2010 YAMAHA WR 250F oil level

1-5
DESCRIPTION
DESCRIPTION
• The machine you have purchased may differ slightly from those shown in the following.
• Designs and specifications are subject to change without notice.
1. Clutch lever
2. Hot starter lever
3. Engine stop switch
4. Multi-function display
5. Main switch
6. Start switch
7. Front brake lever
8. Throttle grip
9. Radiator cap
10. Fuel tank cap
11. Taillight
12. Kickstarter crank
13. Fuel tank 14. Headlight
15. Radiator
16. Coolant drain bolt
17. Rear brake pedal
18. Valve joint
19. Fuel cock
20. Cold starter knob
21. Air cleaner
22. Catch tank
23. Drive chain
24. Oil level check window
25. Shift pedal
26. Front fork

1-18
STARTING AND BREAK-IN
STARTING AND BREAK-IN
FUEL
Always use the recommended fuel as
stated below. Also, be sure to use
new gasoline.
Use only unleaded gasoline. The
use of leaded gasoline will cause
severe damage to the engine inter-
nal parts such as valves, piston
rings, and exhaust system, etc.
If knocking or pinging occurs, use a
different brand of gasoline or higher
octane grade.
• For refueling, be sure to stop the
engine and use enough care not
to spill any fuel. Also be sure to
avoid refueling close to a fire.
• Refuel after the engine, exhaust pipe, etc. have cooled off.
Gasohol (For Canada)
There are two types of gasohol: gas-
ohol containing ethanol and that con-
taining methanol. Gasohol containing
ethanol can be used if the ethanol
content does not exceed 10%. Gaso-
hol containing methanol is not recom-
mended by Yamaha because it can
cause damage to the fuel system or
vehicle performance problems.
HANDLING NOTE
Never start or run the engine in a
closed area. The exhaust fumes
are poisonous; they can cause
loss of consciousness and death
in a very short time. Always oper-
ate the machine in a well-ventilated
area.
• The carburetor on this machine has a built-in accelerator pump.
Therefore, when starting the en-
gine, do not operate the throttle
or the spark plug will foul.
• Unlike a two-stroke engine, this engine cannot be kick started
when the throttl e is open be-
cause the kickstarter may kick
back. Also, if the throttle is open
the air/fuel mixture may be too
lean for the engine to start.
• Before starting the machine, per- form the checks in the pre-opera-
tion check list.
AIR FILTER MAINTENANCE
According to "CLEANING THE AIR
FILTER ELEMENT" section in the
CHAPTER 3, apply the foam-air-filter
oil or its equivalent to the element.
(Excess oil in the element may ad-
versely affect engine starting.)
STARTING A COLD ENGINE
This model is equipped with an igni-
tion circuit cut-off system. The engine
can be started under the following
conditions.
• When the transmission is in neutral.
• When the clutch is disengaged with
the transmission in any position.
However, it is recommended to shift
into neutral before starting the en-
gine.
1. Inspect the coolant level.
2. Turn the fuel cock to "ON".
3. Push on the main switch to "ON".
4. Shift the transmission into neutral.
5. Fully open the cold starter knob "1".
6. Start the engine by pushing the start switch or by kicking the kick-
starter crank.
If the engine fails to start by pushing
the start switch, re lease the switch,
wait a few seconds, and then try
again. Each starting attempt should
be as short as possible to preserve
the battery. Do not crank the engine
more than 10 seconds on any one at-
tempt. If the engine does not start
with the starter motor, try using the
kickstarter crank.
• If the starter motor will no t turn
when pushing the start switch,
stop pushing it immediately and
kick start the engine in order to
avoid the load on the motor.
• Do not open the throttle while kicking the kickstarter crank.
Otherwise, the kickstarter crank
may kick back.
7. Return the cold starter knob to its original position and run the en-
gine at 3,000–5,000 r/min for 1 or
2 minutes.
Since this model is equipped with an
accelerator pump, if the engine is
raced (the throttle opened and
closed), the air/fuel mixture will be too
rich and the engine may stall. Also
unlike a two-stroke engine, this model
can idle.
Do not warm up th e engine for ex-
tended periods of time.
STARTING A WARM ENGINE
Do not operate the cold starter knob
and throttle. Pull the hot starter lever
"1" and start the engine by pushing
the start switch or by kicking the kick-
starter crank forcefully with a firm
stroke. As soon as the engine starts,
Release the hot starter lever to close
the air passage.
Recommended fuel:
Premium unleaded
gasoline only with a re-
search octane number
of 95 or higher.

