Page 146 of 376
6-11 1. Drive select lever
2. Lock release button
a. Foward
b. Reverse
1. Levier de présélection
2. Bouton de déblocage
a. Marche avant
b. Marche arrière
1. Palanca de selección de gama
2. Botón de desbloqueo
a. Marcha adelante
b. Marcha atrás
EBU00186
Drive select lever operation and reverse
drivingCAUTION:
Before shifting, stop the machine and return
the throttle lever to its closed position. Other-
wise the transmission may be damaged.NOTE:When shifting into reverse, the transmission must
be in first gear.1. Bring the machine to a complete stop and re-
turn the throttle lever to the closed position.
2. Apply the rear brake pedal.
3. Shift the transmission into first gear.
4. While pulling the lock release button, move
the drive select lever toward the rear until it
completely stops.NOTE:When in reverse, the reverse indicator light should
be on. If the light does not come on, ask a Yamaha
dealer to inspect the machine.
U4XE65.book Page 11 Tuesday, May 6, 2003 1:38 PM
Page 259 of 376

8-8 * It is recommended that these items be serviced by a Yamaha dealer.
NOTE:
Recommended brake fluid: DOT 4
Brake fluid replacement:
When disassembling the master cylinder or caliper, replace the brake fluid. Normally check the
brake fluid level and add fluid as required.
On the inner parts of the master cylinder and caliper, replace the oil seals every two years.
Replace the brake hoses every four years, or if cracked or damaged.
Wheels*Check balance/damage/runout.
Repair if necessary.Wheel bearings*Check bearing assemblies for looseness/damage.
Replace if damaged.Front and rear
suspension*Check operation.
Correct if necessary.Steering system*Check operation.
Correct if damaged.
Check toe-in.
Adjust if necessary.Steering shaft*Lubricate every 6 months with lithium-soap-based grease
(all-purpose grease).Fittings and fasteners*Check all chassis fittings and fasteners.
Correct if necessary.Battery*Check specific gravity.
Check that the breather hose is working properly.
Correct if necessary.Lights and switches*Check operation.
Adjust headlight beams.
ITEM ROUTINEINITIAL EVERY
1
month3
months6
months6
months1
year
U4XE65.book Page 8 Tuesday, May 6, 2003 1:38 PM
Page 308 of 376
8-57 1. Rear brake light switch
2. Adjusting nut
1. Contacteur de feu stop sur frein arrière
2.Écrou de réglage
1. Interruptor de la luz de freno trasero
2. Tuerca de ajuste
EBU00834
Adjusting the rear brake light switch
The rear brake light switch, which is activated by
the brake pedal and brake levers, is properly ad-
justed when the brake light comes on just before
braking 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.
U4XE65.book Page 57 Tuesday, May 6, 2003 1:38 PM
Page 334 of 376
8-83 1. Storage box 2. Nut (× 2)
1. Compartiment de rangement 2.Écrou (× 2)
1. Caja artículos 2. Tuerca (× 2)
1. Bulb holder
1. Fixation d’ampoule
1. Portabombilla
EBU09451
Tail/brake light bulb replacement
1. Open the storage box. (See page 4-31.)
2. Remove the nuts together with the washers.
3. Remove the bulb holder (together with the
bulb) by turning it counterclockwise.
U4XE65.book Page 83 Tuesday, May 6, 2003 1:38 PM
Page 358 of 376
10-5
Brake:
Front brake type Dual disk
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 mm
Rear 135 mm
Electrical:
Ignition system DC, C.D.I.
Generator system A.C. magneto
Battery type / voltage, capacity YB14A-A2/12 V, 14 Ah
Headlight type: IncandescenceModel YFM250X
U4XE65.book Page 5 Tuesday, May 6, 2003 1:38 PM
Page 359 of 376
10-6
Bulb voltage, wattage
× quantity:
Headlight 12 V, 25/25 W
× 2
Tail/brake light 12 V, 5/21 W
× 1
Indicator light:
Neutral 12 V, 1.7 W
× 1
Reverse 12 V, 1.7 W × 1
Fuse: 20 AModel YFM250X
U4XE65.book Page 6 Tuesday, May 6, 2003 1:38 PM