1. Manuals
  2. Brands
  3. niu Manuals
  4. Scooter
  5. MQI GT
  6. Service manual

niu MQI GT Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
MQI GT Scooter

Dual batteries + Intelligent Charger(TBD)
Service Manual
Jiangsu Niu Electric Technology Co. Ltd
V1.0.0
1

Advertisement

Table of Contents
loading

Related Manuals for niu MQI GT

Summary of Contents for niu MQI GT

  • Page 1 MQI GT Scooter
 Dual batteries + Intelligent Charger(TBD) Service Manual Jiangsu Niu Electric Technology Co. Ltd V1.0.0...

  • Page 2: Foreword

    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.
  • Page 3 Importance Safety Notes Make sure that you have completely understood basic workshop operation safety procedures and taken on proper protective clothes and are provided with safety equipment. Extra attention should be paid to the following in the implementation of a maintenance task: Read all the relevant instructions before operation, and make sure that you have necessary tools, •...

  • Page 4: Table Of Contents

    Contents Foreword Maintenance Rules and Important notes Cable connector inspection Scooter Identification Specifications Part Names Parts Removal and Installation Procedure Front Wheel Front Fork Steering Handlebar Rear Wheel/ Rear Suspension Brake System Lithium battery/charger BCS and Fast Charger Electrical System Electronic components Diagnostic Code Regular Maintenance Checklist...
  • Page 5 Important notes 1．Please use original parts made by Niu. Use of components that are not in compliance with design specifications by Niu Company may cause damages to the scooter. 2．Maintenance operations can be performed only with metric tools. The metric bolts, nuts and screws can not be interchanged with British fasteners.

  • Page 6: Cable Connector Inspection

    Cable connector inspection Loose cables constitute a risk to electric safety. Cables should be checked after their clamping to • ensure electric safety. Bending of cable clamps towards welding points is not allowed. • Cables are bound at designated positions. •...

  • Page 7: Scooter Identification

    Scooter Identification Vehicle serial number (SN) is in the user manual
 • The scooter frame identification code (VIN) is made on the front central panel.
 • 
 
 
 
 
 
 
 
 
 
 The motor code is made at left side of the wheel-hub motor.
 
...

  • Page 8: Specifications

    Overall specifications： Item Specifications LeMGTh × width × height 1969x738x1160mm Wheelbase 1380mm Complete vehicle kerb mass 109Kg Dimensions Ground clearance of the 815mm seat cushion Ground clearance 180mm Type of the scooter frame The pedal type made with combined Scooter frame welding of panels and pipes Specifications of the front 90/90-14 (NGTS Same)
  • Page 9 Specifications of the motor controller system Item Specifications Motor type Brushless permanent-magnet motor Controller type FOC vector control Rated voltage DC48V Motor Rated power 3000W Maximum motor power 3200W Maximum motor torque 138 NM Rated voltage DC48V Controller Maximum input current Specifications of the battery/charger Item Specifications...
  • Page 10 Specifications of the braking system Item Standard value (mm) Minimum Thickness(mm) Diameter of the front brake disc φ220mm Thickness of the front brake disc Thickness of the front brake pad brake fluid DOT3 or DOT4 Diameter of the rear brake disc φ180mm Thickness of the rear brake disc Thickness of the rear brake pad...

  • Page 11: Part Names

    Part Names Scooter body Left/Right Body Panel Saddle Front Panel Rear Left/ Right Handrail Headlight Tail light Front lower lip Front Fender Rear Fender Front lower panel Left/Right Central Left/Right Side Cover Panel Rear Central Cover V1.0.0...

