Thanks for that TLRam1,
The answers to your questions are as follows:
1 I bought the bike off ebay. It is a brand new bike that has been used as a display item and there was no battery with it.
2 There was no manual with it and I have been unable to find one to download
3 There seems to be very little information about this particular model online
4 The battery I have is suitable for a Pulsar 125. It is a very tight fit in the battery box and I am struggling to get the fixing bolt back in.
5 I will do this and look for a suitable Yuasa battery. The one I have is a Landport.
Thank you so much for your help and advice