Thetford Toilet Cassette Maintenance

Thetford Toilet Cassette Top Tip

Before we start discussing maintenance of the Thetford toilet cassette, did you know you can buy a freshen up kit which comprises of a new toilet seat and a new cassette. So, if you’ve just bought a second hand caravan and don’t want the hassle of using something someone has been happily sitting on and depositing into for years, you can get lovely clean new stuff. So, no need to read the rest of this article, just buy one of these… ( Make sure you buy the correct one )

Thetford 9338262
104 Reviews
Thetford 9338262*
  • With adapter c250 c260
  • Style: Vehicle specific
  • Country of origin is Spain
  • The package dimensin of the product is: 11.4lbs
Thetford 2334062 Caravan Motorhome Cassette Fresh Up Kit C200*
  • Holding tank for Thetford C200 series ( capacity 17 liters )
  • The Toilet fresh-up Set is an easy and economic way to make a used Cassette Toilet as good as new
  • The set includes: Seat & Cover and Waste-holding tank with wheels!
Thetford 5164262 Camping Toilet Fresh-Up Sets for C-400
49 Reviews
Thetford 5164262 Camping Toilet Fresh-Up Sets for C-400*
  • International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.
Thetford Fresh Up C 2,3,4 | Right or Left | Toilet Seat | Tank with Wheels
34 Reviews
Thetford Fresh Up C 2,3,4 | Right or Left | Toilet Seat | Tank with Wheels*
  • Suitable for all C 2 - 3 - 4 toilets.
  • Hygiene for your toilet.
  • Contents of delivery: 1 x tank with wheels, 1 x toilet lid.

You didn’t buy one? Read on my friends…..

Unlike the toilet at home, it’s not a flush and forget affair. Things need doing and doings need getting rid of. It’s not just some magic hole where everything just disappears into never to be seen again. Unless of course you work at a sewage farm, where you’d see it again everyday. Toilets are a serious matter and they are not to be sniffed it, so let’s take a look at one.

The toilet cassette is this thing right here:

Thetford Toilet Cassette

Thetford Toilet Cassette Parts

Looking at the Thetford toilet cassette there’s a number of parts. No need to memorise them all, unless you’d like to…(Your specific toilet may differ to the one shown below)


Firstly, the pour out spout (29) where you empty the loo from. Remove the cap (28) and poor out the contents. The cap is also a measure.
Just below the spout is the handle, where you can hold the cassette.
Below that is a large circle (4 waste holding tank plate) with an orange knob (1 blade opener), this operates the flap, which you open to flush water through to give it a good clean after emptying. Before doing that though you need to remove the flap by sliding it towards the handle. This whole piece can also twist out for even easier cleaning, probably at the end of the season.

There are obviously two wheels (32) and at the top is a pull out handle, which makes it easier to get the the disposal point. Lastly, is the little orange button at the bottom. When emptying you can press this and it lets air in to help move the contains quickly through the pipe

Pink, Blue or Green Fluid?

You may have seen toilet fluid, it comes in different colours, but which colours are used where?

Pink is to be added to the water that flushes to toilet

Green and Blue do the same thing. It’s added to the toilet cassette and breaks down all the nasty stuff in there. Green, as you can probably guess is more environmentally friendly. Blue contains all sorts of chemicals. Where you need to be careful is when a site uses something like a septic tank which breaks down toilet stuff naturally. Don’t use blue in this case, only green. If in doubt either use green or ask.

Thetford Aqua Kem Green Toilet Fluid, Green, 1.5 Litre
212 Reviews
Thetford Aqua Kem Green Toilet Fluid, Green, 1.5 Litre*
  • Environmentally conscious green fluid for the waste-holding tank
  • Strong formula that breaks down waste and toilet paper and keeps the waste holding tank fresh-smelling
  • Earth-friendly biological properties. Ideal for a mobile holiday in nature.
  • 1 dose lasts up to 4 days. Reduces gas build up
  • Septic tank safe (Test ISO 11734)

Thetford Toilet Cassette – Cleaning

Water can be used to flush clean the thetford toilet cassette through and it’s probably advisable to wear some kind of rubber gloves, better safe than sorry. There are various toilet cleaners you can use, but we mainly flush with water thoroughly

Bestseller No. 2
Thetford Fresh Up Set C-2/3/4 Left with Wheels and Handle, Includes Glasses/Tank Cleaner 1L For Faeces Tank + Bathroom Cleaner (500ml) Caravan Camping Mobile Outdoor Toilet*
  • 1 x Thetford faeces Tank for C2/C3/C4 with wheels and handle – Left.
  • 1 x Toilet Seat With Lid For C2, C3 and C4.
  • 1 x Thetford Bathroom Cleaner (500 ml).
  • 1 x Thetford Cassette Tank Cleaner (#1 litres).
  • The set can be used for the left design of the toilet.
SaleBestseller No. 4
Thetford Aqua KEM Chemical Toilet Cleaning Set Green Concentrated + Aqua Rinse Concentrated + Paper Aqua Soft
30 Reviews
Thetford Aqua KEM Chemical Toilet Cleaning Set Green Concentrated + Aqua Rinse Concentrated + Paper Aqua Soft*
  • In the set you will receive a bottle of Aqua Kem Green Concentrated 750 ml (plumbing liquid for the waste water tank), a bottle of Aqua Rinse Concentrated 750 ml (sanitary liquid for the fresh water tank) and a package of Aqua Soft (camping toilet paper)
SaleBestseller No. 5
Thetford Toilet Bowl Cleaner - 750ml
422 Reviews
Thetford Toilet Bowl Cleaner - 750ml*
  • cleaner
  • stain remover
  • maintenance

