Yamaha YZ250FX 2020 User Manual

CYLINDER AND PISTON
5-33
EAM20109
CYLINDER AND PISTON
Removing the cylinder and piston
Order Job/Parts to remove Q’ty Remarks
Cylinder head Refer to “CYLINDER HEAD” on page 5-21.
1 Cylinder body 1
2Gasket 1
3 Dowel pin 2
4 Piston pin clip 2
5 Piston pin 1
6Piston 1
7 Piston ring set 1
1
2
3
4
4
5
6
7
E
E
LT
10 N・m (1.0 kgf・m, 7.4 lb・ft)
10 N・m (1.0 kgf・m, 7.4 lb・ft)
E

Yamaha YZ250FX 2020 Specifications

General

Engine Type	Liquid-cooled, 4-stroke, DOHC, 4-valve
Displacement	250cc
Bore x Stroke	77.0mm x 53.6mm
Compression Ratio	13.5:1
Fuel System	Fuel Injection
Ignition	TCI
Final Drive	Chain
Front Brakes	Hydraulic disc, 270mm
Rear Brakes	Hydraulic disc, 245mm
Length	85.6 in
Width	32.5 in
Height	50.4 in
Seat Height	37.6 in
Ground Clearance	12.8 in
Front Suspension	KYB® Speed-Sensitive System inverted fork; fully adjustable, 12.2-in travel
Front Tire	80/100-21
Rear Tire	110/100-18