  • Page 12: Parts Removal And Installation Procedure

    Parts Removal and Installation Procedure Procedures for removal and installation of scooter body panels are described in this section. The ignition switch and main switch (if applicable) must be turned to OFF before disconnection or connection of electric units, when the storage battery has been installed onto the scooter. Note •...
  • Page 13 Headlight V1.0.0...
  • Page 14 Section 2 2.1 Front Body upside cover: remove three screws then pull out it. Mount: Follow as the reverse order. Front Body Front Body upside cover Front Body lower lip V1.0.0...
  • Page 15 GPS Antenna Related Screws: M5*12 Qty:7 pcs Tighten Torque: 4-7 N*M V1.0.0...
  • Page 16 Lock Controller V1.0.0...
  • Page 17 Remove the bottom Related Screws: M6*20 (40201078) panel by unscrew the 8 Qty:8 pcs screws Tighten Torque: 1-2N*M Mount: Follow as the reverse order. V1.0.0...
  • Page 18 Remove the front guard panel Mount: Follow as the reverse order. Related Screws: ST4.8X16 （40206006 ） Qty:6 Pcs Tighten Torque: 1-2N*M V1.0.0...
  • Page 19 Horn DC to DC Lock Controller ACC(Fast Charge) V1.0.0...
  • Page 20 Dashboard Removal Section 3 Dashboard 3.1 Dashboard Cover Block remove 8 screws then pull left dashboard cover and rear cover out. Mount: Follow as the reverse order. V1.0.0...
  • Page 21 V1.0.0...
  • Page 22 Rear Part Section 4 Seat and Plug lock bracket 4.1 Seat: Remove six screws then pull out it. 4.2 Plug Lock bracket: Remove the two screws Mount: Follow as the reverse order. V1.0.0...
  • Page 23 Fan Controller Section 5 5.1 Fan: Remove 4 screws then remove it. 5.2 Fan Controller: Disconnect the connector. Disconnect the charging port and 485 port. Mount: Follow as the reverse order. Related Screws: M4*12 (40201078) Qty:8 pcs Tighten Torque: 1-2N*M V1.0.0...
  • Page 24 Handrail 5.3 Remove four Hexagon flange bolts marked in the guide photo 5.4 Pull out the Handrail V1.0.0...
  • Page 25 Section 6 6.1 Central guard panel plate: Remove it by unscrewing two screws. 6.2 Central guard panel: Remove it by unscrewing six screws. And disconnect the connector of left and right decoration lamps. Mount: Follow as the reverse order. V1.0.0...
  • Page 26 Central guard panel Disconnect the side lamp connector and remove the central guard. V1.0.0...
  • Page 27 Rear Parts+Central Guard W/Left and right side lamp+ Rear Light Assembly V1.0.0...
  • Page 28 FOC Controller V1.0.0...
  • Page 29 6.3 Remove the BCS Mount: Follow as the reverse order. Related Screws: M5*16 (40203011) Qty:4 pcs Tighten Torque: 3-5N*M 6.4 Remove the FOC controller Mount: Follow as the reverse order. Related Screws: M5*20 (40203002) Qty:4 pcs Tighten Torque: 3-5N*M V1.0.0...
  • Page 30 Brake System Unscrew one cross recessed pan head bolt and two Hexagon flange bolts then take out front Brake System Unscrew two Hexagon socket head stepped bolts marked in the guide photo Unscrew two cross recessed pan head bolt and take out Rear Brake System V1.0.0...
  • Page 31 Section 7 Side Stand and Side Stand Switch 7.1 Unscrew the screw and unplug the connector marked in guide photo to take out the side stand switch 7.2 Unscrew the side stand screw and take out the side stand and spring （spring hook on the red circle when installation) V1.0.0...
  • Page 32 Section 8. Front Fender and Rear Fender 8.1 Unscrew two Hexagon flange bolts on the left and right sides then take out the Rear Fender 8.2 Unscrew two Cross recessed medium pan head bolts on the left and right sides then take out the Front Fender V1.0.0...
  • Page 33 Section 9. Motor 9.1 Unscrew two hexagon flange bolts on the left and right side 9.2 Remove the motor connectors on FOC controller V1.0.0...
  • Page 34 Section 9. Motor 9.3 Unplug the motor hall connector（ Scooters produced before 2016 Dec ) then pull out Motor V1.0.0...
  • Page 35 Front Wheel 1. Hexagon Nuts With Flange,Style2-Fine Pitch Thread 2. Front Wheel Axle sleeve 3. Front disk brake lower pump brake pad 4.Front brake lower fluid pump 5. Front brake disk 6.Front Alloy Wheel 7Front tire 8 Value 9 Front wheel axle Specifications of the front tire: 90/90-12 Installation torque value for screw 11 in the figure: 8Nm...

