Hi all! Just replaced an old tecumseh with a briggs into a greenfield fastcut.

Everything seemed to run smoothly...I took a punt and simply plugged the new briggs 19hp pro into the previous wire plug which was a tecumseh 13hp. (same plug and wires seemed to line up in the plug) started first go, seemed ok. but did not idle after a few goes but starts fine. dripped petrol (gas) into the air filter and it ran whilst doing this whilst at low revs. but when I went to see if it would run at full throttle it cut out and good amount of smoke came out.

has anyone got any tips?
I probably should re-wire properly, but it could run without changing anything (not idle)

Last edited by CyberJack; 01/01/17 12:39 AM. Reason: Topic Heading.