How to read Parts Diagrams

Parts diagrams (also called exploded views or parts breakdowns) show you how a machine is built and which replacement parts it uses. Understanding these diagrams makes it much easier to order the correct part the first time.

Tip: Keep your model number handy. Most diagrams are specific to one model or a small group of models.

1. Find Your Model Page

Start by locating the correct model on Parts-Diagrams.com. You can:

  • Use the search bar and type your full model number.
  • Browse by category (pressure washers, ice machines, outdoor equipment, appliances, etc.).
  • Browse by brand and then select your model from the list.

2. Open the PDF Parts Diagram

On each model page you’ll see a link to the PDF parts diagram or exploded view. Open the file so you can zoom in and move around the page. Most diagrams are split into two main sections:

  • Illustration: A line drawing of the machine with each part labeled by a reference number (1, 2, 3…)
  • Parts list: A chart that matches each reference number to a part number and description.

3. Match the Callout Number to the Parts List

Once you’ve found the area of the machine you’re working on, look for the small numbered callouts pointing at each component.

  1. Note the number next to the part in the illustration (for example, “12”).
  2. Scroll to the parts list and find the row where the Ref or Item column shows the same number.
  3. Read across the row to see the OEM part number and description.

4. Check Quantities and Notes

Many parts are used more than once in a machine. The parts list usually includes a Qty column and sometimes extra notes.

  • Qty: Tells you how many of that part are used in one unit of the machine.
  • Notes / Remarks: May show updated part numbers, optional kits, or model-specific changes.

Example: If the quantity shows “4” for a bolt, you’ll usually need to order four bolts to replace the full set.

5. Use the OEM Part Number to Order

The most important piece of information on the diagram is the OEM part number. On Parts-Diagrams.com, many diagrams include clickable links that take you directly to replacement options.

  • Look for the part number in the chart (for example, 040007500).
  • Use the link on the model page to view available replacements.
  • If you search elsewhere, always search by exact part number for best results.

6. Verify Fit Before You Buy

Before ordering, double-check that the part is listed for your exact model (and, if applicable, voltage or configuration). Some parts look similar but only fit specific versions of a machine.

  • Confirm the model number and any suffixes (A, W, N, etc.).
  • Review any “fits these models” notes on the product page.
  • If a part has been superseded, use the updated number provided.

Frequently Asked Questions

What if my diagram shows an old part number?

Manufacturers often update or “supersede” part numbers. When possible, we note the newest replacement number on the model page or product listing.

Can I use a diagram from a similar model?

Diagrams are model-specific. A close match may help with general layout, but you should always reference the exact model number printed on your equipment for accurate parts.

Do diagrams show every single part?

Most critical components are shown, but some hardware or wiring details may be grouped or simplified. If you don’t see a small item listed, it may only be available as part of a larger assembly.

Ready to Find Your Parts?

Head back to our brand or category pages, choose your model, and open the PDF parts diagram. With a little practice, reading parts diagrams becomes one of the fastest ways to keep your equipment running.