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401-862-4367   .  

[email protected]

 

 
  

                              May 2015 

                               Dear 50z Owner:                          

  
Congratulations on becoming Captain and Owner of the world’s best built and most fuel efficient yacht of its size.   
This 50z 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 190 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 or custom additions to your boat which were installed after 
printing of this manual. 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 50z 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. And starting with the 50z , in addition to two large binders with hard copies of 
equipment manuals, you will find a CD disc with a digital copies you can access on your computer, carry around with 
you and consult when convenient… like when commuting on AMTRAK instead of reading the morning paper. 
  
A Small Craft Owner’s Manual

 

accompanies, and forms part of, this 50z Owner Manual. This booklet has universal 

handling and operating tips worth reviewing.   

  
This 50z 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 50z.  

 

Robert L. Johnstone

  

Founder & CEO 
  

 

Note: This manual is published in accordance with ISO standard 10240:1995E Small Craft - Owner’s Manual  

Summary of Contents for 50z Downeast

Page 1: ...n access on your computer carry around with you and consult when convenient like when commuting on AMTRAK instead of reading the morning paper A Small Craft Owner s Manual accompanies and forms part o...

Page 2: ...1 SERIAL NO 3940016632 3940016988 3940016989 PROPELLOR T6 Props Part 3861104 MJM YACHTS LLC Robert L Johnstone PHONE 401P862P4367 Mobile EMAIL mjmyachts verizon net ADDRESS Box 8 Newport RI 02840 ZUR...

Page 3: ...11 Triple I 0 3 3 Triple IPS 3 10 Displacement Load 32 850 lbs Fuel Tankage Two 260 Gallon Tanks 520 gals Fresh Water Tankage Including Hot Water Tank 170 gals Holding Tank w Macerator Overboard Disc...

Page 4: ...n 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...

Page 5: ...9 Alarms 10 3 Pilothouse Curtains 3 10 Stopping 10 4 Privacy Sunscreen Curtains 3 11 Operation 10 5 Windshield Operation CHAPTER 4 STEERING SYSTEM CHAPTER 11 INTERIOR EQUIPMENT 4 1 System 11 1 Vacufl...

Page 6: ...e of Topcoats Sheet pdf Barnegat QLX3294XLED Headlights pdf Blue Sea 7622 Automatic Charging Relay pdf Blue Sea 7700 Remote Battery Switch pdf Blue Sea 9012 Solenoid Switch pdf Bomar 50z Hull Port pdf...

Page 7: ...ilter and Separator pdf Racor 500MA Fuel Filter and Separator pdf Racor LG100 Separator pdf Racor RK19492 Shut Off Valve Kit Jul 8 2009 pdf Ritchie Compass pdf Roca 532003 Wiper Control pdf SeaXFire E...

Page 8: ...e Please review the topics in this manual before relying on the checklist it is simply an at a glance sheet to insure that you don t overlook anything important OPERATING PROCEDURES ENGINE INSPECTION...

Page 9: ...opilot display Eventually you will learn to approximate boat speed through the water by relating it to RPM on the tachometer 1 5 Hauling Blocking A facility that is unfamiliar with the 50z may require...

Page 10: ...engine space you are required to carry at least two type B 1 extinguishers aboard which are located in the galley and outboard of the starboard helm seat This should be checked regularly EPIRB Especia...

Page 11: ...matter and fire safety begins with fire prevention You can reduce the risk of fire by following common sense guidelines Do not allow debris or oily rags to collect in bilges or machinery spaces Unders...

Page 12: ...e you mad Moisture condenses out of the highly humid air on the inside walls of a fuel tank then runs down into the fuel Water can also be introduced at the fuel dock from a contaminated fuel supply F...

Page 13: ...to return to port being careful to avoid excessive vibration that might otherwise compound the damage by damaging the transmission The problem may be corrected in a day or so without hauling by an exp...

Page 14: ...ctor pump sends fuel to the individual cylinders for combustion Whenever you open the fuel line between the tank and the engine for example to change a filter element air enters the line Air may also...

Page 15: ...ngine s base Belt tension is OK if pressure deflects the belt by about 1 2 inch Overloading of the engine Rope wrapped around propeller shaft dirty bottom fouled propeller or air leaks in the raw wate...

Page 16: ...il leaks coolant leaks proper operation of the indicators and gauges proper exhaust color engine vibrations and sounds If temperature is high a Is the raw water intake seacock open at the base of the...

Page 17: ...engines to allow the oil to drain down from the upper part of the engine The transmission dipstick is red and unscrews It is difficult to find and reach as one must get down between engines aft move a...

Page 18: ...g both port and starboard Be sure that these aren t blocked with gear on deck when underway 3 6 The EVC Control Panel allows the operator to perform settings and choose information displayed on the en...

Page 19: ...e no restrictions to the air intake grills 6 the fuel valves over the tanks are OPEN 8 the HOUSE and BOTH ENGINE battery banks are turned ON 9 the throttle is in the neutral position 9 no one is in th...

Page 20: ...tions IPS DPS 3 USE BATTERY COMBINERS TO OVERCOME LOW VOLTAGE Upon turning ON the engine ignition switches next to the helm Check the voltage on each engine In the case of 30 the Port Engine had only...

