Author Topic: 069A Carb Adjustment  (Read 975 times)

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Offline SAEmiles

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069A Carb Adjustment
« on: April 22, 2011, 06:36:31 AM »
I know this topic has been covered extensively, and I feel like I've read all the tricks, but I still have my doubts on the correctness.

I have a 77 Cb550F with the stock carbs, and I'm trying to adjust the float bowls to the specified 22mm.

I have made a float adjust tool out of a gift card to make sure I can measure the distance accurately.

Before making any adjustments I checked the distance that the floats were currently set at, and I was surprised that they were all set to about 30mm. This is a far cry from the 22mm that they are intended to be set at, and yet the bike seemed to run reasonably well for being starved of fuel with that float setting.

The problem I'm having is that when I set the distance from the bottom of the float to the mating surface of the carb bowl, if I try to actuate the float to full compression of the needle it contacts the wall of the carb.

As you can see i the last to pictures, the tang is almost even with the cross support on the float
« Last Edit: April 22, 2011, 06:38:18 AM by SAEmiles »

Offline SAEmiles

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Re: 069A Carb Adjustment
« Reply #1 on: April 22, 2011, 06:56:51 PM »
I went ahead and put the carbs back on the bike to see if they would leak.  Two leak, while two are fine. I'm going to take them back off tonight and make sure the fuel needle is not marred on the leaky carbs

Offline SAEmiles

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Re: 069A Carb Adjustment
« Reply #2 on: April 24, 2011, 09:44:49 AM »
Well the carbs seem fine, but now the back tire is flat. Just took it off and I'l, be taking it somewhere Monday