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so while cleaning the bike the other day i could still smell stale fuel coming from it. I had previously found fuel was running down the centre of the tank when the cap leaked and running under the seat.
So i had a look around and noticed that fuel was pooled in the black rubber strip that runs around the edge of the tank seam. I cut it back leaving the front edge so the cables dont wear near the steering stem, i figure its just a moisture trap and will help stop rust forming under the strip
I also fitted a thin leather washer to the fuel cap on top of the rubber one, it should help stop it leaking, but i wont know untill i fill the tank up and try the brakes real hard.
yeah, i had considered getting a second cap and taking the rubber gasket off one and putting it on the other one as well. so its thicker, my fix was to put a leather one on as well, and it seems to haveslowed it down a lot. i didnt get any spill on a normal highspeed ride with a full tank last weekend, so it seems to have helped.
I also had the trouble with leaking fuel cap from the very first day I got the ace. Bending the cap helped for a time but recently the rubber was completely worn.
I replaced it with a genuine honda gasket (part 17632-176-771).
It fits perfectly and so far it's not leaking at all (and now I can fill the tank completly).
So it's worth the few dollars.
I have just spent the $9 and and bought the Honda part that Allan mentioned. It is off a Z50 honda. It is the same diameter as the Ace. Made of thicker rubber.
cool that the honda ones fit.
i spent nothing and cut my own and it works a treat, has leaked since
and besides there is something cool about using an handmade leather gasket on the ACE, i think it fits with the old vibe of the bike.
lol
I also had the trouble with leaking fuel cap from the very first day I got the ace. Bending the cap helped for a time but recently the rubber was completely worn.
I replaced it with a genuine honda gasket (part 17632-176-771).
It fits perfectly and so far it's not leaking at all (and now I can fill the tank completly).
So it's worth the few dollars.
Didn't work for me- Honda gasket is a lot thicker and can't install the cap with it on. I wonder if it worked for you because you previously bent the tangs? (I don't want to do that) I'll have to reconsider what to do here.
Mine leaked the first time I filled tank to top (ruined tank decals).
I now don't fill tank completely as it returns a good MPG,
Also worth saying that I use super unleaded petrol. It does cost a bit more but not really noticeable for the amount bought and the Ace runs better for it.
My Honda gasket first didn't fit. I used my sanding machine to make it a little bit thinner on both sides. Be careful not to sand for too long. The heat deforms the gasket a bit but it shrinks to normal size when it cools down. I never had leaking fuel again.
I got it to fit by turning it inside out and cutting the 'teeth' or serrations off with a razor blade. Haven't ridden it since so I don't know if it doesn't leak.
Second post today (time on my hands), Well I was messing with other bikes I have and tried the fuel cap off my Honda CM200. Not only does it fit and has stopped the leak when I have nearly a full tank or braking hard, but it also looks like it's from correct period.
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