I adjusted my carb air screws yesterday and today i noticed the 650 backfiring, I went to look at the screws and the one from the rear carb came out of the hole. Am I suppose to be using some locktite on these, I was fortunate that the screw fell on the top of the engine and was able to find it.
thanks

 

Blair,

How many turns out was it. Anything under 3 or 3.5 turns shouldn't have vibrated out. I'd keep a close eye on it , maybe get Dale to replace that one if it's a little loose.

 

thanks for the reply steve.