  • Page 36: Front Wheel

    Front Wheel Failure diagnosis The tire pressure is too low. There is air leakage from the tire. The tire pressure is insufficient. The front axle is deflected. The front wheel tire is deformed and the tire is deflected. The front wheel oscillates. The wheel is deformed.
  • Page 37 Front Fork Assembly Specifications of the Front Fork Installation torque value for screw 4 in the figure: 28Nm 1. Front left and right reflectors 2 Front Fender 3 Front fork assembly including shock absorb 4 Fluid Tube Clip 5 – 6 7 pieces of direction bearing V1.0.0...

  • Page 38: Front Fork

    Front Fork Failure diagnosis The front fork is deflected. There is an abnormal noise from the front shock absorber. Bolts on the shock absorber are loosened. The liquid in the front shock absorber is insufficient. Disassembling Remove the panel, front journal lid and front fender. Remove the steering handle assembly.
  • Page 39 Steering Handlebar Left 1. Left handle 2. Brake level 3. Left review mirror 4 left turn signal assembly 5. Fixing bracket of turn signal 6 Rear disc brake Top Fluid Reservoir 7. Combination Switch 8 Handlebar V1.0.0...
  • Page 40 Steering Handlebar Right 1.Speed regulating steering handle 2. Brake level 3. Right review mirror 4 Right turn signal assembly 5. Fixing bracket of turn signal 6 Rear disc brake Top Fluid Reservoir 7. Right Combination Switch V1.0.0...
  • Page 41 Steering Handlebar Middle 1.Dashboard Windshield 2 MGT Dashboard Assembly 3 Dashboard Bracket 4 Handlebar fixing upper block 5 Hexagon socket head stepped bolt 6 Handlebar fixing lower block 7 T-Plate Specifications of the Steering Handlebar Installation torque value for screw 16 in the figure: 52Nm Front/Rear Brake Lever free travel distance：7-15mm Twist Grip free travel distance：...

  • Page 42: Steering Handlebar

    Steering Handlebar Failure diagnosis The steering handle is difficult to turn. The steering handle bearing failed. The steering handle bearing is damaged. Steering is unstable The steering handle bearing is damaged. Disassembling Remove the left and right rear-view mirror assemblies (5) and (11). Remove the left and right grasp handle assemblies (1) and (12).
  • Page 43 Electronic Components 1. Power Lock 2. Alarm 3.DC to DC A 4. Horn 5.U3LTE ECU 6. Main harness assembly 7.LCU 8.CBS V1.0.0...
  • Page 44 Rear components 1. FOC motor controller 2 Saddle Lock 3 BCS V1.0.0...

  • Page 45: Rear Wheel/ Rear Suspension

    Rear Wheel 1. Rear disc brake pad 2 Rear disc brake lower fluid pump 3 Value 4 Rear brake disc 5 Motor (3000W) 6 Rear Tire Diameter of the rear brake disc: φ180mm Thickness of the rear brake disc: 3.5mm Operating limit: 2.5mm Torque value for Top Bolts on the rear shock absorber: 44Nm Torque value for Bottom Bolts on the rear shock absorber: 28Nm...
  • Page 46 Failure diagnosis Oscillation of the rear wheel Deformation of the motor rim Motor failure Motor un-tightened Bearing loosened or worn Insufficient tyre pressure Shock absorber softened excessively Insufficient spring elasticity Oil leakage from shock absorber No elasticity of the rear shock absorber spring Extremely low tyre pressure Shock absorber hardened excessively Shock absorber rod deflected...

