Anybody know 'Merc-o-tronic' ignition testers?

[67Dart273]

Some of you know I been foolin' with old outboards. I could not restrain myself. Bought this nice shape/ nonworking Merc-o-Tronic model 98 ignition tester. It has a vibrator similar to used in old car radios, you can not get a diagram for the thing so I have some work to do. It ALSO came with a couple of CD ignition testers and another unrelated adapter. These are primarily focused on testing magneto igniton coils and condensers. I would think it would also test auto coils. I have to get to work to figure it out. Came with the user manual.

It is in very nice shape, not beat up and no rust or corrosion. Meter seems OK "We'll see"

 

[Krooser]

FB has a few vintage outboard pages that could help...

 

[kursplat]

are you on the H.A.M.B. ? someone there will probably have dealt with them

 

[67Dart273]

Got into it some today. It is difficult to get apart and due to construction, will be difficult to wire trace. There is no diagram available that I can find. The manufacturer never released this info

Most of it works. One scale on the condenser test section does not seem to work. It requires an oddball 7.5V battery (I used a bench variable DC power supply) as well as 110VAC for one test

 

[toolmanmike]

@halifaxhops

 

[halifaxhops]

Never saw that one before. Batteries + bulbs can get the battery for you.

 

[halifaxhops]

Try here for info, might have to play with the searches
Internet Archive Search: creator:"SUN Electric Corporation"

 

[67Dart273]

Try here for info, might have to play with the searches
Internet Archive Search: creator:"SUN Electric Corporation"

I did not get anywhere with that?
On a patent search, ...................
I did find "I guess" is the earlier model. Mine uses a "special vibrator" (Like old radio vibrator) but the earlier model actually had a set of motor driven breaker points to excite the coil tests. One of the cap check scales does not work on mine, the leakage and capacity seems to work, but there is one other that does not set up as described.....just pegs the meter. MOST of this seems to be functional

I don't need a battery.................although I discovered where to buy one........I'll just use a bench top variable DC supply. The other silly thing is that 110AC is only used for one test, hell I could build an inverter circuit to generate that and do away with two power sources