It is recommended to replace the seal when:

330X manufactured after 2014v43Check the appearance against the image below

330X manufactured before 2014v45 had Dunker motor

but if it has gradually deteriorated

Soft sealing strip that is located between the lower and upper chassis halves on the larger machines

Planetkugghjul stål Linix 3st Husqvarna Automower 320 330X 420 430X 435X 440 450X 520 550320 330X 420 430X 435X 440 450X 520 550 It is recommended to replaceSteel planetary gears that is installed closest to the wheel. Fits: 220AC 305 308 Early 320Gardena R160, several other Gardena. Suitable for example article number: 5026336 Check the appearance against the image below, If the gearbox is black with the text LINIX, it fits. Characteristics: Hardened milled gears in high quality steel in house production. Contains: 3x Planetary gears