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H1E Carb Top Cap Rubber Seal
Posted: Wed Dec 17, 2025 4:27 pm
by Nige S
Hello Everyone,
Does anyone happen to know where I can get some top seals for my H1E carburettors. The seal I mean is the thin one with the notch cut out that fits inside the top screw cap. All I can find is complete carb overhaul kits which is a bit much as I only need the rubbers.
Thanks for any info on that.
Nige S
Re: H1E Carb Top Cap Rubber Seal
Posted: Wed Dec 17, 2025 5:08 pm
by Charlie Morriss
I'm not completely sure if you mean the rubber cap covering the idle speed adjuster, but if you do then a set of 3 are available from KawaTripleParts for £30.
Re: H1E Carb Top Cap Rubber Seal
Posted: Wed Dec 17, 2025 5:44 pm
by Nige S
Hi Charlie,
I mean the rubber that fits inside the top cap, if that makes sense.
Cheers
Nige S
Re: H1E Carb Top Cap Rubber Seal
Posted: Wed Dec 17, 2025 7:55 pm
by Charlie Morriss
Nige, 'cos I'm old and dumb it's best to make sure we're talking about exactly the same item! See attachments (I hope!)
Re: H1E Carb Top Cap Rubber Seal
Posted: Wed Dec 17, 2025 9:26 pm
by g6mow
I think he means this rubber.
Re: H1E Carb Top Cap Rubber Seal
Posted: Thu Dec 18, 2025 3:12 pm
by Charlie Morriss
So I wus wrong then - nuffink new! And not listed in the parts list either - as far as I can tell anyway.
Re: H1E Carb Top Cap Rubber Seal
Posted: Thu Dec 18, 2025 6:13 pm
by Nige S
Charlie,
Yes the part you circled is the one. Not finding those parts by themselves unfortunately.
Nige S
Re: H1E Carb Top Cap Rubber Seal
Posted: Fri Dec 19, 2025 3:56 pm
by malc87
I might have some ?
Flying back from the Isle of Man in an hour so will check tomoz
Re: H1E Carb Top Cap Rubber Seal
Posted: Sat Dec 20, 2025 2:32 pm
by Nige S
Malc,
Thanks for looking.
Nige S
Re: H1E Carb Top Cap Rubber Seal
Posted: Sun Dec 21, 2025 6:36 am
by johnnymoped
Hi Nigel - if Malc can't - pretty sure I can

Re: H1E Carb Top Cap Rubber Seal
Posted: Sun Dec 21, 2025 6:00 pm
by malc87
I’ve got 2
One is plastic and the other is rubber

Re: H1E Carb Top Cap Rubber Seal
Posted: Mon Dec 22, 2025 2:06 pm
by Triple Parts
I don't fit them, they are just a pain in the arse and don''t do anything useful in my experience.
Re: H1E Carb Top Cap Rubber Seal
Posted: Wed Dec 31, 2025 1:19 pm
by Nige S
Malc,
The rubber one would be great, apologies for the slow response.
Nige S