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Author Topic: CB550 1977 carbs ?  (Read 829 times)

Offline mart

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CB550 1977 carbs ?
« on: June 14, 2026, 07:28:56 PM »
 Would any one no the correct needle clip position for the CB550 1977 carburettors  they are stamped 069A  .
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Offline Johnwebley

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Re: CB550 1977 carbs ?
« Reply #1 on: June 14, 2026, 07:35:50 PM »
The normal clip setting is in the middle

I assume the bike hasn't been run for a while

I suggest you check all the basic details

Tappets
Plugs
Points and timings

Condition of the air filter

They are time consuming, but gives a good starting point



Sent from my SM-A546E using Tapatalk

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lifelong motorcycle rider,and fan

Offline Bryanj

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Re: CB550 1977 carbs ?
« Reply #2 on: June 14, 2026, 07:53:12 PM »
Middle position assuming all original brassware
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Offline DomP

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Re: CB550 1977 carbs ?
« Reply #3 on: June 14, 2026, 10:03:13 PM »
069a are fitted to F models so are one clip from top of needle
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1975 XS650B
1976 CB550F1 current project
2012 Triumph Daytona 675

Offline deltarider

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Re: CB550 1977 carbs ?
« Reply #4 on: June 15, 2026, 08:04:44 AM »
Check this. Second from top, NOT tip!
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Offline Sesman

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Re: CB550 1977 carbs ?
« Reply #5 on: June 15, 2026, 02:22:50 PM »
This is correct. Mine are set at position 2 and work just fine.
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Offline DomP

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Re: CB550 1977 carbs ?
« Reply #6 on: June 15, 2026, 08:16:38 PM »
Ive actually moved mine to the top (last position) in an attempt to solve the rich running i have
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1975 XS650B
1976 CB550F1 current project
2012 Triumph Daytona 675
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