oil type YAMAHA WR 250F 2014 Owners Manual

1-20
TORQUE-CHECK POINTS
TORQUE-CHECK POINTS
Concerning the tightening torque, refer to "TIGHTENING TORQUES" section in the CHAPTER 2.
Frame construction Frame to rear frame
Combined seat and fuel tank Fuel tank to frame
Exhaust system Silencer to rear frame
Engine mounting Frame to engine
Engine bracket to engine
Engine bracket to frame
Steering Steering stem to handlebar Steering stem to frame
Steering stem to upper bracket
Upper bracket to handlebar
Suspension Front Steering stem to front fork Front fork to upper bracket
Front fork to lower bracket
Rear For link type Assembly of links
Link to frame
Link to rear shock absorber
Link to swingarm
Installation of rear shock absorber Rear shock absorber to frame
Installation of swingarm Tightening of pivot shaft
Wheel Installation of wheel Front Tightening of wheel axle
Tightening of axle holder
Rear Tightening of wheel axle
Wheel to rear wheel sprocket
Brake Front Brake caliper to front fork
Brake disc to wheel
Tightening of union bolt
Brake master cylinder to handlebar
Tightening of bleed screw
Tightening of brake hose holder
Rear Brake pedal to frame
Brake disc to wheel
Tightening of union bolt
Brake master cylinder to frame
Tightening of bleed screw
Tightening of brake hose holder
Fuel system Fuel tank to fuel cock
Lubrication system Tightening of oil hose clamp

2-1
GENERAL SPECIFICATIONS
SPECIFICATIONS
GENERAL SPECIFICATIONS
Model name: WR250FE (AUS, NZ)
WR250F (EUROPE, ZA)
Model code number: 1HCD (EUROPE)
1HCE (AUS, NZ, ZA)
Dimensions: ZA AUS, NZ EUROPE
Overall length 2,165 mm (85.2
in)2,175 mm (85.6
in)2,185 mm (86.0
in)
Overall width 825 mm (32.5 in)←←
Overall height 1,300 mm (51.2
in)1,305 mm (51.4
in)←
Seat height 980 mm (38.6 in) 990 mm (39.0 in)←
Wheelbase 1,480 mm (58.3
in)←1,485 mm (58.5
in)
Minimum ground clearance 365 mm (14.37 in)←←
Weight: ZA EUROPE, AUS, NZ
Curb weight
116 kg (256 lb)117 kg (258 lb)
Engine:
Engine type Liquid cooled 4-stroke, DOHC
Cylinder arrangement Single cylinder
Displacement 250 cm
3 (8.80 Imp oz, 8.45 US oz)
Bore × stroke 77.0 × 53.6 mm (3.03 × 2.11 in)
Compression ratio 12.5 : 1
Starting system Kick and electric starter
Lubrication system: Dry sump
Oil type or grade:
Engine oil Recommended brand: YAMALUBE
SAE 10W-30, SAE 10W-40, SAE 10W-50,
SAE 15W-40, SAE 20W-40 or SAE 20W-50
API service SG type or higher,
JASO standard MA
Oil capacity:
Engine oil
Periodic oil change 1.10 L (0.97 Imp qt, 1.16 US qt)
With oil filter replacement 1.20 L (1.06 Imp qt, 1.27 US qt)
Total amount 1.40 L (1.23 Imp qt, 1.48 US qt)
Coolant capacity (including all routes): 0.99 L (0.87 Imp qt, 1.05 US qt)
Air filter: Wet type element

2-3
MAINTENANCE SPECIFICATIONS
MAINTENANCE SPECIFICATIONS
ENGINEShock absorber:
Front shock absorber Coil spring/oil damper
Rear shock absorber Coil spring/gas, oil damper
Wheel travel:
Front wheel travel 300 mm (11.81 in)
Rear wheel travel 310 mm (12.20 in)
Electrical:
Ignition system CDI
Generator system AC magneto
Battery type YTZ7S (F)
Battery voltage/capacity 12V/6 AH
Specific gravity 1.31
Headlight type: Quartz bulb (halogen)
Bulb wattage × quantity:
Headlight 12 V 35/36.5 W × 1
Taillight 12 V 1.6/0.3 W × 1
Item Standard Limit
Cylinder head:
Warp limit ---- 0.05 mm (0.002
in)
Cylinder:
Bore size 77.000–77.010 mm (3.0315–3.0319 in) ----
Out of round limit ---- 0.05 mm (0.002
in)
Camshaft:
Drive method Chain drive (Left) ----
Camshaft cap inside diameter 22.000–22.021 mm (0.8661–0.8670 in) ----
Camshaft outside diameter 21.959–21.972 mm (0.8645–0.8650 in) ----
Shaft-to-cap clearance 0.028–0.062 mm (0.0011–0.0024 in) 0.08 mm (0.003
in)
Cam dimensions

