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ENGINE THROTTLE ADJUSTMENT TEST
Service and repair should be performed by only Lincoln Electric factory trained personnel.
Unauthorized repairs performed on this equipment may result in danger to the technician or
machine operator and will invalidate your factory warranty. For your safety and to avoid elec-
trical shock, please observe all safety notes and precautions detailed throughout this manual.
If for any reason you do not understand the test procedures or are unable to perform the
test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshoot-
ing assistance before you proceed. Call 216-383-2531 or 1-800-833-9353 (WELD).
TEST DESCRIPTION
If the machine output is low, or high, this test will determine whether the engine is operating
at the correct speed (RPM) during both HIGH and LOW idle conditions. Directions for adjust-
ing the throttle to the correct RPM are given.
MATERIALS NEEDED
Slot head screw driver
7/16" wrench
10mm wrench
Strobe-tach, frequency counter, oscilloscope, white or red marking pencil
TROUBLESHOOTING & REPAIR
F-22 F-22
CLASSIC II
WARNING