ENGINE SPECIFICATIONS
2-3
2nd ring
End gap limit
0.95 mm (0.0374 in)
Ring side clearance
0.030–0.065 mm (0.0012–0.0026 in)
Side clearance limit
0.100 mm (0.0039 in)
Crankshaft
Crank assembly width
59.95–60.00 mm (2.360–2.362 in)
Runout limit
0.050 mm (0.0020 in)
Clutch
Clutch type
Wet, multiple-disc
Clutch lever free play
7.0–12.0 mm (0.28–0.47 in)
Friction plate thickness
2.90–3.10 mm (0.114–0.122 in)
Wear limit
2.80 mm (0.110 in)
Plate quantity
8 pcs
Clutch plate thickness
1.50–1.70 mm (0.059–0.067 in)
Plate quantity
7 pcs
Warpage limit
0.20 mm (0.008 in)
Clutch spring free length
50.00 mm (1.97 in)
Clutch spring free length limit
48.00 mm (1.89 in)
Push rod bending limit
0.30 mm (0.012 in)
Drivetrain
Primary reduction ratio
3.000 (63/21)
Transmission type
Constant mesh 5-speed
Gear ratio
1st
1.929
(27/14)
2nd
1.533
(23/15)
3rd
1.278
(23/18)
4th
1.091
(24/22)
5th
0.952
(20/21)
Main axle runout limit
0.01 mm (0.0004 in)
Drive axle runout limit
0.01 mm (0.0004 in)
Secondary reduction ratio
3.571 (50/14)
Final
drive
Chain
Air filter
Air filter element
Wet element
Air filter oil grade
Yamaha foam air filter oil or other quality foam
air filter oil
Carburetor
Type
quantity
PWK38
1
ID mark
1P87 53
Main
jet
#178
Main air jet
#200
Jet
needle
N3-EW-2
Needle
jet
2.9(#6)
Cutaway
#7
Pilot
outlet
0.8
Pilot
jet
#50
Bypass
1
1.5
Air screw turns out
1-1/4
Valve seat size
3.8
Starter jet 1
#85
Power
Jet
#50
Содержание YZ250 2022
Страница 5: ...EAM20162 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY...
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Страница 38: ...MOTORCYCLE CARE AND STORAGE 1 26...
Страница 54: ...CABLE ROUTING DIAGRAM 2 15 EAM20152 CABLE ROUTING DIAGRAM Frame and engine left side view...
Страница 56: ...CABLE ROUTING DIAGRAM 2 17 Frame and engine left side view...
Страница 58: ...CABLE ROUTING DIAGRAM 2 19 Frame and engine right side view...
Страница 60: ...CABLE ROUTING DIAGRAM 2 21 Handlebar front view 0 mm 0 in 0 mm 0 in...
Страница 62: ...CABLE ROUTING DIAGRAM 2 23 Rear brake right side view...
Страница 64: ...CABLE ROUTING DIAGRAM 2 25...
Страница 92: ...ELECTRICAL SYSTEM 3 26...
Страница 160: ...CHAIN DRIVE 4 66...
Страница 193: ...CLUTCH 5 31 2 1...
Страница 233: ...ELECTRICAL COMPONENTS 8 6 EAM30289 CHECKING THE SWITCHES 1 1 Engine stop switch...
Страница 254: ...TROUBLESHOOTING 9 13...
Страница 261: ...ENGINE 10 6...
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