Westerbeke Vire 7 Owner's Manual
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Westerbeke Vire 7 Owner's Manual

Westerbeke Vire 7 Owner's Manual

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OWNER= = S MANUAL
WESTERBEKE
Vire 7 Marine Engine
Publication #15261
Issue Date 1 December 1975
Edition 4

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Summary of Contents for Westerbeke Vire 7

  • Page 1 OWNER= = S MANUAL WESTERBEKE Vire 7 Marine Engine Publication #15261 Issue Date 1 December 1975 Edition 4...
  • Page 2 LIST OF FIGURES Figure 1. Starboard View Vire 7 Figure 2. Port View Vire 7 Figure 3. Installation Drawing Figure 4. Exhaust Pipe and Cooling System Figure 5. Electrical Wiring Diagram Figure 6. Carburetor Figure 7. Magneto Wiring Diagram Figure 8. Flywheel Magneto...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Engine Photographs......... . 4 Technical Data.
  • Page 4 Figure 2 Port View Vire 7 1. Forward and Reverse Lever 2. Air Filter 3. Carburetor 4. Gear Box Oil Drainage Plug 5. Timing Marker 6. Pulley Belt Cover 7. Spark Plug...
  • Page 5 Figure 2. Port View Vire 7 1. Pulley 2. Starter Generator 3. Reverse/Reduction Gear Oil Filling and Inspection Gap 4. Gear Flange 5. Cooling Water Suction Inlet 6. Exhaust Collector 7. Spark Plug...

  • Page 6: Technical Data

    TECHNICAL DATA ENGINE Number of Cylinders Type Two-Stroke Bore (3.75 in.) Stroke (2.756 in.) Volume 16.3 cu. in. Compression Ratio 6.5:1 Output/RPM 7 HP/3000 RPM Cooling Raw water through gear type pump Fuel Diaphragm type in connection with carburetor, operated by pressure fluctuations in crankcase Carburetor Tillotson HL...
  • Page 7 Side Clearance of Other Piston Rings in Groove 0.050 - 0.075 Pressure Fit of Gudgeon Pin to Piston 0.002 - 0.007 mm Piston Clearance in Bush 0.006 - 0.028 mm ( .0002 in. / .001 in. ) Side Play of Connecting Rod to Crankshaft 0.20 - 0.30 mm ( .008 in. / .012 in. ) End Play of Screw Shaft Approx.

  • Page 8: Installing The Engine In The Boat

    INSTALLING THE ENGINE IN THE BOAT To ensure proper functioning of the engine, extreme carefulness is called for in installation. To facilitate installation, the engine can be tilted longitudinally; however, this tilting must not exceed is recommended). Figure 3 Figure 3, above, will give the most important measurements to be taken into account when installing an engine.

  • Page 9: Installation Of Engine And Propeller Shaft

    Installation of Engine and Propeller Shaft It is extremely important that the propeller shaft and the power take-off shaft (gear box screw shaft) are completely aligned and centered. The propeller shaft does not require a special pressure bearing because the screw shaft bearing absorbs axial loads also.
  • Page 10 In some cases it may be difficult to raise the exhaust pipe as suggested; in that case proceed as described in Figure 4. A. In case the cooling of the exhaust pipe is necessary, it can be arranged by leading a small portion of the cooling water through a control cock into the exhaust pipe (Fig. 4.

  • Page 12: Other Things To Remember

    Other Things to Remember Absolute cleanliness is required when installing the fuel line. As fuel line material 1/4 in. Plastic hose may be used (check local requirements and with insurance company, if acceptable). The ignition cables must not touch the hot engine parts as this may damage insulation. If the engine is installed in a confined space (e.g., a sailboat) adequate ventilation has to be provided (fire hazard).

  • Page 13: Running-In Of Engine

    CONSTRUCTION General The Vire 7 engine has been designed for marine use only. It is equipped with a reverse/reduction gear. By means of a hand gear lever forward-neutral-reverse is engaged. The reduction gear ratio is 2:1 and in froward gear the propeller is turning in opposite direction of the engine.

