Re: eska(sportfisher)1971 model #1733c 5hp
it is an eska with a tecumseh power head AV-600, and a tecumseh carb which you should be able to get parts at any old tecumseh dealer "small engine mechanic". most of the parts come in a standard rebuild kit for a typical snowblower, "bowl gasket,welch plugs,needle,seat,bowl nut gasket. what are you trying to trouble shoot. do you have a spark and compression tester? most of the eskas are very similar and can be easily troubleshooted by poting any symptoms that you are having with your unit. good luck on your project.