SOHC.co.uk Forums > CB350/400
High revving idle
billdn:
--- Quote from: Nurse Julie on September 12, 2022, 05:10:43 PM ---Well done for getting her back on the road Bill. It does sound like a bench sync is needed.
--- End quote ---
Thanks Julie,
I did follow Bryanj's method as well and your flot setting method too- so must be one of your two's fault, as I never do anything wrong 😇🤣😂
billdn:
Okay so carbs off ..again! To attempt bench sync a la Bryanj method, what could be easier 🤔. So found lowest slider and adjusted gap for drill bit, using 1.5mm bit. But when trying to use separate adjusters for other carbs there is no further adjustment available to achieve same gap? Have I missed something when reassembled carbs after cleaning?
K2-K6:
Start by screwing the main adjuster for carb rack tickover inward to lift all slides before anything else.
Then set the slides.
You've got to be able to lower that tickover adjuster after synchronisation to drop all slides back downward that drill size (1.5mm ?) before you can run them.
You need AT LEAST the 1.5mm lift for that first step in the screw range, plus some more to make sure you don't run out of thread when in use on that screw.
Bryan described it well, but follow the instructions to the absolute letter else important bits will be missed.
Sesman:
Unscrew the main idle adjuster until it no longer touches the adjuster stop. Pick a carb, any carb, and adjust the slide adjuster until the slide bottoms out. Lock it off. Now use the main idle adjuster to lift that slider until you achieve a sliding fit. Now use the slide adjusters on the remaining slides to get the sliding fit without touching the main adjuster screw, you are good to go. You are approaching the slides from the engine side and not the airbox side?
billdn:
I wasn't knocking Bryan's method, it's just I felt like I was doing something wrong, I'll give a good read and tackle it in the morning, when I'm less inclined to fling it across the workshop.
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