  • Page 47: Brake System

    Brake System Maintenance instruction Note • There should be no oil stains on the brake assembly in installing or removal. • The cleaning should be made with a specified detergent to avoid reduction of the brake performance. • Oil stains on the brake pad will result in reduction of the brake performance •...
  • Page 48 Failure diagnosis Failure of the hydraulic disc brake Check the brake liquid level in the main brake pump reservoir. The brake liquid level is below the lower limit The brake liquid level is above the lower limit scale in the reservoir. scale in the reservoir.
  • Page 49 Failure diagnosis The brake performance is not good. The brake is not adjusted properly. The brake pad and brake disc are worn. The brake assembly is not installed properly. The brake pad and brake disc are contaminated. The brake responds slowly or the handle is tight. The brake is not adjusted properly.
  • Page 50 Brake System Brake liquid change/air discharging (for the disc brake type) Drainage of the brake liquid The paint coatings, plastics or rubber parts should be covered with cloths as good as possible to avoid splash of the brake liquid onto them in changing the system liquid or draining the liquid. There should be no foreign matters that enter into the system in liquid injection into the liquid reservoir.
  • Page 51 Brake liquid injection/air discharging The following operation steps can be performed if air discharge pumps are not available. Hold the front brake handle tightly and pressurize the system until there are no air bubbles from the liquid reservoir hole and the resistance to the front brake handle is felt. Connect the oil drainage hose to the oil drainage screw, and perform air discharging from the system as per the following steps: Check the brake liquid level frequently in air discharging to avoid air entrance into the hydraulic...
  • Page 52 Wiring Diagram V1.0.0...
  • Page 53 Circuit Diagram V1.0.0...

  • Page 54: Lithium Battery/Charger

    Lithium battery/charger Overview The charger will be generate heat during charging. It should be subject to good ventilation and radiation. The battery and charger must not be covered. They must not be close to flammable or explosive objects in charging to avoid the explosion or fire that may cause personal injuries.
  • Page 55 MGT-Battery Capacity:48V 31Ah Panasonic / 18650 Battery Pack Quantity: 2 Max Speed: 70KM/h When battery level lower than 15%, the speed will limit to 20KM/h 5.2A，Input 100~240V Output 48V 280W V1.0.0...
  • Page 56 V1.0.0...
  • Page 57 The cabling diagram of BCS Remove the 2+: Battery2 cover to check positive pole the cabling 2-: Battery2 Negative pole BCS connector with Main Harness S+: BCS output positive pole 1+: Battery1 positive pole S-: BCS output negative pole 1-: Battery1 Negative pole BCS（Battery Control System- Dual Switch Controller)
  • Page 58 Fast Charger—-TBD Charger Specification: Input: 100-240V AC, 12A max Output: 35-84V DC,12A max Operate Temperature: -10-40℃ The charger should be disconnected first from the power supply and then disconnect from the battery. The fast charger can be used onboard charging port.  ...
  • Page 59 Use H1 can query BMS info to troubleshoot for Battery pack How to use H1, please check H1 User Manual V1.0.0...
  • Page 60 BMS (Battery Management System) Description Connect H1 to Battery Pack directly, Press BMS_Info Icon to Read BMS Information Then press the screen to continue If BMS is working normal/abnormal, H1 will read Battery Pack info shown as below. Replace the BMS if OFFLINE is shown. BMS_STATE: No Load BMS Status: currently not in use ONLINE...
  • Page 61 Table of BMS STATE(BMS Status) No Load: Discharging: Charging: Over-Charged: Over-Discharged: Charging Over-Current Discharging Over-Current Over Temperature Temperature Low Other Warning(Open Circuit detected/ Difference between Cell Voltages is higher than 0.3V.If the difference value is higher than 0.05V and lower than 0.3V, BMS would automatically start voltage balance mode) Short Circuit Water Detected...
  • Page 62 V1.0.0...

