Volvo Penta MD5A Service Manual

6 Reduce to idle and check that the engine is running smoothly. Engage the control lever for gear-changing as follows: Push in the red disengaging

7 The MD5A is a single-cylinder, 4-stroke, marine diesel engine with direct injection and sea-water cooling. ENGINE ASSEMB

8 FUEL SYSTEM The fuel system contains a feed pump with pre-filter, fine filter, injection pump and injector. The feed pump, which is of the diap

9 REVERSE GEAR The Volvo Penta reverse gear, type Mono Shift (MSB) has a reduction ratio of 1.91:1. The reduction gear is integrally built w

10 Checks and service should be regularly carried out according to the intervals given below. Let an authorized Volvo Penta Service Shop look afte

11 CHECK DAILY BEFORE STARTING OIL LEVEL IN ENGINE Each day before starting check that the oil level is between the marks on the dipstick

12 ELECTROLYTE LEVEL IN BATTERY The level should be between 5—10mm (3/16 – 3/8”) above the cell plates in the battery. If necessary top up with dis

13 CHANGE OIL IN REVERSE GEAR The oil can be drained from the reverse gear by removing the plug under it or by sucking up the oil through

14 Coat the new filter rubber gasket with oil. Check the area on the engine in contact with the filter and screw on the filter by hand until it j

15 CHECK-TIGHTEN THE CYLINDER HEAD BOLTS Authorized personal should check-tighten the bolts with a torque wrench before starting a new or n

16 ELECTRIC SYSTEM Alternator The engine is equipped with an alternator. To ensure that the alternator with the built-on regulator functions witho

17 Change Fuse A fusebox is mounted on the cylinder. A fuse breaks the electrical system when the system is overloaded. Re-connect the electri

18 Extra fuel filter If an extra fuel filter is fitted together with a water separator, check the transparent bowl to see if there is any water

19 Venting the fuel system In order for the engine to be able to start, the fuel system must be vented on the following occasions: When chang

20 SERVICE IN CONNECTION WITH LAYING-UP AND LAUNCHING THE BOAT INHIBITING ENGINE AND REVERSE GEAR IDLE ENGINE FOR BRIEF PERIODS WITH BOAT IN THE W

21 4 Drain the fuel filter. 5 Disconnect the fuel pump flexible suction hose from the fuel system and insert the free end in a can fille

22 9 Insert the hose into the rustproofing mixture. Start the engine and allow it to idle until the mixture is finished. NOTE! The water pump

23 15 Screw tight the cover with its gasket on the cooling water pump. Connect the hose between the cooling water intake and the revers

24 TRACING FAULTS WITH INTERRUPTIONS IN OPERATION The fault tracing scheme given below lists only the most usual reasons for faults that give rise

25 Technical Data General Engine designation MD5A Operation 4-stroke diesel with direct injection Number of cylinders 1 Propeller shaft

FOREWORD Before you start running your new Volvo Penta marine engine, you would be advised to read through this instruction book carefully.

26 Reverse Gear Oil quality/Viscosity See under “Engine” Oil capacity, litre (qt.) 0.55 (0.5) Cooling System Thermostat, starts to

27 Cable Colour Code Marking Colour mm2 A.W.G. A White 6 9 B Black 1.5 15 B’ Black 0.6 19 B” Black 0.75 18 C Red 6 9 C’

28 1. Connection for manual starting crank 2. Fusebox 3. Thermostat housing 4. Decompression handle 5. Injector 6. Oil filler cap, engine

29 Alternator 7, 14, 16, 27 Lubricating oil 3, 25 Battery 12 Main Switch 5, 6 Belt tensioning 12, 14 Oil change 12

1 Presentation 2 General Information 3 - 4 Running Instructions 5 - 6 Starting the engine Running instructions Shutdown procedure 5

2 INSTRUMENT PANEL 1. Switch, optional equipment 2. Warning lamp, “Excess temp.” 3. Place for instrument (ø 52 mm opt. equipment) 4. W

3 Important information on the function of your engine: FUEL Use diesel fuel oil of quality “Autodiesel”. Poorer fuel quality can cause int

4 SAFETY EQUIPMENT Irrespective of whether the boat is being used for long cruises or short bathing trips, the boat should be equipped with the saf

5 STARTING THE ENGINE Switch on the main switch. Start the engine room fan (if fitted) and let it run several minutes before starting the eng