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ABOUT CAUTIONS
Cautions give instructions to prevent damage to equipment. Cautions will be
given in the following list and just before the subject where the caution is applicable.
CAUTIONS
1: CHECK THE ENGINE OIL LEVEL AND ADD OIL IF NECESSARY BEFORE
PERFORMING ANY TEST. AN ENGINE SHOULD NOT BE TESTED IF THE OIL LEVEL
IS TOO LOW.
THE TEST RESULTS WILL BE INFLUENCED AND THE ENGINE CAN BE DAMAGED
IF A TEST IS PERFORMED WITH A LOW OIL LEVEL.
2: CHECK THE COOLANT LEVEL AND ADD COOLANT IF NECESSARY BEFORE
PERFORMING ANY TESTS. AN ENGINE SHOULD NOT BE TESTED IF THE
COOLANT LEVEL IS TOO LOW.
IF THE ENGINE IS HOT, CHECK THE LEVEL AT THE OVERFLOW TANK. THE TEST
RESULTS WILL BE INFLUENCED AND THE ENGINE CAN BE DAMAGED IF A TEST
IS PERFORMED WITH A LOW COOLANT LEVEL.
3: FOLLOW THE CAR MANUFACTURER’S INSTRUCTIONS WHEN WORKING ON
VEHICLES WITH A CATALYTIC CONVERTER.
THE CONVERTER CAN BE DAMAGED BY BACKFIRES OR BY TOO MUCH
UNBURNED FUEL GETTING INTO THE EXHAUST SYSTEM.
4: KEEP THE TEST LEADS AWAY FROM HOT SURFACES OR MOVING ENGINE PARTS.
THE TEST LEADS CAN NOT WITHSTAND HIGH TEMPERATURES OR SEVERE
MECHANICAL STRESS.
5: ALWAYS TEST IGNITION SYSTEMS USING TEST SPARK PLUGS.
6: TEST INJECTORS ONLY WHEN THE ENGINE IS COLD, OTHERWISE THE
CATALYTIC CONVERTER CAN BE DAMAGED.
*******
INTRODUCTION
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