kawasaki 22hp vtwin surging

[2jd212s]

Hey if I can pick your brain for a minute. My zero turn was brought out of winter storage and was fine for two cuts. When I returned to an idle the engine began surging. It runs fine at wide open throttle. Fuel, and air filter is fine. Plugs are fine. Gas cap vent is unplugged. Any ideas? Thanks, Steve

 

[rcbe]

if fuel was left standing in carb over winter, evaporated fuel may have jelled up @ carb bottom and - after running - some of that jell has clogged the idle jet passages ? Might try a good dose of Seafoam treatment in the fuel tank and see if carb will clean up.
Also, remove engine shroud to make sure no mice nests blocking cooling system..