HELLO, I JUST BOUGHT A SUZUKI 2.2HP (87')OUTBOARD OFF CRAIGSLIST FOR$30 AND ITS IN GREAT SHAPE RUNS GREAT AND HAVE A FEW QUESTIONS ABOUT IT, DO THESE ENGINES ALWAYS STAY IN GEAR? WHAT IS THE S / O SWITCH-KNOB CONNECTED TO THE GAS LINE FOR AND AIR THEY JUST AIRCOOLED? IF YOU CAN HELP THAT WOULD BE GREAT, I WOULD JUST LIKE TO KNOW A LITTLE BIT ABOUT THIS THING BEFORE I USE IT,THERE IS NO KIND OF SHIFT LEVER ,PROP CONSTANTLY SPINS