Yadea Y1S Series Service Manual
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Yadea Y1S Series Service Manual

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YADEA Y1S SERIES 2021 EDITION
ELECTRIC MOTORCYCLE Y1S
SERVICE MANUAL
THIS SERVICE MANUAL IS INTENDED FOR MODELS
YD-EM279
YADEA TECHNOLOGY GROUP CO., LTD.
ALL RIGHTS RESERVED. NO COPY OF THIS MANUAL MAY
BE REPRODUCED WITHOUT WRITTEN CONSENT OF YADEA
TECHNOLOGY GROUP CO., LTD.
PREMIUM E-MOBILITY

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Summary of Contents for Yadea Y1S Series

  • Page 1 ELECTRIC MOTORCYCLE Y1S SERVICE MANUAL THIS SERVICE MANUAL IS INTENDED FOR MODELS YD-EM279 YADEA TECHNOLOGY GROUP CO., LTD. ALL RIGHTS RESERVED. NO COPY OF THIS MANUAL MAY BE REPRODUCED WITHOUT WRITTEN CONSENT OF YADEA PREMIUM E-MOBILITY TECHNOLOGY GROUP CO., LTD.

  • Page 3: Table Of Contents

    YD-EM279 Table of Contents 1. General information ……………………………………………………………03 Warnings and precautions ………………………………………………………03 1.1.1 Description …………………………………………………………………………………… 03 1.1.2 Warning label ……………………………………………………………………………… 03 Notes for disassembly ……………………………………………………………03 1.2.1 Parts disassembly ………………………………………………………………………… 03 1.2.2 Parts cleaning ……………………………………………………………………………… 03 1.2.3 Parts check ………………………………………………………………………………… 03 Inspection and maintenance ………………………………………………………04 1.3.1 Inspection item ………………………………………………………………………………...
  • Page 4 YD-EM279 3.1.5 Fault diagnosis and troubleshooting steps: …………………………………………… 17 Electric appliance ……………………………………………………………………19 3.2.1 Assembly overview ………………………………………………………………………… 19 3.2.2 Overview ……………………………………………………………………………………… 19 3.2.3 Disassembly and installation of lithium battery ………………………………………… 20 3.2.4 Disassembly and installation of controller ……………………………………………… 22 3.2.5 Disassembly and installing the immobilizer …………………………………………… 25 3.2.6 Disassembly and installation of air switch ………………………………………………...
  • Page 5 YD-EM279 4.1.3 Disassembly and installation of main support ………………………………………… 46 4.1.4 Disassembly and installation of rear armrests ………………………………………… 46 4.1.5 Disassembly and installation the Flat Fork ……………………………………………… 47 4.1.6 Disassembly and installation of the backrest bracket ………………………………… 48 4.1.7 Disassembly and installation rear footrest ……………………………………………… 48 4.1.8 Disassembly and installation of the seat cushion lock plate …………………………...
  • Page 6 YD-EM279 Suspension system …………………………………………………………………67 6.1.1 Overview ……………………………………………………………………………………… 67 6.1.2 Assembly overview ………………………………………………………………………… 67 6.1.3 Disassembly and installation Shock absorption prior to ……………………………… 67 6.1.4 Disassembly and installation of rear shock absorber ………………………………… 70 6.1.5 Steering control system …………………………………………………………………… 73 6.1.6 Disassembly and installation the cover under the instrument cover …………………...
  • Page 7 1300 mu, the annual production capacity of more than 6 million vehicles, Yadea to a steady pace to maintain rapid growth, for eight consecutive years, an increase of over 30%; The sales volume of 2014 is expected to exceed 10 billion, 503 million in 2018, 6 million in 2019 and 10 million in 2020.
  • Page 8 Our distributors must only provide parts recommended by the Company. The copyright of this manual belongs to yadea Technology Group Co., Ltd., and it is not allowed to reproduce and reproduce without the written consent of the company.

  • Page 9: General Information

    YD-EM279 1 General information Environmental protection: the matters stated here are related to environmental 1.1 Warnings and precau- protection. 1.2 Notes for disassembly tions 1.2.1 Parts disassembly Warning, caution and tips "Warning", "Caution" and "Tips” mean the following: Disassembly Warning: Procedures must be strictly followed to Parts and surrounding area shall be cleaned as avoid possible injury to personnel.

