Bertie 314 #1 Posted February 15, 2020 Anyone advise on the best carb settings for my 704 with the 161 engine please.... Share this post Link to post Share on other sites
stevasaurus 23,281 #2 Posted February 15, 2020 The top screw is your main fuel adjustment...gently turn in to bottom out...back out 2 turns. The screw on the left is your idle fuel adjustment...gently bottom out and back out 1 1/4 turns. The screw on the right is your idle speed adjustment...set to 1200 RPM's at full throttle...no load. 1 Share this post Link to post Share on other sites
lynnmor 7,822 #3 Posted February 15, 2020 3 hours ago, stevasaurus said: The top screw is your main fuel adjustment...gently turn in to bottom out...back out 2 turns. The screw on the left is your idle fuel adjustment...gently bottom out and back out 1 1/4 turns. The screw on the right is your idle speed adjustment...set to 1200 RPM's at full throttle...no load. Set to 1200 at minimum throttle. Allow to warm up and adjust the idle mixture screw for best idle, readjust speed screw as necessary and repeat. Quickly open throttle fully and check for instant response, adjust high speed screw a bit if required. 1 Share this post Link to post Share on other sites
