Pilot Screw Adjustment Procedure for Rough Idle
 

Hi again guys.

I am now confident I have a set of really clean carbs that are perfectly synched with a Morgan Carbtune.

I have installed a brand new set of pilot adjustment screws and set them to the default 3 turns out as described in section 5-14 of the service manual.

I still have the bike idling quite roughly similar to toecutter2503 post
https://cbrforum.com/forum/cbr-1000f...-108655/page2/

The bike sounds like his youtube video
I do not have a tacho to pick up the +- 50 RPM in the pilot screw adjustment procedure.

Any ideas on an alternative method of achieving the adjustment. The bike seems to be running quite rich. I have seen some posts about adjusting each pilot screw until the bike starts to labour but as it is running quite rough anyhow it is hard to tell.

Thanks

By the way my bike is a 1997 (SC24) so I don't know if the default setting is still 3 turns out?

Most guys advise 2.5 turns out.

2 & 1/2 is the norm like Hawkwind just stated - even a hair less in cooler higher
elevations. Hope you put new orings in with each needle

Yes sure did. Honda UK sell the needle, o-ring, spring and washer as a single item. £15 of my hard earned because they refuse to sell the o-ring separately!!

I've tried 2.5 out and certainly the exhaust seems less 'fuely' and idling bit more stable. I'm going to post a video of what the bike sounds like to see what you guys think. Maybe I am being over critical of a 15yr old bike!!

Idle should be 1,200 rpm. Sounds a little low.
From the video, it sounds like a slight rattle form sync being out slightly.

It should be smoother.