Page 14 of 400

Cooling system ...................................8-23
Spark plug inspection .........................8-39
Air filter element cleaning ...................8-43
Carburetor settings .............................8-51
Idle speed adjustment ........................8-67
Throttle lever adjustment ....................8-71
Front and rear brake pad
inspection .........................................8-73
Brake fluid level check ........................8-75
Brake fluid replacement ......................8-79
Front brake lever free play .................8-81
Brake pedal height adjustment ...........8-83
Parking brake adjustment ...................8-85
Adjusting the rear brake light switch ...8-89
Clutch adjustment ...............................8-91
Drive chain slack check ......................8-91
Drive chain slack adjustment ..............8-93
Lubricating the drive chain .................8-95
Cable inspection and lubrication ........8-99Brake and shift pedal/brake and
clutch lever lubrication ....................8-101
Lubricating the front upper and
lower arm pivots .............................8-101
Rear arm pivot lubrication ................8-103
Wheel removal .................................8-105
Wheel installation .............................8-105
Replacing the headlight bulb ............8-107
Headlight beam adjustment ..............8-111
Tail/brake light bulb replacement .....8-113
Troubleshooting ................................8-115
Troubleshooting chart.......................8-119
CLEANING AND STORAGE ...................9-1
A. Cleaning ...........................................9-1
B. Storage ............................................9-7
SPECIFICATIONS .................................10-1
10
9
Page 100 of 400
5-5
EBU11670
Front and rear brakes
Brake lever and brake pedal
8Check that there is no free play in the brake
lever. If there is free play, have a Yamaha
dealer inspect the brake system.
8Check for correct brake pedal height. (See
page 8-83.) If the pedal height is incorrect,
have a Yamaha dealer adjust it.
8Check the operation of the brake lever and
brake pedal. They should move smoothly and
there should be a firm feeling when the brakes
are applied. If not, have a Yamaha dealer
inspect the brake system.
Brake fluid level
Check the brake fluid level. Add fluid if neces-
sary. (See pages 8-75–8-79.)
Recommended brake fluid: DOT 4
Page 328 of 400
8-83
EBU10790
Brake pedal height adjustment
The top of the brake pedal should be positioned
0–10 mm below the top of the footrest. If not,
have a Yamaha dealer adjust it.
w
Operating with improperly serviced or
adjusted brakes could cause loss of braking
ability, which could lead to an accident.
After servicing:
8Make sure the brakes operate smoothly
and that the brake pedal position is cor-
rect.
8Make sure the brakes do not drag.
8Make sure the brakes are not spongy. All
air must be bled from the brake system.
Replacement of brake components requires
professional knowledge. These procedures
should be performed by a Yamaha dealer.
a
a. Brake pedal position
a. Hauteur de la pédale de frein
a. Altura del pedal del freno
Page 380 of 400
10-1
Model YFZ350
Dimensions:
Overall length 1,855 mm
Overall width 1,100 mm
Overall height 1,080 mm
Seat height 800 mm
Wheelbase 1,280 mm
Ground clearance 135 mm
Minimum turning radius 3,600 mm
Basic weight:
With oil and full fuel tank 187 kg
Engine:
Engine type Liquid-cooled 2-stroke
Cylinder arrangement Forward-inclined parallel 2-cylinder
Displacement 347 cm
3
Bore× stroke 64 ×54 mm
Compression ratio 6.5 : 1
Starting system Kick starter
Lubrication system Premix
EBU00428
SPECIFICATIONS