Lincoln Electric RANGER 9 SVM 110-A Service Manual page 89

F-34
ENGINE THROTTLE ADJUSTMENT TEST (continued)
FIGURE F.7 – BLOWER PADDLE MARKED FOR STROBE-TACH METHOD
TEST PROCEDURE
This test can be conducted by any one of four
methods.
Strobe-tach Method:
1. With the 5/16" nut driver, remove the 6
sheet metal screws from the case top.
2. Remove the rubber gasket (cover seal) from
the lift bale.
3. Remove the fuel cap. The rubber gasket for
the fill tube will come off with the case top.
4. Remove the case top, then replace the
fuel cap.
5. Conduct this procedure with the gasoline
engine OFF.
6. Remove the spark plug wires to prevent
accidental engine kickback or starting.
7. With the black or red marking pencil, place
a mark on one of the blower paddles. See
Figure F.7 for location.
RANGER 9
TROUBLESHOOTING & REPAIR
Blower Paddle
8. Connect the strobe-tach according the
manufacturer's instructions.
9. Reconnect the spark plug wires and start
the engine. Direct the strobe-tach light on
the blower paddle and synchronize it to
the rotating mark.
10. With the machine at HIGH IDLE the tach
should read between 3700 and 3750 RPM.
With the machine at LOW IDLE the tach
should read between 2150 and 2250 RPM.
F-34
RANGER 9