  • Page 14: Engine

    Engine The engine is a water-cooled one-cylinder two-stroke engine. The cylinder head and the cylinder have been cast in one piece. To ensure even HP output, an exhaust collector with a cooling casing has been permanently fastened to the engine. Such a collector is necessary in a two-stroke engine as the exhaust pipe system length, diameter, shape and/or muffler arrangements may vary considerably.
  • Page 15 Figure 5 - Electrical Wiring...

  • Page 16: Cooling

    Cooling A rubber gear type cooling water pump has been installed in the reverse/reduction gear. This pump draws water from under the boat and pushes it through the casing the exhaust collector first and through the cylinder casing after that. The water leaves the engine from the top of the cylinder casing which prevents formation of air in the cylinder casing.

  • Page 17: Starter Generator

    16W (6v). when alternating current is used for lighting purposes. switching should be made to one yellow wire only (see Fig. 7). (The following Is furnished for those interested in more magneto information. The Westerbeke Recommended Wiring Diagram #1523? is shown on Page 12.) 1.

  • Page 18: Maintenance

    MAINTENANCE Maintenance Intervals One of the surest ways to ensure reliable operation of the engine is to give it proper maintenance at the right time. Maintenance cost is low in comparison with the cost of repairs necessitated by negligence. Beginning of the boating season: Remove protective oil from the crankcase and the cylinder by rinsing with fuel.
  • Page 19 below 10 pints...

  • Page 20: Reverse/Reduction Gear Lubrication

    Reverse/Reduction Gear Lubrication: Fill the box with oil so that the filler plug touches oil level when it is tightened and when the engine is in normal position. A mark on the filler plug shows the absolute maximum level. The oil quantity is 1-1/2 pints.

  • Page 21: Cleaning The Air Filter

    Cleaning the Air Filter: The air filter is of the so-called dry type. It is opened by removing the screws keeping the air filter in place. After that remove the cap and the filter. At the end of the boating season clean the filter with gasoline.

  • Page 22: Adjusting The Ignition Timing

    Figure 8 - Fly Wheel Magneto Adjusting the Ignition Timing Adjust the breaker point gap as described above. Ignition (opening of breaker point gap) should occur when the crank shaft is being rotated and the flywheel timing marker is at the level of the lower surface of the engine right side fastening point (see picture 1).

  • Page 23: Assembly Instructions

    ASSEMBLY INSTRUCTIONS Dismantling the. Engine Removal of the fly Wheel: Remove the belt cover and The belt pulley. Remove the pulley wheel. Remove the flywheel fastening nut. Fasten the extractor with pulley wheel screws to the flywheel. tighten the extractor center bolt against the end of the crankshaft.

  • Page 24: Dismantling The Reverse/Reduction Gear Box

    Figure 9. Tightening Flywheel Install the piston and its pads (Note: Piston ring ends should be at the piston pin locking side of piston. This side of piston should be installed on the flywheel side). Install the cylinder and its gasket. Install the magneto anchor plate with its parts, the flywheel and the pulley wheel.

  • Page 25: Assembling The Reverse/Reduction Gear Box

    The reverse gear. intermediate gear wheel and its bearings become loose when the circlip is removed from the end of the shaft. Shaft gaskets are removed only if they are to be replaced with new one When removing the bearings pay attention to the fact that removing force should not be transferred through the bearing surfaces and roiling part unless you intend to discard the bearings after the removal.

  • Page 26: Fault Finding Chart

    FAULT FINDING CHART Engine Trouble Probable Cause 1. The engine does not start or stops while running 1. Lack of fuel 2. Too much choke 3. Water in the carburetor 4. Carburetor main nozzle clogged 5. Carburetor strainer clogged 6. Gasoline tank vent hole clogged 7.

