All our mixed gas generators (L/45; L/80; L/160; L/350; L/700) require a regular, yearly maintenance which can be done either by sending the machine to the manufacturer (Elettronica Todescato S.r.l.), or to an authorized dealer/distributor of your area, or carried out by the user himself, by carefully following our youtube tutorial videos, under the section " useful video - maintenance". Reading the user's manual is strongly suggested, too.
MAINTENANCE VIDEOS:
http://www.elettronicatodescato.com/eng/video-utili.php?ty=2