I have an old single cylinder Techumseh outboard. It has "MONO" stenciled on the fuel tank. It has a metal tag on it with the numbers "T-635-06B" and "5461361". I figured they were the model and serial numbers. I'd appreciate any info about this little old outboard. Who sold it, how many horsepower is it, how old is it and where I might find a manual for it. Thanks in advance.