Re: 612 Stalkmaster on 9860?
I ran a 9870 and 612c stalkmaster this year and have run 9860's previous. First of all we had a 16-30 head on the 9860 and had to add two lift cylinders to pick it up where the 9870 would pick it up with the factory lift. The 612 weighs about as much as are 16 row did so don't think a 9860 will pick it up without adding cylinders. As far a power goes most of the time the 9870 didn't pull down but in healthy wetter corn it took all it had to run the head so depending on the situation the 9860 would be a concern on horsepower. good luck.
I ran a 9870 and 612c stalkmaster this year and have run 9860's previous. First of all we had a 16-30 head on the 9860 and had to add two lift cylinders to pick it up where the 9870 would pick it up with the factory lift. The 612 weighs about as much as are 16 row did so don't think a 9860 will pick it up without adding cylinders. As far a power goes most of the time the 9870 didn't pull down but in healthy wetter corn it took all it had to run the head so depending on the situation the 9860 would be a concern on horsepower. good luck.