When I go from max RPM in 3 or 4 to a complete stop as fast as possible, my Z seems to stall. I'm squeezing the clutch in completely & I've adjusted the clutch cable to ensure it's fully disengaged.

Any clues or tips on how I can diagnose the source of the problem?

I have a stupid theory that the starter gear flops down and is causing the problem, but that's just because it seems to make the same noise as when the starter is engaged.

HELP!

 

Don't stop dramatically after red lining, like the Doc says, if it hurts to raise your arm and turn it, don't do that then. Actually, I've had cars that would do the same darn thing, torqued me off every time too cause I look like a doofus who stalled his ride. Sounds like a carb issue, but I am no mechanic. Good luck.

 

do you have a hard time starting it after it stalls? did you check your tank and see if it's close to empty? it's either a carb problem or since your hauling a$$ and coming to a complete stop, if your low on fuel, the fuel will slosh around and not get picked up.

 

I was riding counter-clock wise on a small round dirt course and after a couple of laps around my Z stalled. Checked the tank and it was less than a gallon of gas left. Wouldn't restart until I switched to reserve. I guess that it uncovers the fuel pickup point. I doubt that your stalling comes from that but maybe try putting it on reserve to see if you that helps.
If so that would eliminate fuel pickup as a problem. There should be enough fuel in the carb bowl to get you by under a brief hard braking situation I would think. Mine stalls too under extreme braking but it's usually my fault for not pulling in the clutch fast enough, dum-dum rider error on my part. Let us all know what fixes your problem.

 

If you are running too rich and come off of full-throttle to nothing you could be flooding out the motor.

 

I am having the same problem, except mine also does it in second. I havent found a way to resolver it yet. im kinda wonderin about the vacuum (sp) operated fule petcock. Just an idea

 

Check your float level guys. May need to lower it a little. 1 mm can make a big difference. Be careful though, lowering the float will make it run leaner. My sandrail is real sensitive to float level and fuel pressure when I run it off-road. The fuel sloshing around can spill over and float out a cylinder.

 

i say that its runnin rich. when you go from full throttle and pull in the clutch and the engine slows quickly, it cuts off your air dramaticly and more fuel flows than air the it floods. try to let the throttle down slowly. it might solve your problem.

 

In front of the bowl under the carb is a screw it is the idle mixture screw. It sounds like you are going lean when you shut off the throttle. Turn it in all the way gently do not bottom to hard and count the turns then back out that amount plus 1/8 turn then try you should never have to go out more than 1 1/2 turns from full in. If you do got to a larger pilot.

 

I found the problem.

There is a tube that is curved 90 degrees that routes the choke cable. The tube popped out of the rubber seal thingy (that is between the tube and the block) and was keeping the choke part on.