Mercury 5 SERIES Service Manual page 51

IGNITION SYSTEM
B. RESISTANCE TEST
1. Use an ohmmeter to perform the following primary winding test.
0.02-0.38Ω
2. Use an ohmmeter to perform the following secondary winding test.
NOTE: High tension cables must have spark plug cap removed before testing. Cap contains
5k ohm resistor.
IMPORTANT: To remove spark plug cap from high tension leads, turn cap counter-
clockwise while applying slight outward pressure. DO NOT PULL HARD or lead may
be damaged. To install cap, turn cap clockwise threading cap onto high tension lead.
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90-857138R1 MAY 2000