YAMAHA YFM250R 2012 Owners Manual

8-44
8
EBU25752Troubleshooting chart
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition. Have a Yamaha dealer
check the ATV.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the ATV.
The engine does not start.
Have a Yamaha dealer
check the ATV.
The engine does not start.
Check the battery.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
DryWet
Open the throttle halfway and operate
the electric starter.
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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 toprevent 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 pressure may 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.
U1BT62E0.book Page 1 Tuesday, April 19, 2011 7:06 PM

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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)U1BT62E0.book Page 2 Tuesday, April 19, 2011 7:06 PM

9-3
9ly, 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.U1BT62E0.book Page 3 Tuesday, April 19, 2011 7:06 PM

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EBU25961
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):YFM25RB 81.0 dB(A)@3500 r/min
A-weighted sound power level:
YFM25RB 93.0 dB(A)@3500 r/min
Vibration on seat (EN1032, ISO5008): YFM25RB Will not exceed 0.5 m/s ²
Vibration on handlebar (EN1032, ISO5008): YFM25RB Will not exceed 2.5 m/s ²
Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement: Forward-inclined single cylinder
Displacement:
249 cm ³
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
U1BT62E0.book Page 1 Tuesday, April 19, 2011 7:06 PM

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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 elementFuel:Recommended fuel:YFM250RB Unleaded gasoline only
YFM25RB 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
Secondary reduction ratio:
38/14 (2.714)
Transmission type: Constant mesh 5-speed
Operation: Left foot operation
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
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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/KT201Rear tire:Type: Tubeless
Size:
AT19 x 10-9
Manufacturer/model: DUNLOP/KT205A
Loading: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/cm ², 4.0 psi)
Rear:
27.5 kPa (0.275 kgf/cm ², 4.0 psi)
Minimum: Front:
24.5 kPa (0.245 kgf/cm ², 3.6 psi)
Rear: 24.5 kPa (0.245 kgf/cm ², 3.6 psi)Front wheel:Wheel type:
Panel wheel
Rim size: 10 x 5.5ATRear wheel:Wheel type:
Panel wheel
Rim size: 9 x 8.0ATFront brake:Type:
Disc brake
Operation: Right hand operation
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Specified brake fluid:DOT 4Rear brake:Type:
Disc brake
Operation: Right foot operation
Specified brake fluid: DOT 4Front suspension:Type:Double wishbone
Spring/shock absorber type: Coil spring/oil damper
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 Ah
Headlight:Bulb type:
Krypton bulbBulb voltage, wattage × quantity:Headlight:
12 V, 30.0/30.0 W × 2
Tail/brake light:
12 V, 5.0/21.0 W × 1
Neutral indicator light: 12 V, 1.7 W × 1Fuse:Fuse:
15.0 AEBU30400For EUR only
The figures quoted are emission levels and are not
necessarily safe working levels. Whilst there is a
correlation between the emission and exposure
levels, this cannot be used reliably to determine
whether or not further precautions are required.
Factors that influence the actual level of exposure
of work-force include the characteristics of the
work room, the other sources of noise, etc. i.e. the
number of machines and other adjacent process-
es, and the length of time for which an operator is
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exposed to the noise. Also the permissible expo-
sure level can vary from country. This information,
however, will enable the user of the machine to
make a better evaluation of the hazard and risk.
U1BT62E0.book Page 5 Tuesday, April 19, 2011 7:06 PM

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11
EBU26000
CONSUMER INFORMATION
EBU28201Identification 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
U1BT62E0.book Page 1 Tuesday, April 19, 2011 7:06 PM