The Sealand VacuFlush toilet system has been popular on boats worldwide for years. Different versions ranging from pedal-flush types to models resembling high-end household toilets are now available. With the various models and versions, though, basic repair and troubleshooting can sometimes be confusing. We always recommend obtaining specific model numbers when troubleshooting any issues with your VacuFlush system (or any system on your boat, for that matter). However, there are universal issues with VacuFlush systems that have basic solutions.

5 Sealand VacuFlush Toilet Part Fixes

Issue #1: Water Does Not Enter the Bowl

This is a fairly common issue that occurs mostly with panel-operated VacuFlush units. The cause of the problem is most likely electrical. The simple solution is that the toilet fuse or circuit breaker may have tripped. Turning off the power to the toilet for 60 seconds and then turning it back on can usually reset the breaker or fuse. In some cases, you may need to replace the fuse or breaker. If that's not the cause, there may be a loose wire connection at the circuit board (check pins 8 & 9), or perhaps the wiring is incorrect. Pin 8 should be the positive and pin 9 should be negative. Finally, the circuit board may be defective and you will need to replace it.

On pedal- or panel-operated toilets, water may not be getting to the bowl due to a clog. You'll want to check the water lines to ensure they are not collapsed or bent. Also, clean the screen of the water inlet valve. (This will be located in different places depending on the model. Check your operator's manual.) It is also possible that the wash holes in the rim of the toilet are plugged; clean them thoroughly. If you cannot unclog them, you may have to replace the bowl.

Issue #2: Water Does Not Shut Off and Toilet Overflows

This very messy problem can occur on pedal-activated toilets when there is not enough clearance between the pedal and the top of the water valve cap. You'll need to adjust the cam strap for maximum clearance (0.6 inches).

This problem can also happen on pedal or panel toilets when there is a failure with the water valve; either debris prevents the valve from closing or the valve has simply failed. It's easy enough to replace, and you can order them from Marine Parts Source right now. If the water valve is not the culprit, then there is likely a circuit board failure; replacing the board is your best option to resolve this.

Issue #3: The Flush Ball Will Not Open or Close Correctly

For panel toilets, the first thing to check when the flush ball isn't operating correctly is the camshaft. It may need adjusting or even replacing. Your operator's manual should include instructions specific to your model for this type of repair. Other toilet parts that might be failing include the cam switch, the spring assembly, or the drive linkage. If the flush ball is just moving slowly, clean it first before you attempt to replace any parts. Make sure to clean under the seal as well, and then lubricate the ball with silicone marine grease.

On pedal toilets, the shaft could simply be broken or misaligned with the spring cartridge. You may be able to put pressure on the shaft from beneath the flush ball so that it engages properly with the spring cartridge (Hint: rotating the flush ball may help to get the shaft to line up properly with the cartridge). If the shaft is broken, replacing it with a new one is a simple repair.

Issue #4: Water Does Not Stay in the Bowl

There are a lot of reasons why water may not be staying in the bowl, but most are related to the flush ball. There could be debris preventing the flush ball from closing properly; a simple cleaning and lubrication with silicone grease should help. It's possible that the flush ball seal is worn or cracked, and, if so, you want to replace it. Similarly, if the flush ball itself has sustained scratches or other damage, you should replace it. (This is easier on pedal toilets than panel toilets. Consult your operator's manual.) Especially on panel toilets, you'll want to check the cam switch and flush ball alignment and adjust if needed.

Issue #5: Water is Leaking!

There are numerous possible sources for water leaks. You'll want to check all your water lines and make sure the connections are tight and secure. The water valve can be a common source of leaks; if you see that the valve is leaking, replace it. (Don't try to repair it.) Check that the toilet bowl seal is in good condition; if not, replace it. The bowl itself may have a crack causing the leak which would necessitate it being replaced. On pedal toilets, the clamp ring for the toilet base may be loose and need to be tightened; for panel toilets, the toilet base bolts may be loose, but be sure not to overtighten them (20-25 in./lbs. is recommended).

Marine Parts Source stocks a variety of VacuFlush repair toilet parts, and our knowledgeable salespeople can assist with troubleshooting. If you have any problems with your VacuFlush systems and need assistance, feel free to give us a call. Visit MarinePartsSource.com today!