mjm yachts MJM3 User manual

OWNERS GUIDE
MJM3 OWNERS
GUIDE

“Believe me, my young friend, said the water rat solemnly, there is
nothing, absolutely nothing, half so much worth doing as simply
messing about in boats. Simply messing...nothing seems really to
matter. That's the charm of it. Whether you get away, or whether
you don't, whether you arrive at your destination or whether you
reach somewhere else, or whether you never get anywhere at all,
you're always busy, and you never do anything in particular...”
…The Wind in the Willows by Kenneth Grahame

Dear MJM3 Owner,
Congratulations on becoming an owner of an MJM3. We are dedicated to making it the world’s
best in class. As you read this guide and share cruising adventures, we hope you will discover
our mission has been accomplished.
MJM’s are built of the highest quality materials; strong, light, modified epoxy, infusion cored
composite. That contributes to MJMs being most fuel-efficient yachts of their type by a wide
margin. The same is true in the selecting of equipment suppliers and cabinetmakers. MJM3 is built
tostructural scantlings of Certified ISO Category B Offshore, the highest rating for seaworthiness
achieved by a boat under 40 feet. MJM3 leads the outboard market with unusually complete
standard specifications and amenities. The boats are safe, reliable, easy to handle by one person,
and high performers. Last but certainly not least, and our number one design mandate, they turn
heads everywhere they go.
In addition to this Owner’s Guide, and primary in terms of authority, are two large binders with
equipment supplier owner manuals and warranties. These documents contain an enormous
amount of important information. Please keep them accessible for reference when you have an
issue or question not covered in sufficient detail by this guide. You can download most from
supplier websites or install them on your display.
This guide reflects our experience from building over 300 MJM’s. I personally have spent more
than 6000 hours cruising on MJM yachts so want to impart some advice and background
information along with the “how to do it.” See comments in the blue sidebars. As you enjoy your
new boat, remember that much of the equipment contains computer chips that can sometime have
glitches, which are often corrected with a re-boot.
With proper safety precautions and good weather planning, you will spend many enjoyable hours
on your new vessel!
Peter L. Johnstone
Chairman
[phone]
[email protected]

Boat Information
MODEL
HIN NUMBER
DELIVERY DATE _
AIS MMSI NO. _
REGISTRATION NO.
ENGINES
MODEL
SERIAL NUMBERS
PROPELLORS
MJM YACHTS LLC Peter L. Johnstone
Phone [phone]
Email in[email protected]
MJMSERVICECONTACT
Email W[email protected] or [email protected]
DEALER
BROKER
PHONE
EMAIL

QUICK START GUIDE
Here is a reminder checklist for an experienced captain, familiar with operation of twin
MercuryVerado outboards equipped with Joystick Piloting and information in this guide and
accompanying binders.
☐
Check raw water systems that raw water strainers of the GENERATOR and
combined SEAKEEPER/ AIR CONDITIONING, located under aft cockpit seat are not clogged.
Change AC Power Source - Shore Power to Inverter or Generator
☐ For the inverter, nothing is required. The Victron Quattro combination charger/inverter has an
automatic transfer switch and will instantly switch over. To operate the generator, turn on the
Generator Start switch at the top of the DC panel. Wait at least 30 seconds for the engine room blowers
to operate. Then press the start button on the generator controller. After the generator starts, switch off
the pedestal shore power breaker or on-board ELCI and unplug the shore power cable. The power will
automatically transfer over to the generator.
Activate 12 Volt Equipment
☐ With both house battery switches on, turn on the 150A "DC MAIN" breaker at the top of the
panel
☐ Turn on both the port and starboard battery switches above the DC MAIN breaker
☐ Ensure the Mercury Theft Prevention System key-FOB is inserted into the slot above the
electrical panels.
☐ Insert and turn ON ENGINE KEYS high up under companionway bulkhead. Listen for
acknowledging beep and look for Green “Systems OK” light on Vesselview.
If start batteries are low, don’t leave the dock until you diagnose and correct the problem.
☐ LOWER engines using rocker switch on port control handle, confirmed by trim bars in lower
center on VesselView.
Ensure people, equipment, lines, and hoses are clear and not in the water
before starting. Start Your Engines
☐ Momentarily TOUCH engine start buttons to starboard of wheel. Don’t hold them in. It’s
automatic.
☐ TAP JOYSTICK lightly in any direction to insure it is functioning. The rim lights up GREEN.
Cast Off Confirm that no one is on the foredeck or in the water.
☐ If everything is in order, cast off dock lines. When maneuvering with the JOYSTICK, minimize
going back to center to avoid shifting of outboard gears. If moving sideways to clear a float: You
can move the bow to catch up with the stern by twisting the knob at the same time while held
sideways…likewise with moving the boat slightly forward or aft by leaning the joystick forward or
aft while still leaning the joystick in the sideways direction desired.
☐ Move the SHIFT LEVER forward out of neutral normal operation to automatically disengage the
JOYSTICK. The JOYSTICK is automatically ready for use (Green Lighted Rim) when SHIFT is in
neutral.

