Yamaha YZ250 2021 User Manual

1
2
3
4
5
6
7
8
9
10
ENGINE
CLUTCH............................................................................................................5-1
REMOVING THE CLUTCH ........................................................................5-1
CHECKING THE FRICTION PLATES........................................................5-1
CHECKING THE CLUTCH PLATES ..........................................................5-1
CHECKING THE CLUTCH SPRINGS........................................................5-1
CHECKING THE CLUTCH HOUSING .......................................................5-1
CHECKING THE CLUTCH BOSS ..............................................................5-2
CHECKING THE PRESSURE PLATE .......................................................5-2
CHECKING THE PUSH LEVER SHAFT ....................................................5-2
CHECKING THE PUSH RODS ..................................................................5-2
CHECKING THE PRIMARY DRIVE GEAR ................................................5-2
CHECKING THE PRIMARY DRIVEN GEAR..............................................5-2
INSTALLING THE CLUTCH .......................................................................5-2

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