Re: ISO ’59 Super Seahorse pump impeller advice

[raglover]

Nothing too big in the way of differences. Impeller is a little bigger than the standard twins and uses a key instead if a pin. Coat the key with grease to get it to stay in better on reassembly, it likes to slide out. I usually put the implementation on the shaft first coat the housing with Vaseline or silicone and then push the housing on as I turn the driveshaft so the impeller "spins" in. Just make sure you spin it the same way as engine rotation.

There is a lip seal in the top of housing, give it a quick glance and a flat rubber ring that seals the drive shaft tube.