CHAPTER 3B ENGINE 50cc/80cc
ATV SERVICE MANUAL09.0
CHAPTER 3B ENGINE PAGE 3B - 54 -
3.8.1General Information:
WARNING! Work on the fuel system in a well-ventilated area free form sparks or open
flames. Do not breath the vapors from the gasoline. Wear protective gloves to prevent skin
irritation.
·
Open the bowl drain and allow all gasoline in the carburetor to drain into an appropriate container
prior to removing or servicing it.
·
Remove control cables and wires carefully to prevent damage.
·
Check all ‘O’ rings for damage. Replace as necessary.
·
Remove carburetor from the scooter before attempting to service the fuel bowl or vacuum
diaphragm.
·
When cleaning the carburetor, remove the vacuum diaphragm before using air or solvents for
cleaning. This will prevent damage to the diaphragm.
·
When storing the scooter for any period of time exceeding one month, use a quality fuel stabilizer to
prevent deterioration of the fuel and damage to the carburetor.
Repairing material
Specification
standard valve
Carburetor
Constant velocity-CVK
Venturi Bore
18mm
Fuel level
20.5 mm
Main Jet
#82
Idle Jet
#35
Idle Speed
1900
±
190 RPM
Throttle Free Play
2-6mm
Mixture screw setting
2 turns
±
1/4 turn
Special tools required- Float Gage
Troubleshooting
Hard Starting Engine
Poor Drivability
·
No Spark
·
Weak spark/Bad Ignition System
·
Low Compression
·
Blocked fuel line
·
No fuel in carburetor
·
Blocked fuel filter
-Blocked fuel line
·
Bad fuel
-Blocked fuel filter
·
Water in fuel
-Blocked vacuum line
·
Air leak at carburetor or manifold
-Leaky vacuum line
·
Improper float level
-Dirty float needle
·
Bad auto chock
-Float set too high
·
Obstructed jet in carburetor
Too much fuel to engine
·
Vacuum slide stuck
-Blocked air filter
·
Damaged vacuum diaphragm
-Manifold air leak
·
Dirt in carburetor
-Bad auto choke
-Blocked air passage in carburetor
Air/Fuel mixture too rich or too lean
·
Bad auto choke
·
Plugged idle jet
·
Float needle stuck or dirty
Содержание 2004 ATV 260
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Страница 171: ...CHAPTER 3B ENGINE 50cc 80cc ATV SERVICE MANUAL09 0 CHAPTER 3B ENGINE PAGE 3B 53 3 8 Carburetor...
Страница 192: ...CHAPTER 3B ENGINE 50cc 80cc ATV SERVICE MANUAL09 0 CHAPTER 3B ENGINE PAGE 3B 74 NOTES...
Страница 228: ...CHAPTER 3C ENGINE 100 125 150 200 SERVICE MANUAL09 0 CHAPTER 3C ENGINE PAGE 3C 36 NOTES...
Страница 247: ...CHAPTER 4B CHASSIS ATV SERVICE MANUAL09 0 CHAPTER 4 CHASSIS PAGE 4B 11 NOTES...
Страница 279: ...CHAPTER 5 FINAL DRIVE ATV SERVICE MANUAL 09 0 CHAPTER 5 FINAL DRIVE 5 32 NOTES...
Страница 292: ...CHAPTER 6 TRANSMISSION ATV SERVICE MANUAL 09 0 CHAPTER 6 TRANSMISSION PAGE 6 13 2X4 TRANSMISSION EXPLODED VIEW...
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Страница 307: ...CHAPTER 7 BRAKES ATV SERVICE MANUAL 09 0 CHAPTER 7 BRAKES PAGE 7 13 NOTES...
Страница 315: ...CHAPTER 8 ELECTRICAL ATV SERVICE MANUAL 09 0 CHAPTER 8 ELECTRICAL PAGE 8 8 CIRCUIT DIAGRAM...
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Страница 333: ...CHAPTER 8 ELECTRICAL ATV SERVICE MANUAL 09 0 CHAPTER 8 ELECTRICAL CTRICAL PAGE 8 26 FOR EUROPE MODEL...
Страница 339: ...CHAPTER 8 ELECTRICAL ATV SERVICE MANUAL 09 0 CHAPTER 8 ELECTRICAL CTRICAL PAGE 8 32 Switch schematic...
Страница 348: ...CHAPTER 8 ELECTRICAL ATV SERVICE MANUAL 09 0 CHAPTER 8 ELECTRICAL CTRICAL PAGE 8 41 Fig 2 Fig 3 Page from owner s manual...
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Страница 362: ...ATV SERVICE MANUAL EUROPE 09 0 PN F010102A01 ATV 09 0 F010102A01...