If anyone remmbers I bought a 642b in pieces and putting back together and almost ready to fire it up,but I cant figure out for the life of me what the coolant bypass tube that comes from water pump and raps around back of motor and has a "T". I do know the obviouse one that elbows to the intake via a rubber hose but what goes on the other end straight off the metal tube? or was it just capped/plugged off before. None of my service or operator manuals show this.
