Lincoln Electric IM694 RED-D-ARC D503K 5+3 HO - Manual (Page 17)

D-3 MAINTENANCE D-3
D503K 5+3 HO
HARDWARE
Both English and Metric fasteners are used in this
welder.
NAMEPLATES
Whenever routine maintenance is performed on this
machine - or at least yearly - inspect all nameplates
and labels for legibility. Replace those which are no
longer clear. Refer to the parts list for the replacement
item number.
PURGING AIR FROM THE FUEL SYSTEM
Keep fuel clear of open flames or arcs, allow
engine to cool before working on the fuel system.
Wipe up any spilled fuel and do not start engine
until fumes clear.
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If the engine is running rough and you suspect air has
been trapped in the fuel system, (EG. the engine was
allowed to run out of fuel) perform the following steps
using qualified personnel:
1. Verify that there is sufficient fuel in the fuel tank.
(Minimum of .50” of fuel).
2. Ensure that the fuel sediment bowl valve is open.
(located on underside of fuel tank).
3. Open the air bleed screw on the fuel injection
pump. Using the starter, crank the engine until
engine starts. (use pre-heat if needed. DO NOT
CRANK STARTER FOR MORE THAN 1 MINUTE
OUT OF 5 MINUTES.
4. Close air bleed screw when fuel is observed
returning to the fuel tank. (Remove fuel cap to
observe).
WARNING