Firts Most ECHO Models PB-265LN, PB403H, PB403T, PB413H , PB413T, PB460LN, PB461LN, PB500, PB500H, PB500T, PB610, PB620, PB620H, PB620ST, PB650, PB650H, PB650HT, PB651, PB651H, PB750, PB750H, PB751, PB751H, PB751T, PB755 Series Backpack Blowers
PB-750H serial number: 05001001 - 05999999 - back pack frame, harness
PB-750H serial number: 07001001 - 07999999 - back pack frame, harness
PB-750T serial number: 05001001 - 05999999 - back pack frame, harness
PB-750T serial number: 07001001 - 07999999 - back pack frame, harness
PB-751H serial number: 06001001 - 06999999 - back pack frame, harness
PB-751H serial number: 07001001 - 07999999 - back pack frame, harness
PB-751T serial number: 06001001 - 06999999 - back pack frame, harness
PB-751T serial number: 07001001 - 07999999 - back pack frame, harness
PB-755 serial number: P38526001001 - P38526999999 - back pack frame, harness
PB-755H serial number: 06001001 - 06999999 - back pack frame, harness
PB-755H serial number: 07001001 - 07999999 - back pack frame, harness
PB-755H serial number: P06913001001 - P06913999999 - back pack frame, harness
PB-755H serial number: P08511001001 - P08511999999 - back pack frame, harness
PB-755H serial number: P10012001001 - P10012999999 - back pack frame, harness
PB-755SH serial number: P04311001001 - P04311999999 - back pack frame, harness
PB-755SH serial number: P04412001001 - P04412999999 - back pack frame, harness
PB-755SH serial number: P04513001001 - P04513999999 - back pack frame, harness
PB-755SH serial number: P43114001001 - P43114999999 - back pack frame, harness
PB-755SH serial number: P53014001001 - P53014999999 - back pack frame, harness
PB-755SH serial number: P54013001001 - P54013999999 - back pack frame, harness
PB-755ST serial number: P04011001001 - P04011999999 - back pack frame, harness
PB-755ST serial number: P04112001001 - P04112999999 - back pack frame, harness
PB-755ST serial number: P04213001001 - P04213999999 - back pack frame, harness
PB-755ST serial number: P43214001001 - P43214999999 - back pack frame, harness
PB-755T serial number: 06001001 - 06999999 - back pack frame, harness
PB-755T serial number: 07001001 - 07999999 - back pack frame, harness
PB-755T serial number: P07013001001 - P07013999999 - back pack frame, harness
PB-755T serial number: P08611001001 - P08611999999 - back pack frame, harness
PB-755T serial number: P10812001001 - P10812999999 - back pack frame, harness