Volvo Penta MD7A User manual

FOREWORD

Before you start your new Volvo Penta marine engine, you are advised to read

through this instruction book carefully. It contains information relevant to the

proper operation and maintenance of your engine.

Volvo Penta has built up an extensive service organization with service shops and

specially trained personnel at your service.

Always contact your local Volvo Penta representative for advice and when in need

of service and parts.

WARRANTY CERTIFICATE

A warranty certificate is supplied with each engine. It contains the warranty

conditions for the engine and should be studied carefully.

Also included is a report card which is to be completed by the dealer or boat seller

and forwarded to Volvo Penta.

However, if our warranty is to apply, it is an absolute condition that the measures

given in the “Check and Service Scheme” are carried out and that your engine

and equipment are looked after according to the instructions in this book. When in

doubt, always get in touch with an authorized Volvo Penta dealer.

In all correspondence with your dealer and when ordering parts, always state the

type designation and serial number of the engine and reverse gear or drive (see

starboard side of engine).

Make certain that the engine’s specification coincides with what is described in

this instruction book.

AB VOLVO PENTA

Technical Publications Dept.

Instruments and Controls 2

General Information 3 -4

Running Instructions

Starting the engine

Running instructions

Shutdown procedure

Technical Description 8 -11

Checks and Service Scheme 12

Checks and Service

–

Check daily before starting

Check every 14 days

Service every 50 hours of operation

Service every 100 hours of operation

Venting the fuel system

Service when laying-up and launching

13 -14

15 -16

17 –22

24 –28

Fault Tracing Scheme 29

Technical Data 30 –31

Wiring Diagram 32

Engine Component Guide 33 –34

Index, alphabetical order 35

CONTENTS

INSTRUMENT PANEL

1. Switch, extra lighting

2. Warning lamp, “high temperature”

3. Place for instrument (dia 52 mm,

opt. equipment)

4. Warning lamp, “low oil pressure”

5. Switch, extra lighting

6. Warning lamp, “No battery charging”

7. Buzzer, “low oil pressure, high tempe-

rature”

8. Key switch

CONTROL SYSTEM

Volvo Penta Single Control System

For side mounting

1. Control lever

2. Disengaging button

Push in the button when the control lever is in neutral

and move the lever a bit forwards. Release button.

The lever is now used only for engine speed control.

To use the lev er for both engine speed control and

gear-changing, push in the button and pull back the

lever to neutral position and move it again “Forward” or

“Reverse”.

N = Neutral

F =Control lever in position for running “Forward”

R =Control lever in position for running “Reverse”

T = Engine speed control

INSTRUMENTS AND CONTROLS

Important information on the function of your engine:

FUEL Use diesel fuel oil of quality “Autodiesel”. Lower fuel

quality can cause interruptions in operation.

LUBRICATING OIL Use only oil with quality CD (DS) according to the

API-System. Volvo Penta oil for diesel engines can

be used with advantage since it meets these quality

demands. See under “Technical Data” concerning

viscosity if any other oil is used.

RUNNING-IN A new marine engine must be run-in with due care

during the first 20 hours of operation. If full output is

taken out during this time, it should only be done for

short periods.

Oil change. Change the engine oil and oil filter after

the engine has been run for 20 hours. See further

under “Checks and Service”.

ENGINE SPEED Max. engine speed: MD7A 43.4 rev/sec (2600 rpm).

In order to select the correct propeller, reference is

made to the Volvo Penta propeller diagram. Check

the engine speed with normal load in the boat. In

order to obtain maximum engine performance, an

engine speed as high as possible should be chosen

but not, however, greater than 43.4 rev/sec (2600

rpm).

NOTE! When the boat has been in the water for

some time, the speed and max. rev/mm can drop

due to marine growth on the hull. Prevent marine

growth by painting the bottom of the boat with anti-

fouling paint. If the boat is equipped with S-drive

model MD7A/110S –or any other S-drive model –it

is important not to use an anti-fouling paint which

contains copper. See further “Service in connection

with launching”.

