A combine harvester is one of the highest-value machines on a farm and one of the most complex — it cuts, threshes, separates and cleans grain in a single pass, and it only works a few weeks a year. That seasonality is a buyer’s advantage: prices soften after harvest, and there is a well-understood used market. But a combine is judged differently from a tractor — engine hours are almost a side note. Here is what actually matters.
Separator hours, not engine hours
Read the separator hours first
A combine has two hour meters that matter: engine hours and separator (threshing) hours. Separator hours tell you how much actual harvesting the machine has done and how worn its most expensive systems are. A combine can have modest separator hours relative to engine hours if it idled a lot — always check both, and weight separator hours most heavily.
The threshing and separation system
This is the heart of the machine and the most expensive area to repair. Inspect carefully:
- Open the machine and inspect the rotor or cylinder and concaves for wear, damage and missing rasp bars.