Yamaha yz250 2015 User Manual

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ENGINE REMOVAL
ENGINE REMOVAL
REMOVING THE ENGINE
Order Part name Q'ty Remarks
Hold the machine by placing the suitable stand
under the frame.
Refer to "HANDLING NOTE".
Drain the transmission oil.
Refer to "CHANGING THE TRANSMISSION
OIL" section in the CHAPTER 3.
Seat and fuel tank
Refer to "SEAT, FUEL TANK AND SIDE
COVERS" section
Carburetor
Refer to "CARBURETOR AND REED
VALVE" section.
Exhaust pipe and silencer
Refer to "EXHAUST PIPE AND SILENCER"
section.
Exhaust pipe stay (rear)
Refer to "EXHAUST PIPE AND SILENCER"
section.
Clutch cable Disconnect at engine side.
Radiator Refer to "RADIATOR" section.
Spark plug
Disconnect the CDI magneto lead.
1 Neutral switch 1 Disconnect the neutral switch lead.
2 Drive chain sprocket cover 1
34 Nm (3.4 m kg, 24 ft lb)
64 Nm (6.4 m kg, 46 ft lb)
26 Nm (2.6 m kg, 19 ft lb)
64 Nm (6.4 m kg, 46 ft lb)
75 Nm (7.5 m kg, 54 ft lb)
4 Nm (0.4 m kg, 2.9 ft lb)
85 Nm (8.5 m kg, 61 ft lb)
5 Nm (0.5 m kg, 3.6 ft lb)

Yamaha yz250 2015 Specifications

General

Displacement	249cc
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
Front Tire	80/100-21
Rear Tire	110/90-19
Wheelbase	58.3 in
Seat Height	39.1 in
Ground Clearance	14.2 in
Fuel Capacity	2.1 gal
Wet Weight	227 lbs
Engine Type	2-stroke
Fuel System	Keihin PWK38S
Front Suspension	KYB Speed-Sensitive System inverted fork; fully adjustable
Rear Suspension	12.4-in travel
Front Brake	Single disc, 250mm
Rear Brake	Hydraulic single disc brake, 245mm
Width	32.5 inches