well my top ends a bit noisy and knocks so my first guess is its the valve clearances need aadjusting, but i cant anywhere find what the valve clearances should be for my xj400 1991, i cant even find them for a xj600 which is an english model, and i dont want to pay £30 for a haynes for a 600 when its not even for my engine so does anyone know what they should be and if they can be adjusted or if i need special tools as all i could find is about the xs400 which needs valve adjusting pads or something but its a completely different engine, any help will be appreciated, adam

This is from the XJ 400S japanese owner´s manual : IN : 0.11 - 0.15

EX : 0.21 - 0.25

and this is from general info :

your a legand, ill have a quick look when im at college and have more tools on monday and hopefully it just needs adjusting, thanks