How this one is meant to be worked through, in the author's own words:

1. Read the Introduction and Chapters 5 to 8 first, in order - they are the four rules and every later chapter refers back to them. Then read Chapter 7 again, properly, before buying a single tool, because it is the one about your hands, your lungs and your building.
2. Three stop-work items, answered in writing before any customer machine arrives: whether the activity is permitted at your location, what quantity of fuel you may store and where, and whether you are insured for customers' machines in your CARE, CUSTODY AND CONTROL. Chapter 14.10.
3. The third question is separate from public liability and is the one most commonly missed. Liability cover responds to damage you cause to others; it does not generally cover property in your custody - and at the peak you may have a dozen machines belonging to other people in a building containing fuel. Chapter 14.4.
4. Convert the insurance limit into a machine count and treat it as a hard operating limit. It is frequently lower than your floor space allows, and ride-on machines consume it fast. Chapter 12.3.
5. This book contains no specifications. No torque figures, gaps, clearances, ratios, capacities, intervals or speeds. Every one comes from the manufacturer's information for the specific machine in front of you. Chapter 17.9.
6. Never take a specification from an AI system. It will answer confidently and correctly formatted, nothing in the output signals that it is wrong, you cannot detect the error by using it, and in the case of blade fasteners, flywheel nuts and governed speeds the consequence is an injury to a member of the public. Chapter 37.3.
7. Nothing comes apart until there is a written record and an agreed spending limit - not before major work, before the FIRST fastener. Diagnosis here frequently requires disassembly, and disassembly removes the customer's ability to decline. Chapter 5.1.
8. The whole rule reduces to one question asked at intake: 'What's the most you'd want to spend on it before I stop and ring you?' Six seconds, written down in front of them, and it is the most valuable sentence in the trade. Chapter 5.5.

Written to be used rather than skimmed. Every financial figure is left blank on purpose, and anything touching law, tax, insurance or data protection is written as questions for a qualified professional rather than answers.

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