I have a bench grinder from circa 1960's I believe the model # is A1243484 it is old and some of the #'s might be missing. During a recent state inspection I'M required to have the grinder guarded properly. Question were there original guards on this type of grinder back in the 60's?

There is a similar one on eBay, but no free ones. Cummins are known for diesel engines rather than grinders, which means someone else made it and put a Cummins badge on it. Take your pick from any of these.

https://www.google.com/search?q=8%22+Bench+Grinder+manual

They don't need much of a manual anyway, most of the content is on safety. Press switch to turn on and off, one arbor is right hand thread, the other is left hand thread.

https://www.google.com/search?q=Cummins+model+c-140+bench+grinder+manual

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Usually, 4 wires are multi-directional neutral and earth are usually colours the other 2 are both live and would need to go through a switch. you can of course put the other live in a cover and just use one live wired as usual into a plug. Make sure the spare wire is well protected ie in a jb with plenty of tape around it

Feel the power cord when that happens. If the power cord doesn't get pretty warm, and the grinder itself doesn't get awfully hot, then I'd suspect the breaker - they get old and trip too easily.

this is a "Split-Phase"motor it uses only a run capacitor and a typical capacitance rated MFD rating will be between 80 and 290 MFD, go to www. grainger..com and they will have your part,and even if its an older unit and the model/serial/number is available take it with you & they will have a replacement capacitor available in the correct size/dimension/mfd/etc

replace the start/run capacitor or repair the centrifugal stating device in the end of the unit

go to your local marina and buy a simple on off switch or take the wires off the switch on your grinder and hook them up to a extension cord and put an inline light switch on the cord.

I had the same problem with a Northern Tools bench grinder. These are made in China and parts are hard to come by. I had enough room after removing the old broken on/off switch to install a single pole 15 amp light switch like you use in your home. I simply installed it horizontally and then put the switch cover on. It works perfectly. If you do not have enough room then look for any 15 amp or larger switch that will fit in the housing. Any on/off switch will work. You could even mount the switch on the bench in a switch housing and run the wires from the grinder to the switch and back if need be. Just be safe and make sure there are no exposed wires. As a last resort you could remove the switch connect the wires, eliminating the switch and use a plug in wall switch such as this.

I would recommend calling 1-800-274-6848 for the replacement parts cost and the location of a dealer nearest to you. they might have these available as kit but their breakdown shows individual parts.

you can try this its a little pricy but grainger offers a lightened one heres the p/n 6X854