MJM Yachts 29z Outboard - Manual (Page 13)

CHAPTER 3 PROPULSION SYSTEM
- 13 - 29z
KEY for dual stations or
to activate Sterndrive
Trim Panel.
BACK button jumps
back from sub-menus
to main menu page.
MULTI- function button
2
nd
Station Lock
Indicator
NEUTRAL Button.
Green LED light above
Red LED light below.
ENTER/scroll knob –Push
in response to alarms,
toggle menus, enter sub
menus & confirm choices
KEY LED light
Only use the fuel and oils recommended in the chapter on Technical Data in the Volvo Engine
Manual.
3.5
ZINCS
With a sterndrive, TO AVOID SERIOUS DAMAGE TO THE STERNDRIVE, PAY VERY CLOSE
ATTENTION, AS IN CHECK EVERY DAY, the condition of the zinc on the top of the cavitation
plate on the sterndrive. It’s easy to see from the swim platform without swimming. That could be
your first indication of a problem. There is a 2
nd
zinc on the sterndrive up under the drive next to
the collar where it attaches to the stern. You will need a diver to check that one. In fact, a diver
should check the thruster and transom zincs every time the bottom is cleaned or once per month.
In addition to sterndrive, thruster and transom zincs, pay close attention to any engine zincs
(sacrificial anodes) on the heat exchanger and intercooler. See Volvo manual. The timing for
replacing zincs varies depending on the characteristics of the seawater, the amount of electrical
current in marinas, or even (if excessive wear is noted) an electrical short on the boat, etc.
Inspect the engine zincs periodically at the time of oil changes and remove the corroded area on
the surface, replacing them when they’ve deteriorated to less than 50% of original size. Extra
engine zincs are provided in the Volvo Spare Parts Kit. Otherwise corrosion of the seawater
cooling system will occur and water leakage or parts breakage will result.
3.6 AIR
Diesel engines use a large quantity of air for combustion. The engine of the 29z gets this air thru
intakes in cockpit walls, both port and starboard. It is important to keep these intakes clear and
free of foreign matter. Before entering the engine, air passes thru an air filter in a plastic case on
the starboard side of the engine, which should be checked at intervals per the maintenance
schedule.
3.7 EVCec-C BUTTON CONTROL PANEL This allows the operator to perform settings and choose
information displayed on the engine control LCD screen.
CALIBRATION MODE – Calibrates different parts of the EVC system. To enter this mode, turn
ignition ON then press BACK and ENTER together for 3 seconds. This permits the following
calibrations: Throttle Lever – Slip Calibration for low speed – Idle Speed
SERVICE/OEM MODE – Turn ignition ON and press MULTI for 5 seconds to give access to
menus in the LCD that the builder needs to access, including more information regarding fault
codes and configuration of the LCD display pages.