Page 67 of 106

6-23
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
EW000077
wBecause loading has an enormous
impact on the handling, braking,
performance and safety character-
istics of your scooter, you should
keep the following precautions in
mind.
8NEVER OVERLOAD THE
SCOOTER! Operation of an
overloaded scooter may result
in tire damage, loss of control,
or severe injury. Make sure
that the total weight of rider,
cargo, and accessories does
not exceed the specified maxi-
mum load for the vehicle.
8Do not carry along loosely
packed items, which can shift
during a ride.
8Securely pack the heaviest
items close to the center of the
scooter and distribute the
weight evenly on both sides.
8Adjust the suspension and tire
air pressure with regard to the
load.
EW000082
w8The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the tempera-
ture of the tires equals the
ambient temperature).
8The tire air pressure must be
adjusted in accordance with
the riding speed and with the
total weight of rider, passen-
ger, cargo, and accessories
approved for this model.
Tire air pressure
(measured on cold tires)
Load*FrontRear
Up to 90 kg
175 kPa
(1.75kg/cm
2,
1.75 bar)200 kPa
(2.00 kg/cm
2,
2.00 bar)
90 kgÐmaximum
200 kPa
(2.00 kg/cm
2,
2.00 bar)225 kPa
(2.25 kg/cm
2,
2.25 bar)
Maximum load*187 kg
*Total weight of rider, passenger, cargo and
accessories
EAU00675
TiresTo maximize the performance, dura-
bility, and safe operation of your
scooter, note the following points
regarding the specified tires.
Tire air pressure
The tire air pressure should be
checked and, if necessary, adjusted
before each ride.
5GM-9-E1(No ABS) 9/27/00 2:18 PM Page 66
Page 93 of 106

Specifications
ModelYP250
Dimensions
Overall length2,140 mm
Overall width780 mm
Overall height1,350 mm
Seat height730 mm
Wheelbase1,535 mm
Ground clearance120 mm
Minimum turning radius2,700 mm
Basic weight (with oil and full
fuel tank)168 kg
Engine
Engine typeLiquid-cooled 4-stroke, SOHC
Cylinder arrangementForward inclined single
cylinder
Displacement249 cm
3
Bore ´Stroke69.0 ´66.8 mm
Compression ratio10:1
Starting systemElectric starter
Lubrication systemWet sump
EAU01038
SPECIFICATIONS
1
2
3
4
5
6
78
9
8-1
Engine oil
Type
Recommended engine oil
classificationAPI Service SE, SF, SG type
or highercCBe sure to use motor oils that do not contain anti-friction
modifiers. Passenger car motor oils (often labeled ÒEnergy
ConservingÓ) contain anti-friction additives which will cause
clutch and/or starter clutch slippage, resulting in reduced
component life and poor engine performance.
Quantity
Periodic oil change1.2 L
Total amount (dry engine)1.4 L
–10° 0° 10° 20° 30°
40°
SAE 10W/30
SAE 10W/40
SAE 20W/40
SAE 20W/50
–20°
SAE 15W/40 50°C
5GM-9-E1(No ABS) 9/27/00 2:18 PM Page 92
Page 94 of 106

8-2
SPECIFICATIONS
1
2
3
4
5
6
78
9
Final gear case oil
TypeEngine oil SAE 10W-30
(API SE)
Total amount0.25 L
Radiator capacity
(including all routes)1.4 L
Air filterWet type element
Fuel
TypeRegular unleaded gasoline
Fuel tank capacity12 L
Carburetor
ManufacturerTEIKEI
Model ´ quantityY28V-1E ´ 1
Spark plug
Manufacturer/modelNGK / DR8EA
Spark plug gap0.6Ð0.7 mm
Clutch typeDry, centrifugal automatic
Transmission
Primary reduction systemHelical gear
Primary reduction ratio40/15 (2.666)
Secondary reduction systemHelical gear
Secondary reduction ratio38/15 (2.533)
Transmission typeV-belt automatic
OperationCentrifugal automatic typeChassis
Frame typeSteel tube underbone
Caster angle28¡
Trail103 mm
Tires
Front
TypeTubeless
Size110/90-12 64L
Manufacturer/INOUE / MB67
modelMICHELIN / BOPPER
Rear
TypeTubeless
Size130/70-12 62L
Manufacturer/INOUE / MB67
modelMICHELIN / BOPPER
Maximum load*187 kg
Air pressure (cold tire)
up to 90 kg load*
Front175 kPa (1.75 kg/cm
2, 1.75 bar)
Rear200 kPa (2.00 kg/cm2, 2.00 bar)
90 kg loadÐmaximum load*
Front200 kPa (2.00 kg/cm2, 2.00 bar)
Rear225 kPa (2.25 kg/cm2, 2.25 bar)
* Total weight of rider, passenger, cargo and accessories
5GM-9-E1(No ABS) 9/27/00 2:18 PM Page 93
Page 97 of 106
1
2
3
4
5
6
78
9
8-5
SPECIFICATIONS
EAU01064
Conversion tableAll specification data in this manual are listed in SI and
METRIC UNITS.
Use this table to convert METRIC unit data to
IMPERIAL unit data.
Ex.
METRICMULTIPLIERIMPERIAL
** mm´0.03937=** in
2 mm´0.03937=0.08 in
METRIC TO IMPERIAL
Metric unitMultiplierImperial unit
m¥kg7.233ft¥lb
Torquem¥kg86.794in¥lb
cm¥kg0.0723ft¥lb
cm¥kg0.8679in¥lb
Weightkg2.205lbg0.03527oz
Speedkm/hr0.6214mph
km0.6214mi
m3.281ft
Distancem1.094yd
cm0.3937in
mm0.03937in
cc (cm3)0.03527oz (IMP liq.)
Volume/cc (cm3)0.06102cu¥in
CapacityL (liter)0.8799qt (IMP liq.)L (liter)0.2199gal (IMP liq.)
kg/mm55.997lb/in
Misc.kg/cm214.2234psi (lb/in2)Centigrade (¡C)
9/5 + 32
Fahrenheit (¡F)
CONVERSION TABLE
5GM-9-E1(No ABS) 9/27/00 2:18 PM Page 96