Lincoln Electric IM751 POWER-ARC 4000 - Manual (Page 34)

D-2 MAINTENANCE D-2
FUEL: At the end of each day’s use, refill
the fuel tank to minimize moisture conden-
sation and dirt contamination in the fuel line.
ENGINE ADJUSTMENTS
OVERSPEED IS HAZARDOUS - The maximum
allowable high idle speed for this machine is 3750
RPM, no load. DO NOT tamper with the governor
components or setting or make any other adjust-
ments 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.
Do not use petroleum solvents such as kerosene
to clean the air cleaner. They may cause deterio-
ration of the air cleaner. DO NOT OIL THE AIR
CLEANER OR USE PRESSURIZED AIR TO CLEAN
OR DRY THE AIR CLEANER.
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To service the pre-cleaner:
1. Wash in liquid detergent and water.
2. Squeeze dry in a clean cloth.
3. Saturate in clean engine oil.
4. Squeeze in a clean, absorbent cloth to remove all
excess oil.
CLEAN ENGINE: Remove dirt and debris with a cloth
or a brush. Do not clean with a forceful spray of
water. Water might contaminate the fuel system.
Periodically clean the muffler area to remove
combustible debris.
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Clean Rotating Screen: If your POWER-ARC 4000 is
equipped with an engine that has a rotating screen,
you should clean it as often as needed, to remove dirt
or debris that may collect on the screen. A dirty
screen can result in engine overheating and damage.
(See Figure D.3).
FIGURE D.3 - CLEAN ROTATING
SCREEN/FINGER GUARD/DEBRIS GUARD
1. ROTATING SCREEN
CLEAN COOLING SYSTEM: See Figure D.4. Clean
the internal cooling fins and surfaces to prevent over-
speeding, overheating, and engine damage. Clean
every 100 operating hours or as often as necessary.
FIGURE D.4 - CLEAN COOLING SYSTEM
1. REMOVE DIRT FROM THESE AREAS.
POWER-ARC 4000
CAUTION
CAUTION
1
1
WARNING