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Carb Question
On my 85 Asp. changed out one of four spring/diaphram/needle valve covers on the carb. (not sure of correct descrip.) with a chrome cover. When re-installing everything went back together but not sure if diaphram properly set in groove. Bike seems to run fine but was the first time I drove it. Question is, would putting a very thin spot of grease in the groove to hold diaphram lip until cover applied cause a problem.
#1 04-19-2007, 11:22 AM,
Silicone grease no problem for sure but some other petroleum greases could cause swelling of the diaphram.
Ed (Vic) Belanger - 1954-2015
Founder of

#2 04-19-2007, 02:10 PM,
Thanks again for the info.
#3 04-19-2007, 02:46 PM,
I've heard petroleum(sp) jelly is good to use? Or would that cause swelling as well?
What silicone grease is good to use?
#4 07-30-2009, 04:39 AM,
Go to a hardware store and get plumbers silicone grease, it's the best deal.
Ed (Vic) Belanger - 1954-2015
Founder of

#5 07-30-2009, 11:26 AM,
Can you use rtv gasket sealant if you're still having a possible vacuum problem off the caps? The diaphrams look fine just not sure if they're sealing.
#6 08-03-2009, 04:49 PM,
You can use RTV silicone but I don't recomend it because you might damage the diaphragms the next time you tear them apart. Use tiny drops of Krazy glue around the outside perimeter instead.
Ed (Vic) Belanger - 1954-2015
Founder of

#7 08-03-2009, 05:41 PM,
Make sure you have the little notch on the underside of the covers in the right position on the carbs... The chrome covers I bought for my bike were total crap and I ended up just polishing the originals... They came out looking better than the chrome ones and they work a bunch better too...
Ed Zogg
#8 08-05-2009, 10:06 AM,

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