my nephew has a gs500 with a problem, it seems to run good, except sometimes it won't drop below 4000rpm when decelerating, he pulls in the clutch and it won't drop below 4000rpm unless he uses engine braking to reduce rpm

any ideas??
Gerry

Carburetion too lean. Check to make sure the carburetors are in their air boots securely, first. And, then check the airfilter; if it's a paper type, make sure there's no holes; and if it's foam, make sure it's oiled.

Welcome to GStwin!

Silly Q, but he knows to turn the choke off after a minute?

yes i asked, yes he did!!
he lives about an hour away, so i am looking for as much info as i can get, before heading over there
thanks

gerry