Small Engine Repair and Diagnostics

An engine that won't start shouldn't leave you guessing.

A mower loses power. A generator runs but produces no electricity. Your equipment worked last season-and now it refuses to start. Understanding what to check next can make the difference between a useful repair and another unnecessary replacement part.

Small Engine Repair and Diagnostics helps DIY equipment owners move from symptoms to a practical diagnostic plan. With clear explanations and technical illustrations, this manual introduces the systems behind common two-stroke and four-stroke gasoline engines and explains how to investigate their faults.

Inside, you'll learn how to:

• Identify fuel-delivery problems and clean, rebuild, and adjust carburetors.

• Investigate no-spark faults, test ignition components, and use a multimeter.

• Check compression, understand leak-down testing, and assess valve clearance.

• Troubleshoot recoil starters, electric starters, and engine governors.

• Approach common generator, lawn mower, and pressure washer problems.

• Maintain equipment, prepare it for storage, and record your work using printable workshop forms.

From basic engine operation to more involved mechanical checks, this book connects what you observe with what you should investigate next.

Whether you're maintaining your own equipment or building your workshop skills, you'll gain a clearer understanding of the machine-and a more organized approach to its repair. Use it alongside the manufacturer's service information for your exact model.

Understand the symptoms. Check the cause. Plan the repair.