CE CERTIFICATION
CERTIFICATE NO.
BBBW005
AUTHORITY: ADDRESS:
International Marine Certification Institute
Rue Abbe Cuypers 3
B-1040 Bruxelles. Belgique
PHONE [phone]
WEBSITE
www.imci.org
CLASSIFICATION
ISO CE Mark Design Category B Offshore (EC Directive 94/25/EC) for craft designed for
offshore voyages (1) where the vessel is correctly handled in the sense of good
seamanship and operated at a speed appropriate to the prevailing sea state and (2) with
significant wave heights above 4 m (calculations are based on 7 m) and wind speeds
more than Beaufort Force 8, but excluding abnormal conditions, e.g., hurricanes.
CAPACITY
Maximum 15 Persons
PERSONS
Maximum Load 3518 kg
PERSONS/GEAR
Maximum Load 3518 kg
RECEIPT BY OWNER In compliance with ISO 10240:1995(E)
the owner hereby certifies receipt of this manual and has
read and agrees to the terms of the Builder’s Limited Warranty
included herein.
NAME Signature
Printed Name(s) and Date
BOAT
Boat Name and Hull Number
CONTACT INFORMATI0N
Street Address
City, State, Zip
Mobile Phone
e-Mail
Please sign one ofthe two copies ofthis page and return it in the attached stamped envelope to MJM
Yachts, LLC, 230 Clarks NeckRoad,Washington NC27889

10
49
TABLE OF CONTENTS
1 INTRODUCTION 1
1.1 Purpose and Limitations .................................. 1
1.2 Standard Specifications ................................... 1
1.3 Conventions..................................................1
2 SAFETY and some USCG REQUIREMENTS 2
2.1 Binder Manuals ................................................... 2
2.2 Standard Equipment .......................................... 2
2.3 Commissioning Package Safety Items ........ 3
2.4 USCG required equipment ............................. 3
2.5 Additional Safety Equipment ........................... 3
2.6 Some Additional USCG Requirements ....... 3
2.7 Fuel Shut-off Valves .......................................... 4
2.8 Fire Suppression ................................................ 4
2.9 Notices...........................................................4
2.10 Emergency and Thru Hull Diagram ............... 5
3 PROPULSION 6
3.1 Engines..........................................................6
3.2 Engine Checks .................................................... 6
3.3 5 Steps to Start ...........................................7
3.4 Stopping the Engines ....................................... 7
3.5 New Engine Break-in ........................................ 8
3.6 Operating Parameters ....................................... 8
3.7 Leaving the Boat ................................................ 8
3.8 Mercury Verado 300 & 350 HP Engines .... 9
4 INSTRUMENTS AND CONTROLS 10
4.1 Helm Station ..................................................... 10
4.2 Mercury Features and Controls (pages 56 -
77) 11
4.3 Joystick Piloting....................................... 11
4.4 DISPLAYS ......................................................... 12
4.5 Compass Heading and Calibration ............ 12
4.6 Trimming the MJM3 ........................................ 12
4.6.1 Engine Trim ..................................................... 12
4.6.2 Mercury Active Trim ....................................... 12
4.6.3 ZipWake Auto Trim ....................................... 12
4.7 Searchlight ................................................. 13
4.8 Multi-Function Display (MFD) ....................... 13
4.9 Console Switch Panel .................................... 13
4.10 Windshield Operation ..................................... 14
5 ELECTRICAL SYSTEMS 15
5.1 Electrical Safety .............................................. 15
5.2 Electrical Power ............................................... 15
5.3 Shore Power ..................................................... 16
5.4 Fuse Locations ................................................ 16
5.5 24-Hour Circuits ........................................ 16
5.6 The 12V DC Panel ......................................... 17
5.7 The 120V AC Panel.................................. 18
5.8 Westerbeke 3.5 SBCG Generator (Option )19
5.9 Generator Component Locations .............. 20
5.10 Victron Inverter/Charger ................................ 21
5.11 Bonding....................................................... 21
6 WATER SYSTEMS 22
6.1 Fresh Water................................................ 22
6.2 Hot Water.................................................... 22
6.3 Gray Water................................................. 23
6.4 Raw Water.................................................. 24
7 SEAKEEPER GYROSTABILIZER (Option) 25
7.1 To Start the Gyro....................................... 25
7.2 Activate/De-activate.................................. 25
8 EQUIPMENT, APPLIANCES and FINISHES 26
8.1 Anchor Windlass........................................ 26
8.2 Anchor Washdown.................................... 26
8.3 Fusion Multi-media Player ....................... 26
8.4 Privacy/Sunscreen Curtains (Option) ......... 27
8.5 Cooktop....................................................... 28
8.6 Microwave................................................... 28
8.7 Refrigerator................................................. 28
8.8 Ice maker.................................................... 28
8.9 TV (optional)............................................... 28
8.10 Vacuum Flush Head System................... 29
8.11 Air Conditioning (Optional) ...................... 29
8.12 Finishes....................................................... 30
9 APPENDIX 31
9.1 The Top 10 Causes of Engine Failure.... 31
9.2 Diesel Operation........................................ 32
9.3 Starting with Low Batteries...................... 34
9.4 Winter Storage........................................... 35
9.5 Spring Commissioning.............................. 36
9.6 Hauling Out and Blocking ........................ 36
9.7 Trailer Loading Checklist.......................... 36
9.8 Fuel Consumption..................................... 37
9.9 Routine Maintenance................................ 38
9.10 Boat Lift and Bunk Offsets....................... 39
9.11 Systems Location Plan............................. 40
9.12 Systems Key.............................................. 41
9.13 Wiring Diagrams........................................ 42
9.14 Fuse Locations & Specifications............. 43
9.15 Fuel Consumption Log ............................. 44
9.16 Pamlico Yachtworks Limited Warranty.......4
45 5
THE MJM TEAM
10.1 Bob Johnstone...........................................49
10.2 Chris Hughes .................................................... 49
10.3 Doug Zurn................................................... 49
10.4 Scott Smith................................................. 50
10.5 Mark Lindsay............................................. 50
10.6 Steve Burke................................................ 50

