March 29, 2025 BY

How to Maintain Your High-Pressure Washer for Maximum Efficiency 

Keeping your high-pressure washer in top condition is essential for long-term performance, safety, and cost savings. Whether you use your pressure washer daily in a commercial setting or occasionally for light-duty cleaning, regular maintenance ensures maximum efficiency and extends the lifespan of your equipment. At Eurojet, we supply high-quality pressure washers and spare parts across Ireland, and we’re here to share our expert tips on keeping your machine running like new. 

Why Pressure Washer Maintenance Matters 

Neglecting basic upkeep can lead to reduced performance, higher fuel or power consumption, and costly breakdowns. A well-maintained washer delivers consistent water pressure, prevents internal damage, and protects your investment.

  1.  Check and Clean the Nozzle Regularly

    A clogged or worn-out nozzle can significantly reduce water pressure and increase strain on the pump. Clean the nozzle with a pin or needle tool after every few uses, and inspect it for wear and tear. 
  1. Inspect Hoses and Connections

    Look for cracks, leaks, or kinks in the high-pressure hose. Damaged hoses can cause pressure loss or pose safety risks. Make sure all fittings are tightly connected to prevent water wastage and pump stress. 
  1. Replace or Clean Filters

    Water inlet filters prevent debris from entering your machine. Dirty filters reduce water flow and damage internal components. Check and clean the filter weekly, especially if working in dusty or muddy environments. 
  1. Change Engine Oil (For Petrol/Diesel Models)

    Change the engine oil after the first 20 hours of use and then every 100 hours (or as recommended by the manufacturer). Use high-quality engine oil suitable for small engines. 
  1. Flush the System After Use

    After each use, run clean water through the machine to flush out detergent and debris. This simple habit prevents clogs and internal corrosion, especially in hot water washers. 
  1. Store Properly in Off-Season

    If you’re not using the washer for an extended period, drain all water, disconnect hoses, and store the unit in a dry, frost-free environment. Add pump saver fluid to prevent seals from drying out. 
  1. Check Pump Oil (For Units With Oil-Lubricated Pumps)

    If your model has a separate pump oil reservoir, check levels regularly and top up or replace as needed. Discoloured oil is a sign it’s time to change it. 
  1. Tighten All Fasteners

    Vibration during use can loosen screws and bolts over time. Inspect and tighten all fasteners monthly to prevent rattling and ensure safety.

Common Pressure Washer Maintenance Mistakes to Avoid 

  • Ignoring the water source quality
  • Using the wrong detergents or chemicals 
  • Running the machine without water 
  • Skipping annual professional servicing 

 Conclusion 

Routine maintenance isn’t just a recommendation — it’s a necessity for high-performance cleaning. By following these tips, your high-pressure washer will stay powerful, reliable, and efficient for years to come. At Eurojet, we offer expert advice, servicing, and a wide selection of spare parts to keep your equipment in peak condition.