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
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Page 303 of 350
8-81
EBU00389
Fuse replacement
1. The fuse block is located on the right side of
the machine.
2. If the fuse is blown, turn off the ignition
switch and install a new fuse of proper
amperage. Then turn on the ignition switch,
if the fuse immediately blows again, consult
a Yamaha dealer.
w
Always use a fuse of the specified rating.
Never use a material in place of the proper
fuse. An improper fuse can cause damage to
the electrical system which could lead to a
fire.
cC
To prevent accidental short-circuiting, turn
off the main switch when checking or replac-
ing a fuse.
qw
1. Fuse 2. Spare fuse1. Fusible 2. Fusible de rechange1. Fusible 2. Fusible de repuestoSpecified fuse: 5A
5VJ-9-61-08 3/17/03 4:52 PM Page 8-82
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
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