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Yamaha YZ250 2022 User Manual

Yamaha YZ250 2022
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CHASSIS
3-17
e. Tighten the drive chain puller locknut.
EAM30247
CHECKING AND ADJUSTING THE
STEERING HEAD
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.
2. Check:
Steering head
Grasp the bottom of the front fork legs and
gently rock the front fork.
Blinding/looseness Adjust the steering
head.
3. Remove:
Handlebar
Refer to “HANDLEBAR” on page 4-33.
Upper bracket
Refer to “STEERING HEAD” on page 4-51.
4. Adjust:
Steering head
a. Remove the washer “1”.
b. After loosening the ring nut “2” with a
steering nut wrench “3”, tighten it to the
specified torque.
TIP
Set the torque wrench at a right angle to the
steering nut wrench.
Move the steering to the left and right a couple
of times to check that it moves smoothly.
c. Turn the front fork to the right and left a few
times, and make sure that the steering ro-
tates smoothly. If it does not turn smooth-
ly, remove the lower bracket and check
the upper and lower bearings.
Refer to “STEERING HEAD” on page
4-51.
d. Loosen the ring nut fully turn and then
tighten it to specification with a steering
nut wrench.
WARNING
EWA21110
Do not overtighten the steering ring nut.
e. Check the steering head for looseness or
binding by turning the front fork all the way
in both directions. If any binding is felt, re-
move the lower bracket and check the up-
per and lower bearings.
Refer to “STEERING HEAD” on page
4-51.
f. Install the washer “1”.
Rear wheel axle nut
125 N·m (12.5 kgf·m, 92 lb·ft)
Drive chain puller locknut
19 N·m (1.9 kgf·m, 14 lb·ft)
T
R
.
.
T
R
.
.
1
Steering nut wrench
90890-01403
Exhaust flange nut wrench
YU-A9472
Steering ring nut (initial tighten-
ing torque)
38 N·m (3.8 kgf·m, 28 lb·ft)
Steering ring nut (final tightening
torque)
7 N·m (0.7 kgf·m, 5.2 lb·ft)
3
2
T
R
.
.
T
R
.
.

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Yamaha YZ250 2022 Specifications

General IconGeneral
Engine Type249cc liquid-cooled 2-stroke; reed-valve inducted
Bore x Stroke66.4mm x 72.0mm
Compression Ratio8.9~10.6:1
IgnitionCDI
Transmission5-speed; multiplate wet clutch
Final DriveChain
Suspension RearKYB® single shock; fully adjustable, 12.4-in travel
Brakes FrontHydraulic disc, 270mm
Tires Front80/100-21
Tires Rear110/90-19
Seat Height38.2 in
Wheelbase58.5 in
Ground Clearance14.2 in
Fuel Capacity2.1 gal
Wet Weight227 lb
Suspension FrontKYB® inverted fork; fully adjustable, 11.8-in travel
Brakes RearHydraulic disc, 245mm

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