  • Page 63: Electrical System

    Electrical System Motor The motor used in this scooter is an efficient brushless DC motor with a permanent magnet made of rare earths, which is integrated with the rear wheel. The motor does not require maintenance in daily riding. However, attention should be paid to the status of installation and tightening nuts on the motor shaft.
  • Page 64 Motor-3000W V1.0.0...
  • Page 65 How to replace Motor (Ref: 009) Preparation： Remove section 4 first 1. Screw up two hexagon flange bolts on the left and right side 2. Install the motor connectors on FOC controller 3. Connect the motor hall connector（ Scooters produced before 2016 Dec ) V1.0.0...
  • Page 66 FOC Controller The controller for this model makes controlling in the way that it receives the signal from speed regulation handle and controls operation of the brushless DC motor. Main protective functions 1. Current limit protection The maximum controller output current is limited to protect the motor, controller, battery and other components from being damaged by a current greater than specified.
  • Page 67 [E4]FOC controller V1.0.0...
  • Page 68 How to read FOC controller indicator flashing frequency (Ref: 001) • Turn ON the power and count how many times the indicator flashes between each interval. • If FOC controller is in good working condition, after turning ON the power, the indicator should only flash once and no more flashing FOC Controller Flashing Indicator Explanation Flashing...
  • Page 69 How to replace FOC controller (Ref: 004) V1.0.0...
  • Page 70 Speed regulating steering handle (Right) V1.0.0...
  • Page 71 DC to DC Output：12V，125W， USB output：5V2A V1.0.0...
  • Page 72 How to check DC-DC Converter power input (Ref: 015) Step 1: Turn the power ON. Step 2：Check DC voltage between the Red wire and Black（Negative）at component side. Step 3：DC voltage reading on multimeter should be same as battery voltage（~71.4V） How to check DC-DC Converter power output (Ref: 016) Step 1: Turn the power ON.
  • Page 73 OBD-10309001 Feature To Be Discussed Support 485 to CAN bus communication diagnose. V1.0.0...
  • Page 74 LCU-10305014 V1.0.0...
  • Page 75 Power Lock V1.0.0...
  • Page 76 Fan Controller-10901001 V1.0.0...
  • Page 77 Fan A Fan A V1.0.0...
  • Page 78 MGT ECU Version: V35 Built-in alarm V1.0.0...
  • Page 79 The indicator definition of ECU GPS indicator: Green flash: GPS work normal Green is always on: NO GPS Green is off: GPS doesn’t work LTE indicator: Blue flash: Communication Network normal Blue is always on: Can not connect to the network. No Signal or Signal is weak.
  • Page 80 This method only applied to scooter with activated SIM card • Log into NIU E-scooter App to check latest data update, replace ECU if data is not up to date How to replace ECU (Ref: 003) 1 Check Section 1-3 to remove the front panel and found ECU...
  • Page 81 USB Port V1.0.0...
  • Page 82 Left combination switch V1.0.0...
  • Page 83 How to check Left Combination Switch Functions（Ref: 022) Example: Check the Low Beam Step 1：Turn the power ON Step 2：Check DC voltage between PIN 6 White wire（Low Beam） and Black wire of another connector(ie Negative pin of Headlight) Step 3：DC voltage reading on multimeter should be around 12V when the corresponding switch is Other switch detection methods are the similar,check the corresponding wire and DC voltage should be around stable 12V.
  • Page 84 Right combination switch V1.0.0...
  • Page 85 How to check Right Combination Switch Functions（Ref: 021) example: Check the Hazard Light Switch Step 1：Turn the power ON Step 2：Check for closed circuit between PIN 5 Blue/White wire（Hazard Lights) and Black wire Step 3：the multimeter should beep if the circuit is closed. Other switch detection methods are the similar.
  • Page 86 Headlight Power: High Beam:14.2W Low Beam:7.6W Position Lamp:3W Daylight: 3.4W V1.0.0...
  • Page 87 How to check Headlight Power Input（Ref: 023) Step 1：Turn the power ON Step 2：Check DC voltage between Red-White wire and Black wire Step 3：DC voltage reading on multimeter should be ~12V If 12V exist but Headlight does not illuminate, replace Headlight If 12V does not exist, harness is broken V1.0.0...
