SOHC.co.uk Forums > CB350/400

Before I took it apart.....

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Bryanj:
Never ever put vac gauges on a crate bike, only drained oil, refilled and filled/charged battery. Everything mechanical checked at 1st service but never carbs. In all honesty never had to adjust carbs if the rest of the srvice work was done first UNLESS the "owner" had been playing

Woodside:
it would be very interesting to know how they were set up at the factory then..

Nurse Julie:
I think we discussed this on another thread in the past. I think they were bench synced at the factory, in this case the Keihin factory and then marked with dabs of yellow paint and fitted to the bikes at the Honda factory, without any further adjustments as the paint dabs are still intact. I have seen a set of Honda four NOS carbs with the paint on, they were then fitted to a bike and it fired up 1st push if the button without any further adjustment.

kevski:

--- Quote from: Woodside on February 11, 2018, 08:40:56 AM ---it would be very interesting to know how they were set up at the factory then..

--- End quote ---
Chances are they would have been put on a machine with a vacuum and adjusted, then sent to Honda.

K2-K6:
It would be relatively easy as sub-assembly in Keihin factory to set them, stuck on a manifold with one vac supply you'd also have near enough absolute parity to make it accurate.

It's the sort of thing they developed in many of their industries to deliver more complex sub-systems straight to production line assembly ready to go.

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