however space 156 indeed is rectangular and connector set 148 latches underneath a flange of body 14 above footpad 22 connector sets 150 and 151 are designed to connect bumper 120 to frame 42 of bumper 30 fig8 illustrates possible positionings of bumper 120 frame 42 and side wings 38 relative to each other and body 14 of automatic swimming pool cleaner s as shown in fig8 bumper 30 may be contoured differently than appears in fig1 in order suitably to receive bumper 120 connector set 150 may comprise protrusions 150 a and 150 b each adapted to be received by and engage a boss such as or similar to collar 54 however because the mechanism for connecting bumpers 120 and 30 is not critical to the invention bosses or collars need not necessarily be present and thus are not shown in fig8 and set 150 may be configured other than as protrusions 150 a and 150 b connector set 151 likewise comprises protrusions 151 a and 151 b designed to be received by a boss collar or opening of some sort protrusions 151 a and 151 b may be similar to protrusions 150 a and 150 b although preferably they have smaller diameter and are oriented ninety degrees from the orientation of protrusions 150 a and 150 b again however set 151 need not be configured as shown in fig8 and other methods of connecting bumpers 30 and 120 if such is desired may be utilized in use bumper 120 extends beyond the periphery of disc 26 in some planes and paths of travel therefore second ends 136 a and 136 b or edges 144 a or 144 b of bumper.