Haiouus 2 Kit Lawn Mower Deck Wash Kit, for Riding Lawn Mower Cleaning Attachment Kit, Compatible with Cub Cadet, MTD, Troy-Bilt, Craftsman Lawn Mower Tractor, Deck Wash Adapter Accessories

Why I added a wash port to my mower deck

After a few seasons of cutting damp spring growth, I finally got tired of crawling under my rider with a putty knife. Packed grass shortens belt life, throws the deck out of balance, and makes the mower smell like a compost bin. I installed the Haiouus deck wash kit on my stamped-steel deck to make rinsing a habitual, two-minute routine instead of a messy chore. It isn’t magic, but it has cut my scraper time down to almost nothing and made end-of-mow cleanup something I actually do every time.

Build and what you get

The kit is straightforward: a steel nozzle that passes through the deck, a stainless diffuser plate that sits underneath, a large nut to clamp the assembly, and a handful of quick-connect hose fittings and adapters. The nozzle feels solid and threads cleanly; the stainless diffuser doesn’t flex and resists rust. The included quick connects are lightweight and functional out of the box, though I eventually swapped my hose-side coupler to a brass unit for long-term durability.

The design is simple and, in my experience, more reliable than under-deck spinner heads that clog or jam. Water enters from the top, hits the diffuser under the deck, and fans outward to scour the shell. It’s not a pressure-washer replacement, but with the blades engaged, the airflow helps move water and clippings everywhere it needs to go.

Installation: basic, but measure twice

My deck didn’t have a wash port, so I drilled one. The steps that worked well for me:

• Pick the spot: I chose a flat section as far from the discharge chute as practical. This helps water reach the side where buildup is usually worst.
• Verify clearance: With the spark plug disconnected and the deck blocked safely, I rotated the blades to confirm where they pass. I aimed for at least 1 inch of clearance between the diffuser and the nearest blade path.
• Drill the hole: A step bit makes this easy and doesn’t grab. I opened the hole to a snug fit for the nozzle—11/16 inch was right for my hardware. Your deck thickness and paint may require a slight wiggle or one more step on the bit. Deburr the edges and touch up with paint to prevent rust.
• Mount the assembly: The nozzle drops in from the top, the stainless diffuser and nut go underneath. The nut is large; a 15/16-inch deep socket or a box wrench works. I snugged it firmly, then rechecked blade clearance. The nozzle protrudes roughly 3/4 inch below the deck on mine—well above ground level, but worth noting if you mow over roots or stumps.
• Fit the hose end: The kit’s quick connect snaps on and off easily. I added a thin bead of plumber’s grease to the O-ring and kept a spare gasket in the toolbox.

Total install time was under 20 minutes with the deck on the mower, though removing the deck would make the underside work more comfortable.

Safety notes: disconnect the spark plug before rotating blades by hand; wear gloves; and if you’re not comfortable drilling the deck, ask a shop to do the install—there’s no shame in a clean hole lined up where it should be.

Using the wash port effectively

The key is timing. Rinse while the clippings are still fresh and soft.

• Park on a patch you don’t mind getting messy.
• Connect the hose and turn on full city pressure.
• Start the mower and engage the blades at mid-throttle for 1–2 minutes. The spinning blades create airflow that carries water and clippings out of the chute and gaps. You’ll see a slurry pour out—exactly what you want.
• Disengage the blades, shut off water, and briefly re-engage blades for 10–15 seconds to sling off residual water. This reduces rust risk.
• If you’re running a very large deck, move slowly forward and back while rinsing to help water circulate.

On a 54-inch deck, a single port placed away from the chute has been enough for me. If you run a 60–72-inch deck and cut heavy, you may consider adding a second port later, but I’d start with one and evaluate.

Cleaning performance

On a normal mow (dry or slightly damp grass), the wash port removes the vast majority of buildup—call it 85–90% in my experience. The areas around the spindle towers and near the discharge still collect a thin film after several cuts, but it never bakes into a concrete-like layer anymore. Once every few weeks, I’ll tip the deck up and do a quick touch-up scrape that takes minutes instead of an hour.

Where it struggles is the same place all wash ports struggle: cutting soaked, tall grass or weeds that rope around spindles. In those conditions, I’ll rinse immediately after mowing, let it drip for a minute, and then rinse a second time with the blades engaged. That second rinse clears what the first didn’t.

A few practical tips:

• Don’t overdo it. A two-minute wash is plenty. Prolonged soaking can push water into spindle seals or belt paths.
• Keep the chute open during rinsing. Clippings need an exit.
• If your water pressure is low, a short pre-spray with the hose nozzle into the chute before engaging the deck helps prime the wash.

Fit, compatibility, and deck considerations

I installed mine on a stamped MTD-made deck without drama. The kit is generic by design and has enough thread length to accommodate common deck thicknesses. The flat mounting area is the biggest requirement—avoid ridges and double-layered sections. If your deck already has a knockout labeled for a wash port, this nozzle drops into that location as well.

Check for:

• Blade path: at least 1 inch clearance to the diffuser plate.
• Belt, pulley, and linkages: make sure the under-deck nut won’t foul moving parts.
• Ground clearance: the 3/4-inch protrusion is tucked well inside the deck’s perimeter on mine, but be mindful if you frequently scalp or mow over very uneven ground.

Durability and maintenance

The steel nozzle and stainless diffuser have held up well, with no corrosion beyond normal surface staining after a season. I like that the parts are metal—plastic wash ports I’ve used in the past tend to deform if you bump them. The included quick connects are serviceable, but they’re light-duty. If you connect and disconnect frequently, upgrade to brass couplers; they seal better and survive UV and drops.

After each rinse, I pop off the quick connect and snap on a dust cap to keep dirt out of the port. The kit doesn’t include a cap, but a standard garden-hose quick-connect dust cover works. If you mow in sandy soil, that little step prevents grit from getting into the coupler and O-rings.

Downsides and trade-offs

• You have to drill the deck. That’s not hard, but it’s irreversible and could affect warranty coverage on a brand-new machine.
• Wash ports don’t replace occasional scraping. They dramatically reduce it, but they won’t eliminate it if you frequently cut wet, heavy grass.
• The included hose fittings are the weak link. They work, but they’re not premium.
• Water can go places you’d rather keep dry if you run the rinse for too long. Keep the cycle short and spin-dry afterward.

None of these are deal-breakers; they’re the realities of any deck-wash setup.

Value and who it’s for

If you maintain a riding mower or lawn tractor and want to extend belt and spindle life while spending less time on your back with a scraper, this kit earns its keep quickly. It’s especially useful if:

• You mow frequently and can rinse right after cutting.
• Your deck lacks an OEM wash port.
• You prefer a simple, metal, fixed-nozzle design over moving sprayers.

If you already have a factory port that’s damaged or missing hardware, this is a solid replacement as well.

Final thoughts and recommendation

The Haiouus deck wash kit did exactly what I wanted: it turned deck cleaning from an avoided chore into a quick habit. Installation was easy with basic tools (a step bit and a 15/16-inch socket were the heroes), the metal parts feel robust, and the performance is good enough that I rarely scrape anymore. It won’t cure the consequences of mowing in soup, and I’d budget for a better hose coupler if you use it often. But as an inexpensive, durable upgrade that genuinely reduces maintenance time and helps your mower run cleaner and smoother, it’s hard to argue with.

I recommend this kit. It’s a simple, effective way to keep a deck clear of clippings, and the metal construction inspires confidence. If you’re comfortable drilling a hole and want a dependable wash port without paying OEM prices, this one delivers.