MMD Equipment 25S-3A3 - Manual (Page 56)

6. Periodic Inspection/Maintenance
6-14
6.10 Maintenance Every 2000 Hours
6.10.1 Clean Inside the Radiator
When the inside of radiator and water pipings of an engine are dirty with scale and rust,
its cooling efficiency will drop. Clean the cooling system periodically.
Ask you nearest dealer for cooling system cleaning.
6.10.2 Clean Inside the Fuel Tank
Ask your nearest dealer for cleaning the inside of fuel tank.