2004 YAMAHA YFM50S wheel

8-47
EBU14370
Rear brake lever adjustment
Brake lever free play adjustment
1. Loosen the brake cable locknut.
2. Turn the adjusting bolt at the brake lever
until brake lever free play is 5–8 mm.
3. Tighten the locknut.
NOTE:
If specified free play cannot be obtained, tighten
the brake cable adjusting nut at the rear wheel
hub until brake lever free play is 5–8 mm.
wqa
1
1. Locknut 2. Adjusting bolt1. Contre-écrou 2. Boulon de réglage1. Contratuerca 2. Perno de ajustea. Free playa. Jeua. Juego
1. Brake cable adjusting nut
1. Ecrou de réglage du câble de frein1. Tuerca de ajuste del cable de freno
5YF-9-60 8 4/24/03 6:35 PM Page 8-47

1. Wheel nut (×4) 2. Wheel nut (×3)1. Ecrou de roue (×4)2. Ecrou de roue (×3)1. Tueroa de rueda (×4) 2. Tueroa de rueda (×3)
8-55
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.
EBU07390
Wheel installation
When installing the wheel, reverse the removal
procedure.
NOTE:
The arrow mark on the tire must point toward
the rotating direction of the wheel.
Tighten the wheel nuts to the specified torque.
Wheel nut torque:
Front: 28 Nm (2.8 m0kgf)
Rear: 28 Nm (2.8 m0kgf)
1
12
FrontAvantDelantera
RearArrièreTrasera
5YF-9-60 8 4/24/03 6:35 PM Page 8-55

9-1
EBU00420
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
prevent 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 degreaser to the wheel axles.
5YF-9-60 9~ 4/24/03 6:34 PM Page 298

9-3
3. Rinse the dirt and degreaser off with a gar-
den hose. Use only enough pressure to do
the job.
cC
Excessive water pressure may cause water
seepage and deterioration of wheel bearings,
brakes, transmission seals and electrical
devices. Many expensive repair bills have
resulted from improper high pressure deter-
gent 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.
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9-9
4. Block up the frame to raise all wheels off
the ground.
5. Tie a plastic bag over the exhaust pipe out-
let to prevent moisture from entering.
6. If storing in a humid or salt-air atmosphere,
coat all exposed metal surfaces with a light
film of oil. Do not apply oil to any rubber
parts or the seat cover.
7. Remove the battery and charge it. Store it
in a dry place and recharge it once a
month. Do not store the battery in an
excessively warm or cold place (less than
0°C or more than 30°C).
NOTE:
Make any necessary repairs before storing the
machine.
5YF-9-60 9~ 4/24/03 6:34 PM Page 306

10-1
Model YFM50
Dimensions:
Overall length 1,537 mm
Overall width 825 mm
Overall height 915 mm
Seat height 618 mm
Wheelbase 1,030 mm
Ground clearance 70 mm
Minimum turning radius 2,300 mm
Basic weight:
With oil and full fuel tank 115 kg
Engine:
Type Air-cooled 4-stroke, SOHC
Cylinder arrangement Single cylinder, forward-inclined
Displacement 49.0 cm
3
Bore × Stroke 39.0 ×41.4 mm
Compression ratio 10.0 : 1
Starting system Electric starter
Lubrication system Wet sump
EBU00428
SPECIFICATIONS
5YF-9-60 9~ 4/24/03 6:34 PM Page 308

10-5
Model YFM50
Brake:
Front brake type Drum brake
Operation Right hand operation
Rear brake type Drum brake
Operation Left hand operation
Suspension:
Front Leading arm
Rear Swingarm
Shock absorber:
Front Coil spring/Oil damper
Rear Coil spring/Oil damper
Wheel travel:
Front wheel travel 57 mm
Rear wheel travel 56 mm
Electrical:
Ignition system C.D.I.
Charging system A.C. magneto
Battery type/voltage, capacity 12N7D-3B/12V, 7Ah
Indicator light voltage, wattage ×quantity:
Neutral 12V, 1.7W ×1
Fuse: 5A
5YF-9-60 9~ 4/24/03 6:34 PM Page 312