  • Page 10: Inspection And Maintenance

    YD-EM279 1.3 Inspection and maintenance 1.3.1 Inspection item nspection item Inspection content Headlamp, direction - indicator lamp, tail lamp and Normal working stop lamp Horn Normal sound when working Brake clearance between front and rear brakes Normal braking Normal tire pressure, sundries or wear on the sur- Front and rear tires face Instrumentation...

  • Page 11: Technical Parameters

    YD-EM279 1.4 Technical parameters 1.4.1 Vehicle dimensions Length: 1915（mm） Width: 670（mm） Height: 1125（mm） Center distance between front and rear wheels: 1333（mm） 1333（mm） 1915（mm） PREMIUM E-MOBILITY...

  • Page 12: Product Information

    YD-EM279 1.4.2 Product Information Product units Electric motorcycle Status Product model YD-EM279 Model name Customer name/code Export country Italy 19000304 name VIN(frame number) ☆LR4F0NJ0*M*******☆ Color Snow beads white 1.4.3 Configuration Information Basic configuration Configuration type 72V20AH 12-inch front/rear disc brake electric Configuration type motorcycle Torque (N·m)

  • Page 13: Tightening Torque Table For Key Parts Of The Vehicle

    YD-EM279 1.4.4 Tightening torque table for key parts of the vehicle Tightening torque (N·m) Fastener name Thread diameter 6.8（6） 8.8（8） 2～3 2～3 3.5～6 4～7 6～9 7～11 16～21 18～25 28～36 30～40 Bolt, Nut M10×1.25 32～40 35～45 42～52 45～55 M12×1.25 48～56 50～60 60～70 55～65 M14×1.5...

  • Page 14: Vehicle Identification Number

    YD-EM279 1.5 Vehicle identification number 1.5.1 VIN code VIN position: Located on the right side of the frame.。 1.5.2 Motor model Motor model position: Located in front of the rear wheel. 1.5.3 Vehicle Code Vehicle code location: Located on the rear frame of the storage bin. PREMIUM E-MOBILITY...

  • Page 15: Power System

    - mounted motor. 2.1.1.1 Composition of powertrain assembly The powertrain of Y1S series electric two-wheeled motorcycles mainly includes: electric drive unit, energy storage unit and control unit. The main components are: wheel motor, lithium-ion power battery and integrated vehicle controller. 2.1.1.2...

  • Page 16: Disassembly And Installation Of Motor

    YD-EM279 2.1.3 Disassembly and installation of motor 2.1.3.1 Service tools Cross screwdriver ● Straight screwdriver ● Sleeve 8mm ● Sleeve 21mm ● 2.1.3.2 Disassembly and installation Disassembly High voltage risk: This part is a high voltage part with high voltage risk. The user is prohibited to touch this part at will, so as not to cause electric shock and other casualties.
  • Page 17 YD-EM279 Disassembly Flat fork cover → 88 pages ● Disassembly bolt - arrow - . ● Disassembly nut - arrow A - . ● Disassembly bolt - arrow - . ● Disassembly nut - arrow A - . ● Disassembly the motor. ●...
  • Page 18 YD-EM279 2.1.3.3 Connector interface definition Connector color function color function black blue Hall signal green Hall signal Power + Yellow Hall signal 2.1.3.4 Motor fault maintenance determination method Function definition: the motor is a device that converts electrical energy into mechanical energy and controls the vehicle speed with the controller.
  • Page 19 YD-EM279 (2) Motor locked (stuck): Disconnect the power lock and the cable for Stuck inspection in power - off status. Rotate the Check the brake motor manually to check the rotation of the motor Non - stuck Abnormal controller. Replace the controller and repeat the inspection as above.

  • Page 20: Electric System

    YD-EM279 3 Electric system General troubleshooting of vehicle Fault Phenomenon Cause analysis Troubleshooting phenomenon confirmation 1. Trun on power lock and check the 1. Charger fault charging port for voltage. If there is no voltage, the battery is faulty 2. Internal unrecoverable fault shall 2.

  • Page 21: Charger

    YD-EM279 1. The battery is under- charged due to a charger fault 2. The cycle life of the bat- 1. Overhaul or replace the charger Reduced range 2. Test or replace the battery tery decays after one Reduced range 3. Check tire pressure for severe 3.

  • Page 22: Connector Interface Definition

    YD-EM279 Input undervoltage protec- Input undervoltage protection when the input AC voltage is 90V tion Input overvoltage protection Input overvoltage protection when the input AC voltage is 260±10V Output overcurrent protec- ≥ 110%Iout tion When the charger is saturated and the battery is still connected with the charger after Recharge prevention the power cord is unplugged, the power in the battery will not recharge the charger Timed off...

