How to Tell if Emission Controlled or Non-Controlled

Hey guys, 

I want to adjust the pilot screws on my 1978 LTD, but my manual gives different directions based on if the bike is 1977-1978 non-emission controlled or 1978 emission controlled. It says emission controlled bike were made after January 1st 1978. How can I find out when my bike was manufactured?

Emissions standards were evolving year over year back in those days.  I'd ignore the factory settings, and adjust for best running in modern times, using modern gasoline. 

 

The date of manufacture is printed on a white label on the steering head part of the frame.

Emission refers to the implementation of the Air Switch Valve and different cam covers. Also using "pumper" type carbs. They used this system starting in the 1979 KZ1000 model. KZ650 and 750 also adopted this air exhaust induction system too. The Production 1978 KZ1000 didn't really have any of this.

with Kawasaki clean air system. extra cap covers on the valve cover with tubing connected to air suction valves. and other tubing to airbox and carburetors or carb holders.

without Kawasaki CAS. airbox >> www.partzilla.com/catalog/kawasaki/motor...-cleaner-77-78-b1-b2
and the valve cover >>  www.partzilla.com/catalog/kawasaki/motor...ad-cover-77-78-b1-b2

with Kawasaki CAS. airbox  >>  www.partzilla.com/catalog/kawasaki/motor...-cleaner-79-80-b3-b4
and the valve cover >>  www.partzilla.com/catalog/kawasaki/motor...ad-cover-79-80-b3-b4