yanmar 1GM10 - draining seawater coolant

[fjweaver]

I want to drain the seawater to replace the impellor, anode, check the strainer etc.

Looking at the workshop manual I can't tell where to drain from - other than opening the cover screws (speedseal).

Also when putting it back together do I need to bleed the water system?

 

[bendyone]

There is a drain plug on the left hand side under the exhaust elbow. Used to drain for the winter otherwise just pull of the tube by the water pump which will drain most of the water out to change the anode. No need to bleed the system just start it up

 

[fjweaver]

thanks bendyone