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109821_0508

(2) Coolant Temperature

The engine performance is adversely affected if engine

coolant temperature is too hot or too cold.

The normal coolant temperature is 75 to 90°C (167 to

194°F).

Overheating

WARNING: 

If the Engine Coolant Temperature

Gage shows an overheat condition or you have
other reason to suspect the engine may be over-
heating, continued operation of the engine (other
than as spelled out here) even for a short period of
time may result in a fire and the risk of personal
injury and severe equipment damage.

If you see or hear escaping steam or have other reason to

suspect there is a serious overheat condition, stop and park the
equipment as soon as it is safe to do so and then turn off the
engine immediately and get out of the equipment.

The engine cooling system may overheat if the engine

coolant level is too low, if there is a sudden loss of engine
coolant (such as hose splitting), or if other problems occur.  It
may also temporarily overheat during severe operating condi-
tion such as:

1. Climbing a long hill on a hot day.
2. Stopping after high rpm.

If the Engine Coolant Temperature Gage shows an over-

heat condition, or you have reason to suspect the engine may
be overheating, take the following steps:

1. If your air conditioner (if equipped) is on, turn it off.  And

turn on the heater.

2. Don't turn off your engine.
3. With the transmission in Neutral, increase the engine

speed to about one-half full operating speed or 1200
RPM, maximum.  Bring the idle speed back to normal
after five minutes.

If the engine coolant temperature does not start to drop

within a minute or two:

4. Let the engine run at normal idle speed for two or three

minutes.  If the engine coolant temperature does not start
to drop, turn off the engine and get out of the equipment
then proceed as follows:

WARNING: 

To help avoid being burned -

1. Do not open the engine access cover if you see
or hear steam or engine coolant escaping from the
engine compartment.  Wait until no steam or
engine coolant can be seen or heard before open-
ing the engine cover.
2. Do not remove the radiator cap or engine cool-
ant reserve tank cap if the engine coolant in the
tank is boiling.  Also do not remove the radiator
cap while the engine and radiator are still hot.
Scalding fluid and steam can be blown out under
pressure if either cap is taken off too soon.

If no steam or engine coolant can be seen or heard, open

the engine access cover.  If the engine coolant is boiling, wait
until it stops before proceeding.  Look at the see-through
reserve tank.  The engine coolant level should be between the
"MAX" and "MIN" marks on the reserve tank.  If necessary,
pour engine coolant into the reserve tank only, never directly
into the radiator.  Also, do not check engine coolant level at
the radiator.

Make sure the fan belts are not broken, or off the pulleys,

and that the fan turns when the engine is started.

If the engine coolant level in the reserve tank is low, look

for leaks at the radiator hoses and connections, heater hoses
and connections, radiator, and water pump.  If you find major
leaks, or spot other problems that may have caused the engine
to overheat, do not run the engine until these problems have
been corrected.  If you do not find a leak or other problem,
carefully add engine coolant to the reserve tank.  (Engine
coolant is a mixture of ethylene glycol antifreeze and water.
See "Engine Care in cold season" in Section 8 for the proper
antifreeze and water mixture.)

WARNING: 

To help avoid being burned, do not

spill antifreeze or engine coolant on the exhaust
system or hot engine parts.  Under some condi-
tions the ethylene glycol in engine coolant is com-
bustible.

If the engine coolant level in the reserve tank is at the cor-

rect level but there is still an indication on the instrument
panel of an overheat condition:

You must let the engine cool first.

 You may then add

engine coolant directly to the radiator.

Once the Engine Coolant Temperature Gauge no longer

indicates an overheat condition, you can resume operating at a
reduced speed.  Return to normal operating after about ten
minutes if the gage pointer does not again show an overheat
condition.

If no cause for the overheat condition was found, see a

qualified service technician.

Overcooling

The engine operation at low coolant temperature will not

only increase the oil and fuel consumption but also will lead
to premature parts wear which may result in engine failure.

(3) Engine Hour meter (Engine Operation Hour Indi-
cating) (If so equipped)

This meter indicates the engine operation hours.  Make

sure that the meter is always working during engine opera-
tion.

Periodic engine maintenance is scheduled based on operat-

ing hours indicated on the hourmeter.

(4) Liquid and Exhaust Leakages

Check for lubricant, fuel, coolant and exhaust leaks.

Summary of Contents for E673L

Page 1: ...109821_0508 1 Shibaura Diesel Engine Operation Manuals E673L S773L N843 N843L N844L N844L T Supported by Hustler Turf Equipment Company and Excel Industries Inc...

Page 2: ...2 109821_0508...

Page 3: ...n Should your engine require servicing please contact your nearest Authorized Hustler Turf Dealer He knows your engine best and is ready to meet your needs All information illustrations and specificat...

Page 4: ...er a claim may be denied if your failure to perform maintenance resulted in the failure of a warranted part Receipts covering regular maintenance should be retained in the event of questions and these...

Page 5: ...Precautions during engine operation 13 6 5 Engine stopping 15 6 6 Run in break in for new engine 15 6 7 Engine care for over cooling 15 6 8 Starting the engine after being left unused for a long peri...

