Re: Tecumseh 7.5hp outboard boat motor
That outboard was made by Eska for Sears. Parts are available from
www.certifiedpartscorp.com, who bought all of Eska's parts when the company folded.
Call the number at the website with your Sears model number in hand, and the guy there will be able to tell you if he has the parts you need.
That said, I wouldn't spend much on your outboard. Its value, even running, is quite low, and you'll likely spend more on parts than the engine is worth. There are plenty of running 7.5 Ted Williams outboards out there for $100 or so.
At best, they're adequate, if noisy, shaky, and hard to keep in service. Any Johnson or Evinrude 6hp will run circles around them. Maybe even a 5hp.