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mjm yachts 35z Owner's Manual

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z O W N E R S G U I D E

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Summary of Contents for mjm yachts 35z

  • Page 1 z O W N E R S G U I D E...

  • Page 2: Boat Information

    BOAT INFORMATION MODEL 35z Downeast HIN NUMBER EOU35z______________________ DESIGN PATENT US D475 338S (3 June 2003) DELIVERY DATE _______________________________ AIS MMSI NO. _______________________________ REGISTRATION NO. ________________________________ ENGINES Mercury MODEL Verado ________________________________________ SERIAL NUNBERS. ______________________ & __________________________ DRIVES Mercury MODEL 1307V23LY & 1307V24LY PROPELLORS ___________________________________________________ MJM YACHTS LLC Robert L. Johnstone PHONE 401-862-4367 Mobile EMAIL info@mjmyachts.com ADDRESS 39 Washington St., Newport RI 02840 ZURN YACHT DESIGN Doug Zurn PHONE 781-639-0678 ADDRESS 89 Front St., Marblehead MA 01945 BOSTON BOATWORKS LLC...
  • Page 3 Dear 35z Owner Congratulations on becoming an owner of an MJM 35z. We’re dedicated to making it the world’s best in class. As you read this guide and share cruising adventures, we hope you’ll discover our mission has been accomplished.
  • Page 4 Insert and turn ON ENGINE KEYS high up under companionway bulkhead (where they can’t be accidentally broken or switched off). Listen for acknowledging beep and look for Green “Systems OK” Light on Vesselview. (Key Code 35z #1 is “996”) SELECT “Engine Page” on VesselView and check engine battery voltage in top center.
  • Page 5 CE CERTIFICATION CERTIFICATE NO. BBBW005 AUTHORITY: ADDRESS: International Marine Certification Institute Rue Abbe Cuypers 3 B-1040 Bruxelles. Belgique PHONE +32-2-741-2418 WEBSITE www.imci.org ISO CE Mark Design Category B Offshore (EC Directive 94/25/EC) for craft designed for CLASSIFICATION 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.
  • Page 6 CE CERTIFICATION CERTIFICATE NO. BBBW005 AUTHORITY: ADDRESS: International Marine Certification Institute Rue Abbe Cuypers 3 B-1040 Bruxelles. Belgique PHONE +32-2-741-2418 WEBSITE www.imci.org ISO CE Mark Design Category B Offshore (EC Directive 94/25/EC) for craft designed for CLASSIFICATION 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.
  • Page 7 MJM 35z LOA: Length Over-All including engines down & bow roller ....37.9 ft. LOD: Length on deck (LOD ..............35.7 ft. Beam (Maximum width on trailer) ............11.0 ft. Maximum Trailer weight (full tanks) ..........15,000 lbs. Draft with Engines (Up) Down ……………………………………...(1.8 ft.) 2.8 ft.

  • Page 8: Purpose And Limitations

    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.

  • Page 9: Safety And Some Uscg Requirements

    SAFETY and some USCG REQUIREMENTS 2.1 B INDER ANUALS 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.
  • Page 10 A companionway board with the label Companionway Hatch Board or Closure Better to just secure the companionway is provided to comply with ISO requirements “DON’T REMOVE WHILE UNDERWAY” slider and lid. It’s quieter, prevents for cockpit draining and to prevent large waves from crashing down into the someone from being pitched below and cockpit, running forward and entering the interior of the boat if the provides a Chart Kit navigation surface.

  • Page 11: Fuel Shut - Off Valves

    2.7 F ALVES 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 at the back end of the fuel tank.

  • Page 12: Thru Hull Diagram

    2.10 E MERGENCY AND IAGRAM First Aid Kit Waste Discharge Thru Hull Electric Bilge Pump 1 Seakeeper 3 Manual Bilge Pump Shore Power Breakers Fuel Shut-off Valves on Tank Seakeeper & AC Raw Water Strainer & Thru Hull Generator Raw Water Groco Strainer &...

