6-18CCables, checking and lubricating .......... 6-21
Carburetors, adjusting........................... 6-12
Care ........................................................ 7-1
Catalytic converter ................................ 3-10
Clutch lever ............................................. 3-7
Clutch lever free play, adjusting ............ 6-16DDimmer switch ........................................ 3-6EEngine break-in ....................................... 5-4
Engine idling speed............................... 6-12
Engine oil and oil filter element ............... 6-7
Engine, starting a warm .......................... 5-2
Engine stop switch .................................. 3-6
Engine trouble warning light.................... 3-4
FFinal gear oil ......................................... 6-10
Front fork, checking .............................. 6-23
Fuel......................................................... 3-9
Fuel cock .............................................. 3-10
Fuel consumption, tips for reducing........ 5-3
Fuel tank cap .......................................... 3-8
Fuses, replacing ................................... 6-26HHandlebar switches ................................ 3-5
Hazard switch ......................................... 3-6
Headlight bulb, replacing ...................... 6-27
Helmet holder ....................................... 3-12
High beam indicator light ........................ 3-4
Horn switch ............................................. 3-6IIdentification numbers ............................ 9-1
Ignition circuit cut-off system ................ 3-15
Immobilizer system ................................. 3-1
Immobilizer system indicator light........... 3-4
Indicator and warning lights .................... 3-3KKey identification number ....................... 9-1LLuggage strap holders .......................... 3-14MMain switch/steering lock........................ 3-2
Model label ............................................. 9-2NNeutral indicator light .............................. 3-3PPanels, removing and installing .............. 6-5
Parking ................................................... 5-4
Part locations .......................................... 2-1Pass switch ............................................. 3-6
Periodic maintenance and lubrication
chart ...................................................... 6-2
Pre-operation check list........................... 4-2
RRear brake light switch, adjusting ......... 6-19SSafety information ................................... 1-1
Seats ..................................................... 3-11
Shifting .................................................... 5-2
Shift pedal ............................................... 3-7
Shock absorber assembly, adjusting .... 3-13
Sidestand .............................................. 3-15
Sidestand, checking and lubricating...... 6-23
Spark plugs, checking ............................. 6-6
Specifications .......................................... 8-1
Speedometer unit .................................... 3-5
Starter (choke) knob.............................. 3-11
Starting a cold engine ............................. 5-1
Start switch.............................................. 3-6
Steering, checking................................. 6-24
Storage.................................................... 7-3
Storage compartment............................ 3-13
Supporting the motorcycle .................... 6-30TThrottle cable free play, adjusting ......... 6-13
Throttle grip and cable, checking and
lubricating ........................................... 6-21
Tires ...................................................... 6-14
Tool kit..................................................... 6-1
Troubleshooting .................................... 6-34
Troubleshooting chart ........................... 6-35
Turn signal indicator light ........................ 3-3
U5SCE1E0.book Page 1 Monday, September 8, 2003 11:32 AM