mjm yachts 40z Downeast User manual

401-862-4367 .
[e-mail]
November 2012
Dear 40z Owner:
Congratulations on becoming Captain and Owner of the world’s best built and most fuel efficient yacht of its size.
The enclosed copy of the 40z Owner’s Manual should further contribute to your enjoyment and proficiency afloat.
This manual was created jointly with Zurn Yacht Design, Boston BoatWorks and MJM Yachts. Our experience
with the first 145 boats (all models included) has been incorporated to make this manual as useful and relevant
as possible. Keep in mind that there maybe some variances such as location of the breakers on the panel. And, from
time-to-time we will change specifications to keep pace with changes made to improve the boat.
When addressing a problem with a specific piece of equipment, this 40z Owner’s Manual is to be regarded only as a
preliminary source of information. The equipment manufacturer’s own manual with trouble-shooting procedures,
etc. is the primary source and authority.
A Small Craft Owner’s Manual accompanies, and forms part of, this 40z Owner Manual. This booklet has universal
handling and operating tips worth reviewing.
This 40z Owner’s Manual is designed to be a living document, not only for builder updates but for your own use and
record. Each boat is provided with a copy of the current Manual organized in a STAPLES “Mini-Ring” type binder
that allows you to add pages as needed.
One of the great advantages of purchasing a series-built or semi-custom design is that owners have the benefit of
learning from one another. So, with your continued input and comments we can keep adding useful information and
helpful hints to this manual.
Part of the ISO CE Mark Certification Program is confirmation by the owner that the manual has been received.
Please sign the extra page No. 3 included in the Manual as a receipt and return it in the stamped envelope provided.
Best wishes for fair winds and sunny skies. On behalf of the builder and designer, we are most appreciative, and I
am particularly honored, that you have chosen the 40z.
Robert L. Johnstone
Founder & CEO
Note: This manual is published in accordance with ISO standard 10240:1995E Small Craft - Owner’s Manual

40z Owner’s Manual
LOA - Length Overall Including Swim Platform & Bow Roller 44.3 ft.
LOD - Length On Deck 40.0 ft
Beam – Trailerable Max Width 12.0 ft.
Draft – Max Draft with IPS or Stern Drives Down 3.3 ft.
Displacement – !Load 18,900 lbs.
Fuel Tankage -In 2 175 gallon Tanks 350 gals.
Fresh Water Tankage – Including Hot Water Tank 112 gals.
Holding Tank 25 gals.
Air Height over Water w/Radar Mounted on Hard Top 10 ft.

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CE CERTIFICATION
CERTIFICATE NO.
ADDRESS:
WEBSITE:
CLASSIFICATION:
CAPACITY
PERSONS:
PERSONS/GEAR:
--------------------------------------------------------------------------------------------------------------------------------------------
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.
Signature
Printed Name
Boat Name
Address
City, State, Zip
Tel.
E Mail
NOTE: PLEASE SIGN ONE OF THE TWO COPIES OF THIS PAGE AND RETURN IT IN THE
ATTACHED STAMPED ENVELOPE TO: MJM YACHTS at 89 Pinckney Street, Boston MA 02114.
Denotes an extreme intrinsic hazard exits which would result in high probability of
death or irreparable injury if proper precautions are not taken.
Denotes a hazard exists which can result in injury or death if proper precautions
are not taken.
Denotes a reminder of safety practices or directs attention to unsafe practices
which could result in personal injury or damage to the craft or components.
- 4 -
REGISTRATION #:
International Marine Certification Institute
Rue Abbe Cuypers 3
B-1040 Bruxelles, Belgique
[phone]
ISO CE Mark Design Category A Ocean (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 in excess of Beaufort
Force 8, but excluding abnormal conditions, e.g. hurricanes.
Maximum 16 Persons
Maximum Load 3518 kg
Hull #
Date
AUTHORITY:
BBBW003
PHONE:
www.imci.org
NAME:
ADDRESS:
MOBILE

