Specifications; Coil; Spark Plugs; Firing Order - Mercury 305 CID Service Manual

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Specifications

Coil Part Number

Primary Resistance

Secondary Resistance

Spark Plug Type

Spark Plug Type

4B-2 - THUNDERBOLT IV AND V IGNITION SYSTEM

Specification

.60-.80 Ohms

9,400-11,700 Ohms

All MIE and MCM

Except Gen+ Engines

.040 In. (1 mm)

Champion RV15YC4

All MIE and MCM

Gen+ Engines

.045 In. (1.1 mm)

Champion RS12YC

Firing Order 1-8-4-3-6-5-7-2

90-823225--1 1096

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