2011 YAMAHA YFM250R-W Owners Manual

9-3
9 b. Pour a teaspoonful of engine oil into the
spark plug bore.
c. Install the spark plug cap onto the spark
plug, and then place the spark plug on the
cylinder head so that the electrodes are
grounded. (This will limit sparking during
the next step.)
d. Turn the engine over several times with the
starter. (This will coat the cylinder wall with
oil.)
e. Remove the spark plug cap from the spark
plug, and then install the spark plug and
the spark plug cap.
6. Lubricate all control cables and the pivoting
points of all levers and pedals.
7. Check and, if necessary, correct the tire air
pressure, and then block up the ATV so that
all of its wheels are off the ground. Alternative-
ly, turn the wheels a little every month in order
to prevent the tires from becoming degraded
in one spot.
8. Cover the muffler outlet with a plastic bag to
prevent moisture from entering it.
9. Remove the battery and fully charge it. Store
it in a cool, dry place and charge it once a
month. Do not store the battery in an exces-sively cold or warm place [less than 0 °C (30
°F) or more than 30 °C (90 °F)]. For more in-
formation on storing the battery, see page
8-36.
TIPMake any necessary repairs before storing theATV.
U33B70E0.book Page 3 Wednesday, June 11, 2008 1:38 PM

10-1
10
EBU25960
SPECIFICATIONS
Dimensions:Overall length:
1650 mm (65.0 in)
Overall width:
1080 mm (42.5 in)
Overall height:
1100 mm (43.3 in)
Seat height:
730 mm (28.7 in)
Wheelbase:
1110 mm (43.7 in)
Ground clearance:
110 mm (4.3 in)
Minimum turning radius:
2900 mm (114 in)Weight:With oil and fuel:
160.0 kg (353 lb)Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
249.0 cm³
Bore × stroke:
74.0 × 58.0 mm (2.91 × 2.28 in)Compression ratio:
9.50 :1
Starting system:
Electric starter
Lubrication system:
Wet sump
Engine oil:Type:
SAE 5W-30 or SAE 10W-30 or SAE 10W-40 or SAE
15W-40 or SAE 20W-40 or SAE 20W-50
Recommended engine oil grade:
API service SG type or higher, JASO standard MA-20 -10 0
1020 304050 ˚C
SAE 15W-40
SAE 20W-40SAE 20W-50
SAE 10W-40
SAE 5W-30
SAE 10W-30
U33B70E0.book Page 1 Wednesday, June 11, 2008 1:38 PM

10-2
10
Engine oil quantity:
Without oil filter element replacement:
1.25 L (1.32 US qt, 1.10 Imp.qt)
With oil filter element replacement:
1.35 L (1.43 US qt, 1.19 Imp.qt)Air filter:Air filter element:
Wet elementFuel:Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
9.0 L (2.38 US gal, 1.98 Imp.gal)
Fuel reserve amount:
1.0 L (0.26 US gal, 0.22 Imp.gal)Carburetor:Manufacturer:
MIKUNI
Type × quantity:
BSR29 x 1Spark plug (s):Manufacturer/model:
NGK/DR7EA
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:
Wet, multiple-disc
Operation:
Left hand operation
Transmission:Primary reduction system:
Spur gear
Primary reduction ratio:
76/22 (3.455)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
38/14 (2.714)
Transmission type:
Constant mesh 5-speed
Operation:
Left foot operation
Gear ratio:
1st:
37/13 (2.846)
2nd:
33/18 (1.833)
3rd:
29/21 (1.381)
4th:
27/24 (1.125)
5th:
28/29 (0.966)Chassis:Frame type:
Steel tube frame
Caster angle:
6.0 °
Trail:
23.0 mm (0.91 in)
U33B70E0.book Page 2 Wednesday, June 11, 2008 1:38 PM

10-3
10
Front tire:Type:
Tubeless
Size:
AT21 x 7-10
Manufacturer/model:
MAXXIS/C9207Rear tire:Type:
Tubeless
Size:
AT20 x 10-9
Manufacturer/model:
MAXXIS/M976Loading:Maximum loading limit:
100.0 kg (220 lb)
(Total weight of rider, cargo, accessories, and tongue)Tire air pressure (measured on cold tires):Recommended:
Front:
27.5 kPa (0.275 kgf/cm², 4.0 psi)
Rear:
27.5 kPa (0.275 kgf/cm², 4.0 psi)
Minimum:
Front:
24.5 kPa (0.245 kgf/cm², 3.6 psi)
Rear:
24.5 kPa (0.245 kgf/cm², 3.6 psi)
Front wheel:Wheel type:
Panel wheel
Rim size:
10 x 5.5ATRear wheel:Wheel type:
Panel wheel
Rim size:
9 x 8.5ATFront brake:Type:
Dual disc brake
Operation:
Right hand operation
Recommended fluid:
DOT 4Rear brake:Type:
Single disc brake
Operation:
Right foot operation
Recommended fluid:
DOT 4Front suspension:Type:
Double wishbone
Spring/shock absorber type:
YFM250RSE-W Coil spring/gas-oil damper
YFM250R-W Coil spring/oil damper
U33B70E0.book Page 3 Wednesday, June 11, 2008 1:38 PM

