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A typical inboard auxiliary engine installation is complicated by the fact that it must go through the boat below the waterline.

The basics on auxiliary propulsion systems Issue 51 : Nov/Dec 2006 Unless you are exceptional sailors and purists, like Lin and Larry Pardey, you probably have a mechanical propulsion system on board ...

The finished waterlift muffler Paul designed and built to fit in the space available behind the engine is very creative. Note the valley, which allows the propeller shaft to pass through, and the short pipe, which bridges the valley in order to integrate the interior volume. The inlet is on the front; the outlet is on the top.

Custom waterlift muffler calls for creative approach Issue 54 : May/Jun 2007 My friend, Ken Simmons, and I ran into a common problem when we replaced the aging Atomic 4 in his 1968 Pearson Vanguard wi...

From top: a typical multi-weight oil for gasoline service, synthetic motor oil for gasoline and diesel applications, and straight weight oil for diesel service.

What you need to know about oil Issue 55 : Jul/Aug 2007 The motor oil in any sailboat’s auxiliary engine is second in importance only to the supply of fuel and air. If neglected, certain — and o...

Propylene glycol-based coolant

An often-neglected, but vital, part of auxiliary care Issue 56 : Sept/Oct 2007 If your auxiliary engine is to age gracefully while performing well, two things must be constantly controlled: friction a...

How does that saying go? You can take the girl out of the country, but . . . In this case, you can take the outboard out of the salt water, but can you take the salt water out of the motor? Alan Lucas says a fresh-water flush in a bucket will do the job.

Being kind to your outboard engine Issue 57 : Nov/Dec 2007 Low-powered yacht tender outboards are often overworked and under-serviced. They rarely, if ever, enjoy a thorough freshwater flush. This can...

Rebecca Burg took the hands-on approach when matching a new prop to her boat’s new engine.

To avoid engine troubles, fit the right propeller Issue 65 : Mar/Apr 2009 The shark meandered toward my right foot. It was so close I could see brown spots on its nose. Loaded with tools and dive gear...

This generic engine’s header tank, heat exchanger, and exhaust manifold are contained within a common housing. On some older engines these components may be separate, but the principle of operation is the same.

Eliminate overheating in 12 easy steps Issue 68 : Sept/Oct 2009 Ask any owner of an auxiliary diesel sailboat what his or her most common engine-related problem is and chances are the answer will be, ...

The purpose of a wind generator aboard a sailboat is to provide as constant a source of electrical power as possible. Blade design and diameter are major factors in achieving this. This design uses slender blades and a relatively large diameter.

Electric power for the independent sailor Issue 69 : Nov/Dec 2009 Wind power is a form of solar energy — winds result from the uneven heating of the atmosphere by the sun. To generate electricity, a w...

With the head intake seacock closed, operating the head draws antifreeze into the system from the container via the service port.

An easier way to ward off Jack Frost’s fingers Issue 74 : Sept/Oct 2010 Northern sailors have two seasons: sailing season and maintenance season. One of the primary goals when preparing a boat for the...

Aboard Moonrise, the water shortage was restricted to the engine cooling system, and eventually mitigated by ingenuity, at right and below. An anchorage neighbor experienced a more distressing, if temporary, depletion due to a falling tide, on facing page.

Maintenance seems less onerous in the right surroundings Issue 76 : Jan/Feb 2011 If the definition of cruising is performing boat maintenance in exotic locations, does that mean the more maintenance, ...

The damper plate is constructed of two plates and springs. The transmission shaft fits into a toothed hole in the center.

Replacing a reclusive transmission component Issue 78 : May/Jun 2011 I am meticulous about maintaining my sailboat. I perform routine maintenance on a schedule and I address little problems that arise...

Two lengths of nylon twine tied around the hose gave Clarence the purchase needed to pull the hose onto the barb.

A nifty way to persuade hose onto a barb Issue 88 : Jan/Feb 2013 After I replaced my boat engine’s water-pump impeller, the supply hose refused to slip back onto the fitting. Even though I had lubrica...

Gary’s vent dryers, clipped to their backing board, are ready to be installed, facing page. Each end cap is made up of a PVC adapter, a screen, and a nylon barb fitting, at top. Gary trimmed the screens to fit inside the adapters, above.

Vent dryers bar moisture from fuel tanks Issue 93 : Nov/Dec 2013 Our marina has a regulation that prohibits us from refueling our boats from jerrycans while tied up in our slips. The trouble is, I lik...

When the fuel lift pump on his 30-year-old engine wore out, Art bypassed it with an electric one.

Electric substitute for a mechanical pump Issue 93 : Nov/Dec 2013 Our 46-year-old Allied Seabreeze, Secret Water, is a wonderful sailing boat. Nonetheless, reliable auxiliary power is a high priority....

The outboard clamps to a 2 x 4 that’s notched so the motor’s bracket clears the truck’s crossbar. David fastened the board with a lag bolt at each end through the truck frame. The metal plate extends the truck’s foot to prevent the rig from tipping.

A mobile stand takes the weight Issue 97 : Jul/Aug 2014 I live just a couple of houses from the beach where I keep my dinghy, but now that I have a heavier 4-stroke outboard it’s a chore lugging it do...

Magnetic alarm diagram

A raw-water seacock that screams to be opened Issue 102 : May/Jun 2015 We all know the importance of opening the engine’s raw-water seacock before starting the engine and that forgetting to open it ca...