Since "RPM" can refer to several different components, this guide covers the three most critical areas: the , the Thresher (Drum) , and the Cleaning Fan . 1. Engine Operating Speed
If you see grain on the ground behind the combine, your RPM is likely too high . If there is too much "trash" in your grain tank, your RPM is too low . Standard Range: 600 – 950 RPM. 4. Working Ground Speed Zmaj 142 RPM
if you notice your drum RPM dropping while the engine RPM stays steady, check the tension on the main drive belt. Since "RPM" can refer to several different components,
Always engage the header and threshing mechanism at low idle before ramping up to full working RPM to avoid snapping belts or damaging the clutch 1.4.2 . 2. Threshing Drum (Cylinder) RPM If there is too much "trash" in your