However, we can estimate the horsepower range for a 291 cc engine based on typical assumptions. Generally speaking, smaller engines have lower power outputs compared to larger engines. For a small engine like 291 cc, we can expect the horsepower to be in the range of a few horsepower to a dozen or so horsepower.
For instance, some small motorcycles or scooters with engines around 300 cc might produce around 10-20 horsepower. However, this can vary widely based on the specific engine's design, technology, and engineering optimizations.
Therefore, without knowing the specific engine in question, it's challenging to give a precise horsepower figure. To obtain accurate information about the horsepower of a specific 291 cc engine, it's best to refer to the manufacturer's specifications or consult with an engine expert.