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5. TROUBLE AND TROUBLESHOOTING

Trouble

Probable Cause

Measure

Reference

Starting Failures

Starter turns, but engine
does not start

No fuel.

Replenish fuel; vent air.

3.3.2(3)

Fuel filter is clogged.

Replace element.

4.3.5(1)

Improper fuel.

Replace with recommended
fuel.

Faulty fuel injection.

Ask for repairs.

Compression leakage from
intake/exhaust valve.

Ask for repairs.

Starter does not turn or
turns slowly (Engine can
be turned manually)

Faulty clutch position.

Shift to NEUTRAL and start.

3.3.2.3

Insufficient battery charge.

Check fluid level; recharge;
replace.

4.3.2(2)

Cable terminal contact failure.

Remove corrosion from termi-
nal; Retighten.

Faulty safety switch device.

Ask for repairs.

Faulty starter switch.

Ask for repairs.

Power lacking due to acces-
sory drive engaged.

Consult your dealer.

Engine cannot be turned
manually

Internal parts seized; broken.

Ask for repairs.

Abnormal Exhaust Color
Black smoke

Load increased.

Improper propeller matching

Contaminated intake silencer.

Clean element.

4.3.5(4)

Improper fuel.

Replace with recommended
fuel.

Faulty spraying of fuel injector.

Ask for repairs.

Incorrect intake/exhaust valve
clearance.

Ask for repairs.

White smoke

Improper fuel.

Ask for repairs.

3.1.1

Faulty spraying of fuel injector.

Ask for repairs.

Fuel injection timing off.

Ask for repairs.

Lubricating oil burns; exces-
sive consumption.

Ask for repairs.

Содержание 3YM20

Страница 1: ...known to the State of California to cause cancer birth defects and other reproductive harm California Proposition 65 Warning Battery posts terminals and related accessories contain lead and lead comp...

Страница 2: ...5 3 2 4 Supply Cooling Water 26 3 2 5 Cranking 27 3 2 6 Check and Re supply Lubricating Oil and Cooling Water 28 3 3 Operating your engine 28 3 3 1 Daily Start Up Inspection 28 3 3 2 How to Start the...

Страница 3: ...utor Make sure this manual is transferred to subsequent owners It should be considered as a permanent part of the engine and remain so Constant efforts are made to improve the quality and performance...

Страница 4: ...scribed in this manual Follow the warning signs below in this manual Pay special attention to parts containing these words and signs The descriptions captioned by are particularly important cautions f...

Страница 5: ...he wrong fuel could also cause the fuel injection pump and injector to fail due to lack of proper lubrication Be sure to check that you have selected the correct diesel fuel before filling the fuel ta...

Страница 6: ...of alcohol Never operate the engine when you are ill or not feeling well Battery Fluid Battery fluid is dilute sulphuric acid It can blind you if it gets in your eyes or burn your skin Keep the fluid...

Страница 7: ...miting devices such as the engine speed limit fuel injection limit etc Modification will impair the safety and performance of the product and shorten product life Also note that any troubles arising f...

Страница 8: ...insure safe operation warning device labels have been attached Their location is shown below and they should always be visible Please replace if damaged or lost Product Safety Labels No Part Code No...

Страница 9: ...o the engine should be easy to use and accessible for service To handle the drive equipment propulsion systems including the propeller and other onboard equipment be sure to observe the instructions a...

Страница 10: ...nameplate The nameplate shown below is attached to the marine gear Check the marine gear s model gear ratio oil used oil quantity and serial number Model rpm rpm rpm Gear Model Continuous power Speed...

Страница 11: ...mounting Fuel injection opening pressure MPa 12 3 0 98 0 Direction of rotation Crankshaft Counter clockwise viewed from stern Propeller shaft Ahead Clockwise viewed from stern Cooling system Fresh wa...

Страница 12: ...ing pres sure MPa 12 3 0 98 0 12 3 0 98 0 Direction of rotation Crankshaft Counter clockwise viewed from stern Counter clockwise viewed from stern Propeller shaft Ahead Clockwise viewed from stern Clo...

Страница 13: ...echanical cone clutch Dog clutch Reduction ratio For ward Reverse 2 21 3 06 2 62 3 06 3 22 3 06 2 64 2 64 Propeller speed For ward Reverse 1 min 1 1580 1140 1332 1140 1083 1140 1322 Lubrication system...

