Fuel cap leak

[greenbarn]

I attached a picture of my 1500 fuel cap.  See if I have the location correct for what you are referring to.  The little "nipple" on the fuel tank cap goes down in this hole.  makes sense there would be a seal there.

I've had fuel leak from both my 800 and 1500 --  could never figure out why, now I see I do not have that seal on EITHER bike - no wonder I couldn't see anything wrong because both of them are the same.

[greenbarn]

Got a picture of that, or a diagram? 

[Gordo]

I just went through this with mine.  It dribbled out, and I compensated by not filling the tank.  I pulled the cap and confirmed all O rings were around top and bottom of the mounting screws.  What I noticed was the vent fitting off the tank no longer had the small gasket seal between the tank vent and the mount for the gas cap.  Have no idea how or when this went missing, but there was no rubber around the vent.  I ordered Kawasaki OEM Part # 92093-1030 online for a couple bucks and solved my problem.  Cancelled the order for a new cap.
Good luck

[49Reo]

When I got my 1500 the cap leaked when the tank was full. One of the o rings Troll mentioned was missing. New o ring fixed the leak.

[Troll]

Start out by making sure that all the screws (including the little, tiny ones), are tight. Check the vent hose to be sure it's not plugged. You will probably need to take it off the tank to get to the little phillips screws, be aware that there are 2 O rings on the large screws, so don't let them fall into the tank

[Old Drifter]

You may also try to cut one from an old rubber tire tube.

[pcarrell]

Go to an auto parts store and buy some gasket material and make your own.

[Big Foot]

My fuel cap leaks on my 2001 Drifter 1500. I call the dealer about replacing the gasket and he said I needed to buy the whole gas cap assembly for $85? It seems like it would be alot easier and cheaper to replace the worn out gasket?