new rider

hey guys in a new rider and a new kz owner i just recently got a 83 kz750 twin love the bike especially because it is my first bike it needs some tlc the kick starter leaks a little oil but the old owner said i would need a gasket for it also the start button does not work but i can kick start it i do have a question theres a valve by the gas tank that i do not know what its for if anyone can help to inform me on what it does that would be helpful and im sure im going to have many other questions thanks and look forward from hearing from you guys

Welcome Flex! I do not own this model. Could be a pressure valve for the fuel tank. Your description is a bit vague, specifics please, i.e. valve part of fuel tank or located nearby and connected to what? Others will come along soon enough to help out. Look for Rainman and other KZ750 twin owners to appear. Otherwise, Lurk and PM them with your questions.

Also, pics of your new ride are requested. :whistle:

flexvatos wrote: hey guys in a new rider and a new kz owner i just recently got a 83 kz750 twin love the bike especially because it is my first bike it needs some tlc the kick starter leaks a little oil but the old owner said i would need a gasket for it also the start button does not work but i can kick start it i do have a question theres a valve by the gas tank that i do not know what its for if anyone can help to inform me on what it does that would be helpful and im sure im going to have many other questions thanks and look forward from hearing from you guys

Hello, flexvatos, and WELCOME to KZr!

The mentioned valve may be the petcock which controls the flow of gasoline from inside the fuel tank through a fuel hose routed from the petcock to the carburetors.

The petcock has three positions to which it may be adjusted, being ON (the normal position). REServe (the last half gallon inside the tank), and PRIme (allows constant gasoline flow-through).

In addition to the fuel hose, there should be another smaller vacuum hose connected to the petcock.
The vacuum hose runs from a vacuum nipple on a carb or carb holder.
The vacuum is supplied to the petcock when the engine is running.
The petcock uses the vacuum to allow fuel flow through the petcock in ON position and in RES position.

In PRI position, the petcock allows fuel flow regardless of any vacuum being supplied to the petcock.

Good Fortune!

Thanks guys for the reply and thank you patton it was what you were talking about I looked it up and read all about it

Welcome flexvatos. The clutch lever needs to be pulled in for the starter button to be active. Prevents a bike in gear from starting and taking off. The kick starter requires the trans to be in neutral and the clutch not engaged.

Good Luck,
Jim

and also might have kick stand safty switch
if down and put in gear while running it shut her off