my crank is loose and moves side to side as i peddle how do i mend it myself

andy, June 2009

Have a look at this site, My whole pedal assembly was rocking side to side, fixed by adjusting as shown in videos on this site..
http://bicycletutor.com/part/bottom-bracket/

Bob, May 2010

As the cranks enter the bottom braket, there should be two large adjuster nuts. loosen the outer one off and nip up the inner one then thighten up the outer one.
But if the play is that bad I would suggest stiping it all down checking the bearings, re-grease and then put back together

Colin, June 2009