INSTRUMENT AND CONTROL FUNCTIONS
3
1
2
ZAUM0020
1. Filler tube
2. Fuel level
EAU03753
Fuel
Make sure that there is sufficient fuel
in the tank. Fill the fuel tank to the
bottom of the filler tube as shown.
EW000130
•Do not overfill the fuel tank,
otherwise it may overflow when
the fuel warms up and expands.
•Avoid spilling fuel on the hot
engine.
EAU04206*
Recommended fuel:
REGULAR UNLEADED
GASOLINE ONLY
Fuel tank capacity:
Total amount:
6.5 L
Your Yamaha engine has been
designed to use regular unleaded
gasoline with a research octane
number of 91 or higher. If knocking (or
pinging) occurs, use a gasoline of a
different brand or premium unleaded
fuel. Use of unleaded fuel will extend
spark plug life and reduce maintenance
costs.
EWA00008
Since gasoline is flammable, the
following precautions must be
observed.
•Stop the engine before
refueling.
•Never attempt to refuel the
scooter while smoking or near
an open flame.
•Take special care not to spill
gasoline over the engine or
muffler when refueling
immediately after operation.
•Before starting the engine,
quickly wipe off any gasoline
spilled on the engine or muffler.
3-6
EAU00185
EC000008
Immediately wipe off spilled fuel
with a clean, dry, soft cloth, since
fuel may deteriorate painted surfa-
ces or plastic parts.
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
