What does an alcohol tester measure in small engines?

An alcohol tester is specifically designed to measure the concentration of alcohol within a fuel mixture. In the context of small engines, particularly those that may run on a blend of gasoline and alcohol (such as ethanol), it's important to know the precise alcohol content to ensure optimal performance and compliance with specifications.

Accurate measurement of the amount of alcohol in fuel is crucial because alcohol can affect ignition characteristics, engine performance, and emissions. Too high or too low a concentration can lead to issues such as poor combustion, increased wear, or higher emissions.

Understanding this metric helps mechanics and small engine technicians tune and maintain engines effectively, particularly in applications where different fuel types may be used, maximizing efficiency and reliability. This makes the measurement of alcohol content essential for maintaining the proper operating conditions in small engines.