retcol
0
On my 83 Yamaha FJ1200, it has the aviation type fuel cap where you unlock the cap with the ignition key and the hinged cap swings up to expose the fuel opening. Well, my key goes easily into the lock and turns about a quarter turn, but then stops and will not unlock the cap. I've sprayed various lubs and break free sprays into the key hole with no luck. I've tapped on the cap with a rubber mallet, tapped on the key with the rubber mallet as I tried to turn the key, but no luck. I don't know if the problem is in the lock itself or in the locking mechanism where maybe the locking bar has stuck from gummed gas, rust, or who knows what. Does anybody have any ideas what else I could try before I ruin the lock by drilling it out? Thanks