A surgical instrument, comprising: a handle; a firing drive, comprising: a firing trigger operably coupled to said handle, wherein said firing drive is configured to generate a firing motion upon a first actuation of said firing trigger (54, 204) and a retraction motion upon an other actuation of said firing trigger (54, 204), and characterised by; a first ratchet assembly, comprising: a first ratchet wheel having a plurality of ratchet teeth; and a first pawl pivotably connected to said firing trigger, wherein said first pawl is selectively engageable with said ratchet teeth of said first ratchet wheel; and a second ratchet assembly, comprising: a second ratchet wheel having a plurality of ratchet teeth; and a second pawl pivotably connected to said firing trigger, wherein said second pawl is selectively engageable with said ratchet teeth of said second ratchet wheel; an elongate shaft assembly coupled to said handle, wherein said elongate shaft assembly is operably engaged with said first ratchet wheel and said second ratchet wheel; and an end effector coupled to said elongate shaft assembly, said end effector comprising: an elongate channel configured to operably support a staple cartridge therein; an anvil movably coupled to said elongate channel; and a cutting member operably supported within said elongate channel, wherein said cutting member is operably engaged with said elongate shaft assembly, wherein, when said firing trigger is engaged with said first ratchet wheel, said first actuation advances said cutting member a first distance, wherein, when said firing trigger is engaged with said second ratchet wheel, said other actuation retracts said cutting member a second distance, and wherein said second distance is greater than said first distance. a handle; a firing drive, comprising: a firing trigger operably coupled to said handle, wherein said firing drive is configured to generate a firing motion upon a first actuation of said firing trigger (54, 204) and a retraction motion upon an other actuation of said firing trigger (54, 204), and characterised by; a first ratchet assembly, comprising: a first ratchet wheel having a plurality of ratchet teeth; and a first pawl pivotably connected to said firing trigger, wherein said first pawl is selectively engageable with said ratchet teeth of said first ratchet wheel; and a second ratchet assembly, comprising: a second ratchet wheel having a plurality of ratchet teeth; and a second pawl pivotably connected to said firing trigger, wherein said second pawl is selectively engageable with said ratchet teeth of said second ratchet wheel; a firing trigger operably coupled to said handle, wherein said firing drive is configured to generate a firing motion upon a first actuation of said firing trigger (54, 204) and a retraction motion upon an other actuation of said firing trigger (54, 204), and characterised by; a first ratchet assembly, comprising: a first ratchet wheel having a plurality of ratchet teeth; and a first pawl pivotably connected to said firing trigger, wherein said first pawl is selectively engageable with said ratchet teeth of said first ratchet wheel; and a first ratchet wheel having a plurality of ratchet teeth; and a first pawl pivotably connected to said firing trigger, wherein said first pawl is selectively engageable with said ratchet teeth of said first ratchet wheel; and a second ratchet assembly, comprising: a second ratchet wheel having a plurality of ratchet teeth; and a second pawl pivotably connected to said firing trigger, wherein said second pawl is selectively engageable with said ratchet teeth of said second ratchet wheel; a second ratchet wheel having a plurality of ratchet teeth; and a second pawl pivotably connected to said firing trigger, wherein said second pawl is selectively engageable with said ratchet teeth of said second ratchet wheel; an elongate shaft assembly coupled to said handle, wherein said elongate shaft assembly is operably engaged with said first ratchet wheel and said second ratchet wheel; and an end effector coupled to said elongate shaft assembly, said end effector comprising: an elongate channel configured to operably support a staple cartridge therein; an anvil movably coupled to said elongate channel; and a cutting member operably supported within said elongate channel, an elongate channel configured to operably support a staple cartridge therein; an anvil movably coupled to said elongate channel; and a cutting member operably supported within said elongate channel,