Yamaha YZ250FX 2019 User Manual

ENGINE
3-13
4. Install:
• Exhaust pipe protector
EAM30222
CHECKING THE FUEL LINE
1. Remove:
• Seat
• Side cover (left/right)
• Air scoop (left/right)
Refer to “GENERAL CHASSIS” on page 4-1.
• Fuel tank
Refer to “FUEL TANK” on page 7-1.
2. Check:
• Fuel hose “1”
Crack/damage  Replace.
Loose connection  Connect properly.
3. Install:
• Fuel tank
Refer to “FUEL TANK” on page 7-1.
• Air scoop (left/right)
• Seat
• Side cover (left/right)
Refer to “GENERAL CHASSIS” on page 4-1.
EAM30224
CHECKING THE ENGINE OIL LEVEL
1. Stand the vehicle upright on a level surface.
2. Start the engine, warm this up for 3 minutes,
and then stop the engine and wait about 5
minute.
3. Check:
• Oil level
The engine oil level should be between the
minimum level mark “a” and maximum level
mark “b”.
Below the minimum level mark  Add the
recommended engine oil to the proper level.
NOTICE
ECA24290
• Since engine oil also lubricates the clutch,
the wrong oil types or additives could
cause clutch slippage. Therefore, do not
add any chemical additives.
• Do not allow foreign material to enter the
crankcase.
Exhaust pipe protector screw
10 N·m (1.0 kgf·m, 7.4 lb·ft)
LOCTITE®
2
1
4
3
4
T
R
.
.
1
Recommended brand
YAMALUBE
SAE viscosity grades
10W-40, 10W-50, 15W-40, 20W-
40 or 20W-50
Recommended engine oil grade
API service SG type or higher,
JASO standard MA
a
b

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