SOHC.co.uk Forums > CB350/400
More carb troubles, engine won't return to idle revs
billdn:
Aarrgh! 🙃 thought it was had to screw the bejesus out of adjuster to get slide down . 🤣😉
Bryanj:
In my defence comf's was the first set of 400 i have had where just about every screw possible was undone and i must give thanks to Nurse Julie and Oddjob for helping out with parts and once again appologies for the wrong instructions.
Iwould now suggest that on the 400 wind out the tickover screw, make sure that the choke lever is NOT touching the fast idle cam then starting with all the screw adjusters removed and nuts, links, washers etc removed screw down one adjuster keepin a close eye on the arm the big tickover screw pushes on till it just moves then back off 1/2 to 1 turn(i.e.screw up) then do same to each adjuster in turn.
Now fit washers, links and nuts as removed making sure the adjuster doesnt move as you fit the nut on each one.
Now fit the idle screw and screw in until your tiny drill shank just fits under the engine side of the slide on the slide with biggest gap and adjust the othe slides to that one.
This should give a good starting settup with all slides down.
Cappodimonte:
If you want a really in depth description of Stripping/Rebuilding Carbs which covers everything you need to know, have a look at ‘THE VINTAGE BIKE BUILDER’.
It’s an American site but one of the best I have encountered, having plenty of pictures to back up the written word so you shouldn’t get lost in the information.
Laverdaroo:
Or look at Classic Octane, he takes a set of 400 and 500 carbs to bits and rebuilds them fromscratch. MASSIVE HELP!!!
McCabe-Thiele (Ted):
I used this U-tube video - there is plenty of stuuf out there if you are a first timer like I was.://www.youtube.com/watch?v=JFTOfYl5BSc
.https://www.youtube.com/watch?v=JFTOfYl5BSc
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