CHAPTER 3B ENGINE 50cc/80cc
ATV SERVICE MANUAL07.0
CHAPTER 3B ENGINE PAGE 3B - 19 -
ID of piston pin hole
13.002-13.008
13.04
OD of the piston pin 13.992-13.000
12.96
Clearance between the piston pin and the hole
0.002-0.014
0.02
ID of the small end of the connecting rod
13.016-13.027
13.06
Trouble shooting
●
In case of difficult starting, unsteady low speed running, check if there is any problem.
Low compression pressure
●
The piston ring worn, burnt/broken
●
The cylinder or the piston worn or damage.
Too high compression press
●
carbon deposit on the piston and the combustion chamber.
White smoke out of the exhaust pipe
Knocking noise by the piston.
●
The piston ring worn/damaged.
●
The cylinder, the piston or the piston ring worn
●
The piston/cylinder worn or damaged.
●
The piston pin and piston hole worn.
3.3.2 Removing the cylinder
Detach the cylinder head
Remove the chain guide of the cam chain
Remove the cylinder
Remove the cylinder gasket and the locating pin
from the the cylinder.
3.3.3 Removing the piston
Remove the piston pin circlip.
Attention:
Don’t drop the circlip into the crankcase
Take out the piston pin and then the piston
Push the piston pin from the side opposite the
removed snap ring
Pay attention to avoid scratching the piston surfaces
Checking the piston, the piston pin and the piston
ring.
Attention:
Don’t damage or break the rings.
Clear off all the carbon deposit from the ring groove.
Summary of Contents for 2005 ATV 260
Page 15: ...CHAPTER 1 GENERALINFORMATION ATV SERVICE MANUAL 07 0 CHAPTER 1 GENERAL PAGE 1 11 NOTES...
Page 37: ...CHAPTER 2 MAINTENANCE ATV SERVICE MANUA 07 0 CHAPTER 2 MAINTENANCE PAGE 2 22 NOTES...
Page 106: ...CHAPTER 3A ENGINE 260 300 cc ATV SERVICE MANUAL07 0 CHAPTER 3 ENGINE PAGE 3A 69 NOTES...
Page 157: ...CHAPTER 3B ENGINE 50cc 80cc ATV SERVICE MANUAL07 0 CHAPTER 3B ENGINE PAGE 3B 51 3 8 Carburetor...
Page 177: ...CHAPTER 3B ENGINE 50cc 80cc ATV SERVICE MANUAL07 0 CHAPTER 3B ENGINE PAGE 3B 71 NOTES...
Page 213: ...CHAPTER 3C ENGINE 100 125 150 200 SERVICE MANUAL07 0 CHAPTER 3C ENGINE PAGE 3C 36 NOTES...
Page 232: ...CHAPTER 4B CHASSIS ATV SERVICE MANUAL07 0 CHAPTER 4 CHASSIS PAGE 4B 11 NOTES...
Page 261: ...CHAPTER 5 FINAL DRIVE ATV SERVICE MANUAL 07 0 CHAPTER 5 FINAL DRIVE 5 29 NOTES...
Page 276: ...CHAPTER 6 TRANSMISSION ATV SERVICE MANUAL 07 0 CHAPTER 6 TRANSMISSION PAGE 6 15 NOTES...
Page 289: ...CHAPTER 7 BRAKES ATV SERVICE MANUAL 07 0 CHAPTER 7 BRAKES PAGE 7 13 NOTES...
Page 297: ...CHAPTER 8 ELECTRICAL ATV SERVICE MANUAL 07 0 CHAPTER 8 ELECTRICAL PAGE 8 8 CIRCUIT DIAGRAM...
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Page 340: ...ATV SERVICE MANUAL 07 0 NOTES...
Page 341: ...9B 9 939397 93...