ReelUp tracking pixel Read the Privacy Policy
Skip to content
The EOFY Clean Up is here!
Get 5% OFF the Entire Site with code EOFY5 – Valid till 30th June 2026. T&C Apply.
Open to Public & Businesses
Get a FREE Hoodie, Battery or Can Cooler with selected Makita products – Limited time only

Karcher HD 9-23 G EASY 3915PSI Cold Water High Pressure Cleaner

SKU 1.187-906.0
BARCODE 4054278210575
By: Karcher
Original price $5,299.00 - Original price $5,299.00
Original price
$5,299.00
$5,299.00 - $5,299.00
Current price $5,299.00
Availability: This product will be delivered in 3-5 business days
Size: Individual
Colour: Grey

SECURED SSL CHECKOUT GUARANTEED

  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

Delivery Notice:

Please allow 3-5 business days for processing before it's ready for delivery or pickup. All standard delivery options still apply.

Finapps equipment financing

Equipment financing made easy.

Powered by Finapps.

Learn more

Karcher HD 9/23 G EASY! Petrol 3915 PSI – Commercial Pressure Washer

Master the absolute most extreme, remote outdoor cleaning operations with the earth-shattering, grid-independent power of the Karcher HD 9/23 G EASY! Petrol Cold Water Pressure Washer. In the heavy-duty civil construction, mining, and agricultural sectors, attempting to clean caked-on clay, tar, and concrete slurry without access to 3-Phase electrical mains is a severe logistical hurdle. This professional-grade heavy duty pressure washer provides the ultimate, uncompromising mobile solution. Powered by a massive Honda GX 390 petrol engine, it delivers an astronomical 3915 PSI (270 bar) and a high-volume 900 Litres per hour flow rate, providing the sheer, aggressive force required to blast away heavy mud and industrial grease anywhere on the worksite.

Designed for absolute worksite survival and continuous, high-torque commercial deployment, the Karcher HD 9/23 G features a heavy-duty crankshaft pump equipped with ceramic pistons, drastically reducing internal heat and friction to extend the pump's lifespan exponentially under extreme pressure. Mounted on a rugged, tubular steel frame equipped with large pneumatic tires, the massive engine and pump are completely protected from severe physical impacts. Supplied with Karcher's highly innovative EASY!Force trigger gun to completely eliminate operator hand fatigue, these elite commercial cleaning machines provide hire fleets and heavy industrial contractors with an indestructible, highly maneuverable asset for their most brutal outdoor washing challenges.

Who Is The Karcher HD 9/23 G Pressure Washer Ideal For?

The Karcher HD 9/23 G delivers a massive Honda GX 390 engine, a heavy-duty ceramic piston pump, and an extreme 3915 PSI. It is highly recommended for:

  • Civil Construction & Mining Sites: Utilizing a highly robust commercial pressure washer to rapidly blast heavy, hardened mud and concrete slurry off massive earthmoving machinery, excavators, and drilling rigs completely off the grid.
  • Agricultural & Heavy Farm Sectors: Relying on the high-volume 900 L/h water flow and extreme 3915 PSI to quickly wash down massive combine harvesters, livestock sheds, and heavy farm implements, drastically reducing daily maintenance time.
  • Transport & Heavy Logistics: Taking absolute advantage of the petrol-powered mobility to effectively strip heavy road tar, exhaust soot, and grease from large commercial trucking fleets and rail carriages.
  • Equipment Hire Fleets: Deploying premium industrial cleaning tools built on a rugged tubular steel frame, ensuring the unit survives constant transportation and severe daily abuse from diverse, heavy-duty rental customers.

Key Features and Performance Benefits:

  • Massive Honda GX 390 Petrol Engine: Unyielding worksite reliability. The Honda GX 390 is a massive 8.7 kW engine, providing the absolute maximum torque required to maintain 3915 PSI continuously without stalling in the harshest outdoor conditions.
  • Extreme 3915 PSI & 900 L/h Output: The ultimate cleaning advantage. The extreme pressure aggressively cuts through thick grease and tar, while the massive 900 Litres per hour flow rate physically pushes thick mud away rapidly.
  • Heavy-Duty Crankshaft Pump: Built for extreme worksite survival. A commercial crankshaft pump featuring ceramic pistons drastically reduces internal friction and heat, extending the pump's life exponentially compared to standard wobble-plate pumps.
  • Innovative EASY!Force Trigger Gun: The ultimate ergonomic advantage. Traditional guns require constant, heavy squeezing. The EASY!Force gun uses the water's recoil force to keep the trigger depressed, meaning the holding force required by the operator is reduced to zero.
  • Rugged Tubular Steel Frame: Maximizes worksite protection and mobility. The heavy-duty steel trolley acts as a roll cage, protecting the engine from impact. The large pneumatic wheels allow operators to pull the heavy 77kg machine easily over rough terrain.

