Compatible with: Echo PB-651H (06001001 - 06009187) Backpack Blower PB-651H (06009188 - 06999999) Backpack Blower PB-651H (07001001 - 07001236) Backpack Blower PB-651H (07001237 - 07999999) Backpack Blower PB-651T (06001001 - 06008327) Backpack Blower PB-651T (06008328 - 06999999) Backpack Blower PB-651T (07001001 - 07001434) Backpack Blower PB-651T (07001435 - 07999999) Backpack Blower PB-751H (06001001 - 06008032) Backpack Blower PB-751H (06008033 - 06999999) Backpack Blower PB-751H (07001001 - 07001200) Backpack Blower PB-751H (07001201 - 07999999) Backpack Blower PB-751T (06001001 - 06007341) Backpack Blower PB-751T (06007342 - 06999999) Backpack Blower PB-751T (07001001 - 07001655) Backpack Blower PB-751T (07001656 - 07999999) Backpack Blower PB-755H (06001001 - 06001026) Backpack Blower PB-755H (06001027 - 06999999) Backpack Blower PB-755H (07001001 - 07001018) Backpack Blower PB-755H (07001019 - 07999999) Backpack Blower.