Lifan 620. Service manual - part 25

Table 1-78 (Continued) 

S/N Operation  Test 

Results 

Actions 

Yes Next 

step 

5 

Check the spark plug for each cylinder. Check if its 

model and gap can meet with starndards. 

No 

Adjust or replace 

Yes Wash 

relevant 

parts 

6 

7 

8 

9 

10 

11 

Yes Diagnosis 

help 

12 

Connect the electronic injection system adapter. Turn on 

the ignition switch. Check the power supply of the pin 

12#, 13#, 44#, 45#, 63#. Check the grounding of the pin 

3#, 51#, 53#, 61#, 80#. Are they OK? 

No 

Check and repair 

relevant line 

 

101

Section V    Security Items for System Maintenance 

 
1. Security items for the diagnosis and maintenance of the fuel injection electronic control system 
(1) Remove and install requirements for the controller 

 Remove the controller before welding and paint baking;

①

 

 Turn the ignition switch to OFF when remove the controller to avoid damage;

②

 

 When the engine is running or

③

 the electrical system is under operation, do not disconnect with 

the battery; 

 Do not st

④

art the engine with high electricity from charger; 

⑤

①

 

②

①

③

④

 

⑤

⑥

⑧

apply a little lubricant to the O-ring. 
After the system being opened, try not to use compressed air and make the vehicle move. 
 
2. Security measures 
To avoid personal injury and damage the fuel injection and ignition device: 
Do not connect or disconnect the ignition harness if the engine is under operation or at a rotation speed 
for start-up; disconnect the harness connector from the hall sensor (distributor) if the engine is driven by 
the starting motor yet not actually started (like compressed pressure check, etc). 
 

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Chapter II    Chassis System 

 

Section I    Suspension and Axle 

 

I. Overview   

1. Front axle and front suspension, Fig. 2-1.   
 

8. Cotter pin                                          9. Hexagon flange slotted nut (100 N·m) 

10. Left front lower arm assembly                       11. Sub-frame rubber plug 

12. Sub-frame assembly                                                              13. Hexagon bolt with flat washer (210 N·m) 

14. Hexagon flange nut (75 N·m)                        15. Front stabilizer rod rubber mount 

16. Front stabilizer rod hoop                                                        17. Hexagon bolt with taper washer (23 N·m) 

18. Front stabilizer rod assembly                        19. Hexagon flange nut 

20. Right front lower arm assembly                      21. Right front shock damper assembly 

22. Hexagon flange nut (75 N·m) 

 

103

 Thus 

please do not adjust the inclination and caster angle of the kingpin. 
(5) The non-payload is lighter, which helps to decrease the impact load on the suspension and 
improve the driving smoothness of the vehicle.   
(6) The left and right wheels are independently hinged, which assists the wheels to contact the 

104