2005 YAMAHA BRUIN 250 wheel

8-55 1. Brake pad (× 2) a. Brake pad thickness
1. Plaquette de frein (× 2) a.Épaisseur de plaquette de frein
1. Pastilla del freno (× 2) a. Espesor de la pastilla del freno
EBU03050
Select lever safety system cable adjustment
The select lever safety system cable stretches
with use, resulting in improper function. To prevent
this, the cable must be adjusted regularly. This ad-
justment, however, should be left to a Yamaha
dealer.
EBU13770
Front brake pad check
Check the brake pads for damage and wear. If a
brake pad thickness is less than 1.0 mm, have a
Yamaha dealer replace the pads as a set.NOTE:_ The wheels need to be removed to check the
brake pads. (See pages 8-81–8-83 for removal
and installation procedures.) _
U1P060.book Page 55 Monday, August 2, 2004 12:19 PM

8-81 1. Grease nipple
1. Graisseur
1. Boquilla de engrase
EBU14060
Steering shaft lubrication
Lubricate the pivot point with a grease gun.
EBU01112
Wheel removal
1. Loosen the wheel nuts.
2. Elevate the ATV and place a suitable stand
under the frame.
3. Remove the nuts from the wheel.
4. Remove the wheel.Recommended lubricant:
Lithium-soap-based grease
(all purpose grease)
U1P060.book Page 81 Monday, August 2, 2004 12:19 PM

8-83 1. Arrow mark
1. Flèche
1. Flecha
1. Tapered nut
1.Écrou conique
1. Tuerca cónica
EBU11211
Wheel installation
1. Install the wheel and the nuts.NOTE:_

The arrow mark on the tire must point to-
ward the rotating direction of the wheel.


Tapered nuts are used for both the front and
rear wheels. Install the nut with its tapered
side towards the wheel.
_2. Lower the ATV so that the wheel is on the
ground.
3. Tighten the wheel nuts to the specified
torque.
Wheel nut torque:
Front: 55 Nm (5.5 m·kgf)
Rear: 55 Nm (5.5 m·kgf)
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9-1
EBU00420
1-CLEANING AND STORAGE
A. CLEANING
Frequent, thorough cleaning of your machine will
not only enhance its appearance but will improve
its general performance and extend the useful life
of many components.
1. Before cleaning the machine:
a. Block off the end of the exhaust pipe to pre-
vent 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, ap-
ply degreaser with a paint brush. Do not ap-
ply degreaser to the wheel axles.
3. Rinse the dirt and degreaser off with a garden
hose. Use only enough pressure to do the
job.
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9-3
CAUTION:
Excessive water pressure may cause water
seepage and deterioration of wheel bearings,
brakes, transmission seals and electrical de-
vices. Many expensive repair bills have result-
ed from improper high pressure detergent
applications such as those available in coin-
operated car washers.4. Once the majority of the dirt has been hosed
off, wash all surfaces with warm water and
mild, detergent-type soap. An old toothbrush
or bottle brush is handy for hard-to-get-at
places.
5. Rinse the machine off immediately with clean
water and dry all surfaces with a chamois,
clean towel or soft absorbent cloth.
6. Clean the seat with a vinyl upholstery cleaner
to keep the cover pliable and glossy.
U1P060.book Page 3 Monday, August 2, 2004 12:19 PM

9-7
EBU00427
B. STORAGE
Long term storage (60 days or more) of your ma-
chine will require some preventive procedures to
guard against deterioration. After thoroughly
cleaning the machine, prepare for storage as fol-
lows:
1. Fill the fuel tank with fresh fuel and add fuel
stabilizer (if available).NOTE:Use of fuel stabilizer eliminates the need to drain
the fuel system. Consult a Yamaha dealer if the
fuel system is to be drained instead.2. Remove the spark plug, pour about one ta-
blespoon of SAE 10W30 or 20W40 motor oil
in the spark plug hole and reinstall the spark
plug. Ground the spark plug wire and turn the
engine over several times to coat the cylinder
wall with oil.
3. Lubricate all control cables.
4. Block up the frame to raise all wheels off the
ground.
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10-1
EBU00428
SPECIFICATIONS
Model YFM250B
Dimension:
Overall length 1,916 mm
Overall width 1,038 mm
Overall height 1,118 mm
Seat height 772 mm
Wheelbase 1,170 mm
Minimum ground clearance 150 mm
Minimum turning radius 2,900 mm
Basic weight:
With oil and full fuel tank 216.0 kg
Noise and vibration level:
Noise level (77/311/EEC) (For Europe) 77.5 dB (A)
Vibration on seat (EN1032, ISO5008)
(For Europe) Will not exceed 0.5 (m/s
2)
Vibration on handlebar (EN1032, ISO5008)
(For Europe) Will not exceed 2.5 (m/s2)
Engine:
Type Air-cooled 4-stroke, SOHC
Cylinder arrangement Forward-inclined single cylinder
Displacement 229.6 cm
3
Bore
× stroke 71.0
× 58.0 mm
Compression ratio 8.70:1
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10-5
Brake:
Front brake type Dual disk brake
Operation Right hand operation
Rear brake type Drum brake
Operation Left hand and right foot operation
Suspension:
Fr on t S tr ut
Rear Swingarm (monocross)
Shock absorber:
Front Coil spring / Oil damper
Rear Coil spring / Oil damper
Wheel travel:
Front 125.0 mm
Rear 135.0 mm
Electrical:
Ignition system DC. CDI
Generator system A.C. magneto
Battery type / voltage, capacity CB14A-A2/12 V 14.0 Ah
Headlight type: IncandescenceModel YFM250B
U1P060.book Page 5 Monday, August 2, 2004 12:19 PM