How to get oil fill cap off

without the special wrench. Any ideas?? I assume to unscrew it counter clockwise but hell I might be wrong as it's a weird looking cap. I have tried all sorts of stuff and am wanting some more ideas Thanks

i changed it to one from a r6.

Just use a big screwdriver or something else that has a wide, flat blade.

I use the side of an open ended spanner. Same one that fits the sump plug, 17mm I think it is in metric.

get a use an open end wrench that's thick enough to fit in the curved slot.

get a use an open end wrench that's thick enough to fit in the curved slot. yep... ditto!

WTF did I post hehe. here comes the grammar police. I hate working nights!:lol

I still can't get the damn thing off

when you do get it off put a 02-03 R1 cap on. I wanted to knock my bike over last summer fighting with the 04-06 oem cap. it was hot as hell and the cap felt like it was welded on, damn rubber "bootay" kept slippin out fuhker is so shallow.... let me stop it can be a royal pain in the ass, bout to punch my monitor the frustration is still with me a year later lol!!!!

shop said it was one of the toughest they have had. Went there and bought my stuff and they did it for me :) They saw it as a challenge However, I did order a different cap for it

Tire iron with the hub cap remover on the end its like a ginourmous screwdriver. also order yourself a new cap. **** that yamahaha cap on there now.... you know the engineers got a laugh out of that one. i had the same problem and the tire iron did the trick

Just take a large wrench and turn it so the side of the head fits in the slot. lefty loosey, and without effort you're done.

I bought an aftermarket one and I love it. Like I said I had the shop take it off by pounding on that sucker with a screwdriver

what am i missing here?? my cap is a normal oil fill cap. there's no slot, it's a raised rib in the center and it turned right off. did yamaha fix this issue for the '08's or something?