2. Check the oil filter. Make sure the oil filter is clean and properly installed. If it is clogged, replace the oil filter.
3. Check the oil pump. Make sure the oil pump is working properly. If it is not, replace the oil pump.
4. Check the oil pressure sensor. Make sure the oil pressure sensor is working properly. If it is not, replace the oil pressure sensor.
5. Check the oil passages. Make sure the oil passages are not blocked. If they are, clean the oil passages.
6. Check the engine bearings. Make sure the engine bearings are not worn out. If they are, replace the engine bearings.
If you have tried all of these steps and you still do not have oil pressure, you should take your Honda gx620 to a qualified mechanic.