Page 6: ...ld hurt you or other people In the warning area we tell you what the hazard is Then we tell you what to do to help avoid or reduce the hazard Please read these warnings If you don t you or others coul...

Page 7: ...2600 24 3kW 2600 34 2hp 3600 25 5kW 3000 44 9hp 2600 33 5kW 2600 46 3hp 3600 35 0kW 3000 54 7hp 2600 40 8kW 2600 56 8hp 3600 42 4kW 3000 Rated output 13 8hp 3000 10 3kW 3000 15 4hp 3600 11 5kW 3600 2...

Page 8: ...e that diesel fuel may foam during a fill up This can cause the automatic pump nozzle to shut off even though your tank is not full CAUTION Do not use home heating oil or gaso line in your diesel engi...

Page 9: ...ality of engine oil may largely affect engine perfor mance startability and engine life Use of unsuitable engine oil will result in piston ring pis ton and cylinder seizure and accelerate the sliding...

Page 10: ...shop towel or cloth Insert it fully and remove it gently again Check the oil level by the level marks on the dipstick The oil level must be between the Max level mark and the Min level mark as illustr...

Page 11: ...Single belt of similar size must not be used as a substitute for a matched belt set Otherwise premature belt wear would result because of uneven belt length 3 Coolant Level Check 1 The coolant level m...

Page 12: ...gets in your eyes flush with large amounts of water at once Then consult a physician immedi ately 3 Since batteries produce hydrogen gas do not make a spark or use fire near the battery 4 When handli...

Page 13: ...o engine noise and if any abnormal noise is heard check the engine to detect the cause Check the fuel combustion condition by exhaust smoke color The exhaust smoke color after engine warming up and at...

Page 14: ...under pressure if either cap is taken off too soon If no steam or engine coolant can be seen or heard open the engine access cover If the engine coolant is boiling wait until it stops before proceedi...

Page 15: ...operating temperature During this time do not race the engine 2 Also do not operate the engine with rapid acceleration rapid machine starting and continuous high speed opera tion 6 7 Engine Over Cooli...

Page 16: ...ne to allow air to escape 2 MODELS E673L S773L N844L N844L T ONLY Add engine oil slowly Pouring the oil too quickly can result in the oil overflowing into the air breather valve and then into the air...

Page 17: ...diesel fuel which is contami nated with water See Diesel Fuel in Section 1 5 Used Engine Oil WARNING Used engine oil contains harmful contaminants that have caused skin cancer in labo ratory animals A...

Page 18: ...the engine and refill with the coolant 4 Cleaning Outside of Radiator Mud or dried grass caught between radiator fins will block the air flow resulting in lower cooling efficiency Clean the radiator...

Page 19: ...o the closed position CAUTION If the cup is removed without turning the lever as instructed the fuel may flow out 2 Loosen the ring nut remove the cup and take out the ele ment 3 Clean the cup install...

Page 20: ...or grease to the bat tery post 2 Alternator Servicing 1 The polarity of the alternator is negative grounding type When an inverted circuit connection takes place the cir cuit will be in short circuit...

Page 21: ...t the clearance of the remaining unadjusted valves I Inlet E Exhaust Model N844L N844L T 3 Using the table below reference position of 1 piston and adjust as necessary measure and adjust the clearance...

Page 22: ...e cooling system and because of its low boiling point 2 High silicate antifreeze is not recommended because it could cause serious silica gelation prob lems 3 Usage and mixing ratio etc should be foll...

Page 23: ...Initial 50 Every 100 Every 200 Every 400 Every 600 Every 1000 Remarks 1 Oil level and condition of oil X See EXPLANATION OF MAINTENANCE SHEDULE 2 Oil leakage check X 3 Oil pressure warning lamp X 4 E...

Page 24: ...rain the sedimented water in fuel filter every 100 hours 8 Fuel filter element replacement Change element every 200 hours 9 Injection nozzle check Check and adjust injection opening pressure and spray...

Page 25: ...ternator Check wear of brush and commutator every 1000 hours check and cleaning 24 Wiring and connection check Check according to the equipment specifications reference every 1000 hours 25 Preheating...

Page 26: ...ety relay failure No fuel injection Fuel is injected but engine does not start No fuel in the fuel tank Clogged fuel filter element or strainer Air in the fuel system Feed pump malfunction Control rac...

Page 27: ...iorated Insufficient fuel supply Air in the fuel system Clogged fuel filter element Uneven fuel injection amount between plungers Deteriorated governor spring Incorrect valve clearance adjustment Dete...

Page 28: ...ge lncorrect injection pressure adjustment lntake valve clearance Incorrect spray condition adjustment Nozzle holder misalignment Insufficient fuel supply to the injection pump Cylinder bore wear Lack...

Page 29: ...ne oil burning or detonation See dealer Overload Reduce the load Clogged air cleaner Check and change Improper fuel Check and change Excessive fuel injection See dealer Improper function of fuel injec...

Page 30: ...are based on the latest product information available at the time of publication The right is reserved to make changes at any time without notice OPERATION MANUAL INDUSTRIAL E673L S773L N843 N843L N8...

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