  • Page 23: Charger Fault Maintenance Determination Method

    YD-EM279 Interface style Pin function description Color Remarks Positive 1.5 square PIN1 and PIN4 are internally shorted Negative 1.5 square Black PIN3 and PIN8 are internally shorted ON signal Shorted internally to PIN1 CANH 0.3 square Black CANL 0.3 square White CRG signal Shorted internally to PIN3...
  • Page 24 YD-EM279 Check in power - off status: Appearance of charging socket of charger: no fracture, deformation, oxidation, corrosion, or trace of serious discharge arc in the wire. Appearance of charging socket of electric vehicle: no fracture, deformation, oxidation, corrosion, or trace of serious discharge arc. 1.

  • Page 25: Electric Appliance

    YD-EM279 3.2 Electric appliance 3.2.1 Assembly overview 1. Air switch 2. Controller 3. Anti-theft device 4. Motor 2 12 5. Lithium battery 1 6. Battery holder 2 11 7. Lithium battery 2 2 10 8. GPS 9. Horn 10. Converter 11.

  • Page 26: Disassembly And Installation Of Lithium Battery

    The battery electrolyte is highly acidic and shall be avoided on clothing or other fibers. The splashing elec- ● trolyte shall be cleaned immediately with a large amount of water. Environmental protection: Old and waste batteries shall be recycled by Yadea professional departments. ● Caution: There is no interference between the vehicle body and battery conductor.
  • Page 27 YD-EM279 3.2.3.2 Fault diagnosis and on - board maintenance Visual inspection Check for obvious damage, such as electrolyte leakage. In case of damage, replace or repair the battery. (1) Check whether the DC/DC fuse is blown out. (2) Check the line for damage. (3) Connect the voltmeter and ammeter.

  • Page 28: Disassembly And Installation Of Controller

    YD-EM279 1. Too high ambient tem- perature and poor ventila- 1. Disconnect the battery and tion place it in a cool and ven- 1. Vehicle power failure 2. The charger is not suitable tilated place for a period of 2. Charger trouble light and the charging current is Charge overheat pro- time...
  • Page 29 YD-EM279 Disconnect the other wiring harnesses of the ● controller.。 Dismantle unload bolt - arrow -. ● Disassembly the controller - 1 -. ● Installation Installation is carried out in reverse order of disassembly. 3.2.4.4 Connector interface definition Interface style Function Function Hall signal (blue)
  • Page 30 YD-EM279 3.2.4.5 Controller fault maintenance determination method Function definition: as a component for electric vehicle energy management and control signal processing, it controls the motor speed and has the self - test functions of undervoltage, current - limiting and overcurrent protection, ride mode and vehicle electrical components.

  • Page 31: Disassembly And Installing The Immobilizer

    YD-EM279 (3) Throttle check: Turn the throttle to the maximum and Abnormal measure the voltage of the throttle signal voltage Check the throttle wiring loop line to ground with the DC gear of the multimeter, which shall be 0.8 - 3.6V Normal voltage Judge throttle OK 3.2.5 Disassembly and installing the immobilizer...
  • Page 32 YD-EM279 3.2.5.3 Connector interface definition Function Function Interface style (black) CAN + CAN - 18 1 Right turn signal Candlestick 17 2 Left turn signal 12V input 16 3 12V output PUSH picks up the key 15 4 Solenoid valve output Lock the motor signal 14 5 13 6...

  • Page 33: Disassembly And Installation Of Air Switch

    YD-EM279 3.2.6 Disassembly and installation of air switch 3.2.6.1 Overview The air switch controls the vehicle power supply. 3.2.6.2 Service tools Cross screwdriver ● Straight screwdriver ● 3.2.6.3 Disassembly and installation Disassembly Park the vehicle on the level road and support the main support. ●...

  • Page 34: Disassembly And Installing The Converter (Integrated Usb)

    YD-EM279 3.2.7 Disassembly and Installing the Converter (Integrated USB) 3.2.7.1 Overview The converter is installed in the head of the electric vehicle, mainly to convert the high - voltage DC cur- rent of the power battery into stable low - voltage DC current, which is used to provide the 12V lighting power supply of the vehicle and to assist the floating charging of the battery.