  • Page 88 Turn Signal Lamps Left/Right turn signal Component Name Connector Code lamp J7-A Disassembling order：Section 2>3 Connector Definition Color Definition Yellow Left turn signal lamp Black Negative electrode Component Name Right turn signal lamp Connector Code J8-A Disassembling order：Section 2>3 Connector Definition Color Definition Light blue Right turn signal lamp Black Negative electrode...
  • Page 89 How to check Left turn signal lamp（Ref: 024) Step 1：Make the Flasher connector PIN2(Grey) and PIN3(Red/White) shorted with a short wire.
 Step 2: Disconnect the Left turn signal lamp connector Step 3: Turn the power ON and then turn the left turn switch ON Step 4: Check DC voltage between Yellow wire and Black wire on harness side Step 5: DC voltage reading on multimeter should be ~12V How to check Right turn signal lamp（Ref: 025)
  • Page 90 Side Lamp 12V LED V1.0.0...
  • Page 91 Lock Controller V1.0.0...
  • Page 92 Saddle Lock V1.0.0...
  • Page 93 V1.0.0...
  • Page 94 Battery Compartment Hall V1.0.0...
  • Page 95 Tail Light Component Name Tail Light Connector Code J9-A Disassembling order：Section 2>3 Connector Definition Color Definition Black Negative electrode Yellow Left lamp signal wire Red and white Power cord (12V) Violet Brake lamp Light blue Right lamp signal wire V1.0.0...
  • Page 96 How to check Tail Light power input（Ref: 026) Step 1：Turn the power ON Step 2：Check DC voltage between Red/White wire and Black wire on harness side Step 3：DC voltage reading on multimeter should be around~12V Step 4：Press the brake，DC voltage reading on multimeter should also be around~12V If 12V exist and Tail light does not illuminate，then replace the taillight V1.0.0...
  • Page 97 Side Stand Component Name Side Stand Switch Connector Code Disassembling order：Section 4>5>6>7 Connector Definition Color Definition Power cord（5V） Yellow Side Stand Switch signal Black Negative electrode Manufactured From 05-2016 to 12-2016 Manufactured From 01-2017 ~current V1.0.0...
  • Page 98 Prop Stand: If the prop stand is extended,the electronic motor is cut-off. It cannot be restarted until the prop stand is moved into its retracted position. How to check Side Stand Switc（Ref: 027) Step 1: Disconnect the connector to Check power input; Check DC voltage between Red wire and Black wire on harness side, Voltage reading should be ~5V Step 2: Turn the power ON...
  • Page 99 Horn Component Name Horn Connector Code Disassembling order：Section 2>3 Connector Definition Color Definition Green Horn Black Negative electrode V1.0.0...
  • Page 100 Brake Switch Component Name Left/right brake Switch Connector Code J16-B Disassembling order：Section 2>3 Connector Definition Color Definition Power cord(12V) Violet(harness side） Left/right brake handle signal wire V1.0.0...
  • Page 101 How to check Brake Switch（Ref: 028) Step 1：Disconnect the Red and Black wires of the Brake Switch connector Step 2：Connect Multimeter Positive and Negative pins to the connectors and Set multimeter to test closed circuit mode, then pull the brake, the multimeter should beep if the Brake Switch is working.
  • Page 102 Charging Port Component Name Charging Port Connector Code J10-A Disassembling order：Section 4 Connector Definition Color Definition Power cord (60V) Black Negative electrode Purple and Grey Communication B White and Grey Communication A Black and White 485 Earth V1.0.0...
  • Page 103 Dashboard High version- Colour TFT LCD dashboard Lower version-Black-white dashboard V1.0.0...
  • Page 104 Dashboard MGT uses a colorful LED large screen. The backlight will adjust according to the illumination intensity. When the illumination intensity is high, the backlight will be white. When it is low, the backlight will be changed according to the illumination. V1.0.0...
  • Page 105 Dashboard Status in normal When the two batteries voltage difference is less than 0.8V,it would show the S icon. And the left icon battery we named the first battery is the one in battery compartment and the right icon battery we named the second battery is the one in helmet bucket.
  • Page 106 ACC( Fast Charger) Support protocol: QC2.0/3.0， Max current 3A Output:12V,3A V1.0.0...

