Have a Beta 43 in my NB. Tried to drain engine coolant for first time today in order to change it. I attached a plastic pipe to the outlet drain valve on the engine and dropped it down to a container in the bilge, removed cap on expansion tank on engine. Opened drain valve and it started to drain out albeit slowly. When there was about 7 litres in the container it stopped draining. By blowing down the plastic pipe it was evident I have drained all liquid above that level. Unfortunately the skin tanks are lower and there is still coolant in those. I removed the bleed not hoping to get a small pipe to the bottom of the tank and to use a small pump to remove the contents. The hole is about 3mm wide and not big enough to insert a effective pipe. The only way I can see to get the coolant out of the tanks is to remove the main inlet pipe at the bottom of the tank. I cannot get a container underneath it as it sits on the bilge bottom. I could ley the contents go into the bilge but that would mean I would have, estimated, 7/10 litres in the bilge form each of the 2 skin tanks.
Am I missing a trick here?