10-4
10
Wheel travel:
190 mm (7.5 in)Rear suspension:Type:
Swingarm
Spring/shock absorber type:
Coil spring/gas-oil damper
Wheel travel:
200 mm (7.9 in)Electrical system:Ignition system:
DC. CDI
Charging system:
AC magnetoBattery:Model:
YTZ7S
Voltage, capacity:
12 V, 6.0 AhHeadlight:Bulb type:
Halogen bulbBulb voltage, wattage × quantity:Headlight:
12 V, 35.0/35.0 W × 1
Tail/brake light:
12 V, 5.0/21.0 W × 1
Front turn signal light:
12 V, 10.0 W
Rear turn signal light:
12 V, 10.0 WAuxiliary light:
12 V, 5.0 W
License plate light:
12 V, 5.0 W
Neutral indicator light:
12 V, 1.7 W × 1
High beam indicator light:
LED
Turn signal indicator light:
LED
Fuses:Main fuse:
15.0 A
Accessory fuse:
7.5 A
U33B70E0.book Page 4 Wednesday, June 11, 2008 1:38 PM

11-1
11
EBU26000
CONSUMER INFORMATION
EBU26011Identification numbers Record the key identification number, vehicle iden-
tification number and model label information in
the spaces provided below for assistance when or-
dering spare parts from a Yamaha dealer or for ref-
erence in case the ATV is stolen.
KEY IDENTIFICATION NUMBER:
VEHICLE IDENTIFICATION NUMBER:
MODEL LABEL INFORMATION:
EBU26020Key identification number
The key identification number is stamped into the
key. Record this number in the space provided and
use it for reference when ordering a new key.EBU26030Vehicle identification number
The vehicle identification number is stamped into
the frame.1. Key identification number
U33B70E0.book Page 1 Wednesday, June 11, 2008 1:38 PM

11-2
11
TIPThe vehicle identification number is used to identifyyour ATV.EBU26050Model label
The model label is affixed at the location in the il-
lustration. Record the information on this label in
the space provided. This information will be need-
ed when ordering spare parts from a Yamaha deal-
er.1. Vehicle identification number
1
1. Model label
1
U33B70E0.book Page 2 Wednesday, June 11, 2008 1:38 PM

INDEX
AAccessories and loading ................................................ 6-7
Air filter element, cleaning ............................................ 8-13
Auxiliary light bulb ........................................................ 8-41BBattery .......................................................................... 8-36
Brake and clutch levers, checking and lubricating ....... 8-33
Brake fluid, changing .................................................... 8-24
Brake fluid level, checking ............................................ 8-22
Brake lever free play, checking the front ...................... 8-24
Brake lever (YFM250RSE-W) ........................................ 4-7
Brake lever (YFM250R-W) ............................................. 4-6
Brake light switches ..................................................... 8-27
Brake pads, checking the front and rear ...................... 8-21
Brake pedal .................................................................... 4-7
Brake pedal, checking and lubricating ......................... 8-34
Brake pedal position, checking .................................... 8-25
Brakes, front and rear .................................................... 5-3CCables, checking and lubricating ................................. 8-32
Carburetor, adjusting .................................................... 8-18
Chassis fasteners ........................................................... 5-6
Cleaning ......................................................................... 9-1
Clutch lever .................................................................... 4-6
Clutch lever free play, adjusting ................................... 8-28DDrive chain ..................................................................... 5-4
Drive chain, lubricating ................................................. 8-31Drive chain slack .......................................................... 8-29
EEngine break-in .............................................................. 6-5
Engine, cold start ........................................................... 6-1
Engine idling speed ...................................................... 8-19
Engine oil ....................................................................... 5-3
Engine oil and oil filter element ...................................... 8-9
Engine, starting a warm ................................................. 6-3
Engine stop switch ......................................................... 4-3FFuel ....................................................................... 4-10, 5-3
Fuel cock ...................................................................... 4-11
Fuel tank cap .................................................................. 4-9
Fuse, replacing ............................................................. 8-38HHandlebar switches ........................................................ 4-3
Hazard switch ................................................................. 4-4
Headlight beam ............................................................ 8-40
Headlight bulb .............................................................. 8-39
High beam indicator light ................................................ 4-2
Horn switch .................................................................... 4-4IIdentification numbers .................................................. 11-1
Indicator lights ................................................................ 4-2
Instruments, lights and switches .................................... 5-6KKey identification number ............................................. 11-1
U33B70E0.book Page 1 Wednesday, June 11, 2008 1:38 PM