YAMAHA YFM250R 2011 Owners Manual

9-1
9
EBU25860
CLEANING AND STORAGE
EBU25902Cleaning Frequent, thorough cleaning of your ATV will not
only enhance its appearance but will improve its
general performance and extend the useful life of
many components.
1. Before cleaning the ATV:
a. Block off the end of the exhaust pipe to
prevent water entry. A plastic bag and
strong rubber band may be used.
b. Make sure the spark plug and all filler caps
are properly installed.
2. If the engine case is excessively greasy, apply
degreaser with a paint brush. Do not apply de-
greaser to the chain, sprockets or wheel ax-
les.
3. Rinse the dirt and degreaser off with a garden
hose. Use only enough pressure to do the job.
WARNING! Wet brakes may have reduced
stopping ability, increasing the chance of
an accident. Test the brakes after washing.
Apply the brakes several times at slow
speeds to let friction dry out the linings.
[EWB02311]
NOTICE: Excessive water pressuremay cause water seepage and deteriora-
tion of wheel bearings, brakes, transmis-
sion seals and electrical devices. Many
expensive repair bills have resulted from
improper high-pressure detergent applica-
tions such as those available in coin-oper-
ated car washers.
[ECB00711]
4. Once most of the dirt has been hosed off,
wash all surfaces with warm water and mild,
detergent-type soap. An old toothbrush or bot-
tle brush is handy for hard-to-reach places.
5. Rinse the ATV off immediately with clean wa-
ter and dry all surfaces with a chamois, clean
towel or soft absorbing cloth.
6. Dry the chain and lubricate it to prevent it from
rusting.
7. Clean the seat with a vinyl upholstery cleaner
to keep the cover pliable and glossy.
8. Automotive type wax may be applied to all
painted and chrome plated surfaces. Avoid
combination cleaner-waxes. Many contain
abrasives which may mar the paint or protec-
tive finish. When finished cleaning, start the
engine and let it idle for several minutes.
U1BT61E0.book Page 1 Tuesday, April 6, 2010 1:28 PM

9-2
9
EBU25933Storage Short-term
Always store your ATV in a cool, dry place and, if
necessary, protect it against dust with a porous
cover. NOTICE: Storing the ATV in a poorly ven-
tilated room or covering it with a tarp while it is
still wet, will allow water and humidity to seep
in and cause rust. To prevent corrosion, avoid
damp cellars, stables (because of the presence
of ammonia) and areas where strong chemi-
cals are stored.
[ECB00721]
Long-term
Before storing your ATV for several months:
1. Follow all the instructions in the “Cleaning”
section of this chapter.
2. Turn the fuel cock lever to “OFF”.
3. Drain the carburetor float chamber by loosen-
ing the drain bolt; this will prevent fuel deposits
from building up. Pour the drained fuel into the
fuel tank.
4. Fill up the fuel tank and add fuel stabilizer (if
available) to prevent the fuel from deteriorat-
ing.5. Perform the following steps to protect the cyl-
inder, piston rings, etc. from corrosion.
a. Remove the spark plug cap and spark
plug.
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- Specified amount:
7.5 ml of stabilizer to each liter of fuel (or 1
oz of stabilizer to each gallon of fuel)U1BT61E0.book Page 2 Tuesday, April 6, 2010 1:28 PM

9-3
9 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
8-35.
TIPMake any necessary repairs before storing the
ATV.U1BT61E0.book Page 3 Tuesday, April 6, 2010 1:28 PM

10-1
10
EBU25960
SPECIFICATIONS
Dimensions:Overall length:
1625 mm (64.0 in)
Overall width:
1072 mm (42.2 in)
Overall height:
1040 mm (40.9 in)
Seat height:
730 mm (28.7 in)
Wheelbase:
1110 mm (43.7 in)
Ground clearance:
100 mm (3.9 in)
Minimum turning radius:
2900 mm (114 in)Weight:With oil and fuel:
150.0 kg (331 lb)Noise and vibration level:Noise level (77/311/EEC):
YFM25RA 81.0 dB(A)@3500 r/min
YFM25RSEA 81.0 dB(A)@3500 r/min
Noise level 40 CFR Part 205 Subpart D (Acceleration):
YFM25RA 78.8 dB(A)
YFM25RSEA 78.8 dB(A)
Vibration on seat (EN1032, ISO5008):
YFM25RA Will not exceed 0.5 m/s²
YFM25RSEA Will not exceed 0.5 m/s²Vibration on handlebar (EN1032, ISO5008):
YFM25RA Will not exceed 2.5 m/s²
YFM25RSEA Will not exceed 2.5 m/s²
Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
249 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 sumpEngine oil:Recommended brand:
YAMALUBE
U1BT61E0.book Page 1 Tuesday, April 6, 2010 1:28 PM

