TOPIC: next queston on merc 500

i want to change the impeller on my 1966 merc 50 hp. how hard of a job is that to do? do i need special tools? i was thinking of resealing the lower when it was off. is there anything i should know about this job before hand or just jump in? thanks frog

quite simple no special tools if it has no water in it leave it along. dont pull the pump base.not needed.if it aint broke dont fix it.

thanks dave, i'am going to pull the lower this weekend, will post for help if i get in a bind.

is there anything i should know about this job before hand or just jump in?

Two things come to mind immediately Frog

1 - I've had so much trouble getting housings to slide down over impellers lately, I've started greasing the inside of the cup (housing) and inserting the impeller into the cup first. Then sliding the assembly over the d/s, and lining up the keyway. If it gives you a fit, keep that trick in mind.

2 - Don't over tighten the bolts holding the housing down to the plate. Get your manual out and torque them to specs. (I always use a little thread sealer or lock tite on those threads, 'cause I'm anal worrying about stuff like that coming loose.)