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The gearbox of the Neva MB2 walk-behind tractor, manufactured in 1998, has not been repaired before. Reason for the gearbox revision: increased noise, radial play of the input (primary) shaft, bronze dust in the oil, unclear gear shifting. Identified defects: wear of the input shaft bushing (bearing 204 is installed on the pulley side), chipped tooth of the intermediate shaft gear, wear of the fork and gear shift lever.