Originally Posted by Lone Rider
I don't know where you are,
He says "I am in the middle of Africa at the mo"
Just waht bit is the middle? CAR? Congo? Cameroon? Where ever F650s are not all that common.. but you could find one left behind by someone. However - look at the oil as teh first thing. It probably needs an oil change anyway. You may not 'need' a new filter as they maybe difficult to get. If you need a secondhand motor and get one from 'overseas' try to get one wiht new filters etc.
As 'Lone Rider' says - try F650.com - they know the motor...
If the taping noise is from the top of the motor that suggests looking in there for the loose bits... but I'd look at the oil first .. silver = toast.
Regards Frank Warner
motorcycles BMW R80 G/S 1981, BMW K11LT 1993, BMW K75 G/S