  • Page 35: Disassembly And Installation Of Gps Positioner

    YD-EM279 3.2.7.5 Converter fault maintenance determination method Function definition: convert the high-voltage DC current of the power battery into stable low-voltage DC current, which is used to provide the 12V lighting power supply of the vehicle and to assist the floating charging of the battery. Common faults: the horn not tooted, the light not on 3.2.7.6 Fault diagnosis and troubleshooting steps...

  • Page 36: Disassembly And Installation Of Horn

    YD-EM279 3.2.9 Disassembly and installation of horn 3.2.9.1 Service tools Cross screwdriver ● Hex wrench M10 ● 3.2.9.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● support the main bracket. Close the key and pull it out. ●...
  • Page 37 YD-EM279 No ringing: the horn does not ring after the horn button is pressed. (1) Input voltage check: Remove the horn, trun on power lock and No 12V out- 1. Terminal check check whether the horn connector input end has 12V voltage input with the DC voltage 2.

  • Page 38: Disassembly And Installation Of Usb Interface

    YD-EM279 3.2.10 Disassembly and installation of USB interface 3.2.10.1 Service tools Cross screwdriver ● Straight screwdriver ● 3.2.10.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● support the main bracket. Close the key and pull it out. ●...

  • Page 39: Disassembly And Installation Of Instrument

    YD-EM279 3.2.12 Disassembly and installation of instrument 3.2.12.1 Overview The LCD screen of the instrument adopts two backlight modes, day and night. Under strong light background, the display content of the instrument can be clearly seen. Under dark environment, the display screen enters the eye - protection safety mode.

  • Page 40: Disassembly And Installation Combination Switch

    YD-EM279 3.2.12.5 Connector interface definition Connector Interface definition Color CAN - H Blue/Black + 12V Black ACC +60V Purple/white Lnput 2 Yellow/White CAN - L Green/White High beam Blue Lnput 1 Blue/White Green Left turn signal Orange Right turn signal Light blue Smart Keyman Brown/Red...

  • Page 41: Disassembly And Installation The Handlebars

    YD-EM279 3.2.13.3 Connector interface definition Left combination switch Right combination switch Connector Interface Interface Color Color definition definition Flasher Gray/QVR 0.3 Yellow white/qvr 0.3 Turnbar power Horn Purple/QVR 0.5 Red white/qvr 0.3 Green /QVR 0.5 Green/qvr 0.3 Turnbar power Turn left Orange/qvr 0.3 Black white/qvr 0.3 Turn right...
  • Page 42 YD-EM279 3.2.14.4 Throttle fault maintenance determination method Function definition: achieve speed control through the handle rotation output of about 0.8V ~ 4.2V continuous linear change voltage signal. Common fault: throttle failure (no response when turning the throttle) 3.2.14.5 Fault diagnosis and troubleshooting steps (1) Input signal check: No input sig- performance check: test the input signal voltage...

  • Page 43: Lighting

    YD-EM279 3.3 Lighting Overview The lighting signal devices, including the headlight and taillight (registration plate lamp), etc., are mainly used to pro- vide illumination for the driver and alert other vehicles when driving at night to ensure driving safety. The signal devices, including the direction indicator lamp, horn and stop lamp, are used to indicate the driving state of the vehicle for the driver and relevant personnel, and express the driver's operation intention through sound and light signals.
  • Page 44 YD-EM279 Disassembly nut - arrow -. ● Disconnect the connector. ● Disassembly the headlights - 1 -. ● Disassembly nut - arrow -. ● Disconnect the connector. ● Disassembly the headlights and headshades - 1 -. ● Disassembly nut - arrow -. ●...

  • Page 45: Disassembly And Installation The Headshade

    YD-EM279 3.3.2.4 Connector interface definition Connector Interface definition Color High beam (-) Blue Front position light (-) palm tree Low beam (-) White Positive Electrode (+12V) Black 3.3.3 Disassembly and installation the headshade 3.3.3.1 Service tools Cross screwdriver ● 3.3.3.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ●...

  • Page 46: Disassembly And Installation The Front Turn Signals Lamp

    YD-EM279 3.3.5 Disassembly and installation the front turn signals lamp 3.3.5.1 Overview When the electric vehicle needs to turn, the direction indicator lamp can issue a yellow flashing signal through the central control to alert the turn. 3.3.5.2 Service tools Cross screwdriver ●...

