Single roller concrete finishing machine

A concrete finishing machine comprising:

• a roller having a first end and a second end;
• a primary motorized unit coupled to said first end of said roller via a drive shaft, said primary motorized unit being individually operable, said primary motorized unit including a first base on which an engine is mounted, said first base having (1) wheels, and (2) a first handle having two ends, one end of said first handle being pivotally connected to said first base via a pin so that said first handle is swingable relative to said first base in a horizontal plane about said pin, said other end of said first handle including a first pair of handlebars;
• an engaging lever rotatably mounted on said first handle and coupled to a cable that is connected to a motor mounted on said first base, said engaging lever movable to a first position in which said cable causes said motor to rotate said drive shaft and a second position in which said cable disengages an operative connection between said motor and said drive shaft;
• a secondary unmotorized unit coupled to said second end of said roller, said secondary unmotorized unit being individually operable, said secondary unmotorized unit including a second base having (1) wheels, and (2) a second handle having two ends, one end of said second handle being pivotally connected to said second base, said other end of said second handle including a second pair of handlebars, said second handle being swingably adjustable in the horizontal plane;
• and
• an adjustable foot respectively projecting from each of said first and said second handles;
• wherein each of said primary motorized unit and said secondary unmotorized unit is positionable between (1) a transport position in which said wheels are engaged with the ground, and (2) a finishing position in which entire circumferences of said wheels are elevated above a lower most portion of said roller, such that said wheels do not support said primary motorized unit and said secondary unmotorized unit during a finishing operation;
• and wherein a relative position between (1) said drive shaft, and (2) said wheels of said primary motorized unit remains constant in said transport and said finishing positions.