MJM3
LOA: Length Over-All including engines down &bow roller ..................... 38’2”
LOD: Length on deck (LOD .................................................................................. 35’ 8”
Beam (Maximum width on trailer) .......................................................................... 11’ 0”
Maximum Trailer weight (full tanks) .............................................................. 13,279 lbs.
Draft with Engines (Up) Down ........................................................................... 21”/ 32”
Displacement ½ Load ................................................................................... 12,300 lbs.
Fueltank ................................................................................................................. 250 gal
Fresh water tankage (including hot water tank) ................................................ 58 gal
Holding tank ............................................................................................................ 25 gal
Air height above water to top ofradar dome mounted on hard top ............. 8’ 9”

1 INTRODUCTION
1.1 PURPOSE AND LIMITATIONS
This purpose of this Owners Guide and the equipment suppliers’ manuals in the accompanying
binders is to provide you with an overview of the yacht’s equipment, operation, systems, and
maintenance. The people at MJM and Pamlico Yachtworks have taken pains to edit this guide for
accuracy in good faith.
Most of these topics require further study and learning by the captain of a
vessel who assumes extensive responsibilities for safe operation of the
vessel and for safety of the crew.
This summary guide of yacht equipment and operation will never be
complete or accurate in all respects. And, since we frequently make
improvements, we assume no responsibility for missing information or
errors contained herein. This document doesn’t replace common sense nor
qualify the reader in safety practices, boat handling or navigational skills.
Mastering these systems and the skill of seamanship is each owner’s/
captain’s responsibility. If this is your first yacht, or if you’re changing from a
different type of yacht, please get instruction and experience before
assuming command. Your dealer, yacht club, marina, or the US Power
Squadron https://www.usps.org are all good resources that can recommend
licensed captains, schools, or other instructional entities.
Although this guide and the accompanying binders describe systems on the
boat, they don’t qualify you to work on them. When they need attention,
please use qualified and certified trades personnel. If you question the
information or are unsure about an action, check with the equipment
supplier, a qualified person or us.
The Appendix includes other useful information. And there’s a chapter on the
people who create MJM yachts you can contact if you need help. Study these
resources to understand how to operate your yacht safely.
The operation of a powerboat can be dangerous. Pay careful
attention to safety notices in this guide and in the manuals in the binders.
Keep this guide in a secure place on the boat. If you sell the yacht, please give
this copy to the new owner.
1.2 STANDARD SPECIFICATIONS
You may download the latest version of this guide and the standard
specifications for a MJM3 from http://www.mjmyachts.com/MJM3 to install
on your computer, an iPad or navigational display.
1.3 CONVENTIONS
When we reference a specific device or item of equipment on the boat, it will
be in all caps, such as HOUSE BATTERY.
As we describe each device, we often use the following order.
This guide is published in accordance
with ISO standard 10240:1995E Small
Craft - Owner’s Manual.
Please contact us if you have a question
about the material in this book, if you find
a conflict between this material and the
material in the binders or if you find an
error or important omission on the
following pages, please contact customer
service at Pamlico Yachtworks
…R.I.J.
1. BREAKER PANEL settings
2. Function, what it does
3. Directions for use
4. Advice or comments in a sidebar
5. The URL for the manual if available

