SOHC.co.uk Forums > CB350/400
More carb troubles, engine won't return to idle revs
McCabe-Thiele (Ted):
I'm trying to remember but I think one of the adjusters is quite critical if you overtighten it - I think it's the one in the slider itself. Mine was marked with yellow paint.
billdn:
Don't recall reading that Ted isn't that on the 500 or 550, hope so as all mine have yellow paint on 🤣
McCabe-Thiele (Ted):
--- Quote from: billdn on October 26, 2022, 09:56:06 AM ---Don't recall reading that Ted isn't that on the 500 or 550, hope so as all mine have yellow paint on 🤣
--- End quote ---
I did my best to return all the lock nuts to their original position on my 400 carb rebuild. I seem to recall that on one slider all the paint fell off so I had to fiddle with it a tad to make it return freely.
All 4 of my carb sliders were stuck solid. It took me several days of soaking the carbs in Petrol & other solvents before I freed them off.
It was a slow process as there was nowhere I could safely lever against to free them off.
It's anecdotal experience not anything I read. Looking at my post it reads as though it's down to one adjuster - bad phrasing - I meant the slider ones seem more critical than the external ones imho.
Oddjob:
Were all the little black rods fitted Bill, they slide inside the springs and are cupped on the ends to match the ball on the lifter arm. If those are missing the spring pressure would be reduced and allow it to remain raised.
There should be 3 in each lifter arm fitting.
https://images.cmsnl.com/img/partslists/honda-cb400f-england-engine-group-1j-1k-2j-2k_bigma000080e01-4_c702.gif
You can see them in number 96 grouping.
billdn:
Yep they're all there but one T cup bit in lower end of riser ( one on which brass cap fits) doesn't want to come out and didn't during strip down .
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