2-9
MAINTENANCE SPECIFICATIONS
Front suspension:Front fork travel 300 mm (11.8 in)----
Fork spring free length 460 mm (18.1 in)455 mm (17.9
in)
Spring rate, STD K = 4.4 N/mm (0.449 kg/mm, 25.1 lb/in)----
Optional spring/spacer Yes----
Oil capacity 648 cm
3 (22.8 lmp oz, 21.9 US oz)----
Oil level 132 mm (5.20 in)----
(From top of outer tube with inner
tube and damper rod fully compressed without
spring.) 95–150 mm (3.74–5.91 in)
----
Oil grade Suspension oil "S1"----
Inner tube outer diamet er 48 mm (1.89 in) ----
Front fork top end 5 mm (0.20 in)----
Rear suspension: USA, CDN AUS, NZ, ZA EUROPE
Shock absorber travel 130 mm (5.12
in) ←←----
Spring free length 260 mm (10.24
in) ←←----
Fitting length 249 mm (9.80
in) 245.0 mm (9.65
in)248.5 mm (9.78
in)----
Preload length
1.5–22 mm
(0.06–0.87 in) ←←----
Spring rate, STD K = 52.0 N/mm
(5.30 kg/mm,
296.8 lb/in) ←←----
Optional spring Yes←←----
Enclosed gas pressure 1,000 kPa (10
kg/cm
2, 142
psi) ←←----
Swingarm: Swingarm free play limitEnd ---- 1.0 mm (0.04 in)
Wheel: USA, CDN, ZA AUS, NZ, EUROPE
Front wheel type Spoke wheel←----
Rear wheel type Spoke wheel←----
Front rim size/material 21 × 1.60/Aluminum←----
Rear rim size/mater ial 18 × 1.85/Aluminum 18 × 2.15/Aluminum ----
Rim runout limit: Radial --------2.0 mm (0.08
in)
Lateral --------2.0 mm (0.08
in)
Item
StandardLimit

3-3
MAINTENANCE INTERVALS FOR COMPETITION USE
• The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
• Hydraulic brake service • After disassembling the brake master cylinders and calipers, always change the fluid. Regularly check the brake fluid
levels and fill the reservoirs as required.
• Every two years replace the internal components of the brake master cylinders and calipers, and change the brake fluid.
• Replace the brake hoses every four years and if cracked or damaged.
MAINTENANCE INTERVALS FOR COMPETITION USE
• The following schedule is intended as a general guide to mainten ance and lubrication. Bear in mind that such factors as
weather, terrain, geographical location, and individual usage will alter the required maintenance and lubrication intervals.
If you are a doubt as to what intervals to follow in mainta ining and lubricating your machine, consult your Yamaha dealer.
• Periodic inspection is essential in making full use of the ma chine performance. The service life of the parts varies sub-
stantially according to the environment in which the machine runs (e.g., rain, dirt, etc.). Therefore, earlier inspection is
required by reference to the list below.
15 Sidestand pivot Check operation.
√√√
Apply lithium-soap-bas ed grease (all-purpose
grease) lightly.
16 * Front fork Check operation and for oil leakage.
√√
Replace if necessary.
17 * Shock absorber assembly Check operation and for oil leakage.
√√
Replace if necessary.
18 * Rear suspension link pivots Apply molybdenum disulfide grease lightly. √√
19 * Control cables Apply Yamaha chain and cable lube or engine
oil 10W-30 thoroughly. √√√
20 * Throttle grip housing and cable Check operation and free play.
√√√
Adjust the throttle cable free play if necessary.
Lubricate the throttle grip housing and cable.
21 * Chassis fasteners Check all chassis fitting and fasteners.
√√√
Correct if necessary.
22 Battery Check terminal for looseness and corrosion. √√
No. ITEM CHECKS AND MAINTENANCE JOBS
INITIAL
ODOMETER
READINGS
600 mi (1,000
km) or 1
month 1,800 mi
(3,000
km) or 3
months 3,000 mi
(5,000
km) or 6
months
Item After
break-
in Every
race
Every third
(or 500
km) Every
fifth (or 1,000
km)
As re-
quired Remarks
ENGINE OIL Replace ●●
VALVES Check the valve clearances ●● The engine must be cold.
Inspect ●Check the valve seats and valve
stems for wear.
Replace ●
VALVE SPRINGS Inspect ●Check the free length and the tilt.
Replace ●

