Lincoln Electric RANGER 225 GXT Service Manual page 70

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ENGINE THROTTLE ADJUSTMENT TEST (continued)
FIGURE F.6 – BLOWER PADDLE MARKED FOR STROBE-TACH METHOD
B l o w e r P a d d l e
Blower Paddle
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 bail.
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 acci-
dental engine kickback or starting.
7. With the black or red marking pencil, place a
mark on one of the blower paddles. See Figure
F.6 for location.
TROUBLESHOOTING AND REPAIR
RANGER® 225 GXT
8. Connect the strobe-tach according the manu-
facturer'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 rotat-
ing mark.
10. With the machine at HIGH IDLE the tach
should read between 3650 and 3750 RPM.
With the machine at LOW IDLE the tach
should read between 2300 and 2500 RPM.
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