Another benefit of using a timing tool on the ten horse OMC classics, is that the timing tool compresses and holds the expansion spring and cam in place. Just slide the tool on the crankshaft and flywheel key, and hold it in place with the flywheel nut.
The Ohm meter needs to have a setting for 1 Ohm in order to pick up the subtle difference in resistance when the points just open. I have a multimeter that Frank R recommended some time ago, and was very reasonably priced. After using it for a while, I found that it also has an audio setting. The great thing about the audio, is that you can fully focus on the point adjustment, and just listen for a change in tone when the points open.
Improvise-Adapt-Overcome