To send a distress call (without
specifying its nature) press and hold the
red distress key for 3 seconds. See
Ray218E/Ray55E Installation and
Operation Instructions.
2SAFETY and some USCG REQUIREMENTS
2.1 BINDER MANUALS
The equipment suppliers’ manuals in the accompanying binders have many
safety notices that relate to their products, their operation and maintenance and
their use in the boat. Ensure that you understand this essential information
before you operate the boat. Spend time reviewing the safety procedures, how
safety equipment works and where It’s stowed. Instruct guests in safety
procedures.
2.2 STANDARD EQUIPMENT
VHF Radio BREAKER PANEL settings: ELECTRONICS breaker on. The VHF RADIO
may be used for receiving weather broadcasts, communicating with harbors,
locks (ch13), bridges (ch9), marinas, the U.S. Coast Guard (USCG), rescue
services boats and other boats. The USCG monitors channel 16. If you normally
have your radio tuned to channel 16 you can listen for emergency calls from
nearby boats or be able to make an emergency call quickly. Don’t use Channel
16 for a private conversation.
MMSI Number The radio has Digital Selective Calling (DSC) . It’s arguably the
most important piece of safety equipment on the boat. There’s a one-button
emergency transmit button that sends a Maritime Mobile Service Identity (MMSI)
number to the USCG. The signal identifies the boat. It’s interfaced with GPS so
your position will be sent with the emergency message. The Automatic
Identification System (AIS) will report your MMSI number to other vessels and
you will see their MMSI number. If you sell your boat, log onto your account to
cancel the MMSI number, so the new owner can register, acquiring a new MMSI.
In addition to the safety function, an MMSI number is like a phone number. You
can make a call to another DSC -equipped vessel if you know its MMSI number.
Only the vessel being called will receive the hail.
BoatUS http://www.boatus.com/MMSI/ is authorized by the Federal
Communications Commission and the USCG to assign MMSI numbers. The
Installation and Operation Instructions for the VHF RADIO included in the binder
explains how to install the MMSI number in your radio. It also explains how to
use the VHF RADIO. It may be downloaded at:
https://raymarine.app.box.com/s/grwg60669c5sozf6iolq/1/2757682985
The Horn BREAKER PANEL settings: HORN breaker on. The USCG requires a
“Sound Producing Device” for signals under many circumstances. The HORN is
operated from a switch on the CONSOLE SWITCH PANEL at the helm. The
adjacent UNDERWAY HORN/ANCHOR switch has programmed signals. (See
page 13.)
Electronics fail. It’s wise to have a portable VHF radio, GPS receiver,
SEARCHLIGHT and HORN that are battery operated and handheld .
Fire Extinguishers See EMERGENCY DIAGRAM page 5 for Fire Extinguisher
locations when the boat is delivered.
Carbon Monoxide Detector See EMERGENCY DIAGRAM page 5.

