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New (to me!) '77 CB400F - US model
mattsz:
--- Quote from: taysidedragon on March 25, 2020, 11:40:35 PM ---It did an excited wee because it was going home. 😂
--- End quote ---
It was better off where it was - now it's relegated to a corner of an unheated garage. But at least it will get some attention...
mattsz:
I have a question regarding the individual choke plate adjustments. There's some lash in the system, so when the choke is in the closed (for cold starts) position, the #1 plate is completely closed, and each successive plate remains a little more open than the last. When I open the choke fully (running position), each plate is mostly open, but a little less than its neighbor to the left. This is how they came to me (click on photo to zoom in):
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I've been messing with the adjustments - I can't seem to get all the plates to be open and closed the same amount. Is it better to set them so they all close perfectly together, but end up in slightly different positions when open (per above photo)? Or better to set them so they all open exactly the same amount, but don't all quite completely close with choke?
taysidedragon:
I'm no carburation expert, but I would set them all equal when fully open. That's where they run for most of the time, choke only on for a short time.
Where is the lash in the system, strange they are not moving together?
mattsz:
--- Quote from: taysidedragon on April 13, 2020, 07:02:17 PM ---I'm no carburation expert, but I would set them all equal when fully open. That's where they run for most of the time, choke only on for a short time.
--- End quote ---
Thanks! I was thinking the same...
--- Quote ---Where is the lash in the system, strange they are not moving together?
--- End quote ---
I'll show you, let me get a photo...
Laverda Dave:
Mine are the same on both 400/4's. The lash or lack of adjustment appears to be in the choke linkage assembly on each carb (the flat blade screw with the locknut). If you get no.1 carb choke closed you loose a bit on no. 2 and it subsequently gets worse on no.3 and no.4. Your 4th carb looks particularly bad though, do you have any adjustment left?
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