Yanmar diesel tractor EF494T. OPERATOR'S MANUAL - part 14

 

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Yanmar diesel tractor EF494T. OPERATOR'S MANUAL - part 14

 

 

EF494T OM 

52 

Removing/mounting the side covers 

Removing  

(1)  

Open the bonnet.  

(2)  

Put the locking knobs in the vertical position 

(each forward and rear).  

(3)  

Remove the side covers. 

 

Mounting  

(1)  

Clamp the cover lower hooks (x 2).  

(2)  

Fix the cover top with the locking knob. 

 

 

 

3. 

Checking and supplying fuel 

 DANGER 

  Never smoke during re-fueling.  
  Never use a bare lamp/light during re-fueling.  
  After adding fuel, be sure to fasten the fuel cap and 

clean off the fuel spill.  

  Never refuel while the engine is running or still hot 

after stopping. A fire can result.  

 
Set the main key switch to ON. If the fuel gauge reads in 
the red region, open the fuel cap and add the fuel. 

 
(A) Red region  
(B) Fuel cap 

 

 

EF494T OM 

53 

4. 

Care for long period of storage 

 

 WARNING 

For stowage over a long period of time, remove the 
battery from the tractor and remove the main key. 
Otherwise, an accident may occur. 
 

 CAUTION 

Lock the clutch pedal for stowage over a long period of 
time. Otherwise, an accident may occur.  
If the tractor is not to be used over a lengthy period of 
time, take the following maintenance: 
 
(1)  

Place the tractor in a well ventilated place and 

remove the weight or other attachments. Remove the 
implement or lay it down on a wooden plate.  

 
(A) Good ventilation  

 
(2)  

Coat the exposed metallic parts with anti-rusting 

oil, engine oil or grease.  

(3)  

Fill the tank with fuel oil. Otherwise, moisture will 

develop in the tank and cause rust. Put the fuel cock 
in the CLOSE position. 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

(4) Fully charge the battery. It is recommended to 

detach the battery from the tractor and keep it in a 
dark cool place. If the battery is kept on the main 
body, disconnect the ground line (negative lead).  

(5) Remove the cooling water.  
(6) Cover the opening of the air cleaner, muffler or 

engine oil port with a polyethylene bag or the like to 
prevent the moisture from getting in. 

(7)  

To prevent the clutch from being rusted, fully 

depress the clutch pedal and put on the clutch pedal 
lock.  

(8)  

Fill the front and rear tires with air to normal 

pressure.  

 
The periodic check and inspection during stowage over 
a long period will ensure the preferable conditions of 
your tractor.  
 
NOTE:  
The battery is subject to self-discharge. Fully charge it 
up at least once a month. 

 

 
 
 
 
 
 

 

 

EF494T OM 

54 

PERIODIC INSPECTION AND ADJUSTMENT  

 

 WARNING 

Check or maintenance should be done with the tractor 
fixed on the flat ground, free from normal traffic. Pay 
attention not to topple the tractor. Put blocks to the 
wheels. 

 

 
 

 

 CAUTION 

  Do the periodic check and inspection every year. 

Replace the fuel pipes and power steering hoses 
every 2 years. Otherwise, an accident or machine 
damage may result.  

 
  Never fail to stop the engine before commencing 

checks and service. 

 
  Remount the covers which have been removed for 

maintenance. The revolving parts may catch a 
person nearby leading to a serious injury. 

 
Periodic inspection and maintenance in off-season will 
ensure the preferable conditions of your tractor. To keep 
your machine working in good conditions, ask your 
service shop for a regular inspection every year.  
 
It is recommended to replace fuel pipes, rubber hoses, 
and electrical wires every two years. 
 

IMPORTANT

 

  Only use the Yanmar genuine parts. 

Otherwise, service accidents can result. 

  We recommend the use of the Yanmar lubricants 

that are available from your local Yanmar dealer. 

 

 

 

 

EF494T OM 

55 

1. Check 

intervals 

x: Checks required 

CHECK 

ITEMS 

50 

h  100h 150h

200h

250h

300h

350h

400h

450h 500h 550h

600h

Engine lubrication oil  

Replace Replace 

 

Replace

 

Replace

 

Replace

 

Replace

 

 

Replace

Engine oil element 

Replace 

 

 

 

 

Replace

 

 

 

 

 

Replace

Transmission oil  

Replace 

x x x x 

Replace

x x x x x 

Replace

Line filter (Hydraulic) 

Replace

 

 

 

 

 

Replace

 

 

 

 

 

Replace

Transmission oil strainer 

Clean 

 

 

 

 

Clean

 

 

 

 

 

Clean

Fuel filter 

 

 

 

 

 

Replace

 

 

 

 

 

Replace

Water separator 

Drain Drain 

 

Drain

 

Clean

 Drain

 Drain  Clean

Radiator interior 

Clean the interior of radiator when replacing cooling water 

Cooling water  

Check before every work / Replacing every year 

Front axle oil  

Replace 

x x x x 

Replace

x x x x x 

Replace

Air cleaner element 

x x x x x 

Replace

x x x x x 

Replace

Radiator screen 

x x x x x x x x x x x x 

Clean cooling fan, 
radiator 

x x x x x x x x x x x x 

Battery liquid level 

Check before every work 

Battery liquid gravity 

 x  x   x  x  x  x 

Fuel piping, connections 

x x x x x x x x x x x x 

Rubber hoses  
(Power steering) 

x x x x x x x x x x x x 

Radiator hoses 

Replace hoses every two years 

Hydraulic rubber hoses 

Replace hoses every two years 

Fuel pipe, electric wires 

Replace pipes and wires every two years 

Electric wiring, 
connections 

x x x x x x  x x x x x x 

Greasing 

x x x x x x  x x x x x x 

Greasing, propeller shaft 

 

 

 

 

 

 

 

 

 

Apply 

 

 

Fastening of steering 
wheel fix nut 

 x  x   x  x  x  x 

Important nuts and bolts 

x x  x   x  x  x  x 

Cooling fan belt 

x x  x   x  x  x  x 

Engine breather pipe 

x x x x x x  x x x x x x 

Engine crank case 

 

 

 

 

 

 

 

 

 

 

 

Clearance of exhaust 
valve 

 

 

 

 

 

 

 

 

 

 

 

Fuel injection valve 

 

 

 

 

 

 

 

 

 

 

 

Generator, start motor 

x    x    x   

Hydraulic system 

x    x    x   

Fixing bolts of tires 

x x  x  x   x  x  x 

Break-in period is 50 hours. If not reached, take up 1 year instead.  
Items marked "Replace" should be replaced every two years even before suggested time intervals.  
Replace the power steering hoses every 2 years. 

 

 

 

 

 

 

 

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