Salam,I have a landirenzo cng kit ,model cn-04 ,what should be the air gap or valve clearance (mm) in the first stage chamber?
Brother,i don't understand what valve clearance are you talking about,as per my knowledge there is a calibrated spring inside the cover as you pointed out with arrow mark and it is not adjustable.
@argtr65The spring is attached to the rocker arm type that consist of the screw which is adjustable and that screw controls the valve opening and closing for allowing the gas to enter the first stage chamber.4 is the valve and the circled portion is the screw which is adjustable.