Page 21: ...ttery switches ON not the EEP switch Then go into the central pilothouse hatch and push the yellow button on top of the PER switch down until it clicks in place Proceed with turning the Engine Ignitio...

Page 22: ...nowledge any ALARM 6 START the engine by pushing the engine START STOP 7 STOP the engine TURN OFF the Ignition Wait again until all lamps have gone out 8 RESTART the Engine 3 11 OPERATING PARAMETERS W...

Page 23: ...ed Ignore the upper right hand button which is for a Garmin autopilot interface Learn to handle the joystick in a safe and correct manner before you start using the function in tight quarters When the...

Page 24: ...OTE Panel Layout may vary between boats The helm station console is where most of the operational controls of the boat are located Become familiar with these before you need to use them In addition ma...

Page 25: ...e same time The 50z uses the Volvo version of the Humphries Interceptor system which has plates the move vertical at the aft outer edges of the transom Normally tabs are adjusted simultaneously with 2...

Page 26: ...ut having to stretch over the console To travel at 14 15 knots without being blasted by the wind Simply move slightly toward the centerline of the boat ather than directly behind the wheel to get out...

Page 27: ...double ended arrow in the upper right is a very handy sweep function The spot will swing about 30 degrees back and forth picking up objects that might otherwise not have been seen OPTIONAL DOCKING LIG...

Page 28: ...l tanks aft and are accessed through pilothouse seat lockers In the photo of the port tank below the valves for the port tank and the generator are shown in the open position These valves should be sh...

Page 29: ...hold a paper cup under the petcock and drain until clear fuel seen 5 4 FUEL CONSUMPTION You can learn some things from the MJM fuel efficiency chart on the next page It s the Horsepower Applied Assumi...

Page 30: ...MJM FUEL CONSUMPTION LOG DATE LOCATION ENG HRS HRS since LAST FILL GALS to FILL GPH COMMENTS...

Page 31: ...ians commented This is a Ferrari as I mashed the throttles forward to hit 20 knots in 5 3 seconds from a standstill No wonder that s on a par with some thunder boats and about what it takes a Mercedes...

Page 32: ...our boat s electrical system if you are not a qualified marine electrician ELECTRICAL PANELS There are two battery banks on your boat The house bank consists of 3 255Ah absorbed glass mat D8 AGM batte...

Page 33: ...derneath are Great Cabin and Pilothouse AC Controls The forward cabin AC control is in the head where you are most likely to be making adjustments if woken at night by the wrong temperature and where...

Page 34: ...batteries without another 120v charger The 120v equipment such as the oven cooktop outlets refrigeration and central vac are easily handled by the 240v circuit or the Inverter 120v AC Panel As mentio...

Page 35: ...e cord To retract the cord use the key fob 2 per boat shown Future hulls will have an IN and OUT power capability using the same control device On the port side is found the connection for the 30A 125...

Page 36: ...toggle switch on Victron Phoenix Panel 9 PREHEAT On the Control Panel DEPRESS PREHEAT ON and hold for 10 Seconds 10 START Then depress START switch while continuing to depress PREHEAT switch Keep pre...

Page 37: ...0 Injection Pump 11 Lube Oil Fill Side 12 Seawater Pump XEH 2LO UDLQ 14 Base frame 26 Starter 27 Alternator 28 HeatExchangerEnd Cap 29 Coolant Recovery Tank ORFN UDLQ 16 Fuel Inlet and Return 2LO LSVW...

Page 38: ...age column DAILY SP1 Check oil level in engine SP5 Check V belt tension SP7 KHFN SULPDU IXHO OWHU SP13 Check coolant level Check sea strainer SP18 Check electrolyte in batteries AFTER FIRST 50 HOURS S...

Page 39: ...loads Yes 230 1 House Bank Battery Charger Victron Centaur Charger 12 100 8 00 1840 25 2 0 460 Yes 230 1 Start Bank Battery Charger Victron Centaur Charger 12 50 4 00 920 10 0 4 92 Yes 230 4 A C Air H...

Page 40: ...no generator or shore power is available 1 Make sure the Shorepower 1 Generator breaker is OFF on the 120v AC Panel 2 Turn ON the INVERTER breaker on the 120V AC Panel 3 Turn ON the toggle switch at...

Page 41: ...been eroded Pay special attention to its condition when in new waters and marinas as environmental conditions affect the rate of deterioration If the zinc erodes rapidly current meters can be used to...

Page 42: ...of deterioration If the zinc erodes rapidly current meters can be used to assess possible causes and remedies See the Volvo Penta Operator s Manual for sacrificial anode location and inspection on the...

Page 43: ...e Battery Switch next to Start Battery 1 Stbd Settee Hatch Remote Battery Switch next to Start Battery 2 Stbd Settee Hatch Remote Battery Switch next to Start Battery 2 Stbd Settee Hatch Remote Batter...

Page 44: ...h the boats own water tank FILLING WATER TANK A deck fill is provided on the starboard side deck near the helm station and is labeled WATER As the tank is filled air escapes thru the vent This tank ca...