  • Page 47: Disassembly And Installation The Rear Turn Signals Lamp

    YD-EM279 3.3.6 Disassembly and installation the rear turn signals lamp 3.3.6.1 Overview When an electric vehicle needs to be steered, the central control can make the turn signal emit a yellow flashing signal, reminding others that the car is about to turn. 3.3.6.2 Service tools Cross screwdriver ●...

  • Page 48: Disassembly And Installation Of Rear Tail Lights

    YD-EM279 3.3.7 Disassembly and installation of rear tail lights 3.3.7.1 Overview The rear lamp is used to show the position of the vehicle to the rear when driving at night. 3.3.7.2 Service tools Cross screwdriver ● 3.3.7.3 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ●...

  • Page 49: Wiring Harness

    YD-EM279 3.4 Wiring harness 3.4.1 Overview The vehicle wiring harness is mainly the cable. 3.4.2 Assembly overview 1. Cable 3.4.3 Disassembly and installation of cable 3.4.3.1 Service tools Cross screwdriver ● 3.4.3.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ●...
  • Page 50 YD-EM279 Disconnect the connector. ● Disconnect the retention card - arrow - . ● Disconnect the connector. ● Disconnect the retention card - arrow - . ● Disconnect connector - arrow A -. ● Disconnect the retention card - arrow - and ●...

  • Page 51: Body System

    YD-EM279 4 Body system 4.1 Brackets 4.1.1 Assembly overview 1. Backrest bracket 2. Rear armrest 3. Flat fork 4. Rest your feet 5. Main bracket 6. Side brackets 7. Front resting feet 4.1.2 Disassembly and installation of side support 4.1.2.1 Service tools Straight screwdriver ●...

  • Page 52: Disassembly And Installation Of Main Support

    YD-EM279 4.1.3 Disassembly and installation of main support 4.1.3.1 Service tools Hexagonal socket 6mm ● Straight screwdriver ● 4.1.3.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road and support ● the side brackets. Disassembly the main bracket bolt - arrow - . ●...

  • Page 53: Disassembly And Installation The Flat Fork

    YD-EM279 Disassembly the main bracket fixing bolt - arrow - . ● Disassembly the rear armrest - 1 -. ● Installation Installation is carried out in reverse order of disassembly. 4.1.5 Disassembly and installation the Flat Fork 4.1.5.1 Service tools Hexagon 10mm ●...

  • Page 54: Disassembly And Installation Of The Backrest Bracket

    YD-EM279 4.1.6 Disassembly and installation of the backrest bracket 4.1.6.1 Service tools Sleeve 10mm ● 4.1.6.2 Disassembly and installation Disassembly ● Park the vehicle on a horizontal road surface to ● support the main bracket. ● Open the rear seat cushion. → Page 59 ●...

  • Page 55: Disassembly And Installation Of The Seat Cushion Lock Plate

    YD-EM279 4.1.8 Disassembly and installation of the seat cushion lock plate 4.1.8.1 Service tools Sleeve 10mm ● 4.1.8.2 Disassembly and installation Disassembly LengthPark the vehicle on a horizontal road surface ● to support the main bracket. Close the key and pull it out. ●...

  • Page 56: Body Trim

    YD-EM279 5 Body trim 5.1 Exterior trim 5.1.1 Assembly Overview 1. Center Cover 2. Seat cushion 3. Rear seat cushion 4. Shelf cover 5. Backrest shell 6. Shelf side panels 2 18 7. Shelf baseplate 2 17 8. License plate lamp 2 16 Fixing plate 9.

  • Page 57: Disassembly And Installation Of Front Wall

    YD-EM279 Remove the bolt - arrow -. ● Remove the front fender - 1 -. ● Installation Installation is carried out in reverse order of disassembly. 5.1.3 Disassembly and installation of front wall 5.1.3.1 Service tools Cross screwdriver ● 5.1.3.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ●...

  • Page 58: Disassembly And Installation Of Front Wall

    YD-EM279 5.1.4 Disassembly and installation of front wall 5.1.4.1 Service tools Cross screwdriver ● 5.1.4.2 Disassembly and installation Disassembly Park the vehicle on the level road and support the ● main support. Close the key and pull it out. ● Open the seat cushion and turn off the air switch.

  • Page 59: Disassembly And Installation Of The Storage Box

    YD-EM279 Disassembly screw - arrow - . ● Disassembly the internal windshield - 1 -. ● Installation Installation is carried out in reverse order of disassembly. 5.1.5 Disassembly and installation of the storage box 5.1.5.1 Service tools Cross screwdriver ● 5.1.5.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to...

