PERIODIC MAINTENANCE AND MINOR REPAIR
6
2 1
ZAUM0531
1
2
ZAUM0532
1. Lens
2. Screw (x2)
6-21
EAU01623
Replacing the tail/brake light
bulb
1. Remove the tail/brake light lens by
removing the screws.
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
screws.
EC000108
Do not overtighten the screws,
otherwise the lens may break.
EAU03497
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.
ECA00065
Do not overtighten the screw,
otherwise the lens may break.
EAU01008
Troubleshooting
Although Yamaha scooters receive a
thorough inspection before shipment
from the factory, trouble may occur
during 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
yourself. However, should your scoo-
ter require any repair, take it to a
Yamaha dealer, whose skilled
technicians have the necessary tools,
experience, and know-how to service
the scooter properly.
Use only genuine Yamaha replacement
parts. Imitation parts may look like
Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.
1. Screw
2. Lens
SPECIFICATIONS
8
8-1 Model EW50
Dimensions:
Overall length 1,785 mm
Overall width 668 mm
Overall height 1,077 mm
Seat height 787 mm
Wheelbase 1,202 mm
Minimum ground clearance 185 mm
Minimum turning radius 1,800 mm
Weight:
Wet (with oil and a full fuel tank) 81 kg
Engine:
Engine type Air cooled, 2strokes
Cylinder arrangement Single cylinder, vertical
Displacement 49.2 cc
Bore x stroke 40.0 x 39.2 mm
Compression ratio 11.2:1
Starting system type Electric and kick starter
Lubrication system Separate lubrication
(Autolube)
Engine oil:
Type Yamalube 2
or 2 strokes engine oil
Classification Jaso FC or ISO EG-C, EG-D
Quantity 1.3 LFinal transmission oil:
Type SAE 10W30 type SE
Capacity 0.11L
Air filter type:Wet type element
Fuel:
Recommended fuel Regular unleaded gasoline
(RON 91 mini)
Fuel tank capacity 6.5 L
Carburetor:
Type/quantity TK ø12
Manufacturer TEIKEI
Spark plug:
Type / Manufacturer BR8HS / NGK or BR9HS/NGK
Spark plug gap 0.5—0.7 mm
Clutch type:Dry, centrifugal automatic
Transmission:
Primary reduction system Helical gear
Primary reduction ratio 52/13 (4.000)
Secondary reduction system Spur gear
Secondary reduction ratio 42/13 (3.230)
Transmission type V-belt automatic
Operation Centrifugal automatic type
Chassis:
Frame type Steel tube underbone
Caster angle 27°
Trail 90 mm
Specifications
