No, I doubt the OP's 3000rpm small petrol Genny will have an AVR, it'll
just
have a passive system of a cap and 2 diodes in the field winding. My 6KVA
certainly doesnt.

Mine is also a 6KVA set, maybe this one would be a bit better?
http://cgi.ebay.co.uk/ws/eBayISAPI.d...tem=4404176390
Do you think this would have the active electronic AVR?

Sparks...