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Running Engines at Full Throttle is Good For Them

Did you Know that Running your lawn equipment at full throttle results in better fuel economy?

Most modern engines are designed with two specific power ranges in mind - Idle, and Full Throttle.

When you operate your engine outside of the engineered top RPM power range, several things happen:

  • First off, your engine has to work harder to do the same work, decreasing fuel economy and performance.
  • Secondly, whatever the engine is powering was engineered at the factory to run at full throttle. Reduced engine speeds cause poor performance of the equipment. For example, If you need to adjust the forward speed of your tractor, change gears or change transmission range.
  • Another reason you should always run at full throttle is to help the engine maintain the engineered operating temperature - Reduced engine speed reduces the cooling air flow over the cooling fins, which can cause overheating and reduced engine life.
  • Reduced engine speed also reduces the amount of oil being circulated to lubricate the engine, which also can cause shortened engine life.
  • Finally, on engines that are equipped with electric start and battery, the engine needs to run at full throttle in order for the alternator stator to produce enough voltage to charge the battery. Quite often we will see a tractor that keeps having battery failures or dead batteries that is traced to the user operating the equipment at part throttle for extended periods of time.
  • Every manufacturer of air-cooled engines recommends that engines be operated at the full throttle setting (top governed RPM, Also known as "Top No Load") for best performance and longer engine life.

    So, in short, Running an engine at SLOWER speeds can actually work to SHORTEN the engine's life.

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    22.11.2013. 22:26 | by Brian Gustin

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