Page 13 of 350
LOCATION OF THE WARNING AND
SPECIFICATION LABELS .......................1-1
SAFETY INFORMATION .........................2-1
DESCRIPTION AND MACHINE
IDENTIFICATION.....................................3-1
Identification number records ...............3-3
Key identification number .....................3-5
Vehicle identification number ...............3-5
Model label ...........................................3-7
CONTROL FUNCTIONS..........................4-1
Main switch ...........................................4-1
Indicator lights ......................................4-3Handlebar switches ..............................4-5
Throttle lever ........................................4-9
Speed limiter ......................................4-11
Front brake lever ................................4-13
Rear brake lever .................................4-13
Parking brake .....................................4-15
Drive select lever ................................4-17
Fuel tank cap ......................................4-17
Fuel cock ............................................4-19
Starter (choke) ....................................4-21
Seat ....................................................4-23
PRE-OPERATION CHECKS ...................5-1
Front and rear brakes ...........................5-5
Fuel ......................................................5-7
EBU00015
CONTENTS
1
2
3
45
5VJ-9-61-01 3/14/03 11:48 PM Page 12
Page 15 of 350
PERIODIC MAINTENANCE AND
ADJUSTMENT .........................................8-1
Owner’s manual and tool kit .................8-3
Periodic maintenance/Lubrication ........8-7
Engine oil ............................................8-13
Transmission oil .................................8-21
Spark plug inspection .........................8-27
Engine and V-belt compartment
air filter element cleaning .................8-31
Idle speed adjustment ........................8-41
Valve clearance adjustment ...............8-43
Throttle lever adjustment ....................8-43
Front and rear brake shoe
inspection .........................................8-45
Front brake lever free play
adjustment ........................................8-47
Rear brake adjustment .......................8-55
Drive chain slack check ......................8-57
Drive chain slack adjustment ..............8-59Lubricating and drive chain ................8-63
Draining the V-belt compartment ........8-65
Cable inspection and lubrication ........8-67
Brake lever lubrication ........................8-69
Knuckle shaft, lower arms and
steering shaft lubrication ..................8-69
Wheel removal ...................................8-71
Wheel installation ...............................8-71
Battery ................................................8-73
Replenishing the battery fluid .............8-77
Fuse replacement ...............................8-81
Replacing the headlight bulb ..............8-83
Tail/brake light bulb replacement .......8-87
Headlight beam adjustment ................8-89
Troubleshooting ..................................8-91
Troubleshooting chart .........................8-958
5VJ-9-61-01 3/14/03 11:48 PM Page 14
Page 49 of 350
3-1
EBU00032
DESCRIPTION AND MACHINE
IDENTIFICATION
1. Seat 11. Rear brake lever
2. Drive select lever 12. Parking brake
3. Headlight 13. Reverse indicator light
4. Front cover 14. Neutral indicator light
5. Front wheel 15. Front brake lever
6. Starter (choke) 16. Throttle lever
7. Fuel cock 17. Main switch
8. Rear wheel 18. Fuel tank cap
9. Tail/brake light 19. Handlebar switches
10. Footboard
NOTE:
The machine you have purchased may differ
slightly from those shown in the figures of this
manual.
wqer
!5!2!1
!3
!4
!6
!9!8!7
!0
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5VJ-9-61-03 3/14/03 11:49 PM Page 2
Page 81 of 350
5-1
EBU00113
PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
Brakes• Check operation, condition and free play. 5-5 – 5-7,
• Adjust if necessary. 8-45 – 8-55
Fuel • Check fuel level.
• Fill with fuel if necessary.5-7 – 5-11
Engine oil and• Check oil level. 5-11 – 5-15,
transmission oil• Fill with oil if necessary. 8-13 – 8-25
Drive chain• Check chain slack and condition.
5-15, 8-57 – 8-63
• Adjust if necessary.
Throttle• Check for proper throttle cable operation. 5-15
Wheels and tires• Check tire pressure, wear and damage. 5-19 – 5-25, 8-71
Fittings and fasteners• Check all fittings and fasteners. 5-15
Battery• Check fluid level.
5-17, 8-73 – 8-79
• Fill with distilled water if necessary.
Lights and switches• Check for proper operation. 5-17, 8-83 – 8-87
5VJ-9-61-05 3/17/03 4:50 PM Page 2
Page 97 of 350
5-17
EBU01162
Fittings and fasteners
Always check the tightness of chassis fittings
and fasteners before a ride. Take the machine
to a Yamaha dealer or refer to the Service
Manual for correct tightening torque.
EBU00803
Lights
Check the headlight and tail/brake light to make
sure they are in working condition. Repair as
necessary for proper operation.
EBU11700
Switches
Check the operation of all switches. Have a
Yamaha dealer repair as necessary for proper
operation.
EBU00499
Battery
Check fluid level and fill if necessary. Use only
distilled water if refilling is necessary. (See
pages 8-73–8-79.)
5VJ-9-61-05 3/17/03 4:50 PM Page 18
Page 121 of 350
6-15
Shifting: reverse
1. Bring the machine to a complete stop and
return the throttle lever to the closed posi-
tion.
2. Apply the parking brake.
3. Shift the gear from neutral to reverse and
vice versa by moving the drive select lever
along the shift guide.
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.
4. Check behind for people or obstacles, then
release the parking brake.
5. Open the throttle lever gradually and contin-
ue to watch to the rear while backing.
5VJ-9-61-06 3/17/03 4:51 PM Page 16
Page 309 of 350
1. Bulb holder1. Fixation d’ampoule1. Portabombillas
1. Bulb 2.Bulb holder
1. ampoule 2.Fixation d’ampoule1. Bombilla 2.Portabombillas
8-87
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).
q
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5VJ-9-61-08 3/17/03 4:52 PM Page 8-88
Page 335 of 350
10-5
Model YFA1
Shock absorber:
Front Coil spring/Oil damper
Rear Coil spring/Oil damper
Wheel travel:
Front 70 mm
Rear 80 mm
Electrical:
Ignition system C.D.I.
Charging system A.C. Magneto
Battery type/voltage, capacity 12N12C-4A-2/12V, 12Ah
Headlight type: Bulb
Bulb volgate, wattage ×quantity:
Headlight 12V, 25 W/25 W ×1
Tail/brake light 12V, 5 W/21 W ×1
Indicator light:
Neutral 12V, 3.4 W ×1
Reverse 12V, 3.4 W ×1
Fuse: 5A
5VJ-9-61-09~11 3/14/03 11:55 PM Page 16
