Need help with the pump

[Kjeldsen]

Hey there i have been a bit on TikTok and saw som guys have the good Old D24 do a chop chop idle like the good Old traktor pullers, but when i try and fiddle with the fuel screw and idle screw i cant get it right, i almost git it like the good Old chop chop but dies right before it �� spare for the Old guy stuff with oooooh dont do that and blah blah blah �� i want it to do it and need help how to ��

Like this
https://vm.tiktok.com/ZGdRFwM75/