I HAVE A 30HP MARINER. IT SEEMED TO HAVE PROBLEM WHEN IN IDLE. IT SOUND LIKE A 1060 JEEP I HAD THAT WHEN THE SPARK PLUGS WHERE BAD IT SOUNDED BAD TILL I CHANGED THEM. IT RUNS PERFECT ON WOT BUT IN NEUTRAL THE MOTOR WANTS TO FALL OFF SHAKING. CHANGES THE SPARKS ,CABLE,AND THE PART THE CABLE GOES TO I THINK IT'S CALLED A POWERPAK . I TOOK THE CARB APART CLEANED IT BUT I THINK I PLAYED WITH THE SCREWS THAT ACCELERATE THE CARB AND THE AIR MIXTURE SCREW.I TRIED TO EXPLAIN THE BEST . SO PLEASE LET ME KNOW WHAT YOU THINK.
