TEST MODE — checkout is simulated
Heavy Duty Manual

Fault codes · Test procedures · Diagnostics — PDF, no shipping, no waiting

Your machine.
Its diagnosis.
Right now.

  • 46guides in the catalogue
  • 46ready right now
  • 72hlink · 5 downloads
  • PDFprintable · no DRM

Browse by brand

Featured guides

The deepest sets we publish — every documented fault for one machine family, each with the test that confirms it and the reading to expect.

Written to be worked from,
not read about.

  • 46guides in the catalogue
  • 46on the shelf, download now
  • SHA-256checksum on every file we hold
  • $0shipping, forever

How it works

  1. Find your machine. Search the exact model number, or open the brand page and pick the guide you need.
  2. Pay by card. Checkout is handled on a secure hosted page. We never see your card details.
  3. Download the PDF. Most manuals download instantly. Some are prepared to order and take from a few minutes up to 1 business day — each manual shows its delivery time before you buy. Your link then stays valid for 72 hours, for up to 5 downloads. Save the file — it's yours to keep.