What should be noted when using a starter motor?

[DelReese]

Precautions for using a starter motor are: 1. The duration of engaging the starter motor should not exceed 5 seconds: Each engagement should last no more than 5 seconds, with intervals of at least 15 seconds between attempts; 2. Release the ignition switch immediately after the engine starts: Once the engine starts, promptly release the ignition switch to cut off the starter mode and stop the starter motor; 3. Reduce wear: After the engine starts, immediately turn back the key to allow the starter's drive pinion to retract in time, minimizing unnecessary wear; 4. Stop immediately if grinding noise occurs: If a grinding noise is heard during startup, stop immediately and wait for the starter to come to a complete stop before trying again; 5. Check if the engine fails to start consecutively: If the engine fails to start after 3 consecutive attempts, check whether the engine has a fault.