Yamaha YZ250 2021 User Manual

FRONT FORK
4-14
EAM20100
FRONT FORK
EAM30055
REMOVING THE FRONT FORK LEGS
1. Use a maintenance stand to raise the front
wheel off the ground.
WARNING
EWA13120
Securely support the vehicle so that there is
no danger of it falling over.
TIP
Record the adjusting screw setting position be-
fore loosening the adjuster and the base valve.
2. Loosen:
• Upper bracket pinch bolt
• Damper assembly
• Lower bracket pinch bolt
WARNING
EWA20350
Before loosening the upper and lower brack-
et pinch bolts, support the front fork leg.
TIP
Before removing the front fork leg from the vehi-
cle, loosen the damper assembly “1” with the
cap bolt ring wrench “2”.
3. Remove:
• Front fork leg
EAM30056
DISASSEMBLING THE FRONT FORK LEGS
1. Drain:
• Fork oil
2. Remove:
• Adjuster “1”
(from the inner tube)
TIP
• While compressing the inner tube “2”, set the
cap bolt ring wrench “4” between the inner tube
and locknut “3”.
• Hold the locknut and remove the adjuster.
NOTICE
ECA24520
Do not remove the locknut as the damper rod
may go into the damper assembly and not be
taken out.
3. Remove:
• Dust seal “1”
• Stopper ring “2”
(with a flat-head screwdriver)
NOTICE
ECA14180
Do not scratch the inner tube.
4. Remove:
• Inner tube “1”
a. Push in slowly “a” the inner tube just be-
fore it bottoms out and then pull it back
quickly “b”.
b. Repeat this step until the inner tube can be
pulled out from the outer tube.
Cap bolt ring wrench
90890-01501
Cap bolt ring wrench
YM-01501
1
2
Cap bolt ring wrench
90890-01501
Cap bolt ring wrench
YM-01501
1
2
3
4
G088920
1
2

Yamaha YZ250 2021 Specifications

General

Engine Type	249cc liquid-cooled 2-stroke; reed-valve inducted
Bore x Stroke	66.4mm x 72.0mm
Compression Ratio	8.9~10.6:1
Ignition	CDI
Transmission	5-speed; multiplate wet clutch
Final Drive	Chain
Suspension Rear	KYB® single shock; fully adjustable, 12.4-in travel
Brakes Front	Hydraulic disc, 270mm
Tires Front	80/100-21
Tires Rear	110/90-19
Width	32.5 in
Height	50.8 in
Wheelbase	58.5 in
Ground Clearance	14.2 in
Fuel Capacity	2.1 gal
Wet Weight	227 lb
Fuel Delivery	Keihin PWK38S carburetor
Suspension Front	KYB® Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel
Brakes Rear	Hydraulic disc, 245mm