  • Page 13: Engine Checks

    3.1 E NGINES The MJM 35z is propelled by twin Mercury Verado 300 or 350 HP 4-stroke, 6- cylinder in-line outboard engines with HD heavy duty drives having either 3 blade Enertia-ECO 3-Blade or 4-blade Evolution-4 stainless steel propellers. When raised, engines are out of the water.
  • Page 14 should be replaced every 100 hours or annually. Water Separating Fuel Filters are located on bulkheads outboard of the generator and aft of the fuel shut- They off valves on top of the fuel tank. The wire out of the bottom of the filter bowl is the sensor to alert that water is in the filter.
  • Page 15 It is unnecessary to remove the ignition keys, since they are below and the TPS fob is hidden ES are off and the cabin is locked. ENGINE BATTERY SWITCH Engine work should not be done with the engine running unless specified by the manufacturer for a specific reason and done by a qualified A reboot can solve mysterious issues.
  • Page 16 3.8 M 300 & 350 HP E ERCURY ERADO NGINES 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.

  • Page 17: Instruments And Controls

    INSTRUMENTS AND CONTROLS The following material includes selected summaries of the Volvo Penta 35z power steering rotates outboards Operator’s Manual (VPOM) included in the binders. Please read the entire through a 20° arc. The steering is more manual for safety instructions. There are frequent page references to the VPOM positive and immediate than deflecting in the following paragraphs.

  • Page 18: Features And Controls

    FEATURES AND CONTROLS SPECIAL DIGITAL THROTTLE AND SHIFT (DTS) FEATURES The DTS system features several alternate operational modes for the electronic remote control (ERC) levers. Any of the listed features can operate simultaneously. 55232 Dual engine ERC Item Control Function Trim control Raises and lowers the engines for best efficiency, or (handle)
  • Page 19 FEATURES AND CONTROLS Item Control Function Decreases brightness settings for CAN pad, – VesselView and SmartCraft gauges. Enables the throttle and shift functions of both 1 LEVER engines to be controlled by the port lever. Turns off or on the auto‑synchronization feature. SYNC Refer to Sync.
  • Page 20 FEATURES AND CONTROLS To engage throttle only mode: 1. Place both ERC levers in neutral. 2. Press the THROTTLE ONLY button. The button light will turn on and the neutral lights will blink. 3. Place either ERC lever into gear. The warning horn will beep each time the levers are moved in and out of gear while in throttle only, but will remain in neutral.

  • Page 21: Power Trim Operation

    FEATURES AND CONTROLS Power Trim and Tilt The outboard has a trim/tilt control called power trim. This enables the operator to easily adjust the position of the outboard by pressing the trim switch. Moving the outboard in closer to the boat transom is called trimming in or trimming down.
  • Page 22 4.2 M 56 -77) ERCURY EATURES AND ONTROLS PAGES OYSTICK ILOTING The Mercury Joystick Piloting functions very much like the Volvo Penta IPS, except it’s more automatic. MOVE Engine Controls to Nuetral. 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…...
  • Page 23 FEATURES AND CONTROLS • Generally improve the ride in choppy water. • In excess, can lower the bow of some boats to a point where they begin to plow with their bow in the water while on plane. This can result in an unexpected turn in either direction (called bow steering or oversteering) if any turn is attempted, or if a significant wave is encountered.

  • Page 24: Manual Tilting

    FEATURES AND CONTROLS 3. Disengage the tilt support bracket, by raising the outboard up and rotating the tilt support lever up. Lower the outboard. Tilt support lever Tilt support bracket 28922 MANUAL TILTING If the outboard cannot be tilted using the power trim/tilt switch, the outboard can be manually tilted.

  • Page 25: Auxiliary Tilt Switch

    FEATURES AND CONTROLS AUXILIARY TILT SWITCH The auxiliary tilt switch can be used to tilt the outboard up or down using the power trim system. 28927 SHALLOW WATER OPERATION When operating your boat in shallow water, you can tilt the outboard beyond the maximum trim range to prevent hitting bottom.