GENERAL INFORMATION

SAFETY EQUIPMENT

Irrespective of whether the boat is being used for long cruises or short bathing trips, the

boat should be equipped with the safety equipment listed below. It can, of course, be

supplemented further according to personal tastes. Investigate at regular intervals to

ensure that there is safety equipment on board and that it is in working order.

LIFE-JACKETS for all on board.

FIRE EXTINGUISHER, approved, at least one and installed where it is easy to get at.

DISTRESS ROCKETS and matches. Packed watertight.

FIRST-AID BOX

TOOLS suitable for the equipment on board.

ON BOARD KIT containing, e.g. impeller, etc.

ANCHOR with line.

RADAR REFLECTOR

RADIO for listening to, e.g., weather reports.

COMPASS which is deviated.

BOAT HOOK and paddle.

MOORING ROPES

FOG-HORN and whistle.

FLOATING ANCHOR

TORCH

PREPARATIONS BEFORE STARTING

Make sure that:

There is noFUEL LEAKAGE

There is noWATER LEAKAGE from engine and hull

There is noOIL LEAKAGE

There is noSMELL OF LP-GAS in the deep cavities in the boat or elsewhere

The OIL LEVEL is correct

There is enoughFUEL for the planned voyage

The proper NAUTICAL CHARTS are on board for the planned voyage

If there are persons on board who have never been in a boat before, inform them how the

boat functions and where the life-jackets and fire-extinguisher are located. Also inform

them of anything more you think necessary from a safety point of view. Should anything

unexpected happen during the voyage, it is often too late to tell those on board how

safety equipment works.

GENERAL INFORMATION

START THE ENGINE

Switch on themain switch. Start the engine room fan(if fitted)

and let it run several minutes before starting the engine.

Check that cocks for fuel and water intake are open. If water in the

boat, use bilge pump and drain the boat.

Disengage the engine speed control from the gear-changing as

follows:

Move the control lever to neutral, push in the red disengaging

button, and move the lever slightly forwards. Release the button.

The lever can now only operate the engine speed.

Check to make sure that the stop control is pushed in.

Turn the key switch one position to the right. The warning lamps

for battery charging and oil pressure should now go on and the

buzzer should sound. Push in and turn the key further to the right

to start the engine. Release the key when the engine starts. Hand

starter. If the engine is started with the starting crank, the

decompression handle (see pages 34-35) on the rocker arm cover

should first be folded up. Return the de-compression handle for

running when the engine has been cranked up in speed.

Cold weather starting

CAV fuel injection pump: Startingis facilitated if the cold-start

control is pulled out. The cold-start control must be pushed in after

the engine has started.

BOSCH fuel injection pump: The engine has a built-in automatic

cold-start device.

Check immediately after starting that the warning lamps for the

oil pressure and battery charging are out and that the siren is quiet.

If any of the lamps are on and the siren is sounding, the

engine must be stopped immediately and an investigation

made.

Run the engine warm at rapid idle. Check to make sure that the

cooling water flows out with the exhaust gases.

NOTE. The key switch should always be switched on as long

as the engine is running to ensure battery charging.

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 button and pull the lever back to

neutral. Release the button. The control lever can now be used

both for gear-changing and engine speed.

RUNNING INSTRUCTIONS

RUNNING

The single lever control contains engine speed as well as gear

shifting functions.

NOTE! If the boat is equipped with a folding type of propeller,

the engine speed must be reduced to idling prior to shifting to

“FORWARD”. Shifting at higher speed might easily damage

the propeller.

F = Forward N = Neutral

R = Reverse T = Throttle

In order to achieve good running economy, the engine should

not be run at maximum engine speed for long periods of time.

Check regularly during running that the warning lamp for

battery charging is out. Should the cooling water temperature

be too high or the oil pressure too low, the buzzer will warn

you, at the same time the relevant warning lamp goes on.

If this happens, the engine must be stopped immediately

and the reason investigated.

SHUTDOWN PROCEDURE

Before shutdown the engine should be allowed to idle for a

few minutes with the control lever in neutral.

Stop the engine by pulling out the stop control when the

engine is idling. Then turn back the key switch to the initial

position.

RUNNING INSTRUCTIONS

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