300XS Water Pump - removing gearcase

[GamblerSS]

Dropping the torquemaster gearcase on my 300XS for the first time and its got a pressure sensing line coming out of the front of the case. How do I disconnect it so I can drop the case to change the pump impeller?

[vnemous]

You will see a little black lip on the fitting. Press it down and pull the hose out. Its a small compression fitting for the speedo.

[GamblerSS]

Thank you so much! Anything else I should know when putting it back together? Was planning to just replace the impeller and base gasket since the motor only has 37 hours on it.

[vnemous]

nah pretty straight forward if youve done a merc lower before. Turn drive shaft clock wise while pushing down on the water pump housing to seat the impeller. I like to put two allen wrenches in the the opposite corners of the water pump housing to keep the gaskets wear plate and housing in line while I turn the drive shaft and push down on the housing.