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MAINTENANCE
Safety Precautions
-22 -
Have qualified personnel do the maintenance
work. Turn the engine off before working inside
the machine. In some cases, it may be
necessary to remove safety guards to perform
required maintenance. Remove guards only
when necessary and replace them when the
maintenance requiring their removal is
complete. Always use the greatest care when
working near moving parts.
Do not put your hands near the engine cooling
blower fan. If a problem cannot be corrected by
following the instructions, take the machine to
the nearest Lincoln Field Service Shop.
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ELECTRIC SHOCK can kill.
• Do not touch electrically live parts or
electrode with skin or wet clothing.
• Insulate yourself from work and
ground
• Always wear dry insulating gloves.
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ENGINE EXHAUST can kill.
• Use in open, well ventilated areas or
vent exhaust outside.
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MOVING PARTS can injure.
• Do not operate with doors open or
guards off.
• Stop engine before servicing.
• Keep away from moving parts.
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See additional warning information at
front of this operator’s manual.
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WARNING
Engine Adjustments
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.
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Adjustments to the engine are to be made only by a
Lincoln Service Center or an authorized Field Service
Shop.
WARNING
Routine Maintenance
1. At the end of each day’s use, refill the fuel tank to
minimize moisture condensation in the tank.
Running out of fuel tends to draw dirt into the fuel
system. Also, check the crankcase oil level and
add oil if indicated.
2. OIL
- Maintenance schedule for changing the oil
and oil filter after break-in:
The above schedule is for normal operating condi-
tions. More frequent oil changes are required with
dusty, high temperature, and other severe operating
conditions. Refer to the maintenance section of the
Engine Owner’s Manual for more information.
Engine life will be reduced if the oil and oil filter
are not changed according to the manufacturer’s
recommendation.
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3. Air Cleaner
- With normal operating conditions, the
maintenance schedule for cleaning and re-oiling
the foam pre-filter is every 25 hours and replace-
ment of the air cleaner filter every 100 hours. More
frequent servicing is required with dusty operating
conditions. Refer to maintenance section of the
Engine Owner’s Manual for more information.
4. Refer to the maintenance section of the Engine
Owner’s Manual for the maintenance schedule for
spark plug servicing, cooling system servicing, and
fuel filter replacement.
Make certain that the oil filler cap is securely
tightened after checking or adding oil. If the cap is
not tight, oil consumption can increase signifi-
cantly which may be evidenced by white smoke
coming from the exhaust.
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5. Blow out the machine with low pressure air periodi-
cally. In particularly dirty locations, this may be
required once per week.
6. Output Ranger Selector and Polarity Switches:
Switch contacts should not be greased. To keep
contacts clean, rotate the switch through its entire
range frequently. Good practice is to turn the han-
dle from maximum to minimum setting twice each
morning before starting to weld.
CAUTION
CAUTION
Oil
Oil Filter
Kohler
CH20S
100 hr
200 hr
Onan
P218
50 hr
100 hr