Reliability: It is very important that you do not ride your PWC unless you know it is 100% reliable and will remain reliable while you are out on the water. A failure while you are riding can leave you stranded and you cannot simply get off and walk home from the middle of the lake.
It is important that the electrical system be maintained in good condition. Make sure wires are not frayed, loose or flopping around in the hull where they could get damaged. Clean, repair or replace damaged or corroded connections. Always secure the battery and electrical box.