CYLINDER AND PISTON
5-35
EAS1SL1230
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.
EAS1SL1231
INSTALLING THE PISTON AND CYLINDER
1. Install:
• Oil ring expander “1”
• Lower oil ring rail “2”
• Upper oil ring rail “3”
• 2nd ring “4”
• Top ring “5”
TIP
Be sure to install the piston rings 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.
Piston ring end gap
Top ring
End gap (installed)
0.20–0.30 mm (0.0079–0.0118 in)
Limit
0.55 mm (0.0217 in)
End gap (installed)
0.35–0.50 mm (0.0138–0.0197 in)
Limit
0.85 mm (0.0335 in)
Oil ring
End gap (installed)
0.20–0.50 mm (0.0079–0.0197 in)
Piston pin outside diameter
17.991–18.000 mm (0.7083–
0.7087 in)
Limit
17.971 mm (0.7075 in)
Piston pin bore inside diameter
18.004–18.015 mm (0.7088–
0.7093 in)
Limit
18.045 mm (0.7104 in)
b
New
Summary of Contents for YZ450F(E) 2014
Page 4: ......
Page 10: ......
Page 12: ......
Page 16: ...LOCATION OF IMPORTANT LABELS 1 2 EUR ...
Page 17: ...LOCATION OF IMPORTANT LABELS 1 3 AUS NZL ZAF ...
Page 42: ...CLEANING AND STORAGE 1 28 ...
Page 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 27 ...
Page 72: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29 ...
Page 74: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 31 ...
Page 76: ...CABLE ROUTING DIAGRAM 2 33 EAS1SL1064 CABLE ROUTING DIAGRAM ...
Page 78: ...CABLE ROUTING DIAGRAM 2 35 ...
Page 80: ...CABLE ROUTING DIAGRAM 2 37 ...
Page 82: ...CABLE ROUTING DIAGRAM 2 39 ...
Page 84: ...CABLE ROUTING DIAGRAM 2 41 ...
Page 86: ...CABLE ROUTING DIAGRAM 2 43 ...
Page 192: ...CHAIN DRIVE 4 66 ...
Page 270: ...TRANSMISSION 5 75 ...
Page 278: ...WATER PUMP 6 7 ...
Page 290: ......
Page 299: ...CHARGING SYSTEM 8 9 ...
Page 325: ...FUEL PUMP SYSTEM 8 35 ...
Page 326: ...ELECTRICAL COMPONENTS 8 36 EAS1SL1332 ELECTRICAL COMPONENTS EAS1SL1333 9 10 1 2 3 4 5 6 7 8 ...
Page 328: ...ELECTRICAL COMPONENTS 8 38 CHECKING THE SWITCHES B Y P Sb 2 1 ...
Page 329: ...ELECTRICAL COMPONENTS 8 39 1 Engine stop switch 2 Neutral switch ...
Page 338: ...ELECTRICAL COMPONENTS 8 48 ...
Page 346: ...LIST OF SELF DIAGNOSTIC AND FAIL SAFE ACTIONS 9 7 ...
Page 357: ......
Page 358: ...PRINTED IN JAPAN E PRINTED ON RECYCLED PAPER ...