@Retired Wrencher glad you are trying something ? my stand by generator , sits for months , with instant starts , my reference to fuel line replace ment , was after I cleaned out entire set up , verifying a fresh clean start, your star tron / my sta bil , do the same thing, most important proof ? zero / no debris / fuel hose break down at all . when I go at any problem , go after EVERY STAGE , NOT JUST THE MOST OBVIOUS , EX ? frayed belts , WHY? its not the belt , its , INCREMENTAL BEARING LUBRICATION FAILURE , the bearing hangs up / stops for a second , that led me to , cleaning out and regreasing , every wide seal bearing , with https://www.landmsupply.com/lucas-oil-x-tra-heavy-duty-grease-14-5-oz?g, all my decks , pto / mule drive , engage / spin up with total ease. , BTH that pto lever set up is a gold mine , for improvement , pete