How to Start Gas Pressure Washer: A Comprehensive Guide

Gas pressure washers are powerful tools that can make cleaning tasks easier and faster. However, starting them can be a bit tricky, especially if you’re new to using one. In this article, we’ll give you a step-by-step guide on how to start a gas pressure washer.

What You’ll Need

Before starting your gas pressure washer, you’ll need to gather a few things. These include:

  • A gas pressure washer
  • A garden hose
  • A water source
  • Gasoline
  • Oil
  • A funnel
  • Safety glasses

Step-by-Step Guide on How to Start a Gas Pressure Washer

Now that you have everything you need, follow these steps to start your gas pressure washer:

Step 1: Read the Manual

Before anything else, make sure to read the manual that comes with your gas pressure washer. This will give you specific instructions on how to start and operate your machine safely.

Step 2: Prepare the Machine

Make sure your gas pressure washer is on a level surface and that the water source is turned on. Attach the garden hose to the machine and turn on the water. Next, add gasoline and oil to the machine. Refer to the manual for the correct amount of each.

Step 3: Turn On the Fuel Valve

Locate the fuel valve and turn it on. This will allow gasoline to flow into the engine.

Step 4: Engage the Choke

The choke helps to start the engine by reducing the amount of air that enters the carburetor. Engage the choke by moving the lever or knob to the “choke” position.

Step 5: Prime the Engine

Most gas pressure washers have a primer bulb that you need to press several times to prime the engine. This helps to draw gasoline into the carburetor and make starting the engine easier.

Step 6: Pull the Starter Cord

Now it’s time to start the engine. Grab the starter cord and give it a firm, quick pull. If the engine doesn’t start on the first try, wait a few seconds and try again. Don’t pull the cord too hard or too many times, as this can flood the engine.

Step 7: Release the Choke

Once the engine starts, release the choke gradually to let more air into the carburetor. This will help the engine run smoothly.

Step 8: Adjust the Throttle

The throttle controls the speed of the engine. Adjust it to the desired speed for your cleaning task.

Step 9: Start Cleaning

You’re now ready to start cleaning with your gas pressure washer. Point the wand at the surface you want to clean and pull the trigger to start spraying water.

Frequently Asked Questions

How do I know when to add oil to my gas pressure washer?

Refer to the manual for the recommended oil change intervals for your gas pressure washer. Some models may require oil changes every 50 hours of use, while others may need it after every 20 hours of use.

What type of gasoline should I use for my gas pressure washer?

Most gas pressure washers use regular unleaded gasoline with an octane rating of 87 or higher. Check the manual for any specific recommendations.

Why won’t my gas pressure washer start?

There could be several reasons why your gas pressure washer won’t start. Some common causes include a clogged carburetor, a dirty air filter, or a faulty spark plug. Refer to the manual for troubleshooting tips.

Is it safe to use a gas pressure washer?

Yes, it’s safe to use a gas pressure washer as long as you follow the manufacturer’s instructions and wear protective gear, such as safety glasses and gloves. Avoid pointing the wand at people, animals, or delicate surfaces, as the high pressure can cause injury or damage.


Starting a gas pressure washer may seem daunting at first, but with the right tools and knowledge, it’s a straightforward process. Follow the steps outlined in this article and refer to the manual for any specific instructions for your machine. With a little practice, you’ll be able to start your gas pressure washer with ease and tackle any cleaning task that comes your way.

Related VideoHow to Start Gas Pressure Washer: A Comprehensive Guide