CM4.65 & CM4.80 - Craftsman Marine BV

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11 Problems and solutions Problem 6. Engine becomes overheated 7. Not all cylinders are performing well Probable cause • Level of cooling liquid too low • Raw water seacock closed • Raw water strainer clogged • Leakage in raw water entry system • Defective thermostat • Cooling liquid pump defective • Defective impeller of raw water pump • Defective injector / injector pump • Oil level too high • Oil level too low • Defective oil filter • Air in the fuel system • Fuel filter clogged up by water and/or dirt • Leakage in fuel supply line or fuel injection line • Defective injector / injection pump • Fuel line clogged • Incorrect valve tolerance • Filter of electrical fuel lift pump clogged • Defective electrical fuel lift pump Solution • Check/top up • Check and open • Check / clean • Check / tighten / replace • Check / replace • Check / replace • Check / replace • Check and clean or replace if necessary • Lower oil level • Top up • Replace • In all these cases, please consult your authorized dealer and ask him to solve the problem 8. Engine has little or no oil pressure 9. Engine oil cumsumption excessive • Oil level too low • Clogged oil filter • Defective oil pump • Excessive inclination angle of engine • Incorrect SAE-specification or quality of lubrication oil • Oil pressure apparently too low on account of defective oil pressure switch,sensor or gauge • Oil level too high • Excessive inclination angle of engine • Incorrect SAE-specification or quality of lubrication oil • Leakage in lubrication oil system • Excessive wear and tear to cylinder or piston • Insufficient supply of combustion air • Overload of engine • To up till corect oil level • Replace • Repair / replace • Check / adjust alignment • Replace by good quality engine lubricating oil • Replace defective component • Lower the oil level • Check / adjust alignment • Replace by good quality lubricating oil • Repair / replace • Check compression; overhaul engine, if needed • Check air inlet and ventilation openings in engine room • Check the dimensions of the boat propeller 36 Crafted with CRAFTSMAN MARINE
Problems and solutions 11 Problem 10. Excessive fuel consumption of engine Probable cause • Poor or polluted fuel quality • Defective injector / injection pump • Incorrect injection moment • Excessive wear and tear of cylinder / piston • Insufficient supply of combustion air Solution • Check fuel quality. Drain fuel tank and rinse it well. Fill with good quality fuel • Check and replace if necessary • Check / adjust • Check compression, overhaul engine if necessary • Check the air intake and the ventilation openings in the engine room 11. Blue smoke coming out of the exhaust (when idling) • Oil level too high • Excessive inclination angle of the engine • Leaking oil seal of the turbo compressor • Lower oil level • Check / adjust alignment of engine • Check / replace 12. Black smoke coming out of the exhaust (under load) • Defecte turbocompressor • Insuffient supply of combustion air • Leakage in air intake manifold • Defective injector / injection pump • Incorrect injection moment • Incorrect valve clearance • Excessive wear and tear of cylinder / piston • Engine overheated, does not reach maximum rpm • Check air intake as well as the ventilation openings in the engine room • Check/ replace • Check/ replace • Check and replace when necessary • Check/readjust • Readjust • Check compression, overhaul the engine if needed • Check the dimensions (diameter and pitch) of the propeller and replace the propeller if necessary. 13. Engine produces white smoke from the exhaust (at full load) • Air inclusion in the fuel system • Defective injector / injection pump • Water in the fuel system • Incorrect valve clearance • Incorrect injection moment • Poor fuel quality or polluted fuel • Condensation of vapour in the exhaust system, on account of very low ambient temperature • Check / bleed the system • Check / replace if necessary • Check / clean water separator / fuel filter • Check / adjust • Check / adjust • Check fuel quality. Drain fuel tank and rinse it well. Fill with good quality fuel • No problem, no danger Crafted with CRAFTSMAN MARINE 37
Page 1: CM4.65 & CM4.80 Engine manual Craft
Page 4 and 5: Note: This manual applies to model
Page 6 and 7: Notes 6 Crafted with CRAFTSMAN MARI
Page 8 and 9: 2 Product description Service side
Page 10 and 11: 3 Standard scope of supply • Engi
Page 12 and 13: 4 Prior to commissioning the engine
Page 14 and 15: 4 Prior to commissioning the engine
Page 16 and 17: 5 Engine operation First check The
Page 18 and 19: 6 Calorifier installation Calorifie
Page 20 and 21: 8 Maintenance and inspection Dipsti
Page 22 and 23: 8 Maintenance and inspection Checki
Page 24 and 25: 8 Maintenance and inspection AA.480
Page 26 and 27: 8 Maintenance and inspection Remove
Page 28 and 29: 8 Maintenance and inspection Check
Page 30 and 31: 9 Winter storage Protective fuel mi
Page 32 and 33: 10 Preparations for the new season
Page 34 and 35: 11 Problems and solutions Problem 1
Page 38 and 39: 12 Technical data Type of engine Ge
Page 40 and 41: 13 Overall Dimensions CM4.80 with Z
Page 42 and 43: 14 Lubricants and cooling liquids V
Page 44 and 45: Notes 44 Crafted with CRAFTSMAN MAR
Page 46 and 47: Notes 46 Crafted with CRAFTSMAN MAR
Page 48: info@craftsmanmarine.com www.crafts

CM4.65 & CM4.80 - Craftsman Marine BV

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