  • Page 27: Parts List

    NOTES ON USING THIS PARTS LIST 1. Unit of issue for all linear commodities is inches (not feet or yards) 2. Please B B report errors and omissions to us via speed letter. (Attention: Parker Chick)
  • Page 28 CONTENTS VIRE 7: CRANKCASE - CYLINDER - CARBURETOR VIRE 7: CRANKSHAFT - ROD - PISTON VIRE 7: FLYWHEEL - MAGNETO VIRE 7: WATER PUMP - MANIFOLD VIRE 7: TRANSMISSION - (EXTERNAL) VIRE 7: TRANSMISSION (INTERNAL) VIRE 7: ELECTRICAL SYSTEM VIRE 7:...
  • Page 30 VIRE 7: CRANKCASE - CYLINDER - CARBURETOR NAME REMARKS 15816 PLUG CRANKCASE DRAIN 18264 WASHER CRANKCASE DRAIN PLUG 18199 BLOCK FRONT HALF 15856 WASHER SEALING 18255 SCREW ALLEN HEAD 15851 SEAL CRANKSHAFT 18273 ADAPTER CRANKCASE BREATHER 15828 STUD CYLINDER 15889...
  • Page 32 VIRE 7: CRANKCASE - ROD - PISTON NAME REMARKS 18205 PULLEY ROPE STARTING 18254 SCREW PULLEY TO CRANKSHAFT 18206 PULLEY ELECTRIC STARTING 18197 PULLER PULLEY FROM CRANKSHAFT 15814 PULLEY TO CRANKSHAFT 18246 SCREW 15891 ELECTRIC STARTING PULLEY 18260 BEARING FRONT HALF...
  • Page 34 VIRE 7: FLYWHEEL - MAGNETO NAME REMARKS QUAN 15963 FLYWHEEL HOUSES MAGNETO 15961 IGNITION POINTS 15958 POINTS IGNITION 15959 COIL IGNITION 15970 SCREW 15967 FELT 15962 COIL AUXILIARY 18238 SPRING 15957 CONDENSER 15965 ARMATURE 18274 CABLE IGNITION 18253 SCREW 18252...
  • Page 36 VIRE 7: WATER PUMP - MANIFOLD NAME REMARKS QUAN 18248 SCREW WATER PUMP HOUSING 18216 HOUSING WATER PUMP 18212 IMPELLER WATER PUMP 18223 GASKET WATER PUMP IMPELLER 18215 PLATE WATER PUMP BODY TO TRANSMISSION 18210 HOSE WATER PUMP TO CYLINDER...
  • Page 38 VIRE 7: TRANSMISSION (EXTERNAL) NAME REMARKS QUAN 18213 HOUSING TRANSMISSION 15840 DOWEL 15899 SHAFT 15900 WASHER 15901 GEAR 15845 BEARING 15862 SNAPRING 15859 SNAPRING 18230 SCREW 18256 SHIFT LEVER 18225 KNOB SHIFT LEVER 18229 LEVER SHIFT 15871 SPRING 15821 SCREW...
  • Page 40 VIRE 7: TRANSMISSION (INTERNAL) NAME REMARKS QUAN 18245 COUPLING STUD 15831 STUD 15911 WASHER 15910 COUPLING ENGINE HALF 18244 18240 WASHER 15908 DAMPER 15909 COUPLING PROPELLER SHAFT HALF 15830 STUD COUPLING 15933 BUSHING 15850 SEAL 15847 BEARING 18220 THRUSTWASHER 18267...
  • Page 41 VIRE 7: ELECTRICAL SYSTEM NAME REMARKS 15841 PANEL 15176 GENERATOR COMBINATION STARTER/ GENERATOR 11185 STRAP STRAP 15155 PULLEY STARTER 15229 SPACER STARTER POSITIONING 15228 BELT TO SEPT. 74 18226 GUARD TO STARTER BELT 18247 SCREW GUARD 19265 STRAP GENERATOR - 13585 BELT...
  • Page 43 VIRE 7: MISCELLANEOUS NAME REMARKS 20955 THRUHULL ASSEMBLY 20954 TOOLKIT 20956 INSTALLATION 20923 ROPE STARTING 20924 ELBOW FLANGED - SEA WATER DISCHARGE 20717 LINE SEA WATER PIPING 20925 STRAINER SEA WATER 20715 WRENCH 8 MM. ALLAN - FRONT PULLEY 18197...

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