  • Page 60: Disassembly And Installation Of Lock Set

    YD-EM279 5.1.6 Disassembly and installation of lock set 5.1.6.1 Service tools Cross screwdriver ● 5.1.6.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● support the main bracket. Close the key and pull it out. ●...

  • Page 61: Disassembly And Installation Of Pedal

    YD-EM279 5.1.8 Disassembly and installation of pedal 5.1.8.1 Service tools Sleeve 10mm ● 5.1.8.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● support the main bracket. Disassembly the internal windshield. → page 52 ● Disassembly the side panels.

  • Page 62: Disassembly And Installation The Rear Strip

    YD-EM279 Rest the feet after disassembly. → Page 48 ● Disassembly screw - arrow A -. ● Disassembly the bolt - arrow B -. ● Disassembly the foot pedal and left/right rear strip. ● Disassembly screws - arrows A and B - . ●...

  • Page 63: Disassembly And Installation The Center Cover

    YD-EM279 5.1.10 Disassembly and installation the Center Cover 5.1.10.1 Service tools Cross screwdriver ● 5.1.10.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● support the main bracket. Close the key and pull it out. ●...

  • Page 64: Disassembly And Installation Of Seat Cushions

    YD-EM279 5.1.12 Disassembly and installation of seat cushions 5.1.12.1 Service tools Sleeve 10mm ● 5.1.12.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● support the main bracket. Open the seat cushion. ● Disassembly nut - arrow -. ●...

  • Page 65: Disassembly And Installation Of Rear Seat Cushions Service Tools

    YD-EM279 5.1.14 Disassembly and installation of rear seat cushions Service tools Sleeve 10mm ● 5.1.14.1 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● support the main bracket. Open the seat cushion. ● Disassembly bolt – arrow -. ●...

  • Page 66: Disassembly And Installation Of Shelf Baseplates

    YD-EM279 5.1.16 Disassembly and installation of shelf baseplates 5.1.16.1 Service tools Sleeve 10mm ● 5.1.16.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● support the main bracket. Disassembly screws – arrows -. ● Disassembly the shelf baseplate – 1 - . ●...

  • Page 67: Disassembly And Installation The Side Panels

    YD-EM279 Disassembly screws – arrows -. ● Disassembly bolt – arrow A -. ● Disconnect rear turn signal and rear tail light ● connector – arrow -. Disassembly the shelf side panels left, right and ● rear turn signals and rear tail lights. Disassembly the shelf side panels.

  • Page 68: Disassembly And Installation 后挡泥板

    YD-EM279 5.1.19 Disassembly and installation Rear fender 5.1.19.1 Service tools Sleeve 10mm ● 5.1.19.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● ● support the main bracket. Disassembly screw - arrow - . ● Disassembly bolt –...

  • Page 69: Interior Trim Parts

    YD-EM279 5.2 Interior trim parts 5.2.1 Assembly overview 1. Rear inner fender 2. Base plate 3. Front inner fender 5.2.2 Disassembly and installation of the front inner fende 5.2.2.1 Service tools Cross screwdriver ● Sleeve 10mm ● 5.2.2.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ●...
  • Page 70 YD-EM279 Disassembly screw - arrow - . ● Disassembly screw - arrow - . ● Disconnect the harness card - arrow - . ● PREMIUM E-MOBILITY...
  • Page 71 YD-EM279 Disassembly screw - arrow - . ● Disassembly the front inner fender and base plate. ● Disassembly screw - arrow - . ● Disengage the front inner fender or baseplate. ● Installation Installation is carried out in reverse order of disassembly. PREMIUM E-MOBILITY...

  • Page 72: Disassembly And Installation Of The Frame Baseplate

    YD-EM279 5.2.3 Disassembly and installation of the frame baseplate 5.2.3.1 Service tools Cross screwdriver ● Sleeve 10mm ● 5.2.3.2 Disassembly and installation Disassembly The Disassembly and installation method of the front inner fender is the same as that of the bottom plate. ●...