Страница 14: ...G Fuel feed pump C Fuel filter H Lubricating oil filter D Fuel injection pump I Marine gear E Dipstick C F G H I A B D E Non Operation Side A Seawater pump F Exhaust manifold C Filler cap G Starter mo...

Страница 15: ...ed pump C Fuel filter H Lubricating oil filter D Fuel injection pump I Marine gear E Dipstick A B E C D F G H I Non Operation Side A Seawater pump F Exhaust manifold C Filler cap G Starter motor D Eng...

Страница 16: ...ed pump C Fuel filter H Lubricating oil filter D Fuel injection pump I Marine gear E Dipstick A B E C D F G H I Non Operation Side A Seawater pump F Exhaust manifold C Filler cap G Starter motor D Eng...

Страница 17: ...water pump circulates fresh cooling water inside the engine The fresh water pump is driven by the V belt Seawater pump Pumps seawater from outside the vessel to the engine by passing through the engin...

Страница 18: ...TART STOP STOP 20 20 0 10 10 30 30 40 40 50 50 A H I J K B E F G Instruments equipment Functions Key switch Rotary switch with 4 posi tions OFF The switch key can be inserted or removed All electric c...

Страница 19: ...the alternator output is too low the lamp will come on When charge begins the lamp will turn off The alarm buzzer will not sound when the lamp comes on Coolant high temperature alarm When the tempera...

Страница 20: ...of a sin gle lever type for the remote control system If only the two lever type is available in the market operate the en gine at 1000 rpm or lower before engag ing and disengaging the marine gear cl...

Страница 21: ...01 by mass 10 Carbon residue content of the fu el It should not exceed 0 35 by vol ume Preferably it should be below 0 1 Aromatics total content of the fuel It should not exceed 35 by volume Preferab...

Страница 22: ...l lead to seizure of parts ab normal wear and shorten engine life 1 Selection of Engine Lubricating Oil Use the following Lubricating oil API Classification CD or better TBN value 9 or more The oil mu...

Страница 23: ...2 Do not mix lubricating oils of different types or brands Mixing may cause the chemical characteristics of the lubri cating oil to change and lubricating performance to drop reducing the en gine s l...

Страница 24: ...from sludge and or particles When handling LLC use protective gloves to avoid skin contact In case it comes in contact with your skin or eyes wash it out with clean wa ter 3 1 3 1 Handling of Coolant...

Страница 25: ...to engine problems 3 2 3 Supply Marine Gear Lubricat ing Oil 1 Remove the filler port cap at the top of the housing and fill with marine gear lubricating oil 2 Fill with oil to the upper limit on the...

Страница 26: ...emove the filler cap of the fresh water cooler by turning the cap counterclockwise 1 3 of a turn A Oil filler cap B Dipstick Fresh water line Seawater line 2 2 A Coolant tank D Fresh water pump B Drai...

Страница 27: ...or damage When the hose is not watertight an excessive amount of cooling water will be used 3 2 5 Cranking When the engine has not been used for a long period of time lubricating oil will not be distr...

Страница 28: ...on during operation Install ventilation windows ports or ventilators in the engine room Never touch or allow your clothes to touch the moving parts of the engine during oper ation If the front drive s...

Страница 29: ...g the engine Hot steam and water will spout out To remove the cap wait until the engine has cooled down wrap the cap with a cloth and loosen the cap slowly Af ter checking replace the cap and tighten...

Страница 30: ...me on See 2 5 1 4 6 Turn the key switch to start the engine Release the key switch when the en gine has started The alarm buzzer should stop and the alarm lamps go out 2 Starting at low ambient temper...

Страница 31: ...n the left side of the feed pump up and down 5 Allow the fuel containing air bubbles to flow out from the air vent bolt holes When the fuel coming out no longer contains bubbles tighten the air vent b...

Страница 32: ...ifting to the desired position Do not shift abruptly from FORWARD to RE VERSE or vice versa 3 Move the clutch handle accurately and fully into the FORWARD NEUTRAL and REVERSE positions 3 3 4 Cautions...

Страница 33: ...formance and prolonging the life of the engine Electric Operation Never turn off the battery switch during operation Damage to parts in the electric system will result 3 3 5 Engine shut down Stop the...

Страница 34: ...the water from in side Retighten the bolts when finished 3 Close the drain cocks plugs 2 Do not drain fresh water coolant in the cold season or before the long storage If LLC Long Life Coolant has no...

