OPERATION & MAINTENANCE MANUAL STE35SR
For details of the checks when operating the engine, see "Maintenance of the Engine" and
pay careful attention to safety.
Are the inspection and maintenance items working properly? Is there any leakage of fuel or oil
when the engine speed is raised?
Lubricants, Fuels and Coolants
Lubricants
Oil is used in the engine and hydraulic equipment under extremely severe conditions (high
temperature, high pressure), and deteriorates with use.
Always use oil that matches the grade and maximum and minimum ambient temperatures
recommended in the Operator’s Manual. Even if the oil is not dirty, always change the oil at
the specified interval.
Oil corresponds to blood in the human body, always be careful when handling it to prevent
any impurities (water, metal particles, dirt, etc.) from getting in. When storing or adding oil,
take special care not to let any impurities in.
Never mix oils of different grades or brands.
Always add the specified amount of oil. Having too much oil or too little oil are both causes of
problems.
If the oil in the work equipment is not clear, there is probably water or air getting into the circuit.
In such cases, please contact your CFG distributor.
When changing the oil, always replace the related filters at the same time.
We recommend you have an analysis made of the oil periodically to check the condition of the
machine. For those who wish to use this service, please contact your CFG distributor.
When using commercially available oil, it may be necessary to reduce the oil change interval.
Fuel
The fuel pump is a precision instrument, and if fuel containing water or dirt is used, it cannot
work properly.
Be extremely careful not to let impurities get in when storing or adding fuel.
Always use the fuel specified for the temperature in the Operator’s Manual.
If the fuel is used at temperatures lower than the specified temperature (particularly at
temperatures below -15°C (5°F), the fuel will solidify.
To prevent moisture in the air from condensing into water in the fuel tank, fill the fuel tank at
the end of each day's work.
Before starting the engine, or when 10 minutes have passed after adding fuel, drain the
sediment and water from the fuel tank.
If the engine runs out of fuel, or if the filters have been replaced, it is necessary to bleed the
air from the circuit.
Storing Oil and Fuel
Keep indoors to prevent any water, dirt, or other impurities from getting in.
When keeping drum cans for a long period, put the drum on its side so that the filler port of the
drums is at the side to prevent moisture from being sucked in.
If drums have to be stored outside, cover them with a waterproof sheet or take other
measures to protect them.
To prevent any change in quality during long-term storage, be sure to use in the order of first
in - first out (use the oldest oil or fuel first).
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