Same engine, same output, same mowing performance
So, what has changed? The gas engines in John Deere commercial mowing equipment* are rated by the engine manufacturer under SAEJ1995 using a certified horsepower testing procedure. The testing method and results provide a verified horsepower number.
Why is the engine manufacturer now using a certified power rating?
John Deere is dedicated to providing quality products to customers, especially when our customers rely on equipment for their business. John Deere is requiring its engine suppliers to use the certified testing procedure. This ensures that the rating reflects the test results in accordance with SAE standards. John Deere is leading the way to ensure customers have consistent horsepower ratings.
Why is the horsepower number different than previous models?
Different rating methods can give different results for the same engine. This certification testing ensures horsepower ratings consistent with SAE standards. When comparing commercial mowing products, the same engine model tested to a different standard may have a different horsepower rating.
Current SAE Standards
To learn more about the organization behind these standards, visit SAE International online at www.sae.org. Current standards for commercial mowing equipment include:
*John Deere ZTrak 900 Series, ZTrak 700 Series, QuikTrak 600 series, Commercial Walk-Behind Mowers gas engines.