MAINTENANCE
D-8 D-8
RANGER 305D
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CLEANING THE BATTERY

Keep the battery clean by wiping it with a damp cloth
when dirty. If the terminals appear corroded, discon-
nect the battery cables and wash the terminals with an
ammonia solution or a solution of 1/4 pound (0.1113
kg) of baking soda and 1 quart (0.9461) of water. Be
sure the battery vent plugs (if equipped) are tight so
that none of the solution enters the cells.
After cleaning, flush the outside of the battery,the bat-
tery compartment, and surrounding areas with clear
water.Coat the battery terminals lightly with petroleum
jelly or a non-conductive grease to retard corrosion.
Keep the battery clean and dry.Moisture accumulation
on the battery can lead to more rapid discharge and
early battery failure.

CHECKING THE ELECTROLYTE LEVEL

If battery cells are low, fill them to the neck of the filler
hole with distilled water and recharge. If one cell is low,
check for leaks.

CHARGING THE BATTERY

When you charge, jump, replace, or otherwise connect
battery cables to the battery,be sure the polarity is cor-
rect. Improper polarity can damage the charging cir-
cuit. The RANGER 305D positive (+) battery terminal
has a red terminal cover.
If you need to charge the battery with an external
charger, disconnect the negative cable first, then the
positive cable before you attach the charger leads.
After the battery is charged, reconnect the positive bat-
terycable first and the negative cable last. Failure to do
so can result in damage to the internal charger com-
ponents.
Follow the instructions of the battery charger manufac-
turer for proper charger settings and charging time.

OPTIONALSPARKARRESTOR

MUFFLER MAYBE HOT.
Allow the engine to cool before installing the spark
arrestor!
Clean the spark arrestor after every 100 hours of use.
WELDER / GENERATORMAINTENANCE
STORAGE: Store the RANGER 305D in clean, dry
protected areas.
CLEANING: Blow out the generator and controls peri-
odically with low pressure air. Do this at least once a
week in particularly dirty areas.
RECEPTACLES: Keep the electrical receptacles in
good condition. Remove any dirt, oil, or other debris
from their surfaces and holes.
CABLE CONNECTIONS: Check the welding cable
connections at the weld output terminals often. Be
sure that the connections are always firm.
BRUSHREMOVALAND REPLACEMENT:Itʼs normal
for the brushes and slip rings to wear and darken
slightly. Inspect the brushes when a generator over-
haul is necessary.
Do not attempt to polish slip rings while the engine is
running.
Service and Repair should only be performed by
Lincoln Electric Factory Trained Personnel.
Unauthorized repairs performed on this equipment
may result in danger to the technician and machine
operator and will invalidate your factory warranty.For
your safety and to avoid Electrical Shock, please
observe all safety notes and precautions.
WARNING
WARNING
CAUTION