RE: Shindaiwa weedy motor
Mike,
If are looking in junk boxes, The right Walbro will have a little number inside the venturi. The number you are looking for is a 28 or a 27. Look in your Walbro 167-1 carb and see if it has a 28 molded into it? A WT 499 normally doesn't have the pump.
Enjoy,
Jim