MAC TOOLS EM721 Manual Del Usuario página 28

THE IGNITION SYSTEM POSES A POTENTIAL SHOCK HAZARD. ENSURE THAT THE ENGINE IS OFF
Meter setup to measure RPM:
•
Set the rotary switch to the RPM IG (RPM IG) setting.
•
If "RPM IG" is not present on the display, press the "%DUTY" button until "RPM IG" appears on the display.
•
Press the "RANGE" button to select the number of cylinders.
•
Insert the black lead in the "COM" jack.
•
Insert the red lead in the "
Connect:
•
Black test probe to a good ground near the coil.
•
Red test probe to the primary side of the ignition coil.
Start the engine and note the reading on the display while moving the throttle.
If the reading is too high or unstable, adjust the trigger level.
NOTE: Refer to the car's service manual for information on the number of strokes and cylinders for specific
engines.
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BEFORE CONNECTING AND REMOVING THE TEST PROBES.
Spark Plug
" jack.
WARNING
RPM IG
Red
Black
Conventional
Ignition Coil
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