  • Page 26: Operation

    OPERATION Setting Trim Angle While Running Engine at Idle Speed The exhaust relief hole on the outboard can become submerged on some boats if the engine is trimmed full in while running at idle speed. This may result in exhaust restriction, rough idle, excessive smoke, and fouled spark plugs. If this condition exists, trim outboard up until exhaust relief hole is out of the water.

  • Page 27: Compass Heading And Calibration

    4.6 T RIMMING THE Trimming a 35z 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 tirim systems off.
  • Page 28 VesselView Quick Guide Please reference & download a copy of the Users Manual at: www.mercurymarine.com/vesselview Display Controls X Key - Press once to exit a dialog, to Touch Screen return to previous menu level and to Home Key - Press once to display the remove the cursor from the panel.
  • Page 29 VesselView Quick Guide Please reference & download a copy of the Users Manual at: www.mercurymarine.com/vesselview Engine Page Engine Speed Battery Trim Fuel Note: Pressing in the center, on one of these screens will provide access to a deeper level that displays only the selected information.

  • Page 30: How It Works

    OPERATION Introduction to Active Trim Active Trim is Mercury Marine’s patented GPS‑based automatic trim system. This intuitive, hands‑free system continually adjusts engine or drive trim for changes in operating conditions to improve performance, fuel economy, and ease of operation. It responds to boat maneuvers with precision and delivers a better overall driving experience.
  • Page 31 OPERATION BUILT-IN GPS This device includes a built‑in GPS antenna used to determine vessel speed. The GPS has three start‑up modes: • Cold Start ‑ If vessel battery power was turned off (using a battery switch), GPS will take 30–60 seconds to acquire a signal. •...

  • Page 32: System Status Light

    OPERATION SYSTEM STATUS LIGHT • A constant amber light indicates that the system is working normally. • A flashing amber light indicates that the Active Trim system is not controlling trim (user override). Press the ON/RESUME button to resume Active Trim control. •...
  • Page 33 OPERATION TRIM PROFILE ADJUSTMENT Use the Active Trim keypad Up Arrow and Down Arrow buttons to adjust the selected profile to the most efficient running attitude to compensate for changes in boat loading (passenger or gear distribution, changes in ballast or fuel tank levels), weather, propping, and operator preference.

  • Page 34: Installation

    INSTALLATION NOTE: The system can be returned to the setup mode if necessary by simultaneously pressing and holding the ON/RESUME + Up Arrow buttons for five seconds. 61873 ON/RESUME button OFF button Trim profile indicator Trim profile adjust Up Arrow Trim profile adjust Down Arrow 5.

  • Page 35: Automatic Mode

    OPERATOR´S QUICK GUIDE AUTOMATIC MODE Pitch Roll Status Angle Angle Roll Level Boat Speed Pitch Offset Interceptor Interceptor Extension Feedback Press and hold: Auto Pitch & Roll Control on/off Press: Auto Roll Control off/on Roll Level Pitch Offset Save Pitch Offset + Bow Down 0-99%...

  • Page 36: Manual Mode

    OPERATOR´S QUICK GUIDE MANUAL MODE Pitch Roll Status Angle Angle Boat Speed Interceptor Feedback Interceptor Steering STEER Extension Mode Steering Press and hold: System on/off Mode on/off Press: Enter Menu Roll Control Pitch Control + Bow Down List Trim Turn - Bow Up PORT STBD...

  • Page 37: Multi Function Dislay (Mfd)

    4.7 S EARCHLIGHT settings: breaker on. Turn on the light by BREAKER PANEL SEARCHLIGHT TRIM TAB CONTROL panel depressing the on/off button. The SEARCHLIGHT is a powerful LED appliance that may be operated with a joystick from the helm. The LEDs draw less power (only 2.8 amps at 13.8V) than previous incandescent devices.

