MJM Yachts 40z Express User Manual
Page 18
PROPULSION SYSTEM
3.9 ALARM DISPLAY
When the ignition key is first turned ON to position I, you may hear an audible alarm signal
and see a “Stop Sign” appear on the Display, indicating that the diagnostic function
has registered a malfunction.
Please refer to Volvo Operator’s Manual chapters for detailed information about
FAULTS and recommended action starting on page 40 of the VPOM.
3.10 STOPPING
Put both engine controls in NEUTRAL. Turn & hold the spring-loaded Ignition Key with pressure to the
left until the engine stops. If unsuccessful, there’s a clearly labeled “Emergency Shutdown” button in
the upper middle poside of the engine.
Make sure to turn OFF Engine Battery Switches on the electrical panel when leaving the
boat.
Engine Stop & Restart after Crash-Stop If the engine otherwise stops, the following
procedure for re-start must be followed.
1. Put control lever in NEUTRAL
2. Acknowledge any ALARM
3. TURN & HOLD ignition switch left to OFF until all lamps have gone out.
4. Then TURN the ignition system to the ON (not the engine Start) position only.
5. Acknowledge any ALARM
6. START the engine by: TURNING & HOLDING the ignition switch to the right.
7. STOP the engine. Wait again until all lamps have gone out.
8. RESTART the Engine.
3.11 OPERATING PARAMETERS
While it’s good to run the engine at top speed periodically for a minute or so,
“Max Cruising Speed” is at least 10% below full throttle of 3500 rpm, or 3150 rpm..
While running, pay attention to the engine gauges on the LCD display. A significant
change in oil or coolant temperature, oil pressure, or voltage should investigated
immediately before the engine is damaged.
OIL PRESSURE – Normally between 4.5 and 5 bars, except lower when idling
COOLANT TEMPERATURE – Normally between 167 and 194 degrees F.
CHARGING – Normally about 14 Volts when underway.
Depending on hull structure and engine installation, engine and hull resonance may be
greater at some speeds than others. This is normal and you will learn to pick the sweet
spots. If you hear any abnormal sounds, stop the engine and inspect.
If any warning lights or buzzers activate, stop the engine
immediately. Determine the cause and repair the problem before
continuing to operate.
CHAPTER 3