Technical Specifications & Capabilities:

  • Brand: Karcher
  • Model: HD 9/23 G EASY! (Part No: 1.187-906.0)
  • Product Type: Petrol Cold Water Pressure Washer / Heavy Duty Pressure Washer / Industrial Cleaning Tools
  • Engine: Honda GX 390 (4-Stroke Petrol / 8.7 kW)
  • Pump: Crankshaft Pump (Ceramic pistons)
  • Operating Pressure: 3915 PSI (270 Bar)
  • Water Flow Rate: 400 – 900 L/h
  • Fuel Tank Capacity: 6.1 Litres
  • Weight: 77 kg
  • Frame: Tubular Steel Frame with Pneumatic Wheels

Dispatch: Items marked as “In stock” or “Ready to be shipped” are usually dispatched within 1 business day after payment is received. If an item is not in stock and ordered from our supplier, please allow 3–5 business days for processing before it is ready for delivery or pickup. All standard delivery options still apply.

Shipping: Delivery costs are calculated at checkout based on your location and order size. Bulky items and chemicals may attract additional freight charges and cannot be sent to PO Boxes.

Delivery: Parcels are delivered by road freight. Authority to leave may be used if no one is available to receive the order. For full details, please see our Shipping & Delivery Policy

Business days to delivery

NSW
City 1 Day
VIC
Melbourne 1 Day
Regional 3–4 Days
QUEENSLAND
Brisbane 1–2 Days
Regional 3–4 Days
SOUTH AUSTRALIA
Adelaide 2–3 Days
Regional 4–5 Days
NORTHERN TERRITORY
All Areas 4–6 Days
WESTERN AUSTRALIA
All Areas 4–6 Days
TASMANIA
All Areas 4–6 Days
What is the advantage of a 'Petrol' pressure washer?

A petrol pressure washer provides total grid independence. You do not need a massive 3-Phase electrical outlet. You can load this machine into a ute and clean excavators, fences, and concrete anywhere on a remote worksite or farm.

Is 3915 PSI dangerous?

Yes. 3915 PSI is an extreme, industrial-grade pressure rating. It can effortlessly slice through heavy work boots, strip paint off cars, and gouge soft timber. It MUST be operated by trained professionals wearing adequate protective gear.

Why is the Honda GX 390 engine important?

The Honda 'GX' 390 is an absolute powerhouse. It is a massive 8.7 kW commercial engine. It provides the immense torque required to drive the high-pressure water pump continuously without stalling or overheating.

What is a 'Crankshaft Pump' with Ceramic Pistons?

A crankshaft pump is the absolute gold standard for heavy industry. It is significantly more durable than standard domestic pumps. The pistons are made of Ceramic, which is incredibly hard and highly resistant to friction and heat, extending the pump's life exponentially.

Why is a 900 L/h flow rate important?

Pressure (PSI) cuts the dirt, but Flow (L/h) washes it away. A massive 900 Litres per hour flow rate acts like a heavy flood of water, meaning you can wash thick mud off a tractor significantly faster than a standard domestic machine.

What is the 'EASY!Force' trigger gun?

Standard pressure washer guns require you to constantly squeeze a stiff trigger, which causes severe hand cramps after 10 minutes. The Karcher 'EASY!Force' gun uses the recoil of the water to hold the trigger open for you, reducing the holding force to zero.

Does this machine heat the water?

No. The Karcher HD 9/23 G is strictly a 'Cold Water' pressure washer. If you need to spray hot water or steam to dissolve thick industrial oil, you must purchase a dedicated Diesel-Heated Hot Water pressure washer.

Can I run this machine from a water tank?

Because it requires an enormous 900 Litres per hour, it MUST be connected directly to a high-flow mains water tap. Drawing from a static tank will starve the massive pump of water (cavitation) and destroy it instantly unless a powerful booster pump is used.

Is 77kg heavy to move around?

Yes, 77kg is exceptionally heavy. However, the machine is securely mounted on a rugged tubular steel frame featuring perfectly balanced, large pneumatic tires. This allows a single operator to tilt it back and roll it across rough terrain easily.

Does it have an electric start?

No, this model features a standard 'Recoil' start (pull cord). Because it is equipped with a premium Honda GX engine, it is incredibly easy to pull-start despite its massive size.

How often do I need to change the oil?

You must perform regular maintenance on both the Honda engine AND the internal water pump. Typically, the engine oil and the specialized pump oil should be changed after the first 50 hours of use, and then every 100 hours thereafter.

Do you offer trade pricing for hire companies?

Yes, Freshway Supplies provides highly competitive volume pricing and trade accounts for equipment hire fleets, industrial manufacturing plants, and construction contractors ordering heavy-duty pressure washers. Contact us to establish your account.

Trusted by over 1,000 + Customers

Join thousands who rely on our products and service—real results and proven satisfaction.

RELATED PRODUCTS

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

class=" product-compare-drawer__link button-primary disabled " href="/" data-product-compare-drawer-link data-product-compare-drawer-link-text="Compare" > Compare