front sprocket nut size?

[fast1200gp]

Whats the size of the front sprocket nut? and whats the tourqe ? any how to tips would be helpful too thanks guys..

 

[ranman]

i used a 1 1/4 scoket. a board through the wheel to pervent it fron spining. use a rubber malet to hit the wrench to help with losening the nut. i`m not sure the torqus i think 105 check the on line manual in the Maintenance and Do-It-Yourself
i just checked 105foot pounds use thread locker on the allen bolt