02 Merc 60HP 3cyl stopped firing

Lord Tywin

Petty Officer 3rd Class
Joined
May 16, 2017
Messages
80
Helping a neighbor diagnose his problem. It ran great, then suddenly stopped sending spark to all 3 cylinders. We dont have a manual or a wiring diagram and are looking for some input on what may have caused this. Main fuse is good and everything works except no spark. Any troubleshooting tips or charts/diagrams would be appreciated.
 
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