MY SETUP IS SAME AS SLAB HAPPY, 135 MERC 2 STROKE AND 8 HP HONDA//MAIN HOSE TO WATER SEP. THEN HOSE OUT TO SQUEEZE THEN HOSE TO 3 WAY VALVE SWITCH THEN LINE TO EACH MOTOR. SWITCH FROM ONE MOTOR TO THE OTHER.
WAS TOLD BY MECH FREIND THAT WITH OUT THE SWITCH VALVE YOU CAN DO MAJOR DAMAGE TO MAIN MOTOR.
ALSO HAVE TOLD OTHERS THAT WERE HAVING PROBLEMS WITH BIG MOTOR NOT RUNNING RIGHT TO SWITCH OVER TO THIS SYSTEM AND PROBLEM SOLVED.