V1.0.0
2
Foreword
Key points in maintenance of Niu NGT are described in this maintenance manual.
Preparations in the maintenance manual include notes to all operations. Please read the manual
carefully before operating.
Key points in the inspection and adjustment, includingmaintenance methods for scooter safety and
component performance that are applied from regular examinations, are described.
Chapters are edited with disassembly diagrams, system figures and instructions about the
maintenance and failurediagnosis.
Note:
Modifications of scooter version or structure as well as photos, pictures or instructions in the manual
are referred to physical objects without further notice.
Maintenance Information
The maintenance and reparation information contained in this manual is for technical specialists only.
Maintenance or reparation performed by those who are not trained properly and provided with
appropriate tools and equipment may cause injuries to themselves or others and also lead to
damages or unsafe conditions of the scooter.
The proper maintenance and reparation procedures, some of which require special tools and
equipment, are described in this manual. The risks in terms of personal safety and scooter operation
safety, which may be resulted from the use of components, maintenance procedures or tools not
recommended by Niu must be verified.
Please make replacement with original electric components made by Niu or equivalents that have
corresponding part numbers. We strongly recommend you not to use inferior components.
Customer Safety Notice
The proper maintenance is crucial for customer safety and scooter reliability.Any errors or omissions
in scooter maintenance may result in operating malfunctions, scooter damages or injuries.
Improper maintenance or reparation may lead to unsafe conditions under which serious injuries or
even death of your customers or other people may be incurred.
Please carefully follow the procedures and cautions in this manual and other maintenance materials.
Personal Safety Notice
This manual is used only by professional maintenance technicians, and the warning information
about multiple basic workshop safety operation procedures (such as the procedure that requires
gloves when working on hot components) is n=ot set forth herein. We recommend you not to carry
out procedures specified in this manual without readiness if you have not received the workshop
safety trainingor grasped the knowledge about maintenance safety specifications.
The followingare listed as several most importance general notes to maintenance safety. However,
we are unable to set forth the warning for each of risks that may arise from maintenance and
reparation procedures. You have to determine at your discretion whether a detail task should be
implemented.
Failure to properly follow relevant instructions and notes may result in serious injuries or even death.
Please carefully follow procedures and notes in this manual.
