1997 Johnsoon Evinrude "EU" 50 thru 70 3-Cylinder Service Manual, P/N 507266, Page 109Get this manual
Troubleshooting Test Equipment
The following equipment is available from various manufacturers to support your ignition and electrical system troubleshootingManufacturer ordering addresses are on the rear inside cover of this manual Stevens NoS21, 13C, or S48 Merc-O- Tronic No55-4S or 55-6S
rn Spark testers:
Peak-reading voltmeters: Merc-O- Tronic No781 Stevens NoCO-77 Electro-Specialties LoPRV-1 Merc-O- Tronic No700 VOA Stevens NoAT-101
rn Ohmmeter capable of reading low and high ranges:
INote Component temperature can
affect resistance values at rate of 10 ohms per FAll resistance values listed in this manual are correct at 70 (21 e)Ignition module load adapter: Stevens NoPL-88