Before you start
Gather the appropriate supplies and review the specific equipment manual.
- Freshwater plumbing diagram
- Flashlight
- Dry paper towels
Step-by-step instructions
Observe when it cycles
Note whether the pump runs with no faucet in use and whether the interval has shortened.
Look for obvious leaks
Inspect faucets, shower hoses, filter bowls, tank outlets and accessible joints.
Check the bilge
Water from a leak may appear far from the failed fitting because it follows the boat structure.
Review accumulator settings
If the system has a pressure tank, use its specific manual to understand precharge and operation.
Repair and recheck
Isolate an identified leak and use suitable potable-water parts; arrange service for pump-switch faults.
Safety note
Disable pump power before disassembling any component. Protect against electrical equipment getting wet.
Key takeaway
Repeated no-demand cycling usually indicates escaping pressure, not normal use.
Keep this job on your maintenance schedule
Save the topic as a maintenance task, choose a due date or engine-hour target, and record future service. Free and stored on your device.
Add to my maintenance plannerThis guide is for general education. Follow your equipment manufacturer’s instructions, current navigation guidance and applicable marine safety standards. When uncertain, use a qualified marine professional.