I've got a Huskee riding mower, 15.5 Hp, Tecumseh engine. Lately I have to have the choke pulled out about 1\3 to keep it running. I've replaced the plug, cleaned the air-cleaner, replaced the gas line filter. I've sprayed about a 1\3 can of carb cleaner into the carb with the engine running. No improvement so far. Any suggestions on what to try next?
Thanks