1973 ct70 struggling at higher rpms

A

allenp42

Well-Known Member
Check this out. Set the float height such that the top (lower side that goes into bowl) is at 20mm when just touching the needle valve. Normally, I use a set of calipers and turn the carb at angle when checking this measurment to make sure the weight of the float is not depressing the needle valve. But to answer your question, yes, you bend the tab.

https://lilhonda.com/index.php?threads/ct70-carb-rebuild-town-time.16011/
 
KennyCT

KennyCT

Member
KennyCT

KennyCT

Member
allenp42 said:
Check this out. Set the float height such that the top (lower side that goes into bowl) is at 20mm when just touching the needle valve. Normally, I use a set of calipers and turn the carb at angle when checking this measurment to make sure the weight of the float is not depressing the needle valve. But to answer your question, yes, you bend the tab.

https://lilhonda.com/index.php?threads/ct70-carb-rebuild-town-time.16011/
Click to expand...
I got the carb off, what exactly am I measuring to 20mm?

*edit* I kind of eye balled it and bent the pin downwards a bit. The engine seems to berunning much better now. I'll be sure to update you guys when I start it again tomorrow just to make sure she is running fine still.
 

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KennyCT

KennyCT

Member
Alright, I got it to run much better, so I rode it down the street where it shifted and rode through all the gears fine. Seemed like it was still running a little lean at higher rpms. So I thought I would adjust the jet to make it a little richer. I ended up losing the c clip so I am currently using a thin 32 gauge wire wrapped around the jet in its place. But the problem now is, it wont even start. Ive tried adjusting the jet back to where it was before, and I can only get it to pop. Where could I also buy a new c clip for the jet? Im hoping thats the issue since the wire may be giving the jet some play, causing it not to run.
 
cjpayne

cjpayne

Well-Known Member
I remember loosing mine one time. I actually found a set of those in different sizes at my local autoparts store. All I had to do was put one on that fit the closest and barely pinch it with some pliers.

When your setting those floats, (with the carb upside down) measure 20mm from the gasket base of the carb to the top of the floats with the tab BARELY kissing the float inlet needle. Remember that this is just the base setting for the carb and it may need a tad more adjustment. I have found that adjusting the floats to where you want them, can cause the A/F screw to be out of adjustment and need dialed in, but not always the case.
 
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