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Mechanics 101 Can't get it to run right? Find a trick to add HP?
From the first oil change to completely rebuilding the engine,
this is the place to talk about the heart of the beast!


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Old 11-15-2017, 02:49 AM   #1
doppiaeffe
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Default infamous diaphram

i'm rebuilding the carburetors of my 1988 katana 600 (gn72a) and i cannot find just the diapghram, can anyone knows where i can ?thanks
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Old 11-15-2017, 08:56 AM   #2
ygolohcysp
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Hello,

I see your location is Sicily, so I would guess that your English is much better than my Italian. The word you're looking for is diaphragm.

I tried looking at bikebandit.com, and only found the assembly for a lot of money.

I did find just the diaphragms by searching ebay for "1988 katana carb diaphragm".

Just one result:
http://www.ebay.com/itm/Carburetor-C...!US!-1&vxp=mtr
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Old 11-20-2017, 04:12 AM   #3
doppiaeffe
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they looks similar but not the same, the first katana 600 (gn72a) have a different carb from the followings series.

maybe i've found somethingh similar and i will make some reserch about
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Old 11-25-2017, 12:26 PM   #4
doppiaeffe
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for future notice:

gn72a katana 600 use the mikuni bst31ss, the worst carb ever used. you cannot change just the rubber but you need to change even the metal slider. it cost a lot of money (average price 200$ each) but i find in germany a kit for 80$ each.

i think i may swap this carb to the gn72b ones, any ideas about?


still sorry for my english
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