stangmike

I´m looking for some help for a female friend in detroit area. she has a GN-250, 1983 I beleive and she has no owners manual. She wishes to raise the seat but can find no bolts or latch to do so. I´ve owned lots of enduros and the early ones all had seatss the were hinged I believe. can anyone eplain how to open or unbolt the seat from this bike? Also looking for spark plug replacement info so beleives the plug is located back more towards the seat, rather than as I figure it should be more or less centered under the gas tank.