take the headlight out,remove the 10m bolt in the pipe/wire cover on the n/s inner wing,pull up the cover and you can get on the tensioner a peice of piss.you need a 7m allen key for the centre and a 24m spanner for the outside of the tensioner.the allen key holds the tensioner and the 24m is used to adjust up the belt,once the belt is adjusted up tighten the allen key to hold the tension.