Re: 1952 5 hp carb settings
Hey Josh<br /><br />Here's what I found for a 5.5 HP and should work fine with yours.<br /><br /> Adjusting the High and Slow Speed Needle Valves <br /><br />Adjusting the carburetor in a tank is not the same as adjusting for open water. You can do initial settings in a tank and then fine tune the settings once you are out on a body of water.<br /><br />Screw in the bottom (high speed) needle until seated and then back out 1 turn.<br /><br />Screw in the top (slow speed) needle untill seated and then back out 1.5 turns.<br /><br />(High Speed) Start engine (it will run pretty rough), shift into forward gear, take up to full throttle. In segments of 1/8 turn, waiting for the engine to respond between turns, start turning in the bottom high speed needle valve. You'll reach a point whereas the engine will either start to die out or spit back (sounds like a mild backfire). At that point, back out the needle valve 1/4 turn. Within that 1/4 turn, you'll find the smoothest setting. <br /><br />(Low Speed) Slow the engine down to where it just stays running. Shift into neutral. Again in segments of 1/8 turns, start to turn the top needle valve in. Wait a few seconds for the engine to respond. As you turn the valve in, the rpms will increase. Lower the rpms again to where the engine will just stay running. Eventually you'll hit the point where the engine wants to die out or it will spit back. Again, at that point, back out the valve 1/4 turn. Within that 1/4 turn, you'll find the smoothest slow speed setting. <br /><br />When you have finished the above adjustments, you will have no reason to move them again unless the carburetor fouls/gums up from sitting, in which case you would be required to remove, clean, and rebuild the carburetor anyway.
.<br />thanx for any help.