Page 59 of 106
6-15
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
93.Wait a few minutes until the oil
settles, remove the oil filler cap,
wipe the dipstick clean, insert it
back into the oil filler hole (with-
out screwing it in), and then
remove it again to check the oil
level.
NOTE:
The engine oil should be between the
minimum and maximum level marks.
3121
1.Engine oil filler cap
2.Maximum level mark
3.Minimum level mark
4.If the engine oil is below the min-
imum level mark, add sufficient
oil of the recommended type to
raise it to the correct level.
5.Insert the dipstick into the oil filler
hole, and then tighten the oil filler
cap.
1
1.Engine oil drain boltTo change the engine oil
1.Start the engine, warm it up for
several minutes, and then turn it
off.
2.Place an oil pan under the
engine to collect the used oil.
3.Remove the engine oil filler cap
and the engine oil drain bolt to
drain the oil from the crankcase.
5GM-9-E1(No ABS) 9/27/00 2:18 PM Page 58
Page 65 of 106
6-21
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
NOTE:
The sponge material should be wet
but not dripping.7.Insert the sponge material into
the air filter case.
8.Install the air filter case cover by
installing the screws. Recommended oil:
Engine oil
4.Check the sponge material for
damage and replace it if neces-
sary.
5.Allow the sponge material to dry.
6.Apply oil of the recommended
type to the entire surface of the
sponge material, and then
squeeze the excess oil out.
2
1
1.V-belt case air filter cover
2.Screw (´3)Cleaning the V-belt case air filter
element
1.Remove cowling A (See page
6-7 for cowling removal and
installation procedures.)
2.Remove the air filter case cover
by removing the screws.
3.Remove the V-belt case air filter
cover by removing the screws.
5GM-9-E1(No ABS) 9/27/00 2:18 PM Page 64
Page 71 of 106
6-27
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
1
Observe these precautions:
8When checking the fluid level,
make sure that the top of the
master cylinder or brake fluid
reservoir is level.
8Use only the recommended qual-
ity brake fluid, otherwise the rub-
ber seals may deteriorate, caus-
ing leakage and poor braking
performance.1.Minimum level markREARRecommended brake fluid:
DOT 4
8Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor braking perfor-
mance.
8Be careful that water does not
enter the master cylinder or
brake fluid reservoir when refill-
ing. Water will significantly lower
the boiling point of the fluid and
may result in vapor lock.
8Brake fluid may deteriorate paint-
ed surfaces or plastic parts.
Always clean up spilled fluid
immediately.
8As the brake pads wear, it is nor-
mal for the brake fluid level to
gradually go down. However, if
the brake fluid level goes down
suddenly, have a Yamaha dealer
check the cause.
1
EAU03607
Checking the brake fluid
levelInsufficient brake fluid may allow air
to enter the brake system, possibly
causing it to become ineffective.
Before riding, check that the brake
fluid is above the minimum level mark
and replenish if necessary. A low
brake fluid level may indicate worn
brake pads and/or brake system
leakage. If the brake level is low, be
sure to check the brake pads for
wear and the brake system for leak-
age.1.Minimum level mark FRONT
5GM-9-E1(No ABS) 9/27/00 2:18 PM Page 70
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 95 of 106
Wheels
Front
TypeCast wheel
Size12 ´MT2.75
Rear
TypeCast wheel
Size12 ´MT3.50
Brakes
Front
TypeSingle disc brake
OperationRight hand
FluidDOT 4
Rear
TypeSingle disc brake
OperationLeft hand
FluidDOT 4
Suspension
FrontTelescopic fork
RearUnit swingSpring/shock absorbers
FrontCoil spring/oil damper
RearCoil spring/oil damper
Wheel travel
Front100 mm
Rear90 mm
Electrical
Ignition systemTransistorized coil ignition
(digital)
Charging system
TypeA.C. magneto
Standard output14 V, 19.5 A @ 5,000 r/min
Battery
TypeGT7B-4
Voltage, capacity12 V, 6.5 AH
Headlight bulb typeHalogen bulb
Bulb voltage, wattage ´quantity
Headlight12 V, 60/55 W ´1
12 V, 55 W ´1
Tail/brake light12 V, 5/21 W ´2
Front turn signal light12 V, 21 W ´2
Rear turn signal light12 V, 16 W ´2
SPECIFICATIONS
1
2
3
4
5
6
78
9
8-3
5GM-9-E1(No ABS) 9/27/00 2:18 PM Page 94
