Topic: Carb Sync Tool - 5 MM or 6 MM Brass Tubes??

[b52bombardier1]

Hello,

  I have not done a carb sync on my 72 CB500 bike and I'm finally getting around to buying the sync tool.  But do my carbs need the 5 millimeter brass tubes or the 6 millimeter type to connect the synchronizers? 

  The search function does not work here and the Carb FAQ makes no mention either way.  And the downloadable shop manual doesn't even have a section within the carb area about synchronization. So rather than guess and possibly waste a few bucks plus the time, somebody around here will know the answer.

Many thanks,

Rick

[70CB750]

Take out the screw and measure it.  750 has M5 tubes, yours probably too.

[b52bombardier1]

I'm an idiot.  I have one of those nut / bolt thread size and pitch things in my garage for metric and English nuts and bolts.  I will use it to answer this question and thank you for reminding me . . .

Rick

[b52bombardier1]

And a drum roll please, maestro . . . as you predicted . . . it's M5 x .8.  Thank you very much and I can now order the correct tubes.  Now if I only had a brain . . . . ?

Rick

[Thekramer666]

Future reference
I just looked up the screw u take out and then I knew
Honda cycle schematics
http://www.cmsnl.com

[b52bombardier1]

Ah yes, another excellent reference. Thank you.  It's been a long week . . .

Rick

[70CB750]

I'm an idiot.  I have one of those nut / bolt thread size and pitch things in my garage for metric and English nuts and bolts.  I will use it to answer this question and thank you for reminding me . . .

Rick

Everybody has senior moments:)

[b52bombardier1]

I wish I was 30.   I'm as old as my tongue and a little older than my teeth . . . . 57.

Rick