Doosan DX60R Shop Manual page 208

Make sure that the combined total resistance of the battery
cable in both directions between the starter motor and the
battery is within the value indicated in the Battery Cable
Resistance chart in the Electric Wiring Section of this
manual. The starter motor will malfunction and fail if the
resistance is higher than the specified value.
Removing the battery cables or the battery while the engine is
operating may cause damage to the current limiter depending
on the electrical equipment being used. This situation could
cause loss of control of output voltage. The continuous high
voltage of 23-24 volts (for 5,000 rpm dynamo) will damage the
current limiter and other electrical equipment.
Reversing the battery cable connections at the battery or on
the engine will destroy the SCR diode in the current limiter.
This will cause the charging system to malfunction and may
cause damage to the electrical harnesses.
Avoid damage to the turbocharger or the engine. Do not
spray blower wash fluid or water too quickly.
Use short strokes from a spray bottle to inject blower wash
fluid or water into the turbocharger.
Spraying too much wash fluid or water, or spraying too
quickly will damage the turbocharger.
Do not allow any material to fall into the oil lines or the oil
inlet and outlet ports of the turbocharger.
If the waste valve does not meet specifications, replace the
turbocharger or have it repaired by a qualified repair facility.
Engine
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CAUTION
MEMO
SP001693