Help! I have a 512 with 9.5 in compression, 2.5 in vacuum at 1000 RPM,Have installed a Promax on my center carburetor. has 3.5 in extra valve and 70 in nozzle. Afr value of 1000rpm is 11.7-12.2.
when it is strangled, it shoots into the carburetor. Do you have any tips?
Sincerely, Morgan