I own a 2001 Chaparral Sunesta powered by a Mercruiser 5.0 EFI engine. The manual isn't really helpful in identifying exactly what drains I should expect to find on my boat. Here's what it says:
"Remove drain plugs from the following locations, if equipped: A Port and starboard side of cylinder block. B Bottom of exhaust manifolds. C Starboard side Y-fitting. D Fuel cooler. E Port seawater pipe. 3 Repeatedly clean out drain holes using a stiff piece of wire. Do this until entire system is drained."
I would prefer a manual that tells me how I can know for certain if my boat is equipped with the various plugs! But here's what I can say I found with my visual inspection:
- Front: Circulating pump drain plug
- Starboard: Exhaust manifold drain plug AND Y-fitting
- Port: Exhaust manifold drain plug AND cylinder block drain plug.
Is a total of 5 drain points possible? At a minimum, doesn't there have to be a starboard side cylinder block drain plug that I didn't find, or does the Y-fitting do the same thing?
PS: My engine number is OM011823