spark plugs YAMAHA XVS125 2000 Owners Manual

EAU00009
TABLE OF CONTENTS
GIVE SAFETY THE RIGHT OF WAY ..................1-1
DESCRIPTION ....................................................2-1
Left view .............................................................2-1
Right view ..........................................................2-2
Controls and Instruments ...................................2-3
INSTRUMENT AND CONTROL
FUNCTIONS ........................................................3-1
Main switch/steering lock ...................................3-1
Indicator lights ....................................................3-2
Speedometer unit ..............................................3-2
Anti-theft alarm (optional)...................................3-3
Handlebar switches............................................3-3
Clutch lever ........................................................3-5
Shift pedal ..........................................................3-5
Brake lever .........................................................3-5
Brake pedal ........................................................3-6
Fuel tank cap .....................................................3-6
Fuel ....................................................................3-7
Fuel cock............................................................3-7
Starter (choke) lever ..........................................3-8
Helmet holder.....................................................3-9
Adjusting the shock absorber assemblies..........3-9
Sidestand .........................................................3-10
Ignition circuit cut-off system............................3-10PRE-OPERATION CHECKS ...............................4-1
Pre-operation check list .....................................4-1
OPERATION AND IMPORTANT RIDING
POINTS................................................................5-1
Starting the engine .............................................5-1
Starting a warm engine ......................................5-3
Shifting ...............................................................5-3
Recommended shift points
(for Switzerland only) .......................................5-4
Tips for reducing fuel consumption ....................5-4
Engine break-in ..................................................5-4
Parking ...............................................................5-5
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...................................6-7
Engine oil and oil filter element ..........................6-9
Cleaning the air filter element ..........................6-12
Adjusting the carburetor ...................................6-14
Adjusting the engine idling speed ....................6-14
Adjusting the throttle cable free play ................6-15
Adjusting the valve clearance ..........................6-161
2
3
4
5
6
5JX-9-E0 4/9/0 4:11 AM Page 5

6-2
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU00473
Periodic maintenance and lubrication chart
No. ITEM CHECKS AND MAINTENANCE JOBSInitial
1,000 kmEvery
6,000 kmEvery
12,000 kmAnnual
check
1
*Fuel line¥ Check fuel hoses and vacuum hose for cracks or damage.
¥ Replace if necessary.ÖÖ
2 Spark plugs¥ Check condition.
¥ Clean, regap or replace if necessary.Ö
3
*Valves¥ Check valve clearance.
¥ Adjust if necessary.Ö
4 Air filter element¥ Clean or replace if necessary.Ö
5 Clutch¥ Check operation.
¥ Adjust or replace cable.ÖÖ
6
*Front brake¥ Check operation, fluid level and vehicle for fluid leakage.
(See NOTE on page 6-4.)
¥ Correct accordingly.
¥ Replace brake pads if necessary.ÖÖ Ö
7
*Rear brake¥ Check operation.
¥ Adjust brake pedal freeplay and replace brake shoes if necessary.ÖÖ Ö
8
*Brake hose¥ Check for cracks or damage.
¥ Replace if necessary.ÖÖ
9
*Wheels¥ Check balance, runout, spoke tightness and for damage.
¥ Tighten spokes and rebalance, replace if necessary.Ö
10
*Tires¥ Check tread depth and for damage.
¥ Replace if necessary.
¥ Check air pressure.
¥ Correct accordingly.Ö
11
*Wheel bearings¥ Check bearings for looseness or damage.
¥ Replace if necessary.Ö
12
*Swingarm¥ Check swingarm pivoting point for play.
¥ Correct if necessary.
¥ Lubricate with molybdenum disulfide grease every 24,000 km or 24
months (whichever comes first).Ö
5JX-9-E0 4/9/0 4:11 AM Page 30

PERIODIC MAINTENANCE AND MINOR REPAIR
6
6-7
2. Pull the rear of the panel out,
and then slide the panel forward
to release it in the front.To install the panel
1. Secure the front of the panel,
and then push the rear of the
panel in.
2. Install the bolt.
1
EAU03053*
Checking the spark plugs
To remove the spark plugs
1. Remove the spark plug caps.
1. Spark plug cap
5JX-9-E0 4/9/0 4:11 AM Page 35