Companionway Hatch Board or Closure A companionway board with the label
“DON’T REMOVE WHILE UNDERWAY” is provided to comply with ISO requirements
for cockpit draining and to prevent large waves from crashing down into the
cockpit, running forward and entering the interior of the boat if the
companionway door is not securely closed.
2.3 COMMISSIONING PACKAGE SAFETY ITEMS
The Commissioning Package Option, if purchased with your boat, will have:
• A copy of the U.S. Department ofHomeland Security United States Coast
Guard Navigation Rules to be on board. It also may be downloaded at:
http://www.navcen.uscg.gov/pdf/navrules/navrules.pdf
• AFirst Aid Kit
• Nine wearable USCG approved personal flotation devices (lifejackets)
and one type IV throwable PFD
• A12-Gauge Flare Kit
• A Hand-held Bilge Pump
• A Hand-held LED Flashlight
• Paper Charts
2.4 USCG REQUIRED EQUIPMENT
A Boater’s Guide to the Federal Requirements for Recreational Boats, published
by the USCG, lists required safety items. The Guide may be downloaded at:
http://www.uscgboating.org/images/420.PDF. Check state regulations where
you cruise for other requirements.
2.5 ADDITIONAL SAFETY EQUIPMENT
There are many other items of safety equipment to consider such as:
EPIRB (Emergency Position Indicating Radio Beacon) alerts search and rescue
services by transmitting a coded message and is detectable by satellite
anywhere in the world. Although the USCG doesn’t require them, EPIRBs are
essential offshore and desirable anywhere.
Inflatable Life Raft isn’t required but prudent. Rafts come in compact sizes that
can be stored in a cockpit locker. A dinghy isn’t a substitute for a life raft.
Heaving Line is handy to have for emergency or to simply trail behind the boat (if
the engines are off) attached to one of the stern cleats when people are
swimming. Polypropylene is good because it floats.
A Storm Anchor is useful as a backup and for situations when two anchors are
prudent or necessary.
2.6 SOME ADDITIONAL USCG REQUIREMENTS
In addition to the above safety equipment, the USCG requires:
Ships Registration and Documentation Carry the Vessel Registration, either the
state-issued Certificate of Number or Vessel Documentation if federally
documented with the USCG. It’s wise to have your insurance as well.
Pollution Regulation Plaques You are required to post three visible placards in
the boat that stipulate that waste must be managed; that oil discharge is
prohibited and deposit ofanyrefuse matter of anykind into the waters ofthe US
is prohibited. West Marine has such plastic placards with adhesive backs that
are available at little or no cost.
Better to just secure the companionway
slider and lid. It’s quieter,prevents
someone from being pitched below and
provides a Chart Kitnavigation surface.
---R.I.J.

2.7 FUEL SHUT-OFF VALVES
The first thing to do if there is a fuel fire or leak is stop engines, turn off ignition
and engine battery switches and close fuel shut-off valves by turning them
perpendicular to the hose. They are located in the cockpit locker, looking
forward over the generator atthe back end ofthe fuel tank. If there is fuel in the
bilges, close valves, find the source of the leak and then clean bilges.
2.8 FIRE SUPPRESSION
An automatic, heat-activated, fire suppression system is installed in the
generator compartment. It can be activated manually at the helm station. To
prevent the engines from evacuating the fire suppression agent when it
discharges, the system will shut off blowers and generator. Refer to the manual
for maintenance instruction. ( Note: No fire suppression system is installed if no
generator is present)
Hand-held fire extinguishers (see Emergency Diagram page 5 for locations) are
rated to fight type A, B & C fires. To extinguish a fire, first cut the source offuel
to the fire. In a fuel fire, turn off the fuel tank valves. In an electrical fire, turn off
the BATTERY switches.
Fire safety begins with prevention. Reduce fire risk with these guidelines:
• Don’t allow debris oroily rags to collect anywhere.
• Check bilges for oil or fuel regularly.
• Shut down unnecessary circuits when leaving the boat.
• Don’t leave heat-producing appliances or equipment unattended.
• Inspect fire suppression equipment regularly and learn how to use it.
Exhaust gas contains carbon monoxide. It’s colorless, odorless,
andlethal. Avoid inhaling. Inspect the exhaust system regularly. Idling engines
at a mooring or at a dock isn’t good for the engine and may allow gasses to
accumulate in the cockpit or cabin.
Don’t work on any mechanical orelectrical equipment unless you’re
qualified. Electrical current and moving parts are dangerous and can be lethal.
2.9 NOTICES
Denotes a reminder ofsafety practices ordirects attention to unsafe
practices which could result in personal injury or damage to the craft or
components.
Denotes a hazard that exists which can result in injury or death if
proper precautions aren’t taken.
Denotes an existing extreme intrinsic hazard that would result in high
probability of death or irreparable injury if proper precautions aren’t taken.

