1973 18 HP Evinrude 2 sets of points or 1

[F_R]

Re: 1973 18 HP Evinrude 2 sets of points or 1

How do I test the driver coil. I have an Ohm meter. Thanks

1976 resistance specs are 1.45 +/-0.4 ohms on rope start models. Sorry. I don't have the 1974 spec which may or not be the same.

 

[tjhamms]

Re: 1973 18 HP Evinrude 2 sets of points or 1

w2much, How did you make out?

 

[oldboat1]

Re: 1973 18 HP Evinrude 2 sets of points or 1

Try running it in the dark or a dark area, and check for leakage in the plug wires. If you got a jolt, that might be a reason. An easy fix is to replace the plug wires (7mm solid core. I can buy it by the foot at the local NAPA store. It's cheap.). Also, clean any rust or corrosion from the spring inside the plug boot -- could be the source of the bad connection. You don't have to disassemble -- just ream it out a little with a Phillips screwdriver and see if that makes a difference.

 

[oldman570]

Re: 1973 18 HP Evinrude 2 sets of points or 1

A lot of questions/answers about older small OMC outboards, can be found by reading the info found at the following,

OMC outboard related articles

He has done a lot of work on the older OMC motors, and The info of how to set the points and carb using a ohm meter is the best way of getting them set so the timing is dead on for both cylinders. It can make a world of difference when one wants a smooth running motor. JMO
Oldman570