  • Page 73: Chassis

    YD-EM279 6 Chassis 6.1 Suspension system 6.1.1 Overview Working principle and composition of shock absorber When the shock absorber moves up and down, the pressure difference P between the cavities forces the shock ab- sorber oil to pass through the damping hole or valve system, generating damping force. Roles of shock absorber: A. Support the body.
  • Page 74 YD-EM279 6.1.3.3 Breakdown drawing of front fork 1. Front shock absorber 2. Steering column riser 3. Lock nut 4. Check washer 5. Upper fender 6. Upper steering bearing 7. Upper steel bowl 8. Lower steel bowl 9. Lower steering bearing 10.
  • Page 75 If the Wear of inner wall of aluminum cylin- front fork is found to be damaged or Front shock absorber jamming and not working smoothly, contact Yadea Wear of outer wall of handle tube not working dealer for inspection or replacement.

  • Page 76: Disassembly And Installation Of Rear Shock Absorber

    YD-EM279 6.1.4 Disassembly and installation of rear shock absorber 6.1.4.1 Service tools Sleeve 14mm ● Torque wrench ● 6.1.4.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● support the main bracket. Remove the bolt - arrow -. ●...
  • Page 77 YD-EM279 6.1.4.3 Breakdown drawing of rear shock absorber 1. Bushing 2. Upper joint cushion rubber 3. Upper joint 4. Hexagon nut 5. Cushion rubber 6. Damping spring 7. Piston rod 8. Hydraulic damper as- sembly 9. Adjusting seat 10. Lower bracket 6.1.4.4 Fault maintenance determination method of front fork and rear shock absorber Function definition of front fork and rear shock absorber: (1) Support the vehicle body.
  • Page 78 YD-EM279 Solutions 1. Disassembly the front shock absorber end cover and add a liner or gasket of proper length to increase the pre - pressure stop. 1. Small spring stiffness and small pre-pressure Be careful not to increase too much, other- Soft value wise the safety of driving will be affected.

  • Page 79: Steering Control System

    YD-EM279 6.1.5 Steering control system 6.1.6 Disassembly and installation the cover under the instrument cover 6.1.6.1 Service tools Hexagon 6mm ● 6.1.6.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● support the main bracket. Close the key and pull it out.

  • Page 80: Disassembly And Installation The Instrument Cover

    YD-EM279 6.1.8 Disassembly and installation the Instrument Cover 6.1.8.1 Service tools Hexagon 6mm ● 6.1.8.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● support the main bracket. Close the key and pull it out. ●...

  • Page 81: Disassembly And Installation Of Steering Bearings

    YD-EM279 6.1.10 Disassembly and installation of steering bearings 6.1.10.1 Service tools Open end wrench 34mm ● 6.1.10.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● support the main bracket. Close the key and pull it out. ●...

  • Page 82: Disassembly And Installation Of Front Wheel

    YD-EM279 6.1.12 Disassembly and installation of front wheel The method of front wheel disassembly is the same as that of front axle. 6.1.12.1 Front axle check Place the front axle on a flat surface and rotate it for checking. Deformation → Replacement Warning: Do not attempt to straighten the deformed front axle.

  • Page 83: Braking System

    YD-EM279 7 Braking system 7.1 Overview The braking mode is hydraulic braking. When braking, hold the rake handle tightly in hands and the handle pushes the piston of the main pump to extrude the brake fluid from the main pump. The brake fluid enters the calipers through the oil line;...

  • Page 84: Front Brake Composition

    YD-EM279 Disassembly the brake lever fixing bolt - arrow - . ● Disassembly the front brake handle - 1 -. ● Disassembly the front brake tubing fixing bolt - ● arrow A.-. Disconnect the card - Arrow B.-. ● Disassembly the front brake disc brake pump fixing ●...

  • Page 85: Brake Main Pump Exploded Diagram

    YD-EM279 7.3.3 Brake main pump exploded diagram 1. Brake handle mounting bolts 2. Oil tank spacer 3. Seal the septum 4. Oil cup lid 5. Oil cup lid bolts 2 pcs 6. Main pump mount 7. Mounting bolts : 21 2 pcs 8.
  • Page 86 YD-EM279 7.3.4.1 Main pump check Check the main pump for wear/scratch/damage and ● if any, replace the main pump. Check the brake fluid conveying line (main pump ● body), and in case of blockage, use compressed air to blow through. Check the oil groove isolator and replace it in case ●...
  • Page 87 YD-EM279 7.3.4.2 Assembly of brake master cylinder When the spring - 1 - is installed, the small diameter ● end shall face the master cylinder piston. Install the master cylinder thruster of the brake - 2 -. ● Clip the new E - shaped check ring - 1 - into the ●...

