Outboard impeller replacement

After you remove this grommet, you can unfasten the transmission linkage.

Our Mariner 5 hp was taken in on a trade last year.  It was spitting plenty of water so we used it for the season but now is the time to replace the impeller.  It is way better to replace it too early that too late.

We ordered the impeller, 2 extra shear pins and a cotter pin from Boats.net.

Here are photos and descriptions of the process:

Here we are removing the prop and unbolting the lower unit.

Here we are removing the impeller housing.

Here is the worn impeller.  Two fins were cracked
so we got it in the nick if time.
If it disintegrates while running, pieces can get lodged in passageways.

Here is the drive shaft assembly.
It is unrelated to the impeller, we just wanted to see it's condition.
Looks good.

This is the new shear pin.  The grooves make for weak spots that will fail if you hit a stump.
This can save the prop.  If you have pliers with you and a spare shear pin, you can keep boating.

Back in business!