Thetford Toilet Cassette – Maintenance

As this is the title of the article, we’d better get around to some maintenance. Other than keeping it clean there’s not a great deal to do. You need to lubricate the seal on the part that opens underneath the toilet bowl. You can use olive oil, just open the door by twisting the knob beside the hole and use olive oil to lubricate the seal. You can also use Thetford Seal Lubricant

Thetford 30003ED Seal Lubricant Aerosol - 200ml*
  • Protects toilet seals from drying out and helps toilet run smoother, longer
  • Spray on just about anything to prevent squeaking, creaking or leaking
  • Safe to use on plastics and rubber
  • Covers in one, light coat
  • Supplied in a 200ml aerosol can
Thetford Siliconenspray*
  • Regular application on the valve seal ensures its flexibility and durability
  • Thetford Lubricant Spray
  • Brand: Thetford.

There is a possibility that the float may get stuck, toilet paper can get stuck around it and make it stick in the “full” position. To clear this open the sliding cover that covers the hole half way and push in an anti clockwise motion to remove the plastic casing that holds the seal. (See our video below) This way you can get access to the float which is in one of the corners, just have a feel around (with gloves on) and see if you can free the float. Don’t force it. It in doubt just fill it with water and give it a little shake to dislodge any loo roll.

The handle can come loose. Simply pop the top of the handle off, but getting a blunt knife in the gap, just below the word “Thetford” and it will expose screws. You can re tighten these and pop the piect you just popped off back in place.

Thetford Toilet Cassette Spares

Bestseller No. 1
Thetford Fresh Up Set for Cassette Toilet C400*
  • Model Number: C400
  • Package Dimensions : 67.0L x 38.0W x 40.0H (centimeters)
  • Package Weight: 6600 grams
  • Item Package Quantity: 1
Bestseller No. 2
Thetford C250 Toilet Fresh-up-Set
209 Reviews
Thetford C250 Toilet Fresh-up-Set*
  • White River Outdoor have a lifetime of experience and enthusiasm for all things outdoor
  • Item Package Length: 29.0 cm
  • Item Package Width: 38.0 cm
  • Item Package Height: 49.0 cm
Bestseller No. 3
Thetford Sliding Cover for Cassette C250 and C260
39 Reviews
Thetford Sliding Cover for Cassette C250 and C260*
  • Manufacturer number: 50718-06
  • Dimensions: 1 x 15 x 10 cm
  • Packaging dimensions: 2 x 22.5 x 12 cm.
  • Weight: 35g
  • Gross weight: 55g
Bestseller No. 4
Thetford C400 Cassette Waste Tank Right Hand Spare Replacement Caravan Motorhome Toilet*
  • Model Number: 26634
  • Item Package Quantity: 1
  • Package Weight: 2879.97 grams
  • Package Dimensions (L x B x H) in cm: 72.8 x 27.8 x 24.6
Bestseller No. 5
Thetford Cassette Toilet- SC250 / 260 Blade Opener - Orange - 2374392
10 Reviews
Bestseller No. 6
Thetford SC250CS Cassette Toilet Wire Harness - 50762*
  • Complete wiring harness for the C250CS Thetford toilet.
SaleBestseller No. 8
  • The sliding cover will fit C2, C3 and C4 models
  • Item Package Length: 23.8 cm
  • Item Package Width: 13.0 cm
  • Item Package Height: 8.2 cm
SaleBestseller No. 9
Thetford 50727-06 Plastic Fecal Tank, Grey*
  • Colour: grey
  • Highly Efficient
  • Easy to Use
SaleBestseller No. 10
Thetford 2581078 Cassette Measuring Cap*
  • Measurements in ML or OZ
  • Part number: 2581078
  • Color: YELLOW / GREY.
  • Package Dimensions: 21.4 L x 7.2 H x 10.8 W (centimeters)

Thetford Cassette Toilets – Full Range

Thetford Toilet Cassette Maintenance Our Video

I make a fool of myself with rubber gloves, showing you the cassette

For a practical video on replacing your Thetford toilet cassette seal, see the below

Replacing Thetford cassette toilet seal

*Last update on 2022-08-08 / Affiliate links / Images from Amazon Product Advertising API

Leave a Comment

Help The Website

If you like our stuff...

Amazon Affilliates

Should you purchase from our linked items, you will be directed to Amazon. We will get a small commission, no extra charge to you. It helps fund the website.

Recent Posts

Follow Us

Caravan Security

*Last update on 2022-08-08 / Affiliate links / Images from Amazon Product Advertising API

error: Alert: Content is protected !!