RedactedNarrative: Vessel #1 was being operated by passenger #1 floating close to shore, 1/4 mile to the  South, South West of the Clear Bay boat ramp. Vessel #1 was experiencing engine problems when Subject1 would put motor into gear. Subject1 had Operator that was a passenger now sitting at the helm to operate the forward and reverse control lever. Subject1 had taken off the motor cover and was trying to keep motor running while over riding the choke by hand, as he was working on and above the motor and telling Operator to push the lever forward, then to pull back to neutral. When doing so Operator pulled transmission lever in reverse causing the motor jump up causing the exposed turning fly wheel to strike the left outside portion of Subject1's lower leg. Subject1 got himself free from the motor and was able to shut down vessel. Subject1 then was able to self compress his wound and called 911 by his cell phone having Norman Fire and Little Axe Fire assist him and his passengers. Subject1 was transported by Norman EMS to the East side Norman ER, and was treated and released that same evening. Injuries was a 6inch open gash wound that received approx. 12 stitches. The Highway Patrol was not notified of this incident until the next day.