2.10 EMERGENCY AND THRU HULL DIAGRAM

3PROPULSION
3.1 ENGINES
The MJM3 is propelled by twin Mercury Verado 300 or 350 HP 4-stroke, in- line
outboard engines with HD heavy duty drives having either an Enertia- ECO 3-
Blade or Evolution-4 stainless steel propellers. When raised, engines are out
of the water.
3.2 ENGINE CHECKS
See “Mercury Operation & Maintenance Manual (MOMM”) provided with your
MJM. Before long trips, check hydraulic steering fluid level under the rear
cockpit seat and engine oil level by removing the top cowl.
Top Cowl Removal to access most maintenance points. To tilt the engine
closer, making this easier, use the small black AUXILIARY TILT SWITCH on the
port side of the engine just below the top cowl.
Pull up on the top cowl latch on the back of the engine.
Pull the top cowl forward and lift off.
Remove dipstick on port side ofengine to check oil, then securely reinsert.
Putting the top cowl back on is a bit tricky. Position the top cowl loosely in
place over the engine, being sure it fits on top of the rubber seal all the way
around. (MOMM says front first).
Push down on the cowl, MOMM says back half first, then front half until it
clicks into place. Make sure it’s secure bypulling upon the back of the cowl.
Don’t want this flying off underway!
Carbon Streaks rub off with a swipe of the hand when hosing down boat.

Water Separating Fuel Filters should be replaced every 100 hours or annually.
They are located on bulkheads outboard ofthe generator and aftofthe fuel shut-
off valves on top of the fuel tank.
The wire out of the bottom ofthe filter bowl is the sensor to alert that water is in
the filter. This is not usually of an urgent nature, but rather a “change at next
opportunity” event.
In-Line Fuel Filter under the engine cowl should also be replaced every 100
hours or annually. This pencil like device primarily captures fabrication debris
picked up by the fuel in the tanks or hoses. Rarely does fuel clog it. (See
MOMM pg. 76)
Check Fuel Level The primary cause of engine failure is running out of fuel.
There’s a fuel level sensor in the 250-gallon tank and read out on VESSEL
VIEW.
3.3 5 STEPS TO START
Ensure there are no lines and hoses in the water near the props.
1. Turn on the PORT & STBD ENGINE BATTERY switches at the
breaker panel inside the companionway.
2. Insert the TPS fob into its independent slot above the electrical panels.
3. Turn on both engine ignition keys at the top of the bulkhead inside
companionway where they can’t be accidentally bumped into when entering or
exiting the interior.
Don’t start the engine if people are in the water nearby.
4. Lower engines using the rocker switch on the port control handle. Ensure
the ENGINE/SHIFT CONTROL LEVERS are in neutral. The engines won’t start if
either lever is in gear.
5. S TART E NGINES , push, and immediately release the engine start button for
each engine to starboard of the wheel. Do not hold them in as process is
automatic until engine starts. If you don’t hear the engines (these are quiet
boats) look at the VESSEL VIEW DISPLAY panel to see they read 500-600 rpm
idle. Also check to see if the Joystick base rim lights up GREEN indicating that it
is active. See JOYSTICK PILOTING
The boat may move abruptly when the gear is engaged.Ensure the
boat is clear of all obstacles forward and aft. Cautiously shift to the IDLE
FORWARD position then quickly back to NEUTRAL position. Observe whether the
boat moves as you expect.
If a warning light or buzzer activates, stop the engine immediately.
Determine the cause and repair the problem before continuing to operate.
3.4 STOPPING THE ENGINES
Put ENGINE/SHIFT CONTROL LEVERS in neutral. Push the lower STOP buttons on
START/STOP Panel. The green base of the Joystick goes out and RPMs go to
“0”. Once the engines have been raised, Reverse the Start process by turning
of Ignition Keys, pulling out the TPS fob (and hiding it) then turning off the two
ENGIINE BATTERY SWITCHES.
It is unnecessary to remove the ignition keys, since theyare below and the TPS
fob is hidden ENGINE BATTERY SWITCHES are off and the cabin is locked.
Mercury FUEL FILTERS & Fuel Shut Offs
Engine Battery Switches
Engine Ignition Keys.
Engine START/STOP Buttons.

