Systems+Engines

My brother was hanging upside down, peering through a 9-inch square cutout in a bulkhead at the raw-water pump housing on his 3-cylinder Yanmar marine diesel. “How the heck do you get the impeller out of there?” he asked me.This is a very good question. Removing an impeller is something that should be done on a regular basis; Yanmar recommends replacing the impeller on this particular

Manual bilge pump

by Dick Everett, Posted August 19, 2009

Gravity Theory

by Peter Nielsen, Posted December 9, 2008
Smell. Pong. Effluvium. Whichever way you describe it, the airborne essence emanating from Ostara’s aged sanitation system was highly unpleasant. More than just an odor but thankfully short of a full-blown stench, it permeated the forepeak and almost caused a spousal mutiny during our first weekend aboard. No doubt about it – something had to be done.The sanitation system comprised a

Filter Your Fuel Off-line

by Chuck Husick, Posted June 15, 2010
It’s essentially true that if you give a marine diesel engine clean oil, clean air and clean fuel, it will run, if not forever, then certainly for longer than you are likely to own your boat. Using good-quality diesel oil and changing out the oil and oil filter at the manufacturer-recommended time intervals—typically every 200 hours—is a good first step. Similarly, if the air intake is correctly

Quiet Connector

by Sail Staff, Posted December 9, 2008
My wife, Gail, and I recently installed a new radar antenna on the keel-stepped mast of our Bristol 38.8. The first part of the installation was easy. We mounted the receiver and then, using a weighted string as a messenger, pulled the cables through a small hole in the mast near the unit all the way down to the bottom, The difficult part—figuring out a way to keep the cables from slapping
High-quality, long-lasting impellers from JMP are manufactured from a mix of different rubbers and include a surface coating that decreases wear and tear for longer use.Tested by the U.S. Navy, the impellers help keep marine engines working at their highest efficiency, even in harsh operating conditions, by ensuring that their pumps are operating correctly.JMP offers flexible
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