  • Page 107: Diagnostic Code

    Diagnostic Code List V1.0.0...
  • Page 108 V1.0.0...
  • Page 109 Diagnostic Code - 10/11/12/13 on display V1.0.0...
  • Page 110 Diagnostic Code - 30 on display V1.0.0...
  • Page 111 Diagnostic Code - 31 on display V1.0.0...
  • Page 112 Diagnostic Code - 32 on display V1.0.0...
  • Page 113 Diagnostic Code - 60/62/63/64/65 on display V1.0.0...
  • Page 114 Diagnostic Code - 67 on display V1.0.0...
  • Page 115 Diagnostic Code - 99 on display V1.0.0...
  • Page 116 Diagnostic Code - 110 on display V1.0.0...
  • Page 117 Diagnostic Code - 111 on display Verification V1.0.0...
  • Page 118 Diagnostic Code - 120 on display V1.0.0...
  • Page 119 Diagnostic Code - 130/131/132/133 on display V1.0.0...
  • Page 120 Diagnostic Code - 140 on display V1.0.0...
  • Page 121 Diagnostic Code - 190 on display V1.0.0...
  • Page 122 Diagnostic Code - 191 on display V1.0.0...

  • Page 123: Regular Maintenance Checklist

    Regular Maintenance Checklist Overview The scooter is set on a flat ground before operating.The scooter is inspected, tested, cleaned, adjusted, lubricated or replaced (if necessary) as per items and maintenance cycles specified in the maintenance schedule. The following items require a certain degree of the mechanical knowledge. Some items may require more technical data and tools.
  • Page 124 Regular Maintenance Checklist Power lock Lighting inspection Instrument inspection Left/Right Combination Electronic Switches Components Alarm and horn EBS energy recovery Controller inspection Wire connection and appearance Inspection for abnormal Wheel-hub motor noise Startup inspection Tolerance and deformation ECU software version FOC software version Software BMS 29Ah setting (60V29Ah pack only) V1.0.0...
  • Page 125 Regular Maintenance Checklist Inspection of the Accelerator Handle • Check the accelerator handle for smooth operating. • Check the accelerator handle for smooth opening and automatic resetting at all steering positions of the steering handle. • Check the accelerator handle cable if the accelerator handle can not be reset as usual. Inspection of Brake Pads wearing •...
  • Page 126 Regular Maintenance Checklist Inspection of Brake Lamp Switch and Front/Rear Brake • The brake switch on the brake handle can not be adjusted • Make sure that the brake lamp turns on in actual application of the brake.Replace the front/rear brake switch or other faulty components in the braking system, if turn-on of the front brake switch is not synchronous with brake application Inspection of Lamp System and Switches...
  • Page 127 Regular Maintenance Checklist Inspection of Suspension system Front suspension • Operate the front brake and check the front suspension system by pressing down the handle bar for several times to check motion of the fork. • Check the entire assembly for leakage, damages or loosened fasteners. •...
  • Page 128 Regular Maintenance Checklist Nuts, Bolts and Fasteners • Make sure that all nuts and bolts on the chassis have been tightened as per correct torque values. • Make sure that all the split pins, safety clips, hose clamps and wire cables have been placed properly and secured tightly.
  • Page 129 Regular Maintenance Checklist Inspection of Wheels and Tires • Support the scooter with the Central Stands. • Lift up the Front/Rear Wheel to check range of the free travel. • Hold the Front/Rear Wheel and try to move it leftward and rightward to check the front wheel bearing for wearing.
  • Page 130 Regular Maintenance Checklist Steering column bearing • Support the scooter with Central Stands, and lift up the Front Wheel to make it off the ground. • Make sure that scooter handles can be turned freely to left and right sides. •...
  • Page 131 V1.0.0...

Table of Contents