In the 1973 movie Texas chainsaw massacre how many people are killed by a chainsaw?

In the original 1973 film "The Texas Chain Saw Massacre", only one person is killed by a chainsaw.

This is the character of Franklin, who is chased and killed by Leatherface.

While Leatherface does use the chainsaw in a threatening manner throughout the film, he primarily uses it to dismember bodies and it is never used to kill any other character.