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In the summer of 1997, the 300-series Massey Fergusons were replaced by the more modernly styled 4200 series. However, under the bodywork, the technology was mostly familiar English Massey Ferguson. The cab was new, but the noise level was above 80 decibels. The single-lever shuttle transmission was familiar from previous models. The electric lift was now available as an optional extra. The feeler operated in the traditional way via the push rod.

The two smallest models, 4215 (52 hp) and 4220 (60 hp), were equipped with an updated 3-cylinder Perkins Fastram engine, featuring a new key-switch shutoff. These models had an 8+8 shuttle transmission (or 12+4 Synchro Power) allowing speeds of up to 30 km/h. The 4215 was the only model in the range equipped with organic clutch facings. The hydraulic performance of the 3-cylinder models was lower than that of the other models, and the cab was always a low LoProfile model (interior photo above). Even these models now had a square-shaped rear axle housing structure.

The 4225 (65 hp) and 4235 (75 hp) models were equipped with an updated 4.1-liter Perkins engine, featuring an internally reinforced cylinder head and engine block derived from the 1000 series. The 4245 (85 hp) had a turbocharged Perkins Quadram engine. These models in Finland were equipped with a cab-switchable 1000 rpm PTO, 66 l/min hydraulic pumps, and a top speed of 40 km/h. The transmission in Finland was either a 12+12 shuttle gearbox or an 18+6 Speedshift transmission equipped with a quick shift but without a shuttle. Additionally, transmissions similar to those in the 3-cylinder models were also available.

In 1999, it was finally possible to combine the quick shift and shuttle in the same tractor. Hydraulic shuttle-equipped 12+12 and 24+24 transmissions were introduced. The softness of the hydraulic shuttle switching could be adjusted from the cab. In the 4-cylinder models, the standard cab in Finland was a high flat-floor version, with LoProfile or sloped-nose models as options. Additionally, forestry cabs with swivel seats and more rear legroom were built in Finland.

The difference of the 4245 compared to the smaller models is a 13" clutch and a somewhat sturdier front axle, and in Finland, an additional auxiliary lift cylinder, which allowed achieving a lifting capacity of 4000 kg.

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