2-7
MAINTENANCE SPECIFICATIONS
Oil ring:
Dimensions (B × T) 1.50 × 2.25 mm (0.06 × 0.09 in) ----
End gap (installed) 0.10–0.40 mm (0.0039–0.0157 in) ----
Crankshaft:
Crank width "A" 55.95–56.00 mm (2.203–2.205 in) ----
Runout limit "C" 0.030 mm (0.0012 in) 0.050 mm
(0.002 in)
Big end side clearance "D" 0.150–0.450 mm (0.0059–0.0177 in) 0.500 mm (0.02
in)
Small end free play "F" 0.4–1.0 mm (0.016–0.039 in) 2.0 mm (0.08
in)
Clutch:
Friction plate thickness 2.90–3.10 mm (0.114–0.122 in) 2.70 mm (0.106
in)
Quantity 9 ----
Clutch plate thickness 1.10–1.30 mm (0.043–0.051 in) ----
Quantity 8 ----
Warp limit ---- 0.10 mm (0.004
in)
Clutch spring free length 37.00 mm (1.46 in) 36.00 mm (1.42
in)
Quantity 5 ----
Clutch housing thrust clearance 0.05–0.30 mm (0.002–0.012 in) ----
Clutch housing radial clearance 0.01–0.04 mm (0.0004–0.0017 in) ----
Clutch release method Inner push, cam push ----
Shifter:
Shifter type Cam drum and guide bar ----
Guide bar bending limit ---- 0.050 mm
(0.0020 in)
Kickstarter:
Type Kick and ratchet type ----Item Standard Limit

2-8
MAINTENANCE SPECIFICATIONS
CHASSISCarburetor: ZA, AUS, NZ EUROPE
Type/manufacturer FCR-MX37/KEIHIN←----
I. D. mark 5UME E0 5UML L0 ----
Main jet (M.J) #170 #160 ----
Main air jet (M.A.J) #115←----
Jet needle (J.N) NJRU NNGU ----
Cutaway (C.A) 1.5←----
Pilot jet (P.J) #42 #45 ----
Pilot air jet (P.A.J) #70←----
Pilot outlet (P.O) ø0.9←----
Bypass (B.P) ø1.0←----
Valve seat size (V.S) ø3.8←----
Starter jet (G.S) #68←----
Leak jet (Acc.P) #70←----
Float height (F.H) 8.0 mm (0.31 in)←----
Engine idle speed 1,750–1,950 r/min←----
Intake vacuum 31.0–37.0 kPa
(233–278 mmHg,
9.2–10.9 inHg)←----
Hot starter lever free play 3–6 mm (0.12–0.24
in)←----
Lubrication system:
Oil filter type Paper type ----
Oil pump type Trochoid type ----
Tip clearance 0.12 mm or less (0.0047 in or less) 0.20 mm (0.008
in)
Side clearance 0.090–0.170 mm (0.0035–0.0067 in) 0.24 mm
(0.0094 in)
Housing and rotor clearance 0.03–0.10 mm (0.0012–0.0039 in) 0.17 mm
(0.0067 in)
Cooling:
Radiator core size
Width 120.2 mm (4.73 in) ----
Height 240.0 mm (9.45 in) ----
Thickness 22.0 mm (0.87 in) ----
Radiator cap opening pressure 95.0–125.0 kPa (0.95–1.25 kg/cm
2, 13.8–
18.1 psi)----
Radiator capacity (total) 0.54 L (0.48 Imp qt, 0.57 US qt) ----
Water pump
Type Single-suction centrifugal pump ----Item Standard Limit
Item Standard Limit
Steering system:
Steering bearing typeTaper roller bearing ----

2-9
MAINTENANCE SPECIFICATIONS
Front suspension:
Front fork travel 300.0 mm (11.81 in) ----
Fork spring free length 460.0 mm (18.11 in) 455.0 mm
(17.91 in)
Spring rate, STD K = 4.40 N/mm (0.45 kg/mm, 25.12 lb/in) ----
Optional spring/spacer Yes ----
Oil capacity 648.0 cm
3 (22.85 lmp oz, 21.91 US oz) ----
Oil level 132.0 mm (5.20 in) ----
(From top of outer tube with inner
tube and damper rod fully compressed without
spring.)95.0–150.0 mm (3.74–5.91 in) ----
Oil grade Suspension oil "S1" ----
Inner tube outer diameter 48 mm (1.89 in) ----
Front fork top end 5 mm (0.20 in) ----
Rear suspension: AUS, NZ, ZA EUROPE
Shock absorber travel 130.0 mm (5.12 in)←----
Spring free length 260.0 mm (10.24 in)←----
Fitting length 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 = 52.00 N/mm (5.30
kg/mm, 296.92 lb/in)←----
Optional spring Yes←----
Enclosed gas pressure 1,000 kPa (10.0 kg/cm
2,
142.2 psi)←----
Swingarm:
Swingarm free play limit
End ---- 1.0 mm (0.04
in)
Wheel: 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/material 18 × 1.85/Aluminum18 × 2.15/Aluminum ----
Rim runout limit:
Radial ---- ---- 2.0 mm (0.08
in)
Lateral ---- ---- 2.0 mm (0.08
in)
Drive chain:
Type/manufacturer DID520VM2/DAIDO ----
Number of links 113 links + joint ----
Chain slack 48.0–58.0 mm (1.89–2.28 in) ----
Chain length (15 links) ---- 239.3 mm
(9.42 in) Item Standard Limit

