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D-4
MAINTENANCE
D-4
FUEL FILTER
1. Check the fuel filter for water accumulation or sedi-
ment.
2. Replace the fuel filter if it is found with excessive
water accumulation or sediment.
ENGINE ADJUSTMENT
Adjustments to the engine are to be made only by a
Lincoln Service Center or an authorized Field Service
Shop.
BATTERY MAINTENANCE
To access the battery, Remove the 2 screws from the
rear battery tray using a screwdriver or a 3/8" socket.
Slide the battery tray out only far enough to access
the battery terminals.
GASES FROM BATTERY can explode.
• Keep sparks, flame and cigarettes
away from battery.
To prevent EXPLOSION when:
• INSTALLING A NEW BATTERY — disconnect
negative cable from old battery first and con-
nect to new battery last.
• CONNECTING A BATTERY CHARGER —
remove battery from welder by disconnecting
negative cable first, then positive cable and
battery clamp. When reinstalling, connect
negative cable last. Keep well ventilated.
• USING A BOOSTER — connect positive lead to
battery first then connect negative lead to neg-
ative battery lead at engine foot.
BATTERY ACID can burn eyes and
skin.
• Wear gloves and eye protection
and be careful when working near
battery.
• Follow instructions printed on battery.
RANGER 250
OVERSPEED IS HAZARDOUS
The maximum allowable high idle speed for this
machine is 3750 RPM, no load. Do NOT tamper with
governor components or setting or make any other
adjustments to increase the maximum speed. Severe
personal injury and damage to the machine can result
if operated at speeds above maximum.
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 (0.12 kg)
of baking soda and 1 quart (0.9461liter) 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 accumula-
tion 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 con-
nect battery cables to the battery, be sure the polarity
is correct. Improper polarity can damage the charging
circuit. The RANGER 250 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
battery cable first and the negative cable last. Failure
to do so can result in damage to the internal charger
components.
Follow the instructions of the battery charger manu-
facturer for proper charger settings and charging time.
SERVICING OPTIONAL SPARK
ARRESTER
Clean every 100 hours.
MUFFLER MAY BE HOT
• ALLOW ENGINE TO COOL BEFORE INSTALLING
THE SPARK ARRESTER!
• DO NOT OPERATE ENGINE WHILE INSTALLING
THE SPARK ARRESTER!
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WARNING
WARNING