3-5
MAINTENANCE INTERVALS FOR COMPETITION USE
CRANKInspect and clean ●●
CARBURETOR Inspect, adjust and clean ●●
AIR INDUCTION SYSTEM Inspect and clean ●● ●●
SPARK PLUG Inspect and clean ●●
Replace ●
DRIVE CHAIN Use chain lube.
Lubricate, slack, alignment ●● Chain slack: 48–58 mm (1.9–2.3 in)
Replace ●
COOLING SYSTEM Check coolant level and leakage ●●
Check radiator cap operation ●
Replace coolant ●Every two years
Inspect hoses ●
OUTSIDE NUTS AND BOLTS Retighten ●● Refer to "STARTING AND BREAK-
IN" section in the CHAPTER 1.
AIR FILTER Clean and lubricate ●● Use foam air-filter oil or equivalent oil.
Replace ●
OIL FILTER Replace ●●
ENGINE GUARD Replace ●Breakage
FRAME Clean and inspect ●●
FUEL TANK, COCK Clean and inspect ●●
BRAKES Adjust lever position and pedal
height ●●
Lubricate pivot point ●●
Check brake disc surface ●●
Check fluid level and leakage ●●
Retighten brake disc bolts, cali-
per bolts, master cylinder bolts
and union bolts ●●
Replace pads ●
Replace brake fluid ●Every one year
Item
After
break- in Every
race
Every third
(or 500 km) Every
fifth (or
1,000 km)
As re-
quired Remarks

3-7
PRE-OPERATION INSPECTION AND MAINTENANCE
PRE-OPERATION INSPECTION AND MAINTENANCE
Before riding for break-in operation or practice, make sure the machine is in good operating condition.
Before using this machine, check the following points.
GENERAL INSPECTION AND MAINTENANCEItem RoutinePage
Coolant Check that coolant is filled up to the radiator cap. Check the cool-
ing system for leakage. P.3-11 – 12
Fuel Check that a fresh gasoline is filled in the fuel tank. Check the fuel
line for leakage.
P.1-18
Engine oil Check that the oil level is corre
ct. Check the crankcase and oil
line for leakage. P.3-14 – 15
Gear shifter and clutch Check that gears can be shifted correctly in order and that the
clutch operates smoothly. P.3-12 – 13
Throttle grip/Housing Check that the throttle grip operation and free play are correctly
adjusted. Lubricate the throttle grip and housing, if necessary.
P.3-13
Brakes Check the play of front brake and ef fect of front and rear brake. P.3-19 – 22
Drive chain Check drive chain slack and alignment. Check that the drive chain
is lubricated properly. P.3-22 – 23
Wheels Check for excessive wear and ti
re pressure. Check for loose
spokes and have no excessive play. P.3-26 – 27
Steering Check that the handlebar can be turned smoothly and have no ex-
cessive play.
P.3-27
Front forks and rear shock
absorber Check that they operate smoothly and there is no oil leakage.
P.3-23 – 26
Cables (wires) Check that the clutch and throttle cables move smoothly. Check
that they are not caught when the handlebars are turned or when
the front forks travel up and down. —
Exhaust pipe Check that the exhaust pipe is tightly mount ed and has no cracks. P.3-10 – 11
Rear wheel sprocket Check that the rear wheel sprocket tightening bolt is not loose. P.3-22
Lubrication Check for smooth operation. Lubricate if necessary. P.3-28
Bolts and nuts Check the chassis and engine for loose bolts and nuts. P.1-20
Lead connectors Check that the AC magneto, CDI unit, and ignition coil are con-
nected tightly. P.1-7
Settings Is the machine set suitably for the condition of the course and
weather or by taking into account the results of test runs before
riding? Are inspection and maintenance completely done? P.4-1 – 10

