I have a CB 400 SF (F2N/F2R/F2S/F2T) Superfour (Japan) and one of its diaphram has some tiny pin holes resulting in less vacuum. I found some spares however they are quite expensive. Would some one know if the diaphram from a CBR 600 F3 (1995) would match? On picture they are quite similar.
have a look at NRP Carbs.co.uk.(do not know how to post links!)
Bertu - they're all similar on picture because they all do pretty much the same thing, but it'd be hard to tell if they're interchangeable, even with two in your hand.
NRP are pretty helpful.
I've confirmed that although they are similar in shape those for the CBR600 are larger than the ones needed for the CB400. I will check NRP as you suggested.
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