1998 Johnson Evinrude "EC" 25, 35 HP 3-Cylinder Outboards Service Manual, Page 105Get this manual
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Troubleshooting Test Equipment
Note The following equipment is available from various manu facturers to support your ignition and electrical system troubleshootingManufacturer ordering addresses are on the rear inside cover of this manual
Spark testers: Stevens NoS21, S13C, or S48 Merc-O- Tronic No55-4S or 55-6S Peak-reading voltmeters: Merc-O- Tronic No781 Stevens NoCO-77 Electro-Specialties NoPRV-1 Ohmmeter capable of reading low and high ranges: Merc-O- Tronic No700 VOA Stevens NoAT-101