CYLINDER AND PISTON
5-33
CHECKING THE PISTON PIN
1. Check:
• Piston pin
Blue discoloration/grooves
Replace the
piston pin and then check the lubrication
system.
2. Measure:
• Piston pin outside diameter “a”
Out of specification
Replace the piston
pin.
3. Measure:
• Piston pin bore inside diameter “b”
Out of specification
Replace the piston.
EAS1SM1231
INSTALLING THE PISTON AND CYLINDER
1. Install:
• Oil ring expander “1”
• Lower oil ring rail “2”
• Upper oil ring rail “3”
• Top ring “4”
TIP
Be sure to install the piston ring so that the
manufacturer’s marks or numbers face up.
2. Install:
• Piston “1”
• Piston pin “2”
• Piston pin clip “3”
TIP
• Apply the engine oil to the piston pin.
• Install the piston with the F mark “a” on it
pointing to its intake (front) side.
• Before installing the piston pin clip, cover the
crankcase opening with a cloth to prevent the
clip from falling into the crankcase.
• Install the piston pin clips, so that the clip ends
are 3 mm (0.12 in) “c” or more from the cutout
in the piston.
Piston pin outside diameter
15.991–16.000 mm (0.6296–
0.6299 in)
Limit
15.971 mm (0.6288 in)
Piston pin bore inside diameter
16.002–16.013 mm (0.6300–
0.6304 in)
Limit
16.043 mm (0.6316 in)
b
4
New
Содержание YZ250F(E)
Страница 4: ......
Страница 10: ......
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Страница 16: ...LOCATION OF IMPORTANT LABELS 1 2 EUR...
Страница 17: ...LOCATION OF IMPORTANT LABELS 1 3 AUS NZL ZAF...
Страница 42: ...CLEANING AND STORAGE 1 28...
Страница 68: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 25...
Страница 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 27...
Страница 71: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 28 1 Exhaust camshaft 2 Intake camshaft 3 Oil filter element 4 Oil pump...
Страница 72: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29...
Страница 73: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 30 1 Camshaft 2 Oil pressure check bolt 3 Oil filter element 4 Oil pump...
Страница 74: ...CABLE ROUTING DIAGRAM 2 31 EAS1SM1064 CABLE ROUTING DIAGRAM...
Страница 76: ...CABLE ROUTING DIAGRAM 2 33...
Страница 78: ...CABLE ROUTING DIAGRAM 2 35...
Страница 80: ...CABLE ROUTING DIAGRAM 2 37...
Страница 82: ...CABLE ROUTING DIAGRAM 2 39...
Страница 84: ...CABLE ROUTING DIAGRAM 2 41...
Страница 190: ...CHAIN DRIVE 4 66...
Страница 250: ...OIL PUMP AND BALANCER GEAR 5 57 c d 6 6 7 8 8 b...
Страница 286: ......
Страница 293: ...CHARGING SYSTEM 8 7 EAS1SM1325 2 AC magneto 3 Rectifier regulator 4 Joint connector 5 Condenser...
Страница 295: ...CHARGING SYSTEM 8 9 EAS1SM1326...
Страница 321: ...FUEL PUMP SYSTEM 8 35 EAS1SM1333...
Страница 322: ...ELECTRICAL COMPONENTS 8 36 ELECTRICAL COMPONENTS EAS1SM1334 9 10 1 2 3 4 5 6 7 8...
Страница 324: ...ELECTRICAL COMPONENTS 8 38 CHECKING THE SWITCHES B Y P Sb 2 1...
Страница 325: ...ELECTRICAL COMPONENTS 8 39 1 Engine stop switch 2 Neutral switch...
Страница 334: ...ELECTRICAL COMPONENTS 8 48...
Страница 342: ...LIST OF SELF DIAGNOSTIC AND FAIL SAFE ACTIONS 9 7...
Страница 353: ......
Страница 354: ...PRINTED IN JAPAN E PRINTED ON RECYCLED PAPER...