What are the reasons why a scooter cannot start?

[VonMaya]

The reasons why a scooter cannot start include: Incorrect ignition method: Without twisting the throttle, press the ignition switch. If it fails to start, try twisting the throttle appropriately to check if the ignition method is correct. Some owners may prefer twisting the throttle excessively when starting, which may make it difficult to start the engine and could lead to spark plug failure. Improper maintenance: Check in sequence whether the fuel level is sufficient, whether the spark plug electrodes are normal, whether the engine oil level is appropriate, whether the calibrated operating temperature of the engine oil is higher than the actual temperature, and whether the air filter is clogged. Different grades of engine oil are suitable for different temperature environments. Using high-viscosity engine oil in low-temperature conditions may make it difficult for the engine to function properly, resulting in failure to start normally.