6-8
PERIODIC MAINTENANCE AND MINOR REPAIR
6Do not attempt to diagnose such
problems yourself. Instead, take the
motorcycle to a Yamaha dealer. You
should periodically remove and
inspect the spark plugs because heat
and deposits will cause any spark
plug to slowly break down and erode.
If electrode erosion becomes exces-
sive, or if carbon and other deposits
are excessive, you should replace
the spark plug with the specified plug.
1
2. Use the spark plug wrench in the
tool kit to remove the spark plugs
as shown.
1. Spark plug wrench
Specified spark plug:
CR7HSA (NGK) or
U22FSR-U (DENSO)
Inspection
The spark plug is an important
engine component and is easy to
inspect. The condition of the spark
plug can indicate the condition of the
engine.
Normally, all spark plugs from the
same engine should have the same
color on the white insulator around
the center electrode. The ideal color
at this point is a medium-to-light tan
color for a motorcycle that is being
ridden normally. If one spark plug
shows a distinctly different color,
there could be something wrong with
the engine.
5JX-9-E0 4/9/0 4:11 AM Page 36

PERIODIC MAINTENANCE AND MINOR REPAIR
6
6-9
To install the spark plugs
1. Measure the electrode gap with
a wire thickness gauge and, if
necessary, adjust the gap to
specification.
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.
Spark plug gap:
0.6 – 0.7 mm
Tightening torque:
Spark plug:
12.5 Nm (1.25 m0kg)
a
a. Spark plug gap
EAU01523
Engine oil and oil filter
element
The engine oil level should be
checked before each ride. In addition,
the oil must be changed and the oil
filter element replaced at the intervals
specified in the periodic maintenance
and lubrication chart.
To check the engine oil level
1. Place the motorcycle on a level
surface and hold it in an upright
position.
NOTE:
Make sure that the motorcycle is
positioned straight up when checking
the oil level. A slight tilt to the side
can result in a false reading.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
5JX-9-E0 4/9/0 4:11 AM Page 37

6-42
1
2
3
4
5
6
7
8
9
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU01297
Troubleshooting chartEW000125
w
Keep away open flames and do not smoke while checking or working on the fuel system.
1. Fuel
2. Compression
3. Ignition
4. Battery
Remove the spark
There is compression.
There is no compression.Check the ignition.
Have a Yamaha dealer check the vehicle.
Wet
DryWipe off with a dry cloth and correct the spark
Have a Yamaha dealer check the vehicle.
The engine turns
The engine turnsThe battery is good.
Check the battely lead connections,
Check the fuel level
There is enough fuel.
There is no fuel.Check the compression.
in the fuel tank.
the electrodes. plugs and check
over quickly.
over slowly. and charge the battery if necessary.Open the throttle halfway and
The engine does not start.Check the battery.operate the electric starter. plug gaps, or replace the spark plugs.
Supply fuel.The engine does not start. Check the compression.
Operate the electric
starter. Operate the
electric starter.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
5JX-9-E0 4/9/0 4:11 AM Page 70

7
7-4
MOTORCYCLE CARE AND STORAGE
Storage
Short-term
Always store your motorcycle in a
cool, dry place and, if necessary, pro-
tect it against dust with a porous
cover.
ECA00014
cC
8Storing the motorcycle in a
poorly ventilated room or cov-
ering it with a tarp, while it is
still wet, will allow water and
humidity to seep in and cause
rust.
8To 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
several months:
1. Follow all the instructions in the
“Care” section of this chapter.
2. 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.
3. Turn the fuel cock lever to “ON”.
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
protect 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.
EWA00003
w
To prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turn-
ing the engine over.
6. Lubricate all control cables and
the pivoting points of all levers
and pedals as well as of the
sidestand/centerstand.
5JX-9-E0 4/9/0 4:11 AM Page 74