  • Page 38: Anchor Lights

    Windshield Wipers One push to the on position will start three motors in synchronized interval. • One more push to momentary will run three motors slow speed • synchronized. One more push will run three motors fast speed synchronized. One more push starts from interval and so on. WINDSHIELD WIPER switch •...

  • Page 39: Electrical Systems

    Calder and Boat Owner’s Illustrated Electrical Handbook by Charlie Wing. 5.2 E LECTRICAL OWER The MJM 35z includes both 12-volt direct current (DC) and 120-volt alternating current (AC). Most of the boat’s electrical devices use 12V DC. It’s 12-Volt DC stored in AGM absorbed-glass mat no-maintenance batteries as...

  • Page 40: Shore Power

    5.3 S HORE OWER The single 50 foot, 30 amp shorepower cord is plugged in to outboard of the cockpit seat to port and provides SHORE POWER INLET power to breakers on the 120V AC electrical panel The batteries will accept a charge from 120V shore power Charging SHORE POWER &...
  • Page 41 5.6 T 12V DC P ANEL The 12V DC panel includes circuit breakers for all 12V DC equipment except the 24-hour circuits that are permanently connected to the HOUSE . The breakers are lighted and labeled. Spares are available for BATTERY future installations.

  • Page 42: House Batteries

    5.7 T 120V AC P ANEL panel receives power from the or from 120V AC INVERTER/CHARGER or from the Westerbeke . It also includes SHORE POWER GENERATOR breakers for loads that can be handled by the inverted HOUSE BATTERIES to 120V AC by the Vitctron I NVERTER/CHARGER When the is connected:...
  • Page 43 5.8 W 3.5 SBCG G ESTERBEKE ENERATOR P T I O N The Westerbeke Operator’s Manual is included in the binders. The daily pre-start checklist : Pre-Start Check List 1. Close seacock, clean the sea strainer (the cap should be hand tightened) and reopen the seacock.
  • Page 45 GASOLINE SBCG 60Hz GENERATOR SBCG 50Hz 17% More Power and Multiport EFI 3.5 SBCG Marine Gasoline Generator 3.5 SBCG Marine Gasoline Generator Compact, Lightweight, Powerful Simple Installation The 3.5 SBCG is the most compact 3.5kW The 3.5 SBCG is a simple “plug & play” genset. gasoline generator available.

  • Page 46: Specifications

    SBCG 60Hz SBCG 50Hz Generator Design DESIGN: Brushless, two-pole. TEMPERATURE RISE: Within NEMA MG1-22.40 operating at full load. VOLTAGE REGULATION: Standard +/- 5% no load to full load. COOLING: Molded centrifugal blower, direct connected. FREQUENCY REGULATION: .7 Hz (1%) no load to full load. ELECTROMAGNETIC INTERFERENCE LEVEL: Exceeds requirements INSULATION: Class “H”...

  • Page 48: Victron Inverter /Charger

    5.10 V ICTRON NVERTER HARGER Under normal circumstances there is no need for adjustment other than switching the INVERTER on at the AC Panel and the toggle at the PHOENIX CONTROL to on to invert 12v DC Battery power to 120V AC power…or to when 120V is sourced from SHORE POWER or GENERATOR.

  • Page 49: Water Systems

    WATER SYSTEMS 6.1 F RESH ATER settings: breaker on. BREAKER PANEL FRESH WATER PUMP Fresh water is supplied from two interconnected 25-galllon water tanks under pilothouse settees, which are filled through a fitting on the starboard side deck. No fresh water gauge is needed as you can readily see the level in the tanks.

