At the end of 1964, Ford introduced a new tractor series known as the 1000 series, even though the old Dexta and Major names were retained alongside the numbers in Europe. The updates compared to the old Fordson models were significant. For example, the engines were completely renewed, the gearbox consisted of 8+2 speeds except for the 2000 model, and as an optional feature, there was the advanced but problematic hydraulically selectable Select-O-Speed. It was based on three planetary gear sets, which, with servo-operated brake bands and multi-plate clutches, allowed for 10+2 gears without the use of a clutch.

The new engines were short-stroke. The 3-cylinder engines were equipped with a distributor pump, and the 4-cylinder inline engine in the 5000 model had a rotary pump. The 5000 featured a 12″ drive clutch instead of the 11″ found in other models, and an independent power take-off (PTO) was standard regardless of the drive clutch. Alongside the Select-O-Speed, all models were available with an independent 1000 rpm PTO and a road PTO. The hydraulics worked independently of the clutch in all models. Hydraulic functions included draft control, stepless position adjustment, and lift speed control. The 4000 and 5000 models had planetary final drives on the rear axle, and the brakes were oil-immersed disc brakes. Initially, the 2000 model lacked a differential lock.

Six-cylinder engines were installed in the sturdy 5000 model in many countries. The Finnish version was the OK-6, produced by the official importer Orasvuori's machine shop, with a 5.9-liter engine delivering 113 hp SAE.

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