2003 YAMAHA YFM350R brake

8-55 1. Locknut 2. Adjusting bolt
1. Contre-écrou 2. Boulon de réglage
1. Contratuerca 2. Perno de ajuste
1. Locknut 2. Adjusting bolt
1. Contre-écrou 2. Boulon de réglage
1. Contratuerca 2. Perno de ajuste
4. Tighten the locknut at the clutch lever.
5. Screw in the adjusting bolt at the rear brake
caliper by hand until it feels tight, then screw it
out 1/8 turn. Tighten the locknut to the speci-
fied torque.CAUTION:_ When tightening the locknut, hold the adjust-
ing bolt with a wrench so that the adjusting
bolt does not turn together with the locknut. _
WARNING
_ Operating with improperly adjusted brakes
could cause the brakes to malfunction, result-
ing in reduced braking performance. This
could increase the chance of a collision or ac-
cident. After adjusting the parking brake, block
the rear of the machine off the ground and spin
the rear wheels. Check to make sure there is
no brake drag. If brake drag is noticed, perform
the adjustment again. _
Tightening torque:
Locknut:
16 Nm (1.6 m·kgf)
U5NF62.book Page 55 Wednesday, May 8, 2002 1:40 PM

8-57 1. Rear brake light switch
2. Adjusting nut
1. Contacteur de feu stop
2.Écrou de réglage
1. Interruptor de la luz de freno trasero
2. Tuerca de ajuste
EBU00833
Adjusting the rear brake light switch
The rear brake light switch, which is activated by
the brake pedal and brake lever, is properly adjust-
ed when the brake light comes on just before brak-
ing takes effect. If necessary, adjust the brake light
switch as follows.
Turn the adjusting nut while holding the rear brake
light switch in place. To make the brake light come
on earlier, turn the adjusting nut in direction
a. To
make the brake light come on later, turn the adjust-
ing nut in direction
b.
U5NF62.book Page 57 Wednesday, May 8, 2002 1:40 PM

8-67
EBU00570
Cable inspection and lubrication
WARNING
Inspect cables frequently and replace if dam-
aged. Corrosion can result when the outer cov-
ering of control cables becomes damaged.
Cables can also become frayed or kinked. Op-
eration of controls could be restricted, which
could cause an accident or injury.Lubricate the inner cables and the cable ends. If
the cables do not operate smoothly, ask a Yamaha
dealer to replace them.
EBU00737
Brake and shift pedal/brake and clutch lever lu-
brication
Lubricate the pivoting parts of each lever and pedal.Recommended lubricant:
Engine oil
Recommended lubricant:
Lithium-soap-based grease
(all-purpose grease)
U5NF62.book Page 67 Wednesday, May 8, 2002 1:40 PM

8-97 1. Tail/brake light bulb holder
1. Fixation d’ampoule de feu arrière/stop
1. Portalámparas de la luz de freno/piloto trasero
1. Tail/brake light bulb holder 2. Bulb
1. Fixation d’ampoule de feu arrière/stop 2. Ampoule
1. Portalámparas de la luz de freno/piloto trasero 2. Bombillas
EBU00861
Tail/brake light bulb replacement
1. Remove the bulb holder (together with the
bulb) by turning it counterclockwise.
2. Remove the defective bulb from the bulb
holder by pushing it inward and turning it
counterclockwise.
3. Install a new bulb in the bulb holder by push-
ing it inward and turning it clockwise.
4. Install the bulb holder (together with the bulb)
by turning it clockwise.
U5NF62.book Page 97 Wednesday, May 8, 2002 1:40 PM

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. Dry the chain and lubricate it to prevent rust.
7. Clean the seat with a vinyl upholstery cleaner
to keep the cover pliable and glossy.
U5NF62.book Page 3 Wednesday, May 8, 2002 1:40 PM

9-5
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, start the engine
and let it idle for several minutes.
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.
U5NF62.book Page 5 Wednesday, May 8, 2002 1:40 PM

10-4
Gear ratio:
1st
2nd
3rd
4th
5th
6th
Reverse36/16
× 20/27
× 29/18 (2.685)
33/20
× 20/27
× 29/18 (1.969)
29/23
× 20/27
× 29/18 (1.504)
27/26
× 20/27
× 29/18 (1.239)
25/28
× 20/27
× 29/18 (1.065)
23/29
× 20/27
× 29/18 (0.946)
33/16
× 33/10 (6.806)
Chassis:
Frame type
Caster angle
TrailSteel tube
7
°30 mm
Tire:
Type
Size: Front
Size: RearTubeless
AT22
× 7-10
AT22
× 10-9
Brake:
Front brake type
Operation
Rear brake type
OperationDual disc brake
Right hand operation
Single disc brake
Right foot operation
Suspension:
Front
RearDouble wishbone
Swingarm (link suspension) MODEL YFM350X
U5NF62.book Page 4 Wednesday, May 8, 2002 1:40 PM

10-5
Shock absorber:
Front
RearCoil spring / oil damper
Coil spring / gas-oil damper
Wheel travel:
Front
Rear200 mm
200 mm
Electrical:
Ignition system
Generator system
Battery type/voltage, capacityD.C. C.D.I.
A.C. magneto
GM12CZ-4A-2/12V, 12Ah
Headlight type: Krypton bulb
Bulb voltage, wattage
× quantity:
Headlight
Tail/brake light
Indicator light:
Neutral
Reverse12V, 30W/30W
× 2
12V, 5W/21W
× 1
12V, 3.4W
× 1
12V, 3.4W
× 1
Fuse: 15AMODEL YFM350X
U5NF62.book Page 5 Wednesday, May 8, 2002 1:40 PM