I have an easy repair for a techinically challenged mechinac (me). I have an airens LM 21 SCH PRO MOWER that has a stuckk throttle which is plusing as I mow . Is this repair a matter of adjusted the cable at the handle or is the problem under the mower mount. I couldn't find a way to get the cable loose. This is a pretty basic problem but I am new to this game. Any input is appreciated. Thanks, Josh.