1985 OMC 65, 100 and 155 HP Models Commercial Service Manual, PN 507450-D, Page 133Get this manual
Safety Warnings
Perform all ignition coil tests on wooden or insulated bench top to prevent leakage or shock hazardsTo avoid possible shock hazards do not handle ignition coil or tester leads during output testDo not touch high voltage ignition coils or spark plug wires when engine is being started or when runningShock can cause serious personal injury under certain conditionsTo prevent possible fire and explosion under the motor cover, make sure electrical wires are routed and clamped in original position; away from rotating parts which could cut or abrade wire insulation