When I tried starting my old Howard, after a couple of years of it standing in the shed, I found the float chamber filled with yellow jelly - the dreaded ethanol-laced petrol had worked its malign magic on susceptible components in the old Kohler carburettor! Attempts to cur ethe problem using materials in the workshop simply didn't work - the ethanol just corroded or dissolved whatever I tried. I could have put a modern carburettor on it, but that would have needed a hand-operated throttle, so I ordered this kit last resort. And it worked immediately - second pull of the starter cord and the old beast rumbled into life again. So quite simply, it does exactly what it claims to do - renovates the old Kohler carb, and brings the engine back to life. Highly recommended - especially as there are some cheapo immitations out there that may or may not be up to the job.