niu Kick Scooter KQi3, Service Manual

Page 1: ...V1 0 0 1 Kick Scooter KQi3 Service Manual Jiangsu Niu Electric Technology Co Ltd...

Page 2: ...Parts Removal and Installation Procedure 11 Preparation 11 forehead body 12 dashboard and dashboard cover 14 headlamp 18 handlebar 21 pedal 28 controller and battery pack 32 rear wheel and rear wheel...

Page 3: ...ment 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 mainte...

Page 4: ...olts or nuts should be tightened by beginning with large diameter bolts or inward bolts and then gradually tightening to specified torques diagonally unless otherwise indicated 5 Clean components that...

Page 5: ...rilling polishing or prying or working around high pressure air or fluid tanks springs or other energy storage components Eye protection devices should be worn as long as there are suspicious conditio...

Page 6: ...amp Front reflector Right disc brake lever Right handlebar grip Folding latch Front fork protection cover Tyre Disc brake plate Front wheel Front brake line Lock components Foot pad pedal trim Bottom...

Page 7: ...0 0 7 Scooter Identification Vehicle serial number SN is in the user manual The scooter frame identification code VIN is made inside the frame The motor code is made at left side of the wheel hub mot...

Page 8: ...ge Not less than 50KM Not less than 40KM 25 without wind 75kg body weight flat asphalt road measured at a constant speed of 15km h Turning radius Minimum turning radius 1 3m when walking your scooter...

Page 9: ...delivered 50 electric quantity up to 180 days Battery exhausted state 60 days Brake method Front and rear wheel dual mechanical disc brakes rear wheel electronic brake Front wheel mechanical disc brak...

Page 10: ...be while warning tone comes from the buzzer Error symbols display on the digital tube while warning tone comes from the buzzer Unit display Digital display on LED digital tube mph and km h are switcha...

Page 11: ...ustable torque setting 0 50 N m Ratchet wrench 15 18 mm Valve core remover Standard Air compressor 150 PSI Section 1 Storage Please park your vehicle in a garage or in an open space If your vehicle is...

Page 12: ...ew four Hexagon socket screws Related Screws M5 14 H2001013 Mount Follow as the reverse order 2 2remove the controller harness line and the dashboard line Mount Follow as the reverse order Insert as p...

Page 13: ...V1 0 0 13 forehead body 2 3 remover the front brake line and rear brake line Mount Follow as the reverse order 2 4 remove the forehead body Mount Follow as the reverse order Section 2...

Page 14: ...t screws Related Screws M5 12 H2001009 Mount Follow as the reverse order There shall be no shaking clearance while shaking the front windshield with one hand Section 3 3 2 remove four silicone plugs u...

Page 15: ...hboard cover Section 3 3 4 remove the dashboard cover tear off the dashboard cover Mount Follow as the reverse order 3 3 remove the forehead locking cover Mount Follow as the reverse order Install upw...

Page 16: ...er Section 3 3 5 unscrew three cross screws remove the dashboard from the forehead body Related Screws M2 8 H2001008 Mount Follow as the reverse order 3 6 cut the fastening tie remove the harness slee...

Page 17: ...on 3 3 7 remove the dashboard remove four connectors Mount Follow as the reverse order Press the switch button to power on and check whether the startup is normal 3 8 separate the forehead body and th...

Page 18: ...ehead midhole plug Notice that the side close to the handlebar shall be with radian and the rear shall be flat Mount Follow as the reverse order 4 2 unscrew two Hexagon socket screws Related Screws M5...

Page 19: ...V1 0 0 19 headlamp Section 4 4 3 remove the headlamp wire plug remove the headlamp Mount Follow as the reverse order...

Page 20: ...V1 0 0 20 headlamp Section 4...

Page 21: ...eft and right handlebar grips with force away from the handlebar Mount Follow as the reverse order There shall be no cavity left at the end of the handlebar grips and the handlebar grips shall be not...

Page 22: ...5 5 2 unscrew the screw remove the bell Mount Follow as the reverse order There shall be no shaking clearance while shaking the bell with one hand Grip it naturally with one hand and the bell can be...

Page 23: ...V1 0 0 23 handlebar Section 5 5 3 remove the Left disc brake lever unscrew the screw remove the handlebar threading plug Mount Follow as the reverse order Preload the disc brake...

Page 24: ...V1 0 0 24 handlebar Section 5 5 4 remove the finger control throttle bar unscrew the screw remove thehandlebar threading plug Mount Follow as the reverse order...

Page 25: ...V1 0 0 25 handlebar Section 5...

Page 26: ...V1 0 0 26 handlebar Section 5 5 5 remove the Left disc brake lever unscrew the screw Mount Follow as the reverse order Preload the disc brake...

Page 27: ...V1 0 0 27 handlebar Section 5...

Page 28: ...left on the scooter body Mount Follow as the reverse order 1 Wipe the scooter body clean and there shall be no adhesive residue water and oil stain and other fouling 2 Tear off the bottom surface of t...

Page 29: ...V1 0 0 29 pedal Section 6 6 2 remove the pedal trim unscrew eighteen cross screws Related Screws ST3 5 9 5 H2002005 Mount Follow as the reverse order...

Page 30: ...e the pedal trim unscrew twenty Hexagon socket screws and eight cross screws Related Screws M4 8 H2001001 ST4 2 16 H2002004 Mount Follow as the reverse order K3 pedal long foam K3 pedal long foam K3 p...

