2010 YAMAHA WR 250R gas type

PERIODIC MAINTENANCE AND ADJUSTMENT
6-11
64. If the engine oil is below the mini-
mum level mark, add sufficient oil
of the recommended type to raise
it to the correct level.
To change the engine oil (with or
without oil filter element replace-
ment)
1. Place the vehicle on a level sur-
face.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
3. Place an oil pan under the engine
to collect the used oil.4. Remove the engine oil filler cap,
the engine oil drain bolt and its
gasket to drain the oil from the
crankcase.
TIPSkip steps 5–8 if the oil filter element is
not being replaced.5. Remove the oil filter element cover
by removing the bolts.6. Remove the oil filter element and
O-rings.
7. Install a new oil filter element and
new O-rings.
1. Engine oil filler cap
2. Maximum level mark
3. Minimum level mark
4. Engine oil level check window
1
2
3
4
1. Engine oil drain bolt
2. Gasket
12
1. Oil filter element cover
2. Oil filter element cover bolt
1. O-ring
2. Oil filter element
1
2
1
2
U32DE4E0.book Page 11 Monday, December 14, 2009 2:24 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-16
6
EAU44323
Cleaning the air filter element
and check hose The air filter element should be cleaned
or replaced at the intervals specified in
the periodic maintenance and lubrica-
tion chart. Clean or, if necessary, re-
place the air filter element more
frequently if you are riding in unusually
wet or dusty areas. In addition, the air
filter check hose must be frequently
checked and cleaned if necessary.
To clean the air filter element
1. Remove panel B. (See page 6-7.)
2. Open the air filter case cover by re-
moving the screw and pulling the
case cover outward as shown.3. Unhook the holding clip, and then
pull the air filter element out.
4. Remove the sponge material from
the air filter element frame, clean it
with solvent, and then squeeze the
remaining solvent out. WARNING!
Use only a dedicated parts
cleaning solvent. To avoid the
risk of fire or explosion, do not
use gasoline or solvents with a
low flash point.
[EWA10431]
NOTICE:
To avoid damaging the foam
material, handle it gently and
carefully, and do not twist or
wring it.
[ECA10511]
5. Apply oil of the recommended type
to the entire surface of the sponge
material, and then squeeze the ex-
cess oil out.
1. Screw
2. Air filter case cover
2
1
1. Holding clip
2. Air filter element
1
2
1. Sponge material
2. Air filter element frame
1
2
U32DE4E0.book Page 16 Monday, December 14, 2009 2:24 PM

SPECIFICATIONS
8-1
8
Dimensions:Overall length:
2180 mm (85.8 in)
Overall width:
810 mm (31.9 in)
Overall height:
1230 mm (48.4 in)
Seat height:
930 mm (36.6 in)
Wheelbase:
1420 mm (55.9 in)
Ground clearance:
300 mm (11.81 in)
Minimum turning radius:
2300 mm (90.6 in)Weight:With oil and fuel:
134 kg (295 lb)Engine:Engine type:
Liquid cooled 4-stroke, DOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
250 cm³
Bore × stroke:
77.0 × 53.6 mm (3.03 × 2.11 in)
Compression ratio:
11.80 :1
Starting system:
Electric starter
Lubrication system:
Wet sump
Engine oil:Recommended brand:
YAMALUBE
Type:
SAE 10W-30, 10W-40, 10W-50, 15W-40,
20W-40 or 20W-50
Recommended engine oil grade:
API service SG type or higher, JASO
standard MA
Engine oil quantity:
Without oil filter element replacement:
1.30 L (1.37 US qt, 1.14 Imp.qt)
With oil filter element replacement:
1.40 L (1.48 US qt, 1.23 Imp.qt)Cooling system:Coolant reservoir capacity (up to the
maximum level mark):
0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator capacity (including all routes):
0.90 L (0.95 US qt, 0.79 Imp.qt)Air filter:Air filter element:
Wet element
Fuel:Recommended fuel:
Premium unleaded gasoline only
Fuel tank capacity:
7.6 L (2.01 US gal, 1.67 Imp.gal)
Fuel reserve amount:
2.1 L (0.55 US gal, 0.46 Imp.gal)Fuel injection:Throttle body:
ID mark:
3D71 10Spark plug(s):Manufacturer/model:
NGK/CR9EK
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:
Wet, multiple-discTransmission:Primary reduction system:
Spur gear
Primary reduction ratio:
78/25 (3.120)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
43/13 (3.308)
Transmission type:
Constant mesh 6-speed
Operation:
Left foot operation
–20 –10 0
1020 30 40 50 C 10 30 50 70 90 110 0 130 F
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U32DE4E0.book Page 1 Monday, December 14, 2009 2:24 PM

SPECIFICATIONS
8-2
8
Gear ratio:
1st:
37/14 (2.642)
2nd:
29/16 (1.813)
3rd:
29/22 (1.318)
4th:
26/25 (1.040)
5th:
24/27 (0.889)
6th:
22/28 (0.786)Chassis:Frame type:
Semi double cradle
Caster angle:
26.67 °
Trail:
111.0 mm (4.37 in)Front tire:Type:
With tube
Size:
80/100-21M/C 51P
Manufacturer/model:
BRIDGESTONE/TW-301 FRear tire:Type:
With tube
Size:
120/80-18M/C 62P
Manufacturer/model:
BRIDGESTONE/TW-302 F
Loading:Maximum load:
185 kg (408 lb)
(Total weight of rider, passenger, cargo and
accessories)Tire air pressure (measured on cold
tires):Loading condition:
0–90 kg (0–198 lb)
Front:
125 kPa (1.25 kgf/cm², 18 psi)
Rear:
175 kPa (1.75 kgf/cm², 25 psi)
Loading condition:
90–185 kg (198–408 lb)
Front:
150 kPa (1.50 kgf/cm², 22 psi)
Rear:
200 kPa (2.00 kgf/cm², 29 psi)Front wheel:Wheel type:
Spoke wheel
Rim size:
21x1.60Rear wheel:Wheel type:
Spoke wheel
Rim size:
18x2.15Front brake:Type:
Single disc brake
Operation:
Right hand operationRecommended fluid:
DOT 4
Rear brake:Type:
Single disc brake
Operation:
Right foot operation
Recommended fluid:
DOT 4Front suspension:Type:
Telescopic fork
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
270.0 mm (10.63 in)Rear suspension:Type:
Swingarm (link suspension)
Spring/shock absorber type:
Coil spring/gas-oil damper
Wheel travel:
270.0 mm (10.63 in)Electrical system:Ignition system:
TCI
Charging system:
AC magnetoBattery:Model:
YTZ7S
Voltage, capacity:
12 V, 6.0 Ah
U32DE4E0.book Page 2 Monday, December 14, 2009 2:24 PM