  • Page 88: Disassembly And Installation Of Disc Brake Of Front Brake

    YD-EM279 7.3.5 Disassembly and installation of disc brake of front brake 7.3.5.1 Service tools Hexagonal socket 6mm ● 7.3.5.2 Disassembly and installation Note: For the brake pad replacement, the caliper and brake line may not be decomposed. Remove the bolt - arrow -. ●...

  • Page 89: Breakdown Drawing Of Caliper

    YD-EM279 7.3.6 Breakdown drawing of caliper 1. Left pump body 2. Oil line seal ring ● 3. Right pump body 4. Brake pad dust cover 5. Left and right pump body bolts ● 6. Brake guide pin bolt 7. Air vent screw 8.
  • Page 90 YD-EM279 7.3.6.2 Caliper check Check the caliper body - 1 - and replace the caliper as- ● sembly in case of scratch/wear. Check the piston - 2 - and replace the caliper assembly ● in case of scratch/wear. 7.3.6.3 Caliper assembly Warning: All parts in the brake system can be cleaned with clean ●...
  • Page 91 YD-EM279 7.3.6.4 Inspection and adjustment of front and rear brakes Check the free clearance between the front and rear brake ● lugs. Warning Grasp the brake lug to the grip. If feeling soft brake, check ● whether there is air or oil leakage in the brake system. If so, remove the air or overhaul the brake system.
  • Page 92 YD-EM279 7.3.6.7 Check the brake line Check the brake line and replace it in case of scratch/damage/crack. ● 7.3.6.8 Air release (hydraulic brake system) Air release steps: (1) Add brake fluid to the master cylinder. (2) Install the oil cup cap and make sure that no brake fluid spills.

  • Page 93: Disassembly And Installationl The Front Brake Disc Disc

    YD-EM279 7.3.7 Disassembly and installationl the front brake disc disc 7.3.8 Service tools Hexagon 6mm ● 7.3.9 Disassembly and installation Disassembly Disassembly the front wheel. → page 74 ● Disassembly Bolt - Arrow - . ● Disassembly the front brake disc brake disc - 1 -. ●...
  • Page 94 YD-EM279 Check whether the brake pad interferes with the disc brake pump. Solutions: 1. Replace the sleeve of the front wheel disc brake. 2. If the problem is not resolved, replace the Replace the disc brake assembly. disc brake assembly. 3.

  • Page 95: Disassembly And Installation Rear Brake Disc Disc

    YD-EM279 7.4 Disassembly and installation of rear brake 7.4.1 Service tools Hexagon 6mm ● 7.4.2 Disassembly and installation Disassembly Park the vehicle on a horizontal road surface to ● support the main bracket. Close the key and pull it out. ●...
  • Page 96 YD-EM279 Disassembly the flat fork cover right. ● Disassembly the rear fender. ● Disassembly bolt - arrow - . ● Disassembly the rear brake - 1 -. ● Caution: Release the retention card. Installation Installation is carried out in reverse order of disassembly. PREMIUM E-MOBILITY...

  • Page 97: 备用件清单

    YD-EM279 Spare parts list Name: Under the Name: On the gauge Name: Gauge cover Name: Right bar Name: Center Hood gauge cover cover under the cover Code：C1061047000 Code：C1061048000 Code：C1061049000 Code：C1058597000 Code：C1061051000 Name: Side plate left Name: Side plate right Name: Front fender Name: Inner windshield Name: Inner windshield uplink plate...
  • Page 98 YD-EM279 Name: Seat bucket Name: License plate Name: Saddle Name: Hook Name: Shelf baseplate lamp fixing plate Code：C2019156000 Code：C2019157000 Code：C2019160000 Code：C2019162000 Code：L3560000045 Name: Center cover Name: Front rubber Name: Frame Name: Frame Name: Headlights decorative rubber ring cover decorative rubber left decorative rubber right Code：L9510000867 Code：L9510000875...
  • Page 99 YD-EM279 Name: Rear right foot Name: Front left Name: Front right Name: Backrest Name: Rear license footrest footrest bracket plate bracket Code：L3220000481 Code：L3220000480 Code：L3230000475 Code：L3270000275 Code：L3100000088 Name: Rear Shelf Name: Front Shelf Name: Instrument Name: Rear armrest Name: Motor bracket Code：L3240002403 Code：L3240002402 Code：L3310000055...
  • Page 100 YD-EM279 Electrical schematic PREMIUM E-MOBILITY...

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