Page 31: ...V1 0 0 31 pedal Section 6 6 4 remove the lock components unscrew four cross screws Related Screws ST4 2 16 H2002004 Mount Follow as the reverse order...

Page 32: ...V1 0 0 32 controller and battery pack Section 7 7 1 remove the battery pack unscrew four Hexagon socket screws Related Screws M5 18 H2001016 Mount Follow as the reverse order...

Page 33: ...w 20 of the electricity is strictly prohibited The battery should be fully charged for use after long term storage The original battery for this model must be charged with the original charger that ac...

Page 34: ...V1 0 0 34 controller and battery pack Section 7 controller...

Page 35: ...V1 0 0 35 Lithium battery pro version sport version...

Page 36: ...oller and battery pack Section 7 7 2 remove the controller unscrew two Hexagon socket screws Related Screws M5 8 H2001012 Mount Follow as the reverse order Apply heat conductive silicone grease on the...

Page 37: ...y 3 Under voltage over voltage protection The controller stops automatically the motor rotation when the input voltage to motor is lower or higher than the set value in order to protect safety of the...

Page 38: ...3 remove the charging assembly unscrew two Hexagon socket screws Related Screws M4 8 H2001001 Mount Follow as the reverse order 7 4 remove the charging port unscrew two cross screws Related Screws ST...

Page 39: ...V1 0 0 39 controller and battery pack Section 7 7 5 remove the Side Stand unscrew two cross screws Related Screws M6 12 H2002001 Mount Follow as the reverse order...

Page 40: ...ers unscrew two Hexagon socket screws Related Screws M5 16 H2001004 Mount Follow as the reverse order 8 2 remove the motor unscrew two Hexagon Nuts Mount Follow as the reverse order The motor line sha...

Page 41: ...nti rotation gasket supplied and lock nut supplied The right side flat pad supplied anti rotation gasket supplied lock nut supplied The outlet direction of the motor line shall be straight ahead and t...

Page 42: ...V1 0 0 42 rear wheel and rear wheel fender Section 8 controller...

Page 43: ...it charged fully before maintenance of the motor system Check the Hall cable sensor connector Hall motor connector and controller connector for shorting due to moisture looseness or bad contact before...

Page 44: ...8 3 remover the Disc brake caliper unscrew two Hexagon socket screws Related Screws M5 16 H2001004 Mount Follow as the reverse order 8 4 Loosen the lock nut of the brake line and pull the brake line...

Page 45: ...brake pad and brake disc are worn The brake pad and brake disc are contaminated The brake pad is worn The brake caliper is dirty The brake caliper does not slide smoothly The brake pad is bent and def...

Page 46: ...V1 0 0 46 rear wheel and rear wheel fender Section 8 8 5 remover the rear wheel fender unscrew one Hexagon socket screw Related Screws M4 8 H2001001 Mount Follow as the reverse order...

Page 47: ...remover the tail lamp line guard unscrew two cross screws Related Screws ST4 2 13 H2001015 Mount Follow as the reverse order 8 7 remover the tail light adapter plate unscrew two cross screws Related S...

Page 48: ...fender Section 8 8 8 remover the rear tail lamp unscrew one cross screw Related Screws ST4 2 13 H2001015 Mount Follow as the reverse order 8 9 separate the rear tail lamp and the tail lamp adapter lin...

Page 49: ...V1 0 0 49 rear wheel and rear wheel fender Section 8 controller...

Page 50: ...V1 0 0 50 folding parts Section 9 9 1 remove the brake line upper plug and the brake line lower plug remove the Front brake line put down the folding parts assembly Mount Follow as the reverse order...

Page 51: ...Section 9 9 2 unscrew the Folding parts fixed screw Related Screws M35 1 5 H2001010 Mount Follow as the reverse order The Folding parts fixed screw shall be parallel to the red line otherwise it may n...

Page 52: ...Section 9 9 3 remover the folding parts assembly unscrew two screws Mount Follow as the reverse order 9 4 unscrew one Hexagon socket screw remove the front fork Related Screws M4 10 H2001014 Mount Fol...

Page 53: ...lding parts Section 9 9 5 remove the waterproof foam from the frame remove the controller harness rear brake line and the wire guard spring separate the frame and the front fork Mount Follow as the re...

Page 54: ...10 10 1 From the bottom to the top successively they are the direction bearing bead assembly the dust ring lower head upper plug and the opening holding ring the spherical surface shall face downward...

Page 55: ...tom to the top successively they are lower head bowl plug the dust ring the direction bearing bead assembly the spherical surface shall be kept facing upwards and the lower head bowl plug needs to be...

Page 56: ...stickers unscrew two Hexagon socket screws remove front axle trim covers Related Screws M4 10 H2001014 Mount Follow as the reverse order 10 4 remover the front fork protection cover unscrew two Hexago...

Page 57: ...ver unscrew four Hexagon socket screws Break off 5 pairs of buckles Related Screws M4 8 H2001001 Mount Follow as the reverse order 10 6 remover the self tapping screw plate Straight upwards to remove...

Page 58: ...prohibited from being opened in order to prevent electric shock The charging should be made indoor and should not be made at an open site in order to prevent the electric shorting or firing due to ra...

Page 59: ...V1 0 0 59 Wiring Diagram...

Page 60: ...V1 0 0 60 Fault Codes Dashboard Display and Screen Display in the Event of a Vehicle Fault...

Page 61: ...act after sales service 13 Motor overheat Let the vehicle stand and use only after internal temperature returns to normal 31 Battery MOS damaged Please contact after sales service 32 Battery exposed t...

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