This part of JB/T 9803 specifies the test methods for tillage machines. This section applies to tillage machines with a power of not more than 7.5kW and used for plowing and land preparation of water and dry fields.
JB/T 9803.2-2013 Referenced Document
GB/T 1147.2 Small and medium power internal combustion engines—Part 2: Test methods*, 2017-02-28 Update