Страница 35: ...water from enter ing 9 During long term storage charge the battery once a month to com pensate for the battery s self dis charge 10 When storing an engine for long time run the engine periodically ac...

Страница 36: ...Yanmar Parts Be sure to use genuine Yanmar parts for consumable and replacement parts Use of other parts will reduce engine performance and shorten the life of the engine 5 Consult Your YANMAR Dealer...

Страница 37: ...ditions and are hard to establish definitively The following should be treat ed as a general standard only Section 4 3 gives a detailed explanation of which parts must be inspected and the procedure f...

Страница 38: ...g water pump seawater pump Replace the fresh water coolant Every year When long life coolant is used of a specified type see page 24 a replacement period of two years can be obtained Clean check the w...

Страница 39: ...check for oil leaks 7 Approximately 10 minutes after stop ping the engine remove the oil dip stick and check the oil level Add oil if the level is too low Beware of oil splashes if extracting the lub...

Страница 40: ...peed and L low speed respectively When there is deviation loosen the bracket for the remote control cable on the engine side and adjust Adjust the high speed stop position first and then adjust the lo...

Страница 41: ...is out of the limit adjust the V belt tension Loosen the set bolt and move the alternator to adjust the V belt tension 3 Be careful not to get any oil on the V belt Oil on the belt causes slipping and...

Страница 42: ...s may oc cur if the position of the fuel water separator position is higher than the fuel oil level in the fuel tank 3 After draining be sure to tighten the air bleeding plug 4 Be sure to bleed air in...

Страница 43: ...s or six months 1 Replace the Sail Drive Oil Refer to the operation manual of the sail drive for the procedure of the oil replacement 4 3 4 Inspection Every 150 Hrs or one year 1 Replace the Engine Oi...

Страница 44: ...aintenance are necessary 1 Impeller blades are cracked or nicked Edges or surfaces of the blades are marred or scratched Note The impeller must be replaced period ically every 1000 hrs 2 Wear plate is...

Страница 45: ...nt of the valve clearance is necessary and the adjustment re quires specialized knowledge and techniques Consult your Yanmar dealer or distributor 2 Inspect and Adjust the Fuel Injec tion Spray Condit...

Страница 46: ...propeller shaft This maintenance requires special ized knowledge and techniques Consult your Yanmar dealer or distrib utor Note Be sure to replace the Yanmar flexible engine mounts every 1000 hours o...

Страница 47: ...value for intake negative pressure 3 9 kPa 400 mmAq or low er 4 Permissible value for exhaust back pressure 14 7 kPa 1500 mmAq or lower 2 The fuel and lubricating oil used should be as follows 1 Fuel...

Страница 48: ...or EPA emission related parts are shown in the chart below Inspection and maintenance not noted below are the same see 4 2 and 4 3 Note The inspection and maintenance shown above are to be performed a...

Страница 49: ...olant temperature high alarm warning lamp goes on Insufficient water in coolant tank Check coolant and replen ish 3 2 4 Insufficient seawater causing temperature to rise Check seawater system Contamin...

Страница 50: ...erminal contact failure Remove corrosion from termi nal Retighten Faulty safety switch device Ask for repairs Faulty starter switch Ask for repairs Power lacking due to acces sory drive engaged Consul...

Страница 51: ...mber Purchase date Dealer s name and address Nature of the problem After reviewing all the facts involved you will be advised of what action can be un dertaken Please remember that your problem will m...

Страница 52: ...type 6 Fuel high pressure lines 7 Fuel injection nozzle 8 Oil pressure switch 10 Mixing elbow 11 Coolant tank Heat exchanger 12 Lubricating oil inlet filter 13 Main bearing 14 Seawater inlet 15 Coolin...

Страница 53: ...6 Coolant high temperature alarm 7 Water in sail drive seal alarm 8 Battery low charge alarm 9 Relay for 2 station Option 10 Fuse 3A 21 Glow plug 22 Engine stop solenoid 23 Stop relay 24 Starter rela...

Страница 54: ...1 MAKE YANMAR 2 THIS MACHINERY PART MUST NOT BE PUT INTO SERVICE UNTIL THE MACHINERY INTO WHICH IT IS TO BE INCORPORATED HAS BEEN DECLARED IN CONFORMITY WITH THE PROVISIONS OF THE DIRECTIVE IMPORTER...

Страница 55: ...President Yanmar Marine Int l...

Страница 56: ...President Yanmar Marine Int l...

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