Page 45: ...ervice or in case or a ruptured line these valves can be closed to stop this water loop GENERAL ECOLOGY SEAGULL WATER PURIFIER See also Seagull owner s manual The galley is fitted with the best availa...

Page 46: ...shown as the right of two in Utility Room under the ladder 1 for the Generator located next to the generator These are designed for easy maintenance as long as you pay attention to the instruction to...

Page 47: ...pumping up and down There is a noticeable difference when the bilge has run dry This pump is most often used as a back up system to the 3 automatic pumps Its capacity is 15 gal min The automatic pumps...

Page 48: ...peared by pushing the 2 nd button from the left You will then see the lock symbol unlock and the gyro start to swivel on the control panel screen DE ACTIVATE When underway you can DEACTIVE the Seakeep...

Page 49: ...props ANCHOR WASHDOWN A spray nozzle to wash saltwater or mud from the anchor rode and chain is located under the anchor roller It is activated when raising the anchor by depressing a rocker switch on...

Page 50: ...alve accessible underneath the storage bag in the starboard pilothouse settee locker 2 TURN HOLD the switch in the Head to the right to activate overboard pumping using the macerator pump The control...

Page 51: ...r is circulating through the condenser via the seawater system The heat is transferred from the refrigerant to the seawater and pumped overboard taking the original cabin air heat with it The circulat...

Page 52: ...as well 11 7 SIRIUS SATELLITE RADIO ACTIVATION Optional To activate Sirius Satellite Radio services you will need to access the serial number See instructions in the Fusion Manual 11 8 LED TELEVISION...

Page 53: ...ssary Do not overfill 500 hrs Identify source Correct Clean Up Identify source Correct Clean Up Inspect for leaks and ease of valve operation Clean if necessary Change ea 200 hrs Change ea 200 hrs or...

Page 54: ...D In Main Cabin Floor Hatch Systems Room Test with manual switch Check operation Inspect and clean as needed Remove Lids check for loose cables clean Voltage Inspect all connections Inspect and replac...

Page 55: ...washed and to check all thruhulls and seacocks for growth Careful inspection of all underwater hardware at this point may avoid a potential problem in the future This is also a good time to check the...

Page 56: ...uhull Fuel Shut Off Valve over tanks Gen Set Raw Water Separator Discharge Thruhulls Battery Disconnects Electric Bilge Pump First Aid Kit AC Unit Raw Water Intake Thruhull Fuel Shut Off Valve over ta...

Page 57: ......

Page 58: ...40V Generator 240V Shore Power 1 10 15 WATER HEATER 30 DRYER MACHINE 20 WASHER MACHINE SPARE SPARE SPARE 15 10 10 10 15 BAR REFRIGERATOR ELECTRIC GRILL CENTRAL VACUUM TV SPARE SPARE 15 5 SPARE SPARE 1...

Page 59: ......

Page 60: ...Genset Muffler Centek 1500027 24 1 Genset Sound Enclosure Northern Lights 05 78610 25 1 Inverter Victron Phoenix 12 3000 26 1 Battery Charger House Victron Centaur 12 100 27 1 Battery Charger Start V...

Page 61: ......

Page 62: ...ru Hull Air Conditioning Discharge 1 Marine Town Builder Spec 69 1 Seacock Genset Intake 3 4 Forespar 931143 70 1 Seawater Strainer Air Conditioning Groco ARG 1250 P 71 1 Seawater Strainer Genset Groc...

Page 63: ......

Page 64: ...cabinet doors drawers and fridge are latched securely shut 10 Do not apply adhesive take directly to any surface particularly ultra leather 11 Turn off all battery switches and make sure the Mastervo...

Page 65: ...ame manner as the Basic Warranty E Dealers The name and address of Authorized Dealers is available from the Manufacturer The Manufacturer does not authorize the Dealer or any other person to assume fo...

Page 66: ...h changes in previous products K Registration Cards The Manufacturer recommends that you immediately fill out and return the Warranty Registration Card for the Vessel The information contained on this...

Page 67: ...__________________________________________________ Description of Resolution _______________________________________________________________________ ___________________________________________________...

Page 68: ...___ Contact Person ______________________ Description of Defect please include photos Description of Corrective Action include invoices Labor Rate Labor Cost Material Cost Total amount of claim All cl...

Page 69: ...e on the trip Then turn on the VHF on the instrument itself Turn OFF shorepower breakers on the dock Then disconnect the shore power cord s at the dock end Using toggle in starboard cockpit locker or...

Page 70: ...n the foredeck or handling a dock line when this test is performed DPS Dynamic Positioning System holds the boat on it s current heading and GPS position automatically It can be used carefully for sol...

Page 71: ...nd 120v panels Be sure that HOUSE BATTERY CHARGER and START BATTERY CHARGER breakers p4 are ON and check to see that the 12 volt meter p7 is rising or over 13 volts STEP 9 Shut Down Systems Probably t...

Page 72: ...ack and forth between GYRO ON and GYRO OFF by continuing to push this 2nd button it takes maybe 10 15 seconds to respond to either action 4 Turning OFF Seakeeper Before tunring OFF the power to the Se...

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