Delco DH 1302 Manuel D'instructions page 14

FAULTS
Excessive smoke from exhaust.
Inadequate detergent suction.
Water leakage from head.
Water in the oil.
N.B. To reset the indicators, rotate the ON/OFF Switch (fig. 7A) to the "O" position and then to the "I" position.
For maintenance and/or repairs, use only original spare parts which offer the greatest characteristics of quality and
reliability. Failure to use original spare parts frees the manufacturer from all responsibility.
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CAUSES
Incorrect combustion.
Fuel contaminated with impurities or
water.
Tap closed.
No detergent.
Element or tube clogged.
Gaskets worn.
Excessive humidity in atmosphere.
IMPORTANT:
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REMEDIES
Clean or replace diesel filters.
Contact Service Center.
Empty the tank and clean thoroughly.
Clean diesel filters.
Open.
Fill the detergent tank.
Contact Service Center.
Contact Service Center.
Replace oil.