my advice is ignore the manual i have the 46 la and neither of the settings they state were right!!!.start with needle 3 turns out then prime it by putting finger over carb turn prop 6 turns not 2 as stated then connect glow plug and use starter to start it.when shes running just close needle valve till she starts running in 2 cycle mode then run a tank through it idling,then id put one more through it and close neddle a bit to lean her out more.give her some revs and just keep reving her and backing off the throttle to idle till the tank is empty.then go fly it and after each flight close needle a cpl of clicks each time till shes running at her peak!!.my 46 la is a great running engine so im sure youres will be just as good!!.