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vacuum break (plastic or bronze) would be a good idea at this point. Pay close attention to the exhaust pipe/cooling water hose routing diagram in the installation guide. The water strainer can be installed just about anywhere but make sure you can reach it for cleaning. The owner's manual will tell you what gauge wire to use and how large a battery to use for the starter motor. Locate the instrument panel on the transom just below the tiller. There is not enough room behind the panel to allow the engine cutoff switch to function so you will have to locate the switch in the cockpit locker. Use a small piece of aluminum angle bolted to the side of the cockpit riser and mount the cutoff switch to that. The instrument panel wiring on a Yanmar is real straight forward - just a couple plugs. Coil up the remainder of the wiring and mount it under the cockpit.
The raw water thru-hull fitting should be mounted way below the waterline so that when the boat heels over the thru-hull is still in water. To counteract this problem I installed and connected two 1/2" thru-hulls - one on each side of the keel. A vacuum break must be installed in the system. This is to prevent raw water from siphoning back through the hose and sinking the boat. The vacuum breaker must be installed at a certain height from the exhaust cooling water injector. The Pacific Seacraft boats have the breaker inside the cockpit locker and vented outboard. Pay close attention to the exhaust pipe/cooling water hose routing diagram in the installation guide. Route all wiring and hoses with proper supports so there will be no chafe problems. Fuel line is especially soft and wears through easily. Electrical wiring chafes and can lead to shorts. Raw water leaks will lead to engine overheating. The water-lift muffler must be mounted lower than the exhaust pipe. Make sure you hook up the water injection cooling hose properly or the water-lift muffler will melt. You will have to glass in a small shelf to mount the Vetus type water-lift muffler. The engine control lever recommended by Yanmar is the single lever type. Why, I don't know - the two lever system works O.K. Mount it on the starboard cockpit riser so the cable routing is easily facilitated. Route the control cables through the space in the transom back to the engine. Follow the owner's manual to adjust the cable settings. I believe the diesel tank in Pacific Seacraft boats is located in the bow. It is fiberglass and is filled through a deck plate bolted to the tank surface. Another deck plate must be installed on the foredeck. If you choose this location, make sure the diesel fuel supply and return line is completely protected from chafe as it leads aft to the engine. A small tank may be fabricated out of stainless or aluminum and located in the hanging locker or maybe the Q-berth. Remember - whether the tank is empty or full will affect the balance of the boat. (again, Screw Top)
FINAL CHECK
After all the systems are hooked up, check them again. While the boat is still out of the water it is a good time to check that all the systems are operational. Add oil to the transmission and crankcase and add a few gallons to your fuel tank. Simulate the ocean by sticking the raw water cooling hose into a 5 gallon bucket of water. Make sure there is more water available if you need to fill the bucket. Using the hand crank make sure the engine turns over smoothly - use the decompression lever. Make sure the electrical system is working by turning the key on and listening for the low oil pressure warning buzzer. Ensure that the engine shut off switch is not pulled ON. Make sure everyone is clear of the boat and start 'er up. If there is no water running out of the exhaust fitting after about 2 minutes or if a warning buzzer sounds off - shut 'er down! Fix the problem before you start it up again. If the engine is running properly, shut it down after about 5 minutes. Reattach the raw water hose to the thru-hull. Put the boat in the water. If you have a dripless shaft seal, be sure you "burp" the unit before engaging the transmission. Break-in the engine per the manufacturers suggestions. Always run your diesel under load (leave it tied to the dock and put it into forward gear if you don't go out) about once a week for about half an hour. Keep your fuel tank full and add some biocide to the fuel. Change your oil three times a year, change your fuel filter(s) and engine zinc's once a year and you be smiling! Congratulations! What's next? How about a Disco Deck?
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