CSC SG250 - Fuel System and Electrical Systems; Fuel System Maintenance

SG250 Owner’s and Service Manual
www.CSCMotorcycles.com
84
Item
Symptom
Cause
Vehicle Effect
Maintenance Action
Starter
Difficult starting
Clogged air
filter,
carburetor not
adjusted
correctly,
valves too
tight, battery
low
Difficult to start engine
Check air filter, check
charging circuit, check
valves; adjust/correct as
required
Engine
Overheating
Mud or other
debris in
cooling fins,
low oil, running
in too high a
gear, engine
running too
lean
Engine overheats
Check for air leaks in intake
path, check to make sure
all fins are clear, check oil
level, check valve
adjustment.
Engine
Excessive fuel
consumption
Clogged air
filter, engine
valves not
adjusted
correctly,
carburetor not
adjusted
correctly; chain
too tight, tire
pressure low
Poor fuel economy
Check possible causes and
correct any departures
from required adjustment
setting
Engine
Missing or
sputters
Defective spark
plug, defective
coil, defective
ignition wiring
Missing
Inspect and replace
defective component(s).
Fuel System
The fuel system consists of the fuel tank, fuel mounting hardware, fuel hoses, the fuel filter, the fuel
petcock, the carburetor, fuel vapor vent lines, and the fuel level sensor and its associated wiring. You
will need to remove the fuel tank to gain access to components located immediately underneath the
fuel tank.
The fuel filter is located in a white semi-transparent plastic
container immediately beneath the fuel petcock. This
container unscrews to provide access to the fuel container.
Close the fuel petcock before unscrewing the fuel filter
container.
Warning! Make sure you close the petcock before
unscrewing the fuel filter bowl.