Gary, first welcome t the MMI Afourian Forum.
Yes it could be very simple. What is your idle RPM? Should be around 700 or so. Did you try to "richin" the idle a bit by turning in the idle screw a 1/4 turn or so?
How long since a tune-up?
If your idle speed is slow first try the mixture screw in 1/4 turn to see if the idle speed comes up a bit or it idles in forward. If no joy try the idle speed screw to get a few more RPM's and see how that works, then get back to us.
Also check to see the carb is on tight and do check the "scavange tube" to be sure it is not leaking air too.
Dave Neptune
