a machine housing;

a saw blade drivable by a motor into a stroke motion;

a guide device having two guide elements resting against said saw blade at opposite sides of said saw blade and operative for guiding and supporting said saw blade crosswise to a sawing direction, said guiding device further having a two-armed pivot lever with lever arms on each of which a corresponding one of said guide elements is situated, said guiding device also having an adjusting mechanism for adjusting a transverse spacing between said guide elements; and

a holder in which said guide device is integrated and which is configured to be mounted in said machine housing and/or to a base plate attached to said machine housing, said pivot lever being pivotally supported on said holder and said adjusting mechanism being accommodated in said holder, wherein:

said adjusting mechanism has a slider which is loaded by compression springs and is guided so that said slider is slidable inside said holder in a longitudinal direction, said lever arms of said pivot lever being oriented away from said guide elements and each coupled to said slider by a respective pin/slot connection wherein slots are inclined so that their slot axes enclose an acute angle oriented toward said guide elements, said compression springs being situated on a side of said slider oriented away from said guide elements and resting against said slider and against said holder;

said guide device has a locking mechanism for locking said slider in a park position in which said guide elements are spaced apart from said saw blade; and

said locking mechanism has a bolt which protrudes from said slider crosswise to its sliding direction and simultaneously operates as a grasping part for manually sliding said slider and has a locking lever attached to said holder in a pivoting fashion, said locking lever having a locking hook which embraces said bolt in a parked position of said slider.