Lf481Q3 Engine; If The Engine Fails To Run Or Runs Slowly At Start, Carry Out The Trouble Diagnosis And Removal Asper Table 1-51 - Lifan 620 Maintenance Manual

I. LF481Q3 engine
1. If the engine fails to run or runs slowly at start, carry out the trouble diagnosis and removal as
per Table 1-51.
S/N
Measure the voltage between the two terminals of the
1 battery with a multimeter. Is the voltage about
10-12.5V?
Turn the ignition switch to ON. Measure the voltage
2 between the ignition switch and the terminal of the
battery positive pole. Is the voltage about 10-12.5V?
Turn the ignition switch to START. Measure the
voltage of the terminal of the ignition switch to connect
3
with the positive pole of the start motor with a
multimeter. Is the voltage greater than 8V?
Keep the ignition switch in START. Measure voltage of
4 the terminal of the positive pole of the start motor with
a multimeter. Is the voltage greater than 8V?
Check the start motor for open or short circuit with a
5
multimeter.
6 Check if the engine is locked for lack of lubrication.
In winter, check if the start motor is affected by high
7 resistance as improper engine lubricant and gear box
oil is applied.
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Table 1-51
Operation
67
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Test Results Actions
Yes Next step
No Repair or replace battery
Yes Next step
Repair terminal or replace
No
lead
Yes Next step
Repair or replace ignition
No
switch
Yes Next step
Repair terminal or replace
No
lead
Yes Repair or replace start motor
No Next step
Yes Remove the trouble
No Next step
Yes Replace the oil
No Repair or replace timing belt