© Feb. 2023 72 TB20J Plus Maintenance Manual
POWER SYSTEM
Fig 19 Fuel level (platform controller)
Fill the Fuel Tank
Turn off the engine, fill with correct diesel fuel according
to the Oil Requirements , and never overfill the tank.
• Do not mix gasoline, alcohol, or their mixture
with diesel fuel.
• Do not refuel the machine while the engine is
running.
• Due to the extremely accurate tolerance match
of the diesel injection system, it is critical to
keep the fuel clean and free of dirt or water.
The dirt or water entering the combustion sys-
tem can cause severe damage to the fuel pump
and injectors.
Replace the Fuel Filter Element
It is recommended to replace the fuel filter element
every 6 months or after 500 hours of operation.
NOTICE
Do not pre-fill the filter, or the filter may be
contaminated.
Fig 20 Fuel filter
1. To the left
2. To the right
1. Stop the engine and allow it to cool.
2. Close the fuel cock of the fuel filter.
3. Remove the fuel filter using a filter wrench to turn it
to the left. When removing the fuel filter, carefully
hold it to prevent the fuel from spilling. Wipe up all
spilled fuel.
4. Clean the filter mounting surface and apply a small
amount of diesel fuel to the gasket of the new fuel
filter.
5. Install the new fuel filter. Hand-tighten it to the right
until it comes in contact with the mounting surface.
Use a filter wrench to tighten it.
6. Open the fuel cock of the fuel filter.
7. Prime the fuel system.
8. Check for fuel leaks.
Drain and Clean the Fuel Pre-filter
It is recommended to drain the fuel pre-filter daily and
replace the fuel pre-filter element every 6 months or
after 500 hours of operation.
Fig 21 Fuel pre-filter
1. Fuel pre-filter
2. Closed
3. Fuel cock
4. Drain plug
Empty the fuel pre-filter:
1. Turn off the engine.
2. Place an appropriate oil-collecting container under
the drain plug.
3. Close the fuel cock.
4. Loosen the drain plug to allow the liquid to flow out
completely. (if no water flows out after the drain plug
is loosened, loosen the venting screw on the top of
the fuel pre-filter by turning it counterclockwise 2-3
turns with a screwdriver. Ensure to tighten the vent-
ing screw after draining).
5. Hand-tighten the drain plug.
6. Open the fuel cock.
7. Prime the fuel system.
8. Check for fuel leaks.
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