Method of manufacturing a chain , for example a cutting chain for a chain saw, comprising the steps of: a) providing or pre-assembling a plurality of chain sub-units , each sub-unit being made by means of the sub-steps of: - providing a plurality of drive links and connection links , each of said links identifying at least a pair of through holes (8, 8"); - placing the drive links alongside each other in a chain-extension direction (X); - for each pair of adjacent drive links , arranging in a bridging manner and on both sides a pair of connection links so that the lumina of the through holes (8") of the links arranged in a bridging manner are at least partially aligned with the lumina of the through holes of the drive links ; - constraining the drive links and the connection links in the chain-extension direction (X), by means of a plurality of pivot pins housed in the through holes (8, 8") with the partially aligned lumina, with the possibility of rotation of the links around axes (R) identified by said pins; characterized in that are further comprised the following steps: b)testing at least a sufficient property and/or a sufficient functionality of each chain sub-unit ; c) combining with a head-to-tail coupling the plurality of chain sub-units provided with the sufficient property and/or sufficient functionality of step b), to make a chain of a predefined length. a) providing or pre-assembling a plurality of chain sub-units , each sub-unit being made by means of the sub-steps of: - providing a plurality of drive links and connection links , each of said links identifying at least a pair of through holes (8, 8"); - placing the drive links alongside each other in a chain-extension direction (X); - for each pair of adjacent drive links , arranging in a bridging manner and on both sides a pair of connection links so that the lumina of the through holes (8") of the links arranged in a bridging manner are at least partially aligned with the lumina of the through holes of the drive links ; - constraining the drive links and the connection links in the chain-extension direction (X), by means of a plurality of pivot pins housed in the through holes (8, 8") with the partially aligned lumina, with the possibility of rotation of the links around axes (R) identified by said pins; - providing a plurality of drive links and connection links , each of said links identifying at least a pair of through holes (8, 8"); - placing the drive links alongside each other in a chain-extension direction (X); - for each pair of adjacent drive links , arranging in a bridging manner and on both sides a pair of connection links so that the lumina of the through holes (8") of the links arranged in a bridging manner are at least partially aligned with the lumina of the through holes of the drive links ; - constraining the drive links and the connection links in the chain-extension direction (X), by means of a plurality of pivot pins housed in the through holes (8, 8") with the partially aligned lumina, with the possibility of rotation of the links around axes (R) identified by said pins; b)testing at least a sufficient property and/or a sufficient functionality of each chain sub-unit ; c) combining with a head-to-tail coupling the plurality of chain sub-units provided with the sufficient property and/or sufficient functionality of step b), to make a chain of a predefined length. <EOS>