OK, well this is unfortunate….Look very hard to find all the pieces, and do some reconstructive investigation…But, you did get all the little screws out, so that is a break….
Try putting the driveshaft back in, and inverting the gearcase with the driveshaft secured somehow so it won’t fall out…. Now, find a kitchen strainer (don’t let the wife catch you) and place it underneath the hole in the upper bushing where the water enters underneath the pump… You may want to reinstall the four water pump screws (without the pump) to hold the upper bushing it place. You don’t wat to blow that piece off its gasket with excess water pressure, or you will end up with a water leak into the gearcase…Is the upper seal OK? Kinda looks pretty bad under there… Now, have an assistant squirt the hose down on the intake screen, perhaps this will force any impeller debris out and into the strainer….You could also pull that side water intake cover, again, be very careful with those screws…Don’t force them…If they don’t want to come out, probably best to ignore this suggestion instead of breaking little screws off in the housing…
