Exhaust leak

[GasCan II]

1997 Mercruiser 350 L full closed cooling. I have an exhaust leak and need to install a new gasket, do I have to drain all the coolant or just below manifold level ?
Thanks

 

[Bondo]

Ayuh,.... If yer pullin' the exhaust manifold, drain just the manifold yer pullin',.....

 

[GasCan II]

Thanks Bondo !