2002 YAMAHA XVS650A spark plugs

6
PERIODIC MAINTENANCE AND MINOR REPAIR
Owner’s tool kit .................................................... 6-1
Periodic maintenance and lubrication chart ......... 6-2
Removing and installing panels ........................... 6-5
Checking the spark plugs .................................... 6-7
Engine oil and oil filter element ............................ 6-9
Final gear oil ...................................................... 6-12
Cleaning the air filter element ............................ 6-13
Adjusting the carburetors ................................... 6-14
Adjusting the engine idling speed ...................... 6-15
Adjusting the throttle cable free play .................. 6-15
Adjusting the valve clearance ............................ 6-16
Tires ................................................................... 6-16
Spoke wheels .................................................... 6-19
Adjusting the clutch lever free play .................... 6-19
Adjusting the brake lever free play ..................... 6-20
Adjusting the brake pedal position and
free play ........................................................... 6-21
Adjusting the rear brake light switch .................. 6-22
Checking the front brake pads and
rear brake shoes .............................................. 6-23
Checking the brake fluid level ............................ 6-24
Changing the brake fluid .................................... 6-25Checking and lubricating the cables ................. 6-25
Checking and lubricating the throttle grip and
cable ............................................................... 6-25
Checking and lubricating the brake and
shift pedals ...................................................... 6-26
Checking and lubricating the brake and
clutch levers .................................................... 6-26
Checking and lubricating the sidestand ............ 6-27
Checking the front fork ...................................... 6-27
Checking the steering ....................................... 6-28
Checking the wheel bearings ............................ 6-29
Battery ............................................................... 6-29
Replacing the fuses .......................................... 6-31
Replacing the headlight bulb ............................. 6-32
Replacing a turn signal light bulb or the tail/
brake light bulb ................................................ 6-33
Supporting the motorcycle ................................ 6-34
Front wheel ....................................................... 6-35
Rear wheel ........................................................ 6-36
Troubleshooting ................................................. 6-38
Troubleshooting chart ........................................ 6-39
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-2
6
EAU03685
Periodic maintenance and lubrication chart
NOTE:_

The annual checks must be performed every year, except if a kilometer-based maintenance is performed instead.


From 50,000 km, repeat the maintenance intervals starting from 10,000 km.


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 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.
(See NOTE on page 6-4.)√√ √ √ √ √
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
9*Brake hoseCheck for cracks or damage.√√√√ √
Replace. (See NOTE on page 6-4.) Every 4 years
U5SCE0.book Page 2 Thursday, June 7, 2001 11:24 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
6
EAU00491
Panel B
To remove the panelRemove the bolt, and then pull the pan-
el off as shown.To install the panel
Place the panel in the original position,
and then install the bolt.
EAU03329
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.
1. Bolt
1. Spark plug cap
U5SCE0.book Page 7 Thursday, June 7, 2001 11:24 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
6 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
motorcycle 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 a
Yamaha dealer check the motorcycle. @3. Check each spark plug for elec-
trode erosion and excessive car-
bon or other deposits, and replace
it if necessary.
To install a spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
2. Clean the surface of the spark
plug gasket and its mating sur-
face, and then wipe off any grime
from the spark plug threads.
3. Install the spark plug with the
spark plug wrench, and then tight-
en it to the specified torque.
1. Spark plug wrench
Specified spark plug:
DPR7EA-9 (NGK) or
X22EPR-U9 (DENSO)
a. Spark plug gapSpark plug gap:
0.8–0.9 mm
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-39
6
EAU01297
Troubleshooting chart
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.
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.
U5SCE0.book Page 39 Thursday, June 7, 2001 11:24 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:@

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 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. @6. Lubricate all control cables and
the pivoting points of all levers and
pedals as well as of the sidestand/
centerstand.
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10-INDEXAAir filter element, cleaning ...................... 6-13
Anti-theft alarm ........................................3-3BBattery ................................................... 6-29
Brake and clutch levers, checking
and lubricating ..................................... 6-26
Brake and shift pedals, checking
and lubricating ..................................... 6-26
Brake fluid, changing ............................. 6-25
Brake fluid level, checking...................... 6-24
Brake lever...............................................3-6
Brake lever free play, adjusting .............. 6-20
Brake light switch (rear), adjusting ......... 6-22
Brake pads and shoes, checking ........... 6-23
Brake pedal..............................................3-6
Brake pedal position and free play,
adjusting .............................................. 6-21CCables, checking and lubricating............ 6-25
Carburetors, adjusting............................ 6-14
Care.........................................................7-1
Clutch lever ..............................................3-5
Clutch lever free play, adjusting ............. 6-19
Conversion table ......................................8-6DDimmer switch .........................................3-4EEngine break-in........................................5-5
Engine oil and oil filter element.................6-9
Engine stop switch ...................................3-4
Engine trouble warning light .................... 3-2FFinal gear oil .......................................... 6-12
Front fork, checking ............................... 6-27
Fuel ......................................................... 3-7
Fuel cock ................................................. 3-9
Fuel consumption, tips for reducing ......... 5-4
Fuel tank cap ........................................... 3-7
Fuses, replacing .................................... 6-31HHandlebar switches ................................. 3-3
Headlight bulb, replacing ....................... 6-32
Helmet holder ........................................ 3-13
High beam indicator light ......................... 3-2
Horn switch ............................................. 3-4IIdentification numbers ............................. 9-1
Idling speed, adjusting ........................... 6-15
Ignition circuit cut-off system.................. 3-17
Indicator and warning lights ..................... 3-2KKey identification number ........................ 9-1LLight switch.............................................. 3-4
Luggage strap holders ........................... 3-16MMain switch/steering lock ......................... 3-1
Model label .............................................. 9-2
NNeutral indicator light ...............................3-2PPanels, removing and installing ................6-5
Parking.....................................................5-5
Part locations ...........................................2-1
Pass switch ..............................................3-4
Periodic maintenance and
lubrication chart .....................................6-2
Pre-operation check list ............................4-1SSafety information ....................................1-1
Seats (XVS650) .....................................3-11
Passenger seat.................................3-11
Rider seat .........................................3-11
Seats (XVS650A) ...................................3-12
Passenger seat.................................3-12
Rider seat .........................................3-12
Shifting .....................................................5-3
Shift pedal (XVS650)................................3-5
Shift pedal (XVS650A) .............................3-5
Shift points (for Switzerland only) .............5-4
Shock absorber assembly, adjusting ......3-15
Sidestand ...............................................3-17
Sidestand, checking and lubricating .......6-27
Spark plugs, checking ..............................6-7
Specifications ...........................................8-1
Speedometer unit.....................................3-3
Starter (choke) knob...............................3-10
Starting a warm engine ............................5-2
Starting the engine ...................................5-1
Start switch ..............................................3-4
U5SCE0.book Page 1 Thursday, June 7, 2001 11:24 AM