Actron - CP7821

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Contents

aclrnn CP7821 COMPRESSION TESTER INSTRUCTIONS Before making this test it is a good practice to check and be sure that aii cyiinder head boits are tightened to the engine manufacturer s torque specifications 1 Run the engine for about 15 minutes until it reaches normal operating temperature 2 With the engine off loosen all spark plugs about one turn then use an air hose to blow all the dirt out of the spark plug wells Then remove all of the sparkplugs and gaskets Place them on a clean flat surface In the order in which they were removed This will help to cor relate any compression prob lem with the condition of the plug from the particular cylin der Involved 3 Remove the air filter and block open the carburetor throttle pla ...