Check the intake and exhausting lines before each voyage. These lines
enter your water pump which is normally located on the forward side
of your engine near the bottom.
To fl ush your engine, ensure that the engine is turned off. Then
connect a freshwater source to the fresh water port either as part of
the engine, or available as an attachment on the stern drive depending
on the engine manufacturer. Turn on the freshwater source and turn
on your engine. Let the engine run at idle until it reaches normal
operating temperature, then shut down the engine, disconnect the
hose, and reinstall the cap. Your engine should be fl ushed after each
trip.
To inspect your water pick-up feed, locate the screens on your stern
drive unit and remove the debris lodged in the screen. Smaller debris
can make its way all the way up to the water pump impeller and build
up there, causing malfunction.
To inspect your water pump impeller, ensure the engine is turned off
before locating the water pump housing. Remove the housing to get
access to the impeller. Inspect the impeller for nicks, dings, and ease
of turning.
Typical Volvo Water Pump
Typical Mercury Water Pump
7-13
Care & Maintenance
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