  • Page 50: Water Purifier

    There is no specified periodic maintenance, but it’s wise to Inspect connections and clamps periodically. If you don’t get hot water from the immersion heater, press the reset button under the white cover at the right side of tank. See sidebar and the Indel Isotemp Owner’s Manual in the binders.
  • Page 51 There are tw0 automatic ELECTRIC BILGE PUMPS. They are Bilge Pumps located: Aft in the SEAKEEPER compartment • Aft in the central cockpit compartment at the transom • They are wired directly to the bank so they function even HOUSE BATTERY if all the battery switches are off.

  • Page 52: Seakeeper Gyrostabilizer (Option)

    SEAKEEPER GYROSTABILIZER (Option) is a 550 lb. sphere that spins up to 8,450 RPM. It’s SEAKEEPER anchored to a reinforced structure low in the boat to resist roll. Following is a summary of the Seakeeper 3 Gyrostabilizer (GYRO) operation. Please review the details of operation and the safety notices in the Seakeeper Operation Manual in the binders.
  • Page 53 Product: Document #: Rev: Page: OPERATION   MANUAL SEAKEEPER 3 90379 1 of 10 Section 2: SYSTEM OPERATION     Display Screens: Overview 1) When 12 VDC power is applied to the Seakeeper, the display will power up and initialize. The splash screen will be displayed.
  • Page 54 Product: Document #: Rev: Page: OPERATION   MANUAL SEAKEEPER 3 90379 2 of 10 Section 2: SYSTEM OPERATION     Seakeeper Stabilize On/Off. The button will change from grey (Stabilize Off) to blue (Stabilize On) Home screen view. These buttons toggle home screen between the Roll Angle Gauge and the Roll Angle Graph as shown below.
  • Page 55 Product: Document #: Rev: Page: OPERATION   MANUAL SEAKEEPER 3 90379 3 of 10 Section 2: SYSTEM OPERATION     The menu bar is used to navigate between pages. From left to right, the available pages are home, settings, information, service and alarm history. The selected page is highlighted in blue on the menu bar.
  • Page 56 Product: Document #: Rev: Page: OPERATION   MANUAL SEAKEEPER 3 90379 4 of 10 Section 2: SYSTEM OPERATION     Adjust the sleep timer from 1 minutes to 60 minutes or on all of the time using sleep time slider. Touching the screen will wake the display up after it has gone to sleep. Change the sign of the roll angle value displayed in the roll angle gauge so the gauge matches the motion of the boat.
  • Page 57 Product: Document #: Rev: Page: OPERATION   MANUAL SEAKEEPER 3 90379 5 of 10 Section 2: SYSTEM OPERATION     7) The service page displays operating information from the Seakeeper. 8) The alarm history page shows what alarms have occurred in the past and the associated run hours.
  • Page 58 Product: Document #: Rev: Page: OPERATION   MANUAL SEAKEEPER 3 90379 6 of 10 Section 2: SYSTEM OPERATION     Start-up 1) Make sure high current and low current DC inputs to the gyro are turned on. 2) When the low DC power is turned on the Display will initialize and the Home screen will appear.
  • Page 59 Product: Document #: Rev: Page: OPERATION   MANUAL SEAKEEPER 3 90379 7 of 10 Section 2: SYSTEM OPERATION     Stabilization To stabilize the boat after Seakeeper is on and above the minimum operating speed: 1) Press the stabilize button. The button will turn blue indicating that the Seakeeper is stabilizing the roll motion.

  • Page 60: Equipment, Appliances And Finishes

    EQUIPMENT, APPLIANCES and FINISHES 8.1 A NCHOR INDLASS settings: switch, FRESH WATER PUMP BREAKER PANEL HOUSE BATTERY breaker on. WINDLASS It’s prudent to have the engine or running when using the GENERATOR windlass; it draws considerable battery power from the HOUSE BATTERIES To retrieve the anchor, use the engine to move the boat over the anchor, not the windlass;...

  • Page 61: Privacy /Sunscreen Curtains

    8.4 P RIVACY UNSCREEN URTAINS PTION The optional provide privacy so the PRIVACY/SUNSCREEN CURTAINS pilothouse can serve as an additional stateroom. The two large side curtains roll up in place. The other curtains roll up in a carry bag. The aft and windshield curtains hook up inside. An advantage of inside curtains is that they don’t get dirty or need storage when wet from dew when departing in the morning.

