Yamaha YZ250FX 2019 User Manual

CHASSIS
3-32
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Compression damping (for slow compres-
sion damping)
NOTICE
ECA24390
Do not turn the adjuster forcibly beyond its
adjusting range.
1. Adjust:
• Compression damping (for slow compression
damping)
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a. Turn the adjuster “1” in the direction of “a” or
“b” to make an adjustment.
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EAM30243
CHECKING THE TIRES
1. Measure:
• Tire air pressure
Out of specification  Regulate.
TIP
• Check the tire while it is cold.
• Loose bead stoppers allow the tire to slip off its
position on the rim when the tire pressure is
low.
• If the tire valve stem is found tilted, the tire is
considered to be slipping off its position. Cor-
rect the tire position.
EAM30244
CHECKING AND TIGHTENING THE SPOKES
1. Check:
• Spoke
Bend/damage  Replace.
Loose  Tighten.
Fast compression damping
Minimum (soft)
2 turn(s) in direction “b”*
Standard
1-1/2 turn(s) in direction “b”*
Maximum (hard)
0 turn(s) in direction “b”*
* With the adjusting screw fully turned in di-
rection “a”
Direction “a”
Compression damping is increased
(suspension is harder).
Direction “b”
Compression damping is decreased
(suspension is softer).
Slow compression damping
Minimum (soft)
20 click(s) in direction “b”*
Standard
13 click(s) in direction “b”*
Maximum (hard)
0 click(s) in direction “b”*
* With the adjusting screw fully turned in di-
rection “a”
1
a
b
Tire air pressure (measured on
cold tires)
Front
100 kPa (1.00 kgf/cm², 15 psi)
Rear
100 kPa (1.00 kgf/cm², 15 psi)
1
b
a

Yamaha YZ250FX 2019 Specifications

General

Displacement	250cc
Bore x Stroke	77.0mm x 53.6mm
Fuel System	Yamaha Fuel Injection (YFI), Keihin® 44mm
Ignition	TCI: Transistor Controlled Ignition
Final Drive	Chain
Front Brake	Hydraulic disc, 270mm
Rear Brake	Hydraulic disc, 245mm
Seat Height	37.6 in
Ground Clearance	12.8 in
Fuel Capacity	2.1 gal
Wet Weight	249 lb
Engine Type	Liquid-cooled DOHC 4-stroke
Transmission	Wide-ratio 6-speed; multiplate wet clutch
Front Suspension	KYB® spring-type fork, fully adjustable
Rear Suspension	KYB® single shock
L x W x H	32.5 in
Front Tire	90/90-21
Rear Tire	110/100-18