Hi Bax
Can you tell me how you know what carb is on my 160 What is the difference between the older version with the air-bleed carb and the newer version with the modern carb with idle mixture adjustment I dont know if i have the older or newer one
Thanks
Styk

The difference is that one carburetor has the idle mixture adjustment at the throttle arm, air-bleed carb has an airbleed screw and a hole in the carb body that has its opening adjusted by the air-bleed screw. If you examine the carburetor, the difference is obvious. Any engine sold in the past several years should have the carb with the mixture control screw and not an air-bleed screw.