ENGINE SPECIFICATIONS
2-2
EAM20128
ENGINE SPECIFICATIONS
Engine
Combustion
cycle
4-stroke
Cooling system
Liquid cooled
Valve
train
DOHC
Displacement
250
cm³
Number of cylinders
Single cylinder
Bore
stroke
77.0
53.6 mm (3.03
2.11 in)
Compression ratio
13.8 : 1
Starting system
Electric starter
Fuel
Recommended fuel
Unleaded gasoline (E10 acceptable)
Octane number (RON)
95
Fuel tank capacity
7.9 L (2.1 US gal, 1.7 Imp.gal)
Fuel reserve amount
2.0 L (0.53 US gal, 0.44 Imp.gal)
Engine oil
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
Lubrication system
Wet sump
Engine oil quantity
Oil change
0.73 L (0.77 US qt, 0.64 Imp.qt)
With oil filter removal
0.75 L (0.79 US qt, 0.66 Imp.qt)
Quantity (disassembled)
0.95 L (1.00 US qt, 0.84 Imp.qt)
Oil filter
Oil filter type
Cartridge
Cooling system
Coolant quantity
Radiator (including all routes)
0.93 L (0.98 US qt, 0.82 Imp.qt)
Radiator cap valve opening pressure
107.9–137.3 kPa (1.08–1.37 kgf/cm², 15.6–19.9
psi)
Spark plug(s)
Manufacturer/model
NGK/LMAR8E-J
Spark plug gap
0.6–0.7 mm (0.024–0.028 in)
Cylinder head
Warpage limit
0.05 mm (0.0020 in)
Camshaft
Camshaft cap inside diameter
22.000–22.021 mm (0.8661–0.8670 in)
Camshaft journal diameter
21.959–21.972 mm (0.8645–0.8650 in)
Camshaft-journal-to-camshaft-cap clearance
0.028–0.062 mm (0.0011–0.0024 in)
Camshaft-journal-to-camshaft-cap
clearance
limit
0.080 mm (0.0032 in)
Camshaft lobe dimensions
Lobe height limit (Intake)
32.130 mm (1.2650 in)
Lobe height limit (Exhaust)
33.460 mm (1.3173 in)
Содержание WR250F 2022
Страница 5: ...EAM20093 YAMAHA MOTOR CORPORATION U S A WR MOTORCYCLE LIMITED WARRANTY...
Страница 8: ......
Страница 10: ......
Страница 41: ...MULTI FUNCTION DISPLAY 1 29...
Страница 62: ...ELECTRICAL SPECIFICATIONS 2 9 Radiator fan motor fuse 5 0 A Spare fuse 15 0 A...
Страница 70: ...CABLE ROUTING DIAGRAM 2 17 EAM20152 CABLE ROUTING DIAGRAM Frame and engine left side view...
Страница 72: ...CABLE ROUTING DIAGRAM 2 19 Frame and engine right side view...
Страница 74: ...CABLE ROUTING DIAGRAM 2 21 Handlebar front view...
Страница 76: ...CABLE ROUTING DIAGRAM 2 23 Frame and engine top view...
Страница 78: ...CABLE ROUTING DIAGRAM 2 25 Frame and battery top view...
Страница 80: ...CABLE ROUTING DIAGRAM 2 27 Rear brake right side view...
Страница 82: ...CABLE ROUTING DIAGRAM 2 29 Front brake front view and right side view...
Страница 84: ...CABLE ROUTING DIAGRAM 2 31 Taillight top view and right side view...
Страница 86: ...CABLE ROUTING DIAGRAM 2 33...
Страница 131: ...GENERAL CHASSIS 4 5 a Projection b Slot c Rib side cover d Rib rear fender a a a 1 1 c c b b d d...
Страница 201: ...CHECKING THE SHIFT DRUM ASSEMBLY 5 73 CHECKING THE TRANSMISSION 5 73 INSTALLING THE TRANSMISSION 5 74...
Страница 204: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 3 1 Oil filter element 2 Oil pump...
Страница 205: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 4 1 Intake camshaft 2 Exhaust camshaft...
Страница 206: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 5 1 Camshaft 2 Oil pressure check bolt 3 Oil pump 4 Oil filter element...
Страница 259: ...SHIFT SHAFT 5 58 TIP Align the punch mark a on the shift shaft with the punch mark b in the shift pedal 1 1 2 2 a b...
Страница 265: ...OIL PUMP 5 64 A Primary drive gear side B Crankcase cover side 5 7 mm 0 02 0 28 in 5 c d 6 8 b 8 6 7 E...
Страница 278: ...TRANSMISSION 5 77...
Страница 288: ...WATER PUMP 6 9...
Страница 298: ...THROTTLE BODY 7 9...
Страница 301: ......
Страница 302: ...IGNITION SYSTEM 8 1 EAM20142 IGNITION SYSTEM EAM30277 CIRCUIT DIAGRAM...
Страница 306: ...ELECTRIC STARTING SYSTEM 8 5 EAM20143 ELECTRIC STARTING SYSTEM EAM30279 CIRCUIT DIAGRAM...
Страница 312: ...CHARGING SYSTEM 8 11 EAM20144 CHARGING SYSTEM EAM30282 CIRCUIT DIAGRAM...
Страница 315: ...CHARGING SYSTEM 8 14...
Страница 316: ...SIGNALING SYSTEM 8 15 EAM20154 SIGNALING SYSTEM EAM30348 CIRCUIT DIAGRAM...
Страница 320: ...LIGHTING SYSTEM 8 19 EAM20153 LIGHTING SYSTEM EAM30346 CIRCUIT DIAGRAM...
Страница 323: ...LIGHTING SYSTEM 8 22...
Страница 324: ...COOLING SYSTEM 8 23 EAM20155 COOLING SYSTEM EAM30350 CIRCUIT DIAGRAM...
Страница 327: ...COOLING SYSTEM 8 26...
Страница 328: ...FUEL INJECTION SYSTEM 8 27 EAM20145 FUEL INJECTION SYSTEM EAM30284 CIRCUIT DIAGRAM...
Страница 353: ...FUEL INJECTION SYSTEM 8 52...
Страница 354: ...FUEL PUMP SYSTEM 8 53 EAM20146 FUEL PUMP SYSTEM EAM30287 CIRCUIT DIAGRAM...
Страница 388: ...SELF DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE 9 15...
Страница 398: ...CHASSIS 10 9...
Страница 400: ......
Страница 402: ......