Undo the circlip under the pulleys under the gearbox the slide pulley an key way steel out, then take off old belt, put new belt on pulley{must be the same size belt but new} then refit pulley and key way steel, then refit circlip
muzza
December 2013
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix lawn mowers.