How do I race against the computer? Jovi Mirkovic November 02, 2017 18:25 The Rokai has a race mode program to allow you to race against the computer. Follow the instructions below to set up a race. Related articles Which exercises can I perform on the Rokai? Assembling your Rokai Rowing Machine How can I measure my heart rate when working out? An introduction to the Rokai There is an E-5 error message on the screen when I power up the console Comments 0 comments Article is closed for comments.