Gemini 105Mc Owner’s Manual
4
Copyright © 2004 Performance Cruising Inc.
Gemini Quick Start Guide
Batteries and Battery Switch
The Gemini comes with three (3) number 24 deep
cycle marine batteries. These are located under the
navigation table in the port hull with the main battery
switch just above them. There is room for an addi-
tional battery in the compartment.
To turn the batteries “On”, turn switch to position '1'
(which includes (2) two batteries). Everything on the
boat will go through battery
'1' including engine start.
Switch position '2' includes (1)
one battery. Never leave the
switch in the “Both” position
as there is no reserve bat-
tery. When switching from
position '1' to position '2',
move the switch through the
“Both” position, not “Off.”
Failure to do so while the engine is operating can re-
sult in damage to the alternator.
Westerbeke Diesel Engine
Before starting the engine, always make sure that the
cooling water will reach the engine by turning the
engine seacock lever to the allow water from the sea
to flow. The engine seacock is under starboard aft
bunk towards the front. The seacock has three posi-
tions:
1. In from the sea
2.
Closed
3. Fresh Water Intake (for winterizing)
Placing the handle all the way up brings seawater in
to cool the engine if the hose is facing aft. (With the
hose facing forward, the handle needs to be down for
open) With the handle pointing straight out away
from the hull the seacock is closed and with the han-
dle all the way down, a fresh-water hose can be
hooked up to the seacock to flush fresh water into the
engine for winterizing. (Handle up if hose faces for-
ward).
There is also an inline water strainer. The strainer
reservoir should be full of water.
Regarding fuel; inside the center top hatch on the
stern are two (2) valves to select the fuel from either
the port or starboard 18-gallon tank. These two valves
must point the same way. One is fuel feed the other
is return. These valves simply point to starboard or
port. The short, pointy end of the handle indicates
which tank is in use.
To lower the sonic drive leg turn the red stopcock
lever in the starboard cockpit locker inline with the
hydraulic line and then loosen the black valve on the
red hydraulic oil reservoir. The leg will begin to drop
and then lock into position with a loud click. Once in
position, re-tighten the black knob.
To start the engine, make sure gear lever is in neu-
tral. With the lever vertical, use both hands, and with
the left hand pull the throttle lever 1/4" outward
while the right hand pushes the lever forward to an
angle of 45º. With the throttle in the “out” position,
the gears are not engaged.
Next, turn the ignition key to run and the buzzer will
sound. First, press the preheat button for approxi-
mately 15 seconds then, while still pressing preheat,
press the start button to turn the engine over. Follow-
ing starting, you should always check that cooling
water is coming out of the exhaust on the transom
beside the drive leg. If no cooling water is coming
from the exhaust, the engine seacock is in the incor-
rect position or clogged in which case you should turn
off the engine and correct the problem.
To engage the gears and propeller, move the gear
lever back and the lever will set into position. Push
the handle forward for forward movement and back-
ward for reverse.
To stop the engine, first return the throttle to neu-
tral. Next, lift the silver knob on the right above the
instrument panel, which stops fuel from getting to
the engine. Turning the key to the “off” position will
not turn the engine off. Following turning the engine
off, turn the key to the “off” position to stop the
buzzer. Turning the key to the “off” position with
the engine running can result in damage to the alter-
nator. Remember to push the silver “kill” knob back
down, otherwise the engine will not re-start.
To raise the leg following motoring make sure the
black knob is tightened on the hydraulic oil reservoir.
Pull out the chrome knob in the back of the locker to
release the reverse lock, and then pump the red han-
dle. The first pump will be hard and then it should be
possible to feel the leg slip out of reverse lock and
start to come up. At that point, let the chrome knob
go and continue pumping. Once the unit is up, turn
the red stopcock vertical to stop any fluid loss
through the pump so that the leg will stay up.
Electric Panel
There are 2 - 12-volt electric panels with circuit
breakers for the following:
x
Compass Light
x
Masthead Lights
x
Running Lights
x
Anchor Light
x
Instruments
x
Fans
x
Shower Pump
