light YAMAHA WHY 50 2003 User Guide

PERIODIC MAINTENANCE AND MINOR REPAIR
6
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Removing and installing the
panel
The panel shown above needs to be
removed to perform some of the main-
tenance jobs described in this chapter.
Refer to this section each time the pa-
nel needs to be removed and installed.
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1. Panel A
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Checking the spark plug
The spark plug is an important engine
component, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode,
it should be removed and checked in
accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can
reveal the condition of the engine.
The porcelain insulator around the
center electrode of the spark plug
should be a medium-to-light tan (the
ideal color when the scooter is ridden
normally). If the spark plug shows a
distinctly different color, the engine
could be defective. Do not attempt to
diagnose such problems yourself.
Instead, have a Yamaha dealer check
the scooter.
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Panel A
To remove the panel
1. Open the seat. (See page 3-8 for
seat opening and closing
procedures.)
2. Remove the panel by pulling it up
as shown.
To install the panel
1. Insert the rear of the panel in the
original position, and then push
the front of the panel inward..
2. Close the seat.

PERIODIC MAINTENANCE AND MINOR REPAIR
6
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Headlight bulbs get very hot.
Therefore, keep flammable products
away from a lit headlight bulb, and
do not touch the bulb until it has
cooled down.
4. Place a new bulb into position,
and then secure it with the bulb
holder.
5. Connect the lead connectors, and
then install the headlight unit by
installing the screws.
6. Have a Yamaha dealer adjust the
headlight beam if necessary.
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Replacing the headlight bulb
If the headlight bulb burns out, replace
it as follows.
1. Remove the headlight unit by
removing the screws.
2. Disconnect the headlight lead
connectors.
3. Remove the headlight bulb holder
by pushing it inward and turning it
counterclockwise, and then
remove the defective bulb.
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1. Headlight bulb holder
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Do not use a fuse of a higher amperage
rating than recommended to avoid
causing extensive damage to the
electrical system and possibly a fire.
3. Turn the key to "
" 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.

PERIODIC MAINTENANCE AND MINOR REPAIR
6
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Replacing the brake/taillight
bulb
1. Remove the brake/taillight lens by
removing the screws.
2. Remove the brake/taillight bulb
holder by turning it 1/4 turn
counter-clockwise.
3. Remove the defective bulb.
4. Place a new bulb into position,
and then secure it with the bulb
holder.
5. Place the brake/taillight lens in the
original position, and then install
the screw.
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Replacing a turn signal light
bulb
1. Remove the turn signal light lens
by removing the screw.
2. Remove the defective bulb by
pushing it in and turning it
counterclockwise.
3. Insert a new bulb into the socket,
push it in, and then turn it
clockwise until it stops.
4. Install the lens by installing the
screw.
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Do not overtighten the screw,
otherwise the lens may break.
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SCOOTER CARE AND STORAGE
7
Care
While the open design of a scooter
reveals the attractiveness of the
technology, 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. Frequent 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
installed.3. Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such
products onto seals, gaskets and
wheel axles. Always rinse the dirt
and degreaser off with water.
Cleaning
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•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
affected area any longer than
instructed. Also, thoroughly
rinse the area off with water,
immediately dry it, and then
apply a corrosion protection
spray.
•Improper cleaning can damage
windshields, cowlings, panels
and other plastic parts. 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
cleaning products, solvent or
thinner, fuel (gasoline), rust
removers or inhibitors, brake
fluid, antifreeze or electrolyte.
•Do not use high-pressure
washers or steam-jet cleaners
since they cause water seepage
and deterioration in the following
areas: seals (of wheel and
swingarm bearings, fork and
brakes), electric components
(couplers, connectors, instru-
ments, switches and lights),
breather hoses and vents.
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SPECIFICATIONS
8
Electrical:
Ignition system typeC.D.I
Charging system Flywheel magneto
Battery
Model GM4-3B, YB4L-B, FB4L-B
Voltage/capacity 12 V / 4 Ah
Headlight type:Bulb
Bulbs (voltage/wattage x quantity):
Headlight 12V, 35W/35Wx1
Brake/brake light 12V, 5W/21Wx1
Turn signal light
Front 12V, 10Wx2
Rear 12V, 10Wx2
Meter lights 12V, 1.2Wx2
High beam indicator light 12V, 1.2Wx1
Turn signal indicator light 12V, 1.2Wx1
Oil warning light 12V, 2Wx1
Fuses:
Main fuse 7.5 A
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