SOHC.co.uk Forums > CB350/400
High revving idle
Sesman:
Disconnect the cables, unscrew the idle screw until it doesn’t touch and manually flip the throttle arm. If the arm snaps back freely the intial set up is the problem. Make sure those idle jets and carb drillings are completely clear too.
andut:
Check the choke lever’s fast idle adjustment also. I had a similar experience on the shake down of my 400 and I hadn’t tightened the lock nut on the fast idle setting.
billdn:
--- Quote from: TrickyMicky on September 12, 2022, 06:45:50 PM ---I agree with Oddjob, before diving in deep with all the strip down malarky, look at the simp-le stuff first. The push pull cables do take a couple of minutes to set up, plus check that they are routed correctly especially round the headstock and right fork, and check engine reaction when turning the bars from lock to lock.
--- End quote ---
Good idea, with cables disconnected, sliders snap back closed easily but just can't get cable routing right. Don't suppose anyone has pic of routes for theirs - I've seen the diagram but to be honest it's not that clear. Do they run through headlight bracket or behind it, note to self ALWAYS take more pics of everything before you start!
Sesman:
If the sliders snap back with cable disconnected, try starting the bike. If the high idle is still present with the tickover over screw fully out, you need to remove the carbs and check the throttle slider heights. The procedure is very straight forward.
Sesman:
Try this.
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