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TROUBLESHOOTING & REPAIR
F-26 F-26
COMMANDER 500
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MARK BLOWER
PADDLE HERE
FIGURE F.7 – STROBE MARK LOCATION
ENGINE THROTTLE ADJUSTMENT TEST (CONTINUED)
TEST PROCEDURE
Strobe-tach Method
1. Conduct this procedure with the engine
OFF.
2. Unlatch, lift and secure the right side engine
service access door. Perform the Case
Cover Removal and Replacement
Procedure through Step 9. (For Strobe-
Tach method only.)
3. With a white or red marking pencil, place a
mark on one of the blower paddles. See
Figure F.7 for location.
4. Connect the strobe-tach according to the
manufacturer's instructions.
5. Start the engine and direct the strobe-tach
light on the bolt head. Synchronize it to the
rotating mark.
With the machine at HIGH IDLE the tach
should read between 1890 and 1910 RPM.
With the machine at LOW IDLE the tach
should read between 1450 and 1500 RPM.