10-2
10
Type:
SAE 5W-30, 10W-30, 10W-40, 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:
1.25 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 element
Fuel:Recommended fuel:
YFM250RA Unleaded gasoline only
YFM250RSEA Unleaded gasoline only
YFM25RA Regular unleaded gasoline only
YFM25RSEA 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: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 operationTransmission:Primary reduction system:
Spur gear
Primary reduction ratio:
76/22 (3.455)
Secondary reduction system:
Chain drive
0 10 30 50 70 90 110 130 ˚F
–20 –10 0 10 20 30 40 50 ˚CSAE 5W-30
SAE 10W-30
SAE 10W-40
SAE 15W-40
SAE 20W-40SAE 20W-50
U1BT61E0.book Page 2 Tuesday, April 6, 2010 1:28 PM

10-3
10
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)Front tire:Type:
Tubeless
Size:
AT20 x 7-10
Manufacturer/model:
DUNLOP/KT201
Rear tire:Type:
Tubeless
Size:
AT19 x 10-9
Manufacturer/model:
DUNLOP/KT205ALoading: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
U1BT61E0.book Page 3 Tuesday, April 6, 2010 1:28 PM

10-4
10
Rim size:
9 x 8.0ATFront 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:
YFM250RA Coil spring/oil damper
YFM250RSEA Coil spring/gas-oil damper
YFM25RA Coil spring/oil damper
YFM25RSEA Coil spring/gas-oil damper
Wheel travel:
190 mm (7.5 in)Rear suspension:Type:
Swingarm
Spring/shock absorber type:
Coil spring/gas-oil damperWheel 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:
Krypton bulbBulb voltage, wattage × quantity:Headlight:
12 V, 30/30 W × 2
Tail/brake light:
YFM250RA 12 V, 5.0/21.0 W × 1
YFM25RA 12 V, 5.0/21.0 W × 1
Tail/brake light:
YFM250RSEA LED
YFM25RSEA LED
Neutral indicator light:
12 V, 1.7 W × 1Fuse:Fuse:
15.0 A
U1BT61E0.book Page 4 Tuesday, April 6, 2010 1:28 PM

11-1
11
EBU26000
CONSUMER INFORMATION
EBU28200Identification numbers Record the vehicle identification number and mod-
el label information in the spaces provided below
for assistance when ordering spare parts from a
Yamaha dealer or for reference in case the ATV is
stolen.
VEHICLE IDENTIFICATION NUMBER:
MODEL LABEL INFORMATION:EBU26041Vehicle identification number
The vehicle identification number is stamped into
the frame.The year of manufacture is listed in the vehicle
identification number as shown in the illustration.
1. Vehicle identification number
1
U1BT61E0.book Page 1 Tuesday, April 6, 2010 1:28 PM

11-2
11
TIPThe vehicle identification number is used to identify
your 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
2. Year of manufacture
00
8 : 2008
9 : 2009
A : 2010
B : 2011(I, O, Q, U, Z not used)
12
1. Model label
1
U1BT61E0.book Page 2 Tuesday, April 6, 2010 1:28 PM

INDEX
AAccessories and loading ................................................ 6-6
Air filter element, cleaning ............................................ 8-14BBattery .......................................................................... 8-35
Brake and clutch levers, checking and lubricating ....... 8-32
Brake fluid, changing .................................................... 8-25
Brake fluid level, checking ............................................ 8-23
Brake lever free play, checking the front ...................... 8-25
Brake lever (YFM25RA/YFM250RA) ............................. 4-5
Brake lever (YFM25RSEA/YFM250RSEA) .................... 4-5
Brake light switches ..................................................... 8-27
Brake pads, checking the front and rear ...................... 8-22
Brake pedal .................................................................... 4-6
Brake pedal, checking and lubricating ......................... 8-33
Brake pedal position, checking .................................... 8-25
Brakes .......................................................................... 8-22
Brakes, front and rear .................................................... 5-3CCables, checking and lubricating ................................. 8-31
Carburetor, adjusting .................................................... 8-20
Chassis fasteners ........................................................... 5-6
Cleaning ......................................................................... 9-1
Clutch lever .................................................................... 4-4
Clutch lever free play, adjusting ................................... 8-28DDrive chain ..................................................................... 5-4
Drive chain, lubricating ................................................. 8-31Drive chain slack .......................................................... 8-29
EEngine break-in .............................................................. 6-4
Engine, cold start ........................................................... 6-1
Engine idling speed ...................................................... 8-20
Engine oil ....................................................................... 5-3
Engine oil and oil filter element .................................... 8-11
Engine, starting a warm ................................................. 6-2
Engine stop switch ......................................................... 4-2FFuel ......................................................................... 4-8, 5-3
Fuel cock ...................................................................... 4-10
Fuel tank cap .................................................................. 4-8
Fuse, replacing ............................................................. 8-38HHandlebar switches ........................................................ 4-2
Headlight beam, adjusting ............................................ 8-41
Headlight bulb, replacing .............................................. 8-39IIdentification numbers .................................................. 11-1
Indicator light .................................................................. 4-2
Instruments, lights and switches .................................... 5-6LLabel locations ............................................................... 1-1
Light switch .................................................................... 4-3MMain switch .................................................................... 4-1
Maintenance and lubrication chart ................................. 8-5
U1BT61E0.book Page 1 Tuesday, April 6, 2010 1:28 PM