What is the ratio for a 3.5 sears boat motor?

The typical gear ratio for a 3.5 horsepower Sears boat motor, often manufactured by brands like Eska, is usually around 2:1 or 2.5:1. This means that for every turn of the propeller, the engine turns two or two and a half times. However, it's always best to consult the specific motor's manual for precise specifications, as variations can occur.