light YAMAHA VITY 125 2008 User Guide

PERIODIC MAINTENANCE AND MINOR REPAIR
6-4
6
19*Shock absorber as-
semblyCheck operation and shock ab-
sorber for oil leakage.√√√√
20*Fuel injectionCheck engine idle speed.√√√√√√
21 Engine oilChange. (See page 6-9.)
Check oil level and vehicle for oil
leakage.√Every 2000 km (1200 mi)
22*Engine oil strainerClean.√
23Final transmission
oilCheck vehicle for oil leakage.√√√√√
Change.√√√
24*V- b e l tReplace. Every 12000 km (7000 mi)
25*Front and rear brake
switchesCheck operation.√√√√√√
26Moving parts and
cablesLubricate.√√√√√
27*Throttle grip hous-
ing and cableCheck operation and free play.
Adjust the throttle cable free play
if necessary.
Lubricate the throttle grip housing
and cable.√√√√√
28*Air induction sys-
temCheck the air cut-off valve, reed
valve, and hose for damage.
Replace any damaged parts if
necessary.√√√√√
29*Lights, signals and
switchesCheck operation.
Adjust headlight beam.√√√√√√ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING
ANNUAL
CHECK 1000 km
(600 mi)6000 km
(3500 mi)12000 km
(7000 mi)18000 km
(10500 mi)24000 km
(14000 mi)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-6
6
EAU18712
Removing and installing cowl-
ings and panels The cowlings and panels shown need
to be removed to perform some of the
maintenance jobs described in this
chapter. Refer to this section each time
a cowling or panel needs to be re-
moved and installed.
EAU18851
Cowling A
To remove the cowlingRemove the screws, and then pull the
cowling off as shown.To install the cowling
Place the cowling in the original posi-
tion, and then install the screws.
EAU45470
Cowling B
To remove the cowling1. Remove the screws, and then pull
the cowling off as shown.
2. Disconnect the headlight coupler,
and the auxiliary light lead coupler.
1. Cowling A
2. Cowling B
3. Panel A
4. Panel B
3
4
12
1. Screw
11
1. Screw
1. Screw
1
1
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
6To install the cowling
1. Connect the headlight coupler,
and the auxiliary light lead coupler.
2. Place the cowling in the original
position, and then install the
screws.
EAU19281
Panel A
To remove the panelRemove the screw, and then pull the
panel off as shown.To install the panel
Place the panel in the original position,
and then install the screw.
EAU45450
Panel B
To remove the panel1. Pull up the floorboard mat.2. Remove the screws, and then pull
the panel off as shown.
To install the panel
1. Place the panel in the original posi-
tion, and then install the screws.
2. Place the floorboard mat in the
original position.
1. Headlight coupler
2. Auxiliary light lead coupler
1
2
1. Screw
1
1. Floorboard mat
1. Screw
1
1
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
6
EAU45590
Checking the spark plug The spark plug is an important engine
component, which is easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plug should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
To remove the spark plug
1. Place the vehicle on the center-
stand.
2. Remove panel A. (See page 6-6.)
3. Remove the spark plug cap.
4. Remove the spark plug as shown,
using the spark plug wrench,
which is located in the rear storage
compartment. (See page 3-9.)
To check the spark plug
1. Check that the porcelain insulator
around the center electrode of the
spark plug is a medium-to-light tan
(the ideal color when the vehicle is
ridden normally).
NOTE:If the spark plug shows a distinctly dif-
ferent color, the engine could be oper-
ating improperly. Do not attempt to
diagnose such problems yourself. In-
stead, have a Yamaha dealer checkthe vehicle.
2. Check the spark plug for electrode
erosion and excessive carbon or
other deposits, and replace it if
necessary.
To install the spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
1. Spark plug wrench
1. Spark plug wrench
1
1
Specified spark plug:
NGK/CR7E
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
62. Clean the surface of the spark plug
gasket and its mating surface, 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.
NOTE:If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4–1/2 turn
past finger tight. However, the spark
plug should be tightened to the speci-fied torque as soon as possible.
4. Install the spark plug cap.
5. Install the panel.
EAU45480
Engine oil The engine oil level should be checked
before each ride. In addition, the oil
must be changed at the intervals spec-
ified in the periodic maintenance and
lubrication chart.
The engine oil must also be changed at
the initial 1000 km (600 mi) and when
the oil change indicator color changes
from green to red. The oil change indi-
cator must be reset after the initial 1000
km (600 mi). (See page 3-2 for reset
procedures.)
To check the engine oil level
1. Place the vehicle on the center-
stand.NOTE:Make sure that the vehicle is positioned
straight up when checking the oil level.
A slight tilt to the side can result in afalse reading.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
1. Spark plug gapSpark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Tightening torque:
Spark plug:
13 Nm (1.3 m·kgf, 9.4 ft·lbf)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-25
6
EAUT2022
Replacing the fuse The fuse holder is located beside the
battery. Remove panel B to access the
fuse. (See page 6-6.)
If the fuse is blown, replace it as fol-
lows.
1. Turn the key to “OFF” and turn off
all electrical circuits.
2. Remove the blown fuse, and then
install a new fuse of the specified
amperage.
CAUTION:
ECAT1061


Do not use a fuse of a higher
amperage rating than recom-
mended to avoid causing exten-
sive damage to the electrical
system and possibly a fire.


