CSC SG250 - Engine Troubleshooting

SG250 Owner’s and Service Manual
www.CSCMotorcycles.com
83
Remove the exhaust header crush gasket from the cylinder
head.
Remove the mesh gasket between the exhaust header and
the muffler.
Assembly is the reverse of disassembly.
CSC stocks all SG250 exhaust system parts. Please call us at 909 445 0900 if you require replacement
parts.
Engine Troubleshooting
Item
Symptom
Cause
Vehicle Effect
Maintenance Action
Intake system
Hard starting,
low power
Excessive dust
on the air
cleaner
element
Poor performance, poor
idling, excessive fuel
consumption, dark smoke
exhaust
Clean or replace the air
cleaner element
Excessive intake
noise
Cracks or chaps
on the air
cleaner shell
Poor performance, excessive
intake noise
Replace the air cleaner
shell
Exhaust
system
Excessive
exhaust noise
Cracks or
openings in
exhaust system
Poor performance, excessive
noise
Replace defective
components
Exhaust
system
Smoke
emanating from
exhaust
Worn rings,
worn valve
seal, choke in
on position,
carburetor too
rich
Smoke trail
Check choke position,
check carburetor, perform
compression check (if
compression low, isolate
cause and correct)
Engine
Poor engine
performance
See below
See below
See below