Yanmar diesel tractor EF494T. OPERATOR'S MANUAL - part 15

EF494T OM 

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2. 

Oil and grease 

OIL, GREASE 

TYPE 

Fuel  

Diesel fuel only 

Engine oil 

SAE 30 or 40 API Grade CD or better 

Grease Multipurpose 

Grease 

Transmission oil, Hydraulic 
system oil 

TF-500 Transmission fluid 

* At temperature below – 10°C, use Super No.3 light oil. 

 
3. Oil and water volume 

(Unit: liters) 

 EF453T  OIL 

TYPE 

Fuel 

40 

Diesel light oil 

Cooling Radiator 

4 

Anti-rusting 

fluid 

water Sub-tank  0.45 

Anti-rusting 

fluid 

Engine oil 

5.3 

SAE 30 or 40 

Transmission oil 

27 

TF-500A Transmission fluid 

Front axle oil 

7.5 

TF-500A Transmission fluid, SAE 90 

 

 

4. Replacing 

oil 

 DANGER 

Never add oil while the engine is warm or running.  
A fire may occur. 
 

 CAUTION 

Never add oil just after stopping the engine. You may be 
burned. 

 

 

Engine oil 

Check  

Draw out the oil gauge on the right side of the engine and 
wipe off oil with a cloth. Reinsert and remove it again to 
see if the oil level is within the upper and lower marks. 
 
If insufficient, add the new oil as much as the normal level 
through the supply port.  
 

(A) Oil gauge  
(B) Oil supply port  

 
NOTE:  
Check the oil level before the engine starts or when the 
engine is cool. 

 
 

 

Replacing oil

 

Remove remaining oil through the drain plug on the lower 
part of the engine. Add the new oil through the oil supply 
port. Select a proper type of engine oil and replace it 
periodically considering the temperature and operating 
conditions.  
 

(A) Drain plug 

 

 

 

 

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Transmission oil 

Check  

Draw out the oil gauge on the rear part of the transmission 
and check the oil level. The level should be between the 
upper and lower limits. If insufficient, add the new oil to the 
normal level. Also check for leaks. 

 
(A) Oil supply port  
(B) Oil gauge 

 

Replacing oil  

Remove the remaining oil through the drain plugs on the 
bottom of the transmission case. Removal is easy if the 
transmission case is warm. Add the new oil through the 
supply port on the rear part. 
 
  Transmission oil is commonly used with hydraulic oil 

and power steering oil. 

 
  Use Yanmar transmission fluid TF-500 or equivalent for 

transmission oil. 

 

(A) Drain plug 

 

Cleaning transmission oil strainer 

 
When replacing transmission oil, wash the oil strainer with 
diesel fuel. 
 
 

(A) Oil strainer 

 

 

Equivalent to TF-500A 

SUPPLIER BRAND 

NAME 

Mobil 

Mobil Fluid 425, 424 

Castrol 

Agricastrol MP, CASTROL UTF 

Shell 

Tellus Oil 32 or 37, Donax TD 

Ford ESN-M-2C-134A 

Esso 

Torque Fluid 56 

John Deere 

J20B, J14A 

BP Tractran 

UTH 

 
 

 

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Front axle oil 

Check  

Remove the oil gauge plug on the top of the front axle. 
Wipe off the gauge rod and reinsert it without screwing. 
Redraw it and see if the oil level is within the upper and 
lower marks. If insufficient, add the new oil through the oil 
supply port to the normal level. Check also for oil leak. 
 

(A) Oil gauge plug  
(B) Oil supply port 

 

Replacing oil  

Remove oil through center drain plug on the lower part of 
the front axle and drain plugs on the bottom of the right and 
left gear cases. Add oil through the right port.  
 
Use Yanmar TF500A transmission fluid, or carrier red 80B, 
or equivalent for front axle oil. 
 

(A) Center drain plug  
(B) Gear case drain plug 
 

 

 

5. 

Replacing oil filter elements 

 

Engine oil element 

Replace the engine oil element at intervals of 300 hours or 
every 2-3 times of replacing the engine oil.  
 

(A) Turn left to detach  
(B) Oil element  

 

Replacing oil  

(1) Remove engine oil and turn the cartridge anticlockwise 

with a filter wrench. 

(2) Apply a slight coating of oil on the rubber ring on the 

bottom of the new cartridge. Mount the cartridge with a 
filter wrench.  

(3) After replacing the engine oil, run the engine until the 

engine lubricating oil lamp goes off.  

(4) When the engine lubricating oil lamp goes off, again 

check the oil level with the gauge. If insufficient, add the 
oil. 

 

 
 
 

 
 

 

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Line filter (Transmission oil element) 

The line filter is of a cartridge type. Replace it with a new 
one at intervals of 300 hours thence.  
 

(A) Line filter 

 

Replacement 

(1) Remove the transmission oil and remove the cartridge 

by turning it anticlockwise.  

(2) Apply a slight coating of oil on the rubber ring on the 

bottom of the new cartridge. Mount the cartridge 
securely.  

(3) After replacing the transmission oil, idle the engine and 

check the oil level with an oil gauge. If insufficient, add 
the oil. 

 
 

 

 

 
 

6. Engine 

coolant 

 DANGER 

Never open the radiator cap when the engine is hot.  Hot 
steam and boiled water may blow out and you may suffer 
severe burns.  

 
Check  

Open the bonnet and check water level in the sub-tank 
whether water is between “FULL” and “LOW” marks. If 
water is insufficient, remove sub-tank cap and add clean 
water.   
Be sure to close the sub-tank cap firmly.  

 
 

 

 

 

[A] Sub-tank 
[B] Sub-tank cap 
[C] Upper limit (FULL) 
[D] Lower limit (LOW) 

 
Replacing coolant 

(1) Remove the coolant drain plug and drain cooling 

water.  It is easier for draining to open radiator cap. 

 
(2) Clean the inside of radiator with tap water until dust 

or rust does not come out.   
It is suggested to use radiator detergent.  Fill radiator 
with water and detergent and run the engine in idle 
speed for more than 15 minutes.  Drain the water. 

 
(3) Fill radiator with clean water.   

It is recommended to mix anticorrosive.  Run the 
engine for about 5 minutes in idle speed to mix water 
and anticorrosive. 

 
 

 IMPORTANT 

The mixing ratio of anticorrosive varies depend on 
manufacturer.  Follow the instruction of its manufacturer. 
 

 

(A) Coolant drain plug