Question about 1992 kawasaki Zephyr 750

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On a kawasaki zephyr 750 set of carbs, where do the two hoses that come from between carbs one and two and three and four go( not the vacuum hoses, or fuel hose. Are these the heater hoses?

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Hi, the hoses you refer to go back and hang over the top sides of the air box, the 750 zephyr doesnt have fuel overflow, if the carbs do overflow the petrol ends up in the airbox. it will only happen if the carb float valves stick, had the carbs off 4 times on mine to sort it out!

Posted on Sep 05, 2010

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They are fuel overflow hoses, and just hang down under the engine. If they are not vacume or fuel lines, then they must be the overflow pipes, one from each carby.

Posted on Aug 26, 2010


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Need help with 1991 Zephyr 750. having major issues with taking way to long to come back down to an idle. It seems like its being choked down somehow. what are the jet settings, turns out, etc.. I can...

sounds a bit like its s ucking air, the vac line opens the fuel valve, so I assume you disconect the line and hold your finger over it, and it runs until it gets low on fuel in the carbs.
Maybe the vac hose is leaking on its connection or has a hole, or the diaphram in the fuel tap is gone.

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Usually there is a hose that connects to both number 2&3 cylinders at the front of the carbies.These two hoses commonly join together with a tee connector & a single hose comes off this tee. leaving this hose dissconnected allows the engine to **** air.This air is being drawn directly into the engine-making the mixture incorrect(too lean),as this air has not had fuel mixed with it.Therefore it needs to be re-connected to its original position(or at least pluged).
Generaly-Here in Australia- this hose connects to the fuel tap to a small spigot at the rear.
This type of fuel tap only allows fuel to flow to the carbies when there is vacume applied to the tap by that hose.This is to help stop the chance of the bike flooding.
Check this link
see the o ring marked part 670- see the part to the right with no number-it has a little spigot on the bottom- Your hose goes there.

Hope this helps
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