ZONGSHEN ZS250GY-3 Service Manual page 17

[9]Check the motor of fuel pump for running.And
clean or replace the fuel strainer.
ADVICE
Replace the fuel filter when the motorcycle
drives about 8000~10000Km.
3 The cause,trouble description and repair method of fuel supply system
Table 4-1
component
cause
description
Fuel tank body is
broken.
The venthole of fuel
fuel tank
tank cap is blocked.
Fuel tank is
deformed.
oil-filter screen is
dirty or small holes
are blocked.
The fuel pump body
is blocked.
The motor of fuel
fuel pump pump does not run
Fuel pressure
regulator is blocked.
Fuel pressure
regulator is normally
open.
Maintenance of Fuel Supply System
trouble description trouble description of motorcy
of component
leakage of fuel tank
Fuel supply is not
Motorcycle cannot start.
good.
Fuel tank is The appearance of motorcycle
accidented. is bad.
Motorcycle is hard to be
started or cannot be started.
Fuel supply is not
The engine power is not
good.
enough and the idle speed is
not stable.
Fuel supply is not
Motorcycle cannot be started.
good.
Fuel can not be
Motorcycle cannot be started.
supplied.
Fuel can not be
Oil duct is cracked
back.
Motorcycle is hard to be
started or cannot be started.
The pressure of oil
The engine power is not
supply is low.
enough and the idle speed is
not stable.
check the fuel pump
repair method
cle
Repair or replace
fuel tank.
Unblock the
venthole of fuel
tank cap.
Repair or replace
fuel tank.
Clean oil-filter
screen.
Clean or replace
fuel pump.
Replace the
motor.
Clean or replace
the pump
assembly.
13