Yamaha YZ250 2021 User Manual

SWINGARM
4-28
EAM20103
SWINGARM
EAM30071
REMOVING THE SWINGARM
1. Use a maintenance stand to raise the rear
wheel off the ground.
WARNING
EWA13120
Securely support the vehicle so that there is
no danger of it falling over.
2. Measure:
• Swingarm side play
• Swingarm vertical movement
a. Measure the tightening torque of the pivot
shaft nut.
b. Check the swingarm side play “A” by mov-
ing the swingarm from side to side.
If the swingarm has side-to-side play,
check the bushings, the bearings and the
collars.
c. Check the swingarm vertical movement
“B” by moving the swingarm up and down.
If swingarm vertical movement is not
smooth or if there is binding, check the
bushings, the bearings and the collars.
Pivot shaft nut
85 N·m (8.5 kgf·m, 63 lb·ft)
T
R
.
.
B
A
B
A
G088936

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