HM80 / HM90 / HM100 TECUMSEH ENGINE MODELS As:

HM80-155571S HM80-155572S  HM80-155596S
HM80-155597S  HM80-155603S  HM80-155638S
HM80-155651S  HM80-155652S  HM80-155653S
HM80-155654S  HM80-155657S  HM80-155658S
HM80-155687S  HM80-155571P  HM80-155571R
HM80-155572P  HM80-155596R  HM80-155617R
HM90-156013B  HM90-156013C  HM100-159402P
HM100-159423P  HM100-159400P  HM100-159401P
HM100-159403P  HM100-159405P  HM100-159409P
HM100-159435P  HM100-159294M

Tecumseh Replacement Part #:640023,640051,640140,640152, 640152A