Re: Yanmar 3gm raw water pump
It is easier to pull the entire pump off.
There is an after market kit you can get that will turn the pump around so that all you have to do is take off the pumps' cover to replace the impeller. It comes with brackets and a pully that bolts right on to the exsisting holes in the block. I can't remember who makes it but maybe someone else can.
We have three rules;
No bleeding on the sails.
No slobbering on the charts.