2-10
MAINTENANCE SPECIFICATIONS
ELECTRICALFront disc brake:
Disc outside dia.×Thickness 250 × 3.0 mm (9.84 × 0.12 in) 250 × 2.5 mm
(9.84 × 0.10 in)
Pad thickness 4.4 mm (0.17 in) 1.0 mm (0.04
in)
Master cylinder inside dia. 11.00 mm (0.43 in) ----
Caliper cylinder inside dia.27.00 mm (1.06 in) × 2 ----
Brake fluid type DOT #4 ----
Rear disc brake:
Disc outside dia.×Thickness 245 × 4.0 mm (9.65 × 0.16 in) 245 × 3.5 mm
(9.65 × 0.14 in)
Deflection limit ---- 0.15 mm
(0.006 in)
Pad thickness 6.4 mm (0.25 in) 1.0 mm (0.04
in)
Master cylinder inside dia. 11.0 mm (0.43 in) ----
Caliper cylinder inside dia.25.40 mm (1.00 in) × 1 ----
Brake fluid type DOT #4 ----
Brake lever and brake pedal:
Brake lever position 95 mm (3.74 in) ----
Brake pedal height (vertical height above footrest
top)10.0 mm (0.39 in) ----
Clutch lever free play (lever end) 8.0–13.0 mm (0.31–0.51 in) ----
Throttle grip free play 3.0–5.0 mm (0.12–0.20 in) ---- Item Standard Limit
Item Standard Limit
Ignition system:
Advancer type Electrical ----
CDI: AUS, NZ, ZA EUROPE
Pickup coil resistance (color) 248–372 Ωat 20 °C (68
°F) (White–Red)←----
CDI unit-model/manufacturer5UM-F1/YAMAHA 5UM-L1/YAMAHA ----
Ignition coil:
Model/manufacturer 5UL-10/DENSO ----
Minimum spark gap 6.0 mm (0.24 in) ----
Primary coil resistance 0.07–0.10 Ωat 20 °C (68 °F) ----
Secondary coil resistance 4.56–6.84 kΩat 20 °C (68 °F) ----
Charging system:
System type AC magneto ----
Model (stator)/manufacturer 5UM 30/YAMAHA ----
Normal output 14.0 V/120 W at 5,000 r/min ----
Charging coil resistance (color) 0.28–0.43 Ω at 20 °C (68 °F) (White–Ground) ----
Lighting coil resistance (color) 0.22–0.33 Ω at 20 °C (68 °F) (Yellow–Ground) ----

2-11
MAINTENANCE SPECIFICATIONS
Rectifier/regulator:
Regulator type Semiconductor short circuit ----
Model/manufacture SH770AA/SHINDENGEN ----
Regulated voltage (AC) 12.5–13.5 V ----
Regulated voltage (DC) 14.0–15.0 V ----
Rectifier capacity (AC) 12.0 A ----
Rectifier capacity (DC) 8.0 A ----
Electric starting system:
Type Constant mesh ----
Starter motor:
Model/manufacturer 5UM01/YAMAHA ----
Operation voltage 12.0 V ----
Output 0.35 kW ----
Armature coil resistance 0.0189–0.0231 Ω at 20 °C (68 °F) ----
Brush overall length 7.0 mm (0.28 in) 3.50 mm (0.14
in)
Brush quantity 2 pcs. ----
Spring force 3.92–5.88 N (400–600 g, 14.11–21.17 oz) ----
Commutator diameter 17.6 mm (0.69 in) 16.6 mm (0.65
in)
Mica undercut (depth) 1.50 mm (0.06 in) ----
Starter relay:
Model/manufacturer RC19-042/MITSUBA ----
Amperage rating 180.0 A ----
Coil winding resistance 4.18–4.62 Ω at 20 °C (68 °F) ----
Starting circuit cut-off relay:
Model/manufacturer ACM33221 M38/MATSUSHITA ----
Coil winding resistance 75.6–92.5 Ω at 20 °C (68 °F) ----
Fuse (amperage×quantity):
Main fuse 10.0 A × 1 ----
Reserve fuse 10.0 A × 1 ----Item Standard Limit

3-10
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 level
Coolant 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:
•Pressure
Impossible 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:
• Pressure
Impossible 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 LEVER
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-A/90890-
01325
Radiator cap tester
adapter:
YU-33984/90890-01352
Radiator cap opening
pressure:
95.0–125.0 kPa (0.95–
1.25 kg/cm
2, 13.8–18.1
psi)
Radiator cap tester:
YU-24460-A/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"
:
8.0–13.0 mm (0.31–0.51
in)
Locknut:
7 Nm (0.7 m•kg, 5.1
ft•lb)

3-12
ENGINE
4. Clean:
• Air filter element
Clean them with solvent.
After cleaning, remove 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 element
Damage→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 level
Oil 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 foreign 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