After removing and installing
the main fuse, be sure to turn
the main switch from “ON” to
“OFF” three times in 3 seconds
intervals to initialize the idlespeed control system.
3. Turn the key to “ON” and turn on
the electrical circuits to check if the
devices operate.
4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
EAU45501
Replacing the headlight bulb This model is equipped with a quartz
bulb headlight. If the headlight bulb
burns out, replace it as follows.
1. Place the vehicle on the center-
stand.
2. Remove cowling B. (See page
6-6.)
3. Remove the headlight bulb cover.
4. Remove the headlight bulb holder
by turning it counterclockwise, and
then remove the defective bulb
from the headlight unit.
1. Fuse
2. Spare fuseSpecified fuse:
15.0 A1
2
1. Headlight bulb cover
1
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-26
6
WARNING
EWA10790
Headlight bulbs get very hot. There-
fore, keep flammable products away
from a lit headlight bulb, and do not
touch the bulb until it has cooleddown.
5. Place a new headlight bulb into po-
sition, and then install the bulb
holder by turning the holder clock-
wise.CAUTION:
ECA10660
Do not touch the glass part of the
headlight bulb to keep it free from
oil, otherwise the transparency ofthe glass, the luminosity of the bulb,
and the bulb life will be adversely af-
fected. Thoroughly clean off any dirt
and fingerprints on the headlight
bulb using a cloth moistened with al-
cohol or thinner.
6. Install the headlight bulb cover.
7. Install the cowling.
8. Have a Yamaha dealer adjust the
headlight beam if necessary.
EAUT1260
Replacing a front turn signal
light bulb CAUTION:
ECA10670
It is advisable to have a Yamahadealer perform this job.
1. Place the scooter on the center-
stand.
2. Remove cowling A. (See page
6-6.)
3. Remove the socket (together with
the bulb) by turning it counter-
clockwise.
4. Remove the defective bulb by
pushing it in and turning it counter-
clockwise.
1. Headlight bulb holder
2. Headlight bulb
1
2
1. Do not touch the glass part of the bulb.
1. Turn signal light bulb socket
1
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-27
65. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
6. Install the socket (together with the
bulb) by turning it clockwise.
7. Install the cowling.
EAU37741
Rear turn signal light and
tail/brake light If a rear turn signal light or the tail/brake
light does not come on, have a Yamaha
dealer check its electrical circuit or re-
place the bulb.
EAU45460
Replacing the auxiliary light
bulb If the auxiliary light bulb burns out, re-
place it as follows.
1. Place the vehicle on the center-
stand.
2. Remove cowling A. (See page
6-6.)
3. Remove the auxiliary light socket
(together with the bulb) by pulling it
out.
4. Remove the defective bulb by pull-
ing it out.
5. Insert a new bulb into the socket.1. Auxiliary light bulb
2. Auxiliary light bulb socket
12
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-28
6 6. Install the auxiliary light socket (to-
gether with the bulb) by pushing it
in.
7. Install the cowling.
EAU25860
Troubleshooting Although Yamaha scooters receive a
thorough inspection before shipment
from the factory, trouble may occur dur-
ing operation. Any problem in the fuel,
compression, or ignition systems, for
example, can cause poor starting and
loss of power.
The following troubleshooting chart
represents a quick and easy procedure
for checking these vital systems your-
self. However, should your scooter re-
quire any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the scooter prop-
erly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
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SCOOTER CARE AND STORAGE
7-1
7
EAU37833
Matte color caution CAUTION:
ECA15192
Some models are equipped with
matte colored finished parts. Be
sure to consult a Yamaha dealer for
advice on what products to use be-
fore cleaning the vehicle. Using a
brush, harsh chemical products or
cleaning compounds when cleaning
these parts will scratch or damage
their surface. Wax also should not
be applied to any matte colored fin-ished parts.
EAU26091
Care While the open design of a scooter re-
veals the attractiveness of the technol-
ogy, it also makes it more vulnerable.
Rust and corrosion can develop even if
high-quality components are used. A
rusty exhaust pipe may go unnoticed
on a car, however, it detracts from the
overall appearance of a scooter. Fre-
quent and proper care does not only
comply with the terms of the warranty,
but it will also keep your scooter looking
good, extend its life and optimize its
performance.
Before cleaning
1. Cover the muffler outlet with a
plastic bag after the engine has
cooled down.
2. Make sure that all caps and covers
as well as all electrical couplers
and connectors, including the
spark plug cap, are tightly in-
stalled.
3. Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such prod-ucts onto seals, gaskets and wheel
axles. Always rinse the dirt and de-
greaser off with water.
Cleaning
CAUTION:
ECA10781


Avoid using strong acidic wheel
cleaners, especially on spoked
wheels. If such products are
used on hard-to-remove dirt, do
not leave the cleaner on the af-
fected area any longer than in-
structed. Also, thoroughly rinse
the area off with water, immedi-
ately dry it, and then apply a cor-
rosion protection spray.


Improper cleaning can damage
plastic parts such as cowlings,
panels, windshields, headlight
lenses, meter lenses, etc. Use
only a soft, clean cloth or
sponge with mild detergent and
water to clean plastic.


Do not use any harsh chemical
products on plastic parts. Be
sure to avoid using cloths or
sponges which have been in
contact with strong or abrasive
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