TOPIC:

So I have pulled the carbs off my bike, the throttle cable is still attached. Where do I remove it at, is it both these nuts in the pic? I realise it's a noob question ...

Also does anyone have a rebuild kit they can recommend or will any do?

originalhandy wrote: So I have pulled the carbs off my bike, the throttle cable is still attached. Where do I remove it at, is it both these nuts in the pic? I realise it's a noob question ...

Also does anyone have a rebuild kit they can recommend or will any do?

Loosen them don't remove them and then remove the cable end piece from where it's held in place

I've recently rebuilt two sets of those Keihin carbs. They are not overly difficult to rebuild but there are a few tricks. More specifically, the carbs are grouped together into two pairs, connected by the choke butterfly shafts. To properly clean and replace all the carb O-rings (which I strongly suggest), you need to ungang the carbs and that means removing the choke butterfly valve on at least two of the carbs.

Z1 Enterprises sells the various O-rings you will need including those for the: floatbowls, pilot screws, drain screws, and the fuel transfer tubes. I advise against changing the jets, just remove and clean the ones you have. You have to be careful to use screwdrivers that fit the slot of the jets otherwise you can damage the parts. One other thing you may want to consider changing are the float needles if yours are in poor condition.

Good luck and let me know if you have any specific questions about the cleaning process.

Nessim,

When you removed the choke butterflys and shafts, could you see what kind of seal seals the choke shaft to the carb body?

undiablo wrote: Nessim,

When you removed the choke butterflys and shafts, could you see what kind of seal seals the choke shaft to the carb body?

There are NO shaft seals. Nothing, on either the throttle shafts or the choke shafts. I was surprised.

Really? Well that is something new to me. I was afraid of hurting the "seals" so I never removed them.
Thanks for sharing.

Of concern to me when messing with the butterfly valve screws is making sure they don't come back out and get sucked into the engine. The screws themselves have a hollow tip and you are supposed to upset the end and mushroom them. Well, lacking the tool I used red locktite instead. You can still get them out if necessary but some decent retaining power at least.

Nessism wrote: I've recently rebuilt two sets of those Keihin carbs. They are not overly difficult to rebuild but there are a few tricks. More specifically, the carbs are grouped together into two pairs, connected by the choke butterfly shafts. To properly clean and replace all the carb O-rings (which I strongly suggest), you need to ungang the carbs and that means removing the choke butterfly valve on at least two of the carbs.

Z1 Enterprises sells the various O-rings you will need including those for the: floatbowls, pilot screws, drain screws, and the fuel transfer tubes. I advise against changing the jets, just remove and clean the ones you have. You have to be careful to use screwdrivers that fit the slot of the jets otherwise you can damage the parts. One other thing you may want to consider changing are the float needles if yours are in poor condition.

Good luck and let me know if you have any specific questions about the cleaning process.

+1 on the float needles