The only image I can find of a definite F30 in the archive is this one. It’s also from a Honda brochure so it’s a certain image. Age unknown.

Hi
If its a biggish machine from the dates you mention could be a F80 or F190. There should be an ID plate on the engine.
Both these machines had twin cylinder upside down engines with the crankshaft at the top. Here’s a couple of my F80 photos.
If its an F80 I have workshop and owner’s manuals which I can send you.

Peter

Hello,

Could you please email any manuals for F100, F90, F190 to sultannidal@gmail.com

Appreciate if you could advise where i can get Contact breakers for the F190, or what alternative can be used if the breaker is damaged.

Regards,