Hisun HS800 - Multec 3.5 Injectors

Engine Management System
7-5
Maintenance service and Repair
ECU is a non-serviceable part. Once there
are problems, it’s important to first
determine if the problem is caused by
software/calibration. If it is caused by
software/calibration, please refer to
software/calibration, reflashing procedure.
In the event of ECU hardware failure or
malfunction (during warranty period only)
the ECU should be sent back to the
vehicle manufacturer giving complete
details of the ECU Part No, Serial number,
Vehicle Model & Make, manufacturing
Date,
Total kms or miles on the vehicle, Location
of use, Vehicle No, Date of return.
ECU Handling
Do Not
• Place the ECU close to any exhaust
pipe or heat source when removed.
Excessive heat could reduce the
lifespan of the ECU.
• Allow water, oil or any other liquids
close to the ECU. This is an
electrical component that is easily
damaged by fluids.
• Allow mud or debris to accumulate
on the surface of the ECU. Because
it is a closed electrical unit mud or
debris will cause excessive heat
and adversely affect the ECU.
• Clean with any solvent or corrosive
liquid as this will damage the
housing of the ECU.
Take extreme care of the ECU as this is
the brain for the system functioning
properly is critical to the running of the
UTV.
Multec 3.5 Injectors
The Multec 3.5 Fuel Injector is an
electromechanical device. A magnetic field
is generated as voltage is applied to the
solenoid coil. The resulting magnetic force
lifts the core assembly, overcoming
manifold vacuum, spring force, and fuel
pressure, allowing fuel to pass through the
ball and seat interface to the director.
As the fuel passes through the director, an
atomized spray is developed. The injector
closes when the voltage is removed,
cutting off the fuel flow.
Fuel Injector Handling
Do Not
• Reuse injector seal rings.
• Dip injectors into lubricants
• Cycle injectors repeatedly without
fuel pressure.
• Actuate a suspected high leak rate
injector.
• Allow water to enter the fuel system
from air lines during leak checks.
• Contact or apply load to the injector
tip during installation.
• Pound injectors into the manifold
during assembly.
• Do not use a dropped injector.
• Replace the injector with any other
part number not recommended for
this application.