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back in the hole but do not turn it. Remove the dipstick and ensure that the oil level is above
the lowest line but no higher than halfway between the marks. Extra coolant, if needed, is
stored under the navigation station seat cushion with the tools. Be sure not to over-fill!
c.
Check the coolant level daily. The overflow bottle is easily accessed by removing the upper
table top in the aft port stateroom. Look for the white bottle on the right/aft side. You can see
the blue/green fluid through the overflow bottle, ensuring it is between the low and high
marks. You can also visual check the level by removing the cap. The level should be a few
inches below the top of the reservoir. Extra coolant, if needed, is stored under the navigation
station seat cushion with the tools. Be sure not to overfill!
d.
Make sure the gearshift is in neutral (approx. vertical).
e.
Make sure the battery switches for the starter battery are on. These switches are located in the
aft port stateroom. Both the black (-) and red (+) must be in the horizontal “on” position.
f.
Press the I/O power button on the right side of the engine control panel. It’s the lowest of the
four buttons. The display will illuminate and the buzzer should sound. This is the warning
buzzer you would hear if the engine overheats or if there is loss of oil pressure.
g.
Press the button with the circle and arrow. This is the engine start button and is top button on
the engine control panel. Press the button for a moment or two until the engine starts. The
engine usually starts very quickly (no need to press the glow plug button).
You will need to
increase the RPMs immediately after starting for the warning buzzer to stop. Do this by
pushing the throttle lever forward (counterclockwise) while pressing in on the red button on
at the base of the throttle lever. By pressing the red button, you are bypassing the
transmission and allowing the idle to increase without moving the propeller.
h.
After she starts, check for water flowing out the exhaust. You should hear a splashing sound on
the port side about two feet forward of the stern. Do not operate the engine if water is not
exiting the boat, as this means the raw water cooling is not working.
i.
Please allow 10 minutes of warm up before placing a load on the engine
. Pushing a cold
engine is very hard on diesels.
Operation
– We have found the
40 HP Yanmar engine
to be very reliable
. Cruising should be done at
engine RPMs of 2400 to 2800.
Please do not exceed 2800 RPMs as this is very hard on the machinery,
does not increase your speed measurably and uses large quantities of fuel. 2500 RPMs will push the
boat at hull speed, except in heavy water or tidal currents. 2500 RPMs is roughly equivalent to the
throttle lever being in the “10 o’clock position”.
Also, there is a blower in the engine compartment which is vented in the transom walkway between the
cockpit and the swim step. This blower is temperature controlled so do not be surprised if it comes on
automatically.
Engine Overheat
– If the buzzer sounds while the engine is running, immediately check the oil
pressure and temperature gauges. If oil pressure is low, shut down the engine, check the oil level, and
contact San Juan Sailing. (We have never had an oil pressure problem and we hope you don't either).
Most likely a buzzer means the engine has overheated. Check for water flowing out with the exhaust. If
flowing, check the coolant level. If there is no water flow the water strainer is likely plugged. If
something like eelgrass gets sucked into the engine cooling water intake, it jams the raw water strainer
(located on the starboard side of the engine compartment).
The strainer has been installed above the
waterline, so there is no need to shut off the raw water intake
through-hull seacock (at the hull, below
and aft of the engine) prior to removing the lid to clear debris. To clear it unscrew the top of the
strainer and remove the eelgrass or other materials.
Replace the lid and tighten the wing-nut, being
careful to reinsert the O-ring properly
. If the engine overheats again upon restarting, check to be sure
the O-ring is in place and the wing-nut is tight; if it draws air, it won't draw water (also, if you shut the
raw water intake seacock, even though unnecessary, make sure it’s in the open position). If still
overheating, call San Juan Sailing for assistance.
Engine Shutdown
– PLEASE TURN OFF THE ENGINE WHILE THE BOAT IS MOVING UNDER ITS OWN
POWER
(it can blow the alternator!)
First make sure the engine is at idle and the gearshift in neutral.
Then push the stop cutoff button on the engine control panel. When the engine dies, press the power
button until the warning buzzer stops and the illumination turns off.