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Service Information; Troubleshooting - KYMCO ZX/SCOUT 50 Service Manual

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11
. CARBURETOR

SERVICE INFORMATION

GENERAL INSTRUCTIONS
• When working with gasoline, keep away from sparks and flames..
• Note the locations of O-rings when disassembling and replace them with new ones during
assembly.
• All cables, fuel lines and wires must be routed and secured at correct locations.
• Bleed air from the oil lines whenever they are disconnected.
SPECIFICATIONS
Venturi dia.
Identification number
Float level
Main jet
Slow jet
Air screw opening
Idle speed
Throttle grip free play
SPECIAL TOOL
Float level gauge

TROUBLESHOOTING

Engine does not start
• No fuel in tank
• Too much fuel getting to cylinder
• Clogged fuel filter
• Clogged air cleaner
Engine idles roughly, stalls or runs poorly
• Incorrect idle speed
• Ignition malfunction
• Compression too low
• Incorrectly adjusted air screw
• Incorrect float level
5.0mm
2100±100rpm
2 6mm
Lean mixture
• Clogged fuel jets
• Clogged fuel cap vent
• Clogged fuel filter
• Bent, kinked or restricted fuel line
• Clogged air cleaner
• Intake air leaks
• Fuel contaminated
• Faulty reed valve
• Clogged fuel jets
ZX / SCOUT
14mm
0.14A
#80
#35
¼
• Faulty float valve
• Float level too low
• Clogged air cleaner
Rich mixture
• Faulty float valve
• Float level too high
• Clogged air jets
11-2

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