carb question

I picked up a 78 750b3 from a guy that had no idea what he was doing... lots of things hooked up wrong. My question is; should the nipples on the rubber boots going from the motor to the carbs be connected to eachother or capped.

78kztwin wrote:

I picked up a 78 750b3 from a guy that had no idea what he was doing... lots of things hooked up wrong. My question is; should the nipples on the rubber boots going from the motor to the carbs be connected to eachother or capped.

On KZ750 twins, kawasaki.com shows a "balance tube" connecting the two nipples.
Am uncertain how much "balancing" they actually accomplish when connected together.
But neither nipple should be left exposed to open air.

With four cylinder foursome carbs, vacuum nipples should be capped (plugged) unless being used to supply vacuum for another component such as a vacuum operated petcock for example.

Good Fortune!

plugged, those ports are for hooking up a set of vac.gauges to sinc.the carbs when adjusting them. if you have a vac operated pet cock then only one is needed to make the petcock work.

[Click on image to enlarge view.]

If needed, here's a link about getting info on kawasaki.com such as parts diagrams, part numbers, models sharing same part, availability, etc.

kzrider.com/index.php?option=com_kunena&...w&catid=13&id=376734

Good Fortune!