TABLE OF CONTENTS
CHAPTER 1
1.1
1.2
1.3
1.4
1.5
1.6
CHAPTER 2
2.1
2.2
2.3
2.4
CHAPTER 3 PROPULSION SYSTEM
INTRO – TOP 10 REASONS of ENGINE FAILURE
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
CHAPTER 4 STEERING SYSTEM
4.1 SYSTEM DESCRIPTION
4.2 JOYSTICK DOCKING
4.3 HELM STATION PICTURE
4.4 SWITCH PANEL
4.5 TRIM TABS
4.6 AUTOPILOT OPERATION
4.7 WINDSHIELD WIPERS
4.8 SPOTLIGHT
4.9 HELM POSITION RISER
CHAPTER 5 FUEL SYSTEM
5.0 GENERAL
5.1
5.2
5.3
5.4
CHAPTER 6 ELECTRICAL SYSTEM
6.0 GENERAL
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
- 5 -
CHAPTER 7 FRESHWATER SYSTEM
7.0 GENERAL
7.1
7.2
7.3
7.4
CHAPTER 8
8.1
8.2
CHAPTER 9
9.1
9.2
9.3
9.4
CHAPTER 10 EXTERIOR EQUIPMENT
10.1
10.2
10.3
10.4
10.5
10.6
10.7
CHAPTER 11 INTERIOR EQUIPMENT
11.1 MARINE HEAD SYSTEM
11.2 REFRIGERATION
11.3 COOKTOP
11.4 MICROWAVE/OVEN
11.5 AIR-CONDITIONING
11.6 HEATING SYSTEM
11.7 STEREO & CD CHANGER
11.8 SIRIUS SATELLITE RADIO
11.9 TELEVISION
11.10 SATELLITE TV RECEIVER
CHAPTER 12 ROUTINE MAINTENANCE
12.1 SCHEDULE
12.2 FLUIDS
CHAPTER 13 SEASONAL MAINTENANCE
CHAPTER 14 FIGURES
14.1 EMERGENCY DIAGRAM
14.2 DC SCHEMATIC (12 VOLT)
14.3 AC SCHEMATIC (120 VOLT)
14.4 SYSTEMS DIAGRAM
14.5 TRAVEL LIFT SLING DIAGRAMS
14.6 BOAT LIFT OFFSETS
14.7 TRUCKING CHECKLIST
CHAPTER 15 LIMITED WARRANTY
CHAPTER 16 QUICK START
OPERATION
GENERAL
QUICK START GUIDE
OPERATING PROCEDURES
NAVIGATION
TOWING
HAULING OUT
SAFETY EQUIPMENT
GENERAL
FUEL SHUT-OFFS
FIRE
FIRST AID
GENERAL
COOLING
ZINCS & CORROSION
AIR INTAKES
ENGINE DISPLAY PANEL
THROTTLE/SHIFT LEVER
STARTING
ALARMS
STOPPING
OPERATION
FUEL SHUT-OFFS
FILLING
RACOR FUEL FILTERS
FUEL CONSUMPTION & LOG
DC SYSTEM
AC SYSTEM
GENERATOR
INVERTER
REVERSE POLARITY
ELECTROLYSIS & ZINCS
BONDING
ELECTRICAL SAFETY
FUSE LOCATIONS/SPECS
FILLING
FRESH WATER PUMP
HOT WATER
WATER PURIFIER
RAW WATER SYSTEM
GENERAL
ENGINE RAW WATER
GRAY WATER SYSTEM
GENERAL
GRAY WATER SUMPS
BILGE PUMPS
COMMON DRAINS
GENERAL
ANCHOR WINDLASS & WASHER
PILOTHOUSE CURTAINS
PRIVACY & SUNSCREEN CURTAINS
TRANSOM DOOR & SEAT
STIDD SEAT POSITIONING
WINDSHIELD OPERATION
LUBRICATION