Yamaha YZ250FX 2019 User Manual

LUBRICATION POINTS AND LUBRICANT TYPES
2-19
EAM20132
LUBRICATION POINTS AND LUBRICANT TYPES
EAM30206
ENGINE
Lubrication point Lubricant types
Oil seal lips
Bearing
O-ring
Camshaft cap bolt threads and contacting surface
Cylinder head bolt threads, seats, washers
Valve stems
Valve stem ends
Valve lifter outer surface
Camshaft lobe and journal
Valve lifter top surface
Crankshaft journal
Crankshaft big end thrust surfaces and washers
Piston outer surface
Piston pin outer surface
Balancer shaft journal (left)
Balancer nut threads (left)
Decompression system moving parts
Water pump impeller shaft
Oil pump rotors (inner and outer)
Oil passage gasket
Oil pump shaft
Ratchet wheel and ratchet wheel guide contacting portion
Primary drive gear nut threads and contacting surface
Clutch boss nut
Primary driven gear inner surface and end surface
Clutch push rod washer
Clutch push rod 1 outer surface
Clutch push rod 1 thrust surface
Clutch push rod 2 outer surface
Push lever shaft outer surface
Transmission gear inner surface (wheel and pinion) and collar
LS
E
LS
E
M
M
M
E
M
M
M
E
E
E
M
E
E
LS
E
LS
E
M
E
E
E
E
E
E
E
E
M

Yamaha YZ250FX 2019 Specifications

General

Displacement	250cc
Bore x Stroke	77.0mm x 53.6mm
Fuel System	Yamaha Fuel Injection (YFI), Keihin® 44mm
Ignition	TCI: Transistor Controlled Ignition
Final Drive	Chain
Front Brake	Hydraulic disc, 270mm
Rear Brake	Hydraulic disc, 245mm
Seat Height	37.6 in
Ground Clearance	12.8 in
Fuel Capacity	2.1 gal
Wet Weight	249 lb
Engine Type	Liquid-cooled DOHC 4-stroke
Transmission	Wide-ratio 6-speed; multiplate wet clutch
Front Suspension	KYB® spring-type fork, fully adjustable
Rear Suspension	KYB® single shock
L x W x H	32.5 in
Front Tire	90/90-21
Rear Tire	110/100-18