Engine work should notbe done with the engine running unless
specified by the manufacturer for a specific reason and done by a qualified
marine mechanic.Stop enginesbefore opening engine hatch.
3.5 NEW ENGINE BREAK-IN
When running the engine for the first time, frequently check oil pressure, coolant
temperature (normal is 145
o
), exhaust color, engine vibration, sounds and the
operation of indicators and gauges. Don’t run the engine at a constant RPM for
long periods of time or apply full throttle for more than about 30 seconds.
Lubrication During the first 10 hours of operation, high oil consumption is
typical. Change oil between 50 and 100 hours. Consult the MOMM for the
proper oils for the climate where the boat will be operating.
3.6 OPERATING PARAMETERS
Pay attention to the engine data on the VESSEL VIEW or displayed on the
Raymarine gS165 data bar. A significant change in oil pressure, coolant
temperature orpressure,or voltage drop should be quickly investigated before
the engine isdamaged. Data should read approximately:
• Oil Pressure: 50 psi at3000 RPM or more.
• Coolant Temperature: 145
o
F to 165
o
F
• Coolant Pressure over 3000 RPM: 15-25 psi.
• Charging: 13-14 Volts underway
While Mercury has run their engines for 300 hours straight at max RPM without
damage, a good fast cruising speed is 35-37 knots. or about 90% of max RPM at
about 5200 RPM. Listen and feel for sweet spots. If you hear abnormal sounds,
stop the engine, and inspect.
3.7 LEAVING THE BOAT
With SHOREPOWER connected - turn off all three-remote engine/generator switches. You
may also turn off the DC MAIN breaker but keep this on if you want to keep your
refrigerator operating. The charger/inverter will automatically charge all four batteries
via automatic charging relays.
If moored at dock with no shore power, simply ensure both engine switches
and generator switch is off, as well as the DC MAIN breaker is off. This will ensure
bilge pumps remain functional while other loads are turned off. If the boat is to
be dry-docked for an extended period of time with no charging, manually turn off
both the port and starboard house battery switches in both battery
compartments.
Flushing the Engines If you plan to let the boat sit for more than a few days,
MOMM advises to flush the engines by hooking up a dock hose to the flush
connector on the port side of the engines next to the auxiliary lift button and
letting it run for about 15 minutes. See MOMM page 70. A “Y” hose connector
would be helpful here to have both engines flushing at once.
A reboot can solve mysterious issues.
Electronic engine controls are
computers. Mysterious problems
emerge and may be caused byunusual
switching sequence. They can often be
fixed with a reboot. Stop the engines.
Turn everything off—shut down the
entire boat. Wait at least 10 seconds.
(My printer and router call for 25
seconds.) Then turn HOUSE BATTERY
and ENGINE BATTERY switches on (but
not the ENGINE EMERGENCY,
PARALLEL switch). Go on deck. Turn
Ignition switches on at the helm. Wait
until the engine control display shows
data and has gone through its initial
warm up. Then start the engines and
check the Joystick Control functions (IPS
& DPS).
…R.I.J

3.8 MERCURY VERADO 300 & 350 HP ENGINES
a. Top Cowl
b. Rear Cowl
c. Idle Relief Exhaust
d. Lower Cowl Chaps
e. Anti-Ventilation Plate
f. Propeller Shaft
g. Low Water Intake Holes
h. Water Intake Holes
i. Trim Guide Plates
j. Pedestal
k. Engine Flush
l. Auxiliary Lift Switch

MJM
3 power steering rotates outboards
through a 20° arc. The steering is more
positive and immediate than deflecting
prop wash off a rudder from a propeller
on a straight shaft and far more positive
than directing a jet ofwater at water
1Ritchie Compass
2Chartplotter
3Mercury VesselView
4 Console Switch Panel
5 12v & USB outlets
6Garmin MFD
7Seakeeper Control Panel
8 Searchlight Control
9 Mercury Joystick Piloting
10 Autopilot Button
11 ZipWake Auto Trim
12 Engine/Shift Control Levers
13 Engine Stop Lanyard
14 Pilothouse Light Switches
15 Bilge Pump Controls (2)
16 Generator Start/Stop
17 Engine Start/Stop
18 Windlass Up/Down
19 High Water Alarm
20 Fire Suppression Alarm
21 Bow Thruster Controller
22 Mercury Diagnostics Port
4INSTRUMENTS AND CONTROLS
The following material includes selected summaries of the Volvo Penta
Operator’s Manual (VPOM) included in the binders. Please read the entire
manual for safety instructions. There are frequent page references to the VPOM
in the following paragraphs.
4.1 HELM STATION
Most of the boat’s controls and instruments are at the helm station. Below is the
layout on Calypso #31. Helm layout may change. The respective circuit breakers
must be on for the equipment to operate.
Aesthetic Riser (Option) This 4” high removable riser improves visibility for
someone shorter than 5’5”. It locks into place with a barrel bolt and can be
stored in one of the settee lockers.
passing the hull.
…R.I.J.

