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Vacuum Break Diaphram?

T

t78

Guest
Hi everyone,

What does the vacuum break diaphram do? (I also think it is called the choke pull-off valve). I'm talking about the part right above the choke coil on a stock Qjet. (passenger side)

I've had a hard time getting mine to run below 1200 RPM, and I just determined that this part was bad. (It would not hold a vacuum at all). So I replaced it tonight, along with a new Vacuum Advance Unit.

I didn't get a chance tonight to see if the new parts helped (Because... of course... the battery was dead...), but I was wondering what exactly the vacuum break does. It looks like it just connects to the side of the secondaries and pumps back and forth...

Thank you,

t78
 
vaccume brake

if i remember correctly, when you get on it and the choke is on, this will allow the choke to pull off and away you go. i may be wrong. but then again, i may be right.

mike

BSS
 

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