Genuine Evinrude BRP ENGINE TUNER:

PN 771297, superceded by 777185.

For use in engine tune up to remove gum and varnish build-up, excessive carbon deposits from rings, pistons, valves and ports. Spray through carburetor intake of 2- and 4- cycle engines for improved performance. Not to be mixed with fuel. 13 oz. Spray Can.