Yamaha YZ250 2022 User Manual

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ELECTRICAL SYSTEM
WIRING DIAGRAM ...........................................................................................8-1
COLOR CODE............................................................................................8-1
IGNITION SYSTEM...........................................................................................8-2
TROUBLESHOOTING................................................................................8-2
SOLENOID VALVE SYSTEM ...........................................................................8-3
TROUBLESHOOTING................................................................................8-3
THROTTLE POSITION SENSOR SYSTEM .....................................................8-4
TROUBLESHOOTING................................................................................8-4
ELECTRICAL COMPONENTS.........................................................................8-5
CHECKING THE SWITCHES.....................................................................8-6
CHECKING THE IGNITION SPARK GAP..................................................8-8
CHECKING THE SPARK PLUG CAP ........................................................8-8
CHECKING THE IGNITION COIL ..............................................................8-8
CHECKING THE PICKUP COIL.................................................................8-9
CHECKING THE SOURCE COIL...............................................................8-9
CHECKING THE SOLENOID VALVE OPERATION ................................8-10
CHECKING THE SOLENOID VALVE COIL .............................................8-10
HANDLING NOTE ....................................................................................8-11
CHECKING THE THROTTLE POSITION SENSOR COIL.......................8-11
CHANGING AND ADJUSTING THE THROTTLE POSITION
SENSOR..................................................................................................8-11
CHECKING THE THROTTLE POSITION SENSOR INPUT
VOLTAGE................................................................................................8-13

Yamaha YZ250 2022 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
Seat Height	38.2 in
Wheelbase	58.5 in
Ground Clearance	14.2 in
Fuel Capacity	2.1 gal
Wet Weight	227 lb
Suspension Front	KYB® inverted fork; fully adjustable, 11.8-in travel
Brakes Rear	Hydraulic disc, 245mm