3-12
ENGINE
• Do not mix more than one type of ethylene glycol antifreeze con-
taining corrosion inhibitors for
aluminum engine.
• Do not use water containing im-
purities or oil.
Handling notes of coolant:
The coolant is harmful so it should be
handled with special care.
• When coolant splashes to your eye.
Thoroughly wash your eye with
water and see your doctor.
• When coolant splashes to your clothes.
Quickly wash it away with water
and then with soap.
• When coolant is swallowed. Quickly make him vomit and take
him to a doctor.
9. Install:• Radiator cap
Start the engine and warm it up
for a several minutes.
10. Check:
• Coolant levelCoolant level low →Add coolant.
CHECKING THE RADIATOR CAP
1. Inspect: • Seal (radiator cap) "1"
• Valve and valve seat "2"Crack/damage →Replace.
Exist fur deposits "3" →Clean or
replace. CHECKING THE RADIATOR CAP
OPENING PRESSURE
1. Attach:
• Radiator cap tester "1" and adapt-
er "2"
Apply water on the radiator cap seal.
3. Radiator cap
2. Apply the specified pressure.
3. Inspect:
•PressureImpossible to maintain the speci-
fied pressure for 10 seconds →
Replace.
CHECKING THE COOLING
SYSTEM
1. Inspect: • Coolant level
2. Attach: • Radiator cap tester "1" and adapt-
er "2"
3. Apply the specified pressure.
• Do not apply pressure more than specified pressure.
• Radiator should be filled fully.
4. Inspect: • PressureImpossible to maintain the speci-
fied pressure for 10 seconds →
Repair.
•Radiator "1"
• Radiator hose joint "2"
Coolant leakage →Repair or re-
place.
• Radiator hose "3"
Swelling →Replace.
ADJUSTING THE CLUTCH CABLE
FREE PLAY
1. Check: • Clutch lever free play "a"Out of specification →Adjust.
2. Adjust: • Clutch lever free play
Clutch lever free play adjustment
steps:
a. Loosen the locknuts "1".
b. Adjust the free play by changing their tightening position.
c. Tighten the locknuts.
• Make minute adjustment on the le- ver side using the adjuster "2".
• After adjustment, check proper op- eration of clutch lever.
Radiator cap tester: YU-24460-01/90890-
01325
Radiator cap tester
adapter: YU-33984/90890-01352
Radiator cap opening
pressure: 110 kPa (1.1 kg/cm
2,
15.6 psi)
Radiator cap tester: YU-24460-01/90890-
01325
Radiator cap tester
adapter: YU-33984/90890-01352
Standard pressure: 180 kPa (1.8 kg/cm
2,
25.6 psi)
Clutch lever free play "a"
: 8–13 mm (0.31–0.51 in)
Locknut: 7 Nm (0.7 m•kg, 5.1
ft•lb)

3-14
ENGINE
4. Clean:• Air filter elementClean them with solvent.
After cleaning, remo ve the remaining
solvent by squeezing the element.
• Do not twist the element when squeezing the element.
• Leaving too much of solvent in
the element may result in poor
starting.
5. Inspect:• Air filter elementDamage →Replace.
6. Apply: • Foam-air-filter oil or equivalent oil to the element
• Squeeze out the excess oil. Ele-
ment should be wet but not drip-
ping.
• Wipe off the oil left on the element
surface using a clean dry cloth. (Ex-
cess oil in the element may ad-
versely affect engine starting.)
7. Install:• Air filter guide "1"
• Align the projection "a" on filter
guide with the hole "b" in air filter el-
ement.
• Apply the lithium soap base grease
on the matching surface "c" on air
filter element.
8. Install:• Air filter element "1"
Align the projection "a" on filter guide
with the hole "b" in air filter case.
9. Hook:• Binder "1"
Hook the binder "1" so that it contacts
the filter guide projections "a".
CHECKING THE ENGINE OIL
LEVEL
1. Start the engine, warm it up for several minutes, and then turn off
the engine and wait for five min-
utes.
2. Place the machine on a level
place and hold it up on upright po-
sition by placing the suitable
stand under the engine.
3. Inspect: • Oil levelOil should be up to the full level in
the check window "1".
Level check window is not full. →
Add 0.2 L (0.18 Imp qt, 0.21 US
qt) of oil.
• Engine oil also lubricates the
clutch and the wrong oil types or
additives could cause clutch
slippage. Therefore, do not add
any chemical additives or use en-
gine oils with a grade of CD or
higher and do not use oils la-
beled "ENERGY CONSERVING
II".
• Do not allow fore ign materials to
enter the crankcase.
4. Install: • Oil tank cap
5. Start the engine and let it warm up for several minutes.
6. Turn off the engine and inspect
the oil level once again.
Wait a few minutes until the oil settles
before inspecting the oil level.
CHANGING THE ENGINE OIL
1. Start the engine and warm it up for several minutes, and then turn
off the engine and wait for five
minute.
2. Place the machine on a level place and hold it on upright posi-
tion by placing the suitable stand
under the engine.
3. Place a suitable container under
the engine.
4. Remove: • Engine guard "1"
• Bolt (oil tank) "2"
• Washer "3"
• Oil filler cap "4"
• Oil tank drain bolt "5"
• Crankcase oil drain bolt "6"
• Oil filter element drain bolt "7"
Drain the crankcase and oil tank
of its oil.
Recommended brand:
YAMALUBE
Recommended engine
oil type SAE 10W-30, SAE 10W-
40, SAE 10W-50, SAE
15W-40, SAE 20W-40 or
SAE 20W-50
Recommended engine
oil grade API service SG type or
higher, JASO standard
MA