Hi Jack thanks for your reply , agree very similar set up to the 46 . Will post some pics of the engine numbers for you ,

Would you know where I might be able to get some pics, manual , schematics ect for this machine . Just not sure if everything is there and not 100% sure of belt set up , does tensioner bar for belt push back or forwards ect , does belt run behind adjuster roller or in between

Cheers
Troy