1991 crb1000f 40000 miles, carbs where cleaned ,new plugs, ect startes right up with the choke, close the choke it dies. took it for a 150 mile ride and it runs very strong, until i come to a stop then i need to pull the choke lever on to get it to keep running. i figure it needs to have the idle set up a little. so how do u set the idle if the bike dies with choke off do u set the choke to keep it running then adjust the idle screw and repeat while lowering the choke any help would be helpful thanks dennis

 

there should be a idle adjustment on the left side of the bike that can be accessed by removing the side cover. start the bike with the choke on and turn the idle set till the idle is raised to about 3000 - 4000 rpm. This sounds high when the bike is just sitting still but is normal crusing rpm for the engine so it won't hurt anything. let off the choke and then adjust the idle down to an acceptable level

 

If your bike wont idle with choke off at about 900 rpm then there is something wrong - and truning up the idle is just going to mask it - not fix it.

Aaprt from the fact that if you are caught in traffic you will have overheating problems setting your idle as high as 3000 - 4000 rpm is simply dangerous - when you close your throttle you need the revs to drop sharpish for good engine breaking.
If it only closes to 3k-4k then you will be out of control. (Please dont do it)


I had a simliar problen to this and it turned out to be a faulty CDI - pulling the choke out would take the revs up to a point where the intermeittant misfire was not enough to stall the bike

 

Oh also - putting your bike from Nuetral into first with revs that high will give you a huge clunk - if it goes in at all

:-D

 

Harry T, I think Tobiah was saying 3-4ooo with the choke ON, then dump the choke and adjust.............

 

ooops my bad - never read it properly -

Apologies to tobiahr !