Originally Posted by
desertbird
HSN 4
LSN 6.5
Thanks for trying to help me, but you're way off, especially on the LSN. You numbers didn't sound right so I emailed GRP support in Italy and their reply is below:
"Please return both needles to their original position (all in). Then, turn the low speed needle fully 3,5 times out and the high speed needle 3 times out for .21 engines."