seadoo jetski pwc bilge pump install
How to install a Bilge Pump

The day I nearly sunk my Sea-doo due to the hull getting full of water was the day I decided to do a Bilge Pump Install in my Sea-doo. The local Sea doo dealer wanted a heap of dollars to install a bilge pump so I thought I would install one myself.

Sea-Doo Bilge Pump Install Simple DIY – Rule 500, 750, 1100 GPG

This Jet ski DIY Bilge Pump Install project can be done in a few hours. I chose the rule 500A bilge pump but you can use a higher GPH pump if you feel the need. The following items will be required. 



Rule-mate Automatic Bilge Pump 500 GPH 
Key Benefits & Features:

  • All-in one bilge pump and auto switch. No float this is electronic water sensing 
  • Pump turns on when water rises and shuts off when water is removed
  • Snap-off strainer for easy installation and cleaning
  • 1-1/8 inch discharge outlet
  • 3 year warranty
  • Features a solid state water sensing technology. No moving parts
  • Auto control
  • Manual Control
  • Neutral

Rule-Mate fully automatic submersible bilge pump. Innovative design incorporates the bilge pump and float switch in a single housing.

The float switch is an electronic type so there shouldn’t be any false starts of the pump as the Sea-doo bounces around. It’s a good idea to test run your pump in a bucket of water before installing. There are 3 wires for the switch.

When water enters the hull and is detected by the bilge. It needs to reach a certain height (2-3/4 inches) a sensor turns the pump on. After the water is pumped out another sensor shuts the pump off. So mount this pump in the lowest part of your boat or Jet-Ski.

Rule has been designing and building bilge pumps for over 50-years. These sump pumps are the first choice by boat owners and fishermen all over the world.

Mounting Rule Pump onto Sea-doo

I used 3m dual lock tape on the bottom of the rule pump water inlet filter. This enabled me to stick the pump onto the hull bottom and easily remove if the pump fails or other dual lock tape scotch mechanical work needs to be done.

This tape is absolutely fantastic it’s so strong and really locks the pump down. Just clean the hull with methylated spirits first to get a good bond on the tape. After 2 years the pumps is still stuck on good.

You will need to run your 2 core cable up to the battery and terminate it with your in-line fuse on the active. A 3 amps fuse is fine as the pump only pulls 2 amps. You will need a larger fuse if you use one of the higher GPH pumps like the 750 or 1100 GPH pumps. These will draw closer to 4 amps.

The other option is to run only the active up to the battery and run the neutral or earth from the pump to a screw on the engine for earth. Don’t connect the fuse yet.

Mounting Override Switch Sea-doo

Bilge Pump Install wiringNext is to mount the override switch, I put mine just below the glove box latch. I found this a great spot as it is easy accessible and will hidden at the same time, a small hole will have to be drilled to enable the cable to pass through.

The 3 way auto manual switch is also mounted with dual lock tape, the heavy-duty stuff.

To stop water getting into the switch I have used some Dow Corning® 111 Valve Lubricant and Sealant this stuff is great as it seals against ingress of moisture and doesn’t attach plastic or rubber like some other sealants.

So the rule pump has 3 wires 2 active and 1 neutral. One of the wires is your auto control and the other one is the manual control. Don’t mix them up. Depending on the type of switch you have, usually the active wire will go to the centre switch terminal, and the 2 pump wires will be wired into the other 2 spots on the switch.

Drilling Through Jet ski hull body Fibreglass

This was my last step to make sure that my hose can be connected in the correct position without being kinked.

Bilge Pump Install pwcNext tape the front side and the back side with masking tape, this stops your paint from chipping when drilling through the fibreglass with a hole saw. From memory I used a 20mm hole saw, but just match it to the size of the through hull fitting.

Take your time and drill slow. Once through clean up any sharp edges with some fine sand paper. Put a bit of silicone on the through hull fitting and insert it into the hole. Wind up the nut on the back and attach the hose on the through hull fitting and the Rule pump. Thanks to RobWCanada for showing how its done


Connect the fuse and test run the manual switch, it should start-up. Dont run it for too long as it’s not good for the pump to run dry. Auto will run when the water level rises. WE DON’T WANT THAT EVER…..It means a problem.

Cable tie every cable down so it doesn’t bounce around.

Have fun on the new addition of your Rule 500 Bilge Pump Install. This procedure can be the same for a boat, all you may need is a longer water outlet hose. Now go ahead and do your yearly service on the Sea-Doo

Let me know in the comments bellow how you installed your bilge pump.


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Love the site– lots to see!