Hello, I just fixed up a 1972 evinrude lark 50 hp model number 50273C and was wondering what tach to get for it. I heard you could only use omc tacks also how do you know how many pols to set? Thanks in advance.
update, Boobie. I called CDI electronics and they said it was a 6 pole, 12 pulse system. the flywheel does have 6 magnets on the electric start and I believe 5 on the manual start. Stator has 8 whatever there called then two charge coils but the man said you have to count those as two each making it a 12 pulse. here is a good link to find out what pulse or pole you system is for future use. http://www.beede.com/TS-OTA.htm I believe the tach setting next to the pulse numbers are for that particular brand tach. 12 pulse equals 6 pole equals setting of 6 on most outboard tachs.
