CB100 Idling Problem

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chuck
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Joined: Tue May 30, 2006 2:49 pm

CB100 Idling Problem

#1 Unread post by chuck »

I hope I'm posting this in the right forum.

I recently bought a 1972 Honda CB100 starter bike. I've got it running and it sounds great, but it will not idle without constant throttle, even though the choke is open. Is there a way to adjust the idle on this bike? If not, what is the most likely cause?

Thanks

TorontoBoy
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#2 Unread post by TorontoBoy »

This isn't really the right forum for a CB100 question. Other forums such as the http://autos.groups.yahoo.com/group/Lit ... _Classics/ or the http://autos.groups.yahoo.com/group/CB1 ... =105310419 would be better. The CB125 forum is quite good.

You probably need a carb cleaning to flush out the idle circuit. The idle jet is pressed into the carb body so it can't be removed separately, but you can still clean it out with carb cleaner.

I believe there is also an air screw and an idle adjustment. A Clymer's manual is your best bet.

These bike engines are near bullet proof as long as you keep the oil topped up and changed every 2,000km/1,000 mi so keep at it and you'll get her running very smoothly. The CB100 engine is sold throughout the world and is one of Honda's most widely sold engines.

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