Lincoln Electric CLASSICII SVM125-A Service Manual page 73

F-23
ENGINE THROTTLE ADJUSTMENT TEST (continued)
TEST PROCEDURE
Strobe Tach Method
1. Turn the engine welder OFF.
2. Unlatch, lift and secure the right side door.
Note that there are latches at both ends of
the door.
3. With a white or red marking pencil, place a
mark on one of the blower paddles or on the
side of the flywheel. See Figure F.7 for loca-
tion.
4. Connect the strobe-tach according to the
manufacturer's instructions.
TROUBLESHOOTING & REPAIR
FIGURE F.7 - STROBE MARK LOCATION
CLASSIC II
STROBE
MARK
5. Start the engine and direct the strobe-tach
light on the blower paddle. Synchronize it to
the rotating mark.
With the machine at HIGH IDLE the tach
should read between 1780 and 1810 RPM.
With the machine at LOW IDLE the tach
should read between 1350 and 1400 RPM.
F-23