  • Page 62: Ice Maker

    OOKTOP settings: breaker on. The in the BREAKER PANEL COOKTOP COOKTOP galley requires 120V AC from , the or the SHORE POWER 1 GENERATOR . The has flush-mount, pop-up, heat-resistant rubber INVERTER COOKTOP potholders. You must push on them for several seconds for them to respond.

  • Page 63: Vacuum Flush Head System

    8.10 V ACUUM LUSH YSTEM settings: DC BREAKER PANEL FRESH WATER PUMP breaker HEAD breaker on. Press the DRY FLUSH switch down at right to empty dry…or up to add wate until desired water level is achieved. (It will shut off automatically to avoid overflow.) Press the Left NORMAL switch down for a moment, then release it.
  • Page 64 8.12 F INISHES The 35z hull is painted with Awlcraft 2000 color and three coats Hull paint of clear Awlcraft. Awlgrip states that while it doesn’t hurt to wax it, it doesn’t help and can create a maintenance problem.
  • Page 65 DESCRIPTION MAKE MODEL Refrigerator - Cabin Vitrifrigo DW70 RXP4-EF-2 Cooktop - Ceramic, 1 Burner Kenyon B41573 Electric Grill (Service Bar) Kenyon B70050 Microwave Frigidaire FFCM0934LS Refrigerator-Bar (Not Shown) Vitrifrigo C62IXD4-F Icemaker - Bar Vitrifrigo IMXTIXN1-F Central Vac Dirt Devil CV1500 Air Extraction Fan - 4"...
  • Page 66 DESCRIPTION MAKE MODEL Pump - Sump w/ Tank Rule 98A-12 Thru-Hull - Bilge Water, Auto 1-1/8" Marine Town (BUILDER SPEC) Thru-Hull - Bilge Water, Manual 1-1/2" Marine Town (BUILDER SPEC) Thru-Hull - Sump, 3/4" Marine Town (BUILDER SPEC) - RESERVED - - RESERVED - - RESERVED - Toilet...
  • Page 67 Promariner Galvanic Isolator 30A ProSafe FS30 22034...

  • Page 69: Fuel Consumption Log

    35z Owner’s Guide 9.15 F ONSUMPTION Hours Engine Since Gals To Date Location Hours Last Fill Fill Comment...

  • Page 70: Warranty

    35z Owner’s Guide E. Dealers. The name and address of Authorized 9.16 B OSTON OATWORKS IMITED Dealers is available from the Manufacturer. The ARRANTY Manufacturer doesn’t authorize the Dealer, or any Manufacturer's Sole and Limited Warranty for other person, to assume for the Manufacturer any...
  • Page 71 35z Owner’s Guide H. Warranty Claims. To make a claim under this Boating Safety Act. Should you sell the Vessel, the Manufacturer recommends that your buyer also fill warranty you must do the following a. Report the defect to the Manufacturer or Authorized Dealer or a Warranty Registration Card.

  • Page 72: The Mjm Team

    THE MJM TEAM Before we end, we’d like you to know the remarkable people, recognized throughout the yachting world, who create MJM Yachts. It’s a team that has, in its young life, received many awards. The 50z received the AIM Publishing Group’s 2014 Boat of the Year for the “Best 50 Foot Plus Down East Cruising Design”...

  • Page 73: Scott Smith

    The MJM Team – 35z Owner’s Guide page 50 10.4 S COTT MITH Scott is a founder of Boston BoatWorks. He studied bio-medical engineering at Boston University and worked in the financial industry at Boston Financial Data Services and Shawmut Bank. He formed Boston BoatWorks with Mark Lindsay to combine his passions as a life-long sailor, sailing competitor, technophile and entrepreneur.

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