Pilot screws CV36

How many turns out is the pilot screw supposed to be set at? The bike is a 1982 KZ440 Ltd D4 w/ CV36 carburetors.
Thanks

There is a default setting that I'm not certain of. You can start at 1 1/2 turns out to begin tuning.

If the float heights are set properly and everything is clean, the # of turns should be very close.

With the bike good and hot, and carbs synced properly. Turn ALL THE PILOT SCREWS either in or out 1/2 turn and listen to the idle. The idle should noticably rise or fall. continue turning if the idle rises, turn the other way if it falls.

The idea is to find the spot at which the idle is highest.

Then, turn each one individually 1/4 turn either in or out and listen. Try to find the spot at which the idle is highest again. They should be very close, and if no audible change is detected at this point, your done!

Good luck!



Let us know haow it goes, or if you run into any more probs.

I've just finished cleaning my carbs today and I've found that it's hard to tell when you've bottom out the pilot screws, as you don't want to damage them. I ended up cleaning the threads, using a little Sil-Glyde lube on them and the o-ring, and screwing them in a few times without the spring to see how many turns until you bottom out (and can you can faintly see the tip from inside the carb). For my BS34s it's 17 turn in pretty much exactly until they bottom out; then I marked the slot direction in permanent marker on the outside of each hole for each screw (so I can easily go 1/4 turn in/out later on). I put the spring back on and go 17 turns in to about where it bottoms without having to actually crank on it to hit the bottom, then my book says back 1 1/4 turns. Once I get the carbs back on and the bike running, I can tweak them per TeK9iNe's suggestion.

Thanks for the help. Unfortunately, I don't have much spare time to mess with the bike right now, but I do have another question pertaining to the pilot screw. When turning the screw out (counterclockwise) is this leaning the mixture or is it the other way around?

Everything I've read, and in looking at the carb schematic indicates the pilot screw controls fuel flow, so turning it in, closes off fuel flow making the mixture more lean. To richen it, turn the pilot screw out.

A good rule of thumb on carbs is if the screw is on the front it is for gas. If it is near the rear it is for air.

Does this rule apply on these carbs? Roy