4.2 MERCURY FEATURES AND CONTROLS (PAGES 56 -77)
4.3 JOYSTICK PILOTING
The Mercury Joystick Piloting functions very much like the
Volvo Penta IPS, except it’s more automatic.
MOVE Engine Controls to Neutral. The ring at the base of
the JOYSTICK lights up Green to show that it’s active.
TWIST Joystick to turn the boat or LEAN Joystick in
direction desired or do both at same time While PUSHING
Joystick forward or aft… without going back to center.
PUSH ADJUST “+” for 100% torque (shows 2 lights).
PUSH “-“for 50% torque (1 light). “+” is recommended.
ENGAGE Engine Controls to deactivate.
4.3.1 AUTOPILOT Press boat outline button (Lower Left of
Joystick) to engage Autopilot.
TAP Joystick port or starboard to alter course by 1-degree
increments. Beep confirms.
TWIST and RELEASE to alter AP Course in 10-degree increments.
In an emergency, you can forcibly TURN the wheel to disengage
the autopilot
4.3.2
WAYPOINT TRACK Press “Tri-circle” diagram on
starboard side of joystick to set course to WP-1 of course
plotted on Raymarine display. Upon arrival at WP-1, there
will be an audible beep. Push “Tri-circle” button again to
set course to WP-2, etc.
4.3.3 SKYHOOK PUSH “SKYHOOK” button to hold heading
and GPS position. GREEN necklace turns BLUE to indicate
it is active. Seakeeper gyro helps greatly here, too, so
waves don’t readily throw the bow around.
4.3.4 BOWHOOK With SKYHOOK activated, PUSH “Bowhook”
on Vessel View screen to hold GPS position but unlock
compass heading allowing boat to point into direction of
wind/current so engines don’t have to work so hard to keep
boat in position. See illustration at right.

Modern marine navigation electronics are
subjects beyond the scope of this guide.
Extensive manuals are in the binders.
https://raymarine.app.box.com/s/rb0rjilw
4.4 DISPLAYS
The Mercury VESSELVIEW 703 DISPLAY panel allows the operator to perform
settings and choose information to be displayed. (Refer to the adjacent
VessleView 703 Quick Guide) This panel is activated when the engine ignition
keys are turned on.
The chartplotter and VHF radio are activated by turning on the ELECTRONICS
breaker on the 12V ELECTRICAL PANEL. Turn on any other equipment that you plan
to use that have independent switches. Verify that all the navigation
instruments are functioning as expected before you leave the dock.
Boat Speed over ground (SOG) may be displayed in the bar at the top of the
MULTI FUNCTION DISPLAY (MFD). Or on VESSELVIEW. SOG is derived from
tracking GPS positions rather than a paddle wheel or sonic device. SOG from
the same source may be chosen for display in large digits on the
MULTIFUNCTION display. Wind and current affect speed over ground and SOG
isn’t the same as speed through the water. If you learn to approximate speed
through the water from RPM on the tachometer, you can compare it to SOG to
determine the effect of wind and current.
4.5 COMPASS HEADING AND CALIBRATION
The yacht is equipped with three devices that display bearing:
1. The RITCHIE COMPASS on the dash
2. A Digital compass
3. The GPS COG (Course Over Ground) on the MFD or VESSELVIEW
When you are underway, these three sources should agree within a degree or
so. If they don’t, employ a professional compass adjuster. The DIGITAL
COMPASS SENSOR is located aft (a puck) on the hard top.
Don’t store ferrous items such as tools near the DIGITAL COMPASS
SENSOR, or on the dash by the RITCHIE COMPASS.
TRIMMING THE MJM3
Trimming an MJM3 is somewhat of an art form as there are 3 WAYS to do so and they are
inter-related. The boat seems to run fine just trimming the outboards with the auto
trim systems off.
4.5.1 ENGINE TRIM WITH no side wind or leaning of the boat to port or starboard,
there’s not much more necessary than adjusting a comfortable bow up or down angle
using the buttons on the ENGINE CONTROL LEVERS to change the angle of the
outboards.
4.5.2 MERCURY ACTIVE TRIM (See following description) can automatically do the same,
adjusting the outboards to your boats loading and your ride preference.
4.5.3 ZIPWAKE AUTO TRIM On the 12v BREAKER PANEL, Turn TRIM TAB breaker on.
This activates the ZIPWAKE automatic or manual leveling system. See the
attached ZIPWAKE Operator’s Quick Guide. The degree to which the interceptor
blades are lowered is shown by the two angled bars at the bottom.
It’s possible to have dueling trim systems. If the boat is running
level, and the ZIPWAKE does not respond to raise the bow higher in seas, you’ll
note that blades are fully retracted, so engines must be raised to correct trim.
TRIM TAB CONTROL panel
The Lighthouse Operating Instructions
are also available on the RAYMARINE
MFD . You may also download it at:
kwla2h16k4d9iuf7tzbw2bs7
if you aren’t familiar with navigation,
please learn. Electronic equipment can
fail. Have paper chart back-ups and
learn dead-reckoning skills.
…R.I.J.