1958 5.5 hp evinrude model 5516

i would like some info on how to set up the lean and rich knob and the high speed knob for the carb.and also why do i get so much gas and oil in the barrel after running the motor for a while.

Re: 1958 5.5 hp evinrude model 5516

If you have the motor running, you already have the idle speed screw close to where it should be. You can tweak it by closing it (clockwise) until the motor stumbles, then turning it out (counterclockwise) until the the motor stumbles again from too rich a mix. Then set the knob at the midpoint between the two test settings. These motors do indeed exhaust a lot of stuff -- just the nature of the beast. They take a rich fuel mix (25:1). The high speed knob is set at open throttle, or close to open, when running the motor on your boat -- can't do it very well in a test tank, as you should not run the motor at high speeds in a "tank" that most of us amateurs use.

Re: 1958 5.5 hp evinrude model 5516

oldboat1 thank you for the info so you are saying put 8oz to a 6gal tank of gas

Re: 1958 5.5 hp evinrude model 5516

Math lesson!<br /><br />one gallon = 128 ounces and to run the loder outboards you need a ratio of 25:1.<br /><br />six gallons = 768 ounces divided by the ratio of 24:1 = 32<br /><br />One quart of oil to 6 gallons of gas.<br /><br />Bob

Re: 1958 5.5 hp evinrude model 5516

NO! 16 oz. to 6 gallons.

Re: 1958 5.5 hp evinrude model 5516

16 oz to 6 gal is 50:1. There are 4 qts to a gal. = 1 qt to 6 gal = 25:1. Had a /56 5.5 rude. 25:1 is correct.

Re: 1958 5.5 hp evinrude model 5516

Bassman, the age of the motor (1958) it is a 1 quart vintage to 6 gallons. 50:1 could burn the motor up.<br /><br />Bob

Re: 1958 5.5 hp evinrude model 5516

These older small motors need to stick with their original 24:1 mix.Use tcw3 rated oil.<br /> 50:1 is ok back to 1960 bigger motors not using bushings.

Re: 1958 5.5 hp evinrude model 5516

nice math lesson Bob VT.