It is something I scanned and put it in a PDF myself.
But if you email me I could email it to you.
As the other poster said I received it when I bought my heathkit scope back in 1965.
I also have the manual for putting it togeather if you would like that.
My email address is at the bottom of my post.

 

No, I actually have the assembly manual, and the shell reprint, and the heathkit IO-20. $40; I thought that was a fair price. Thanks! I replaced the two main DC power supply filter caps on general principles, the high voltage cap seems OK, luckily, because it's kind of an oddie. It works great, from the early 1960s.

Did you buy it as a kit? It was about $90 for the kit in 1963 or somesuch, which was a fair amount of coin back then considering a decent used car could be bought for that much. Fully assembled $169? The commercial units were $500 - $1000

Really useful at tracking down ignition problems. For example I did find that, while Ford kept the same part # for the distributor rotor for many years, the part changed - they got noticeably shorter in the smog era.

A wider rotor-terminal gap inside the distributor cap has the same effect on coil firing voltage as opening up the spark plug gap. It's not necessarily a bad thing all by itself, but every single component in the ignition system was engineered to work with everything else together, start mixing and matching stuff all around and things can get weird. In my case using a FlameThrower high output coil and full battery coil pushed the old P&C system over the edge and caused cross fire and arcing. An older full length black Autolite rotor and quality silicone plug wires settled everything down.

 

Yes I bough it as a kit. I also bough the Knight KG-375 Auto Analyzer as a kit at the same time.
They were both took in a robbery at the Gulf station that was working at in 1965 and I had to order and build them both again.
I used it the other day on my 1994 F53 Motorhome to see if it still works and it did.

The 1994 F53 Motorhome:



/

 

What a neat find!

 

Yeah, thanks for the pics! I didn't have much idea what I was looking at when I first fired it up, still don't, but it did show excessive firing line voltages, and that the distributor itself was lunched. I think bearings and bushings tend to wear in an egg shaped pattern, and the uneven idle seemed to lope along with pattern. If the primary waveforms for each cylinder is superimposed the dwell time for each cylinder should overlap closely, total variance shouldn't exceed 2 or 3 degrees. A little slop or clearance in an electronic ignition is tolerated a lot better, in a mechanical points ignition it causes ignition timing to be all over the place. Might get engine knock on one or two cylinders prematurely for example. So the tuner tries to compensate by retarding the total timing, leading to poor performance and economy, or running hot.

Lots of cool things they can do, if a carburetor isn't adjusted or balanced right, one bank of cylinders might have high firing voltages as lean fuel mixtures require higher coil voltages, and this will show up on the screen. Heathkit was quite the company, they made just about everything. Decent quality, and the design engineering was quite good. I have some Dynaco stereo equipment from around the same time, and it sounds fantastic, these were supplied as kits as well. Now that electronics have eleventy gazillion ICs on something the size of a molecule, it kinda takes the fun out of it. No smartphone kits for the DIYers. Hell, I had to quit coffee for two days just to change the damn battery.

You kids! Lawn. Remove thy self!!!

 

I was able to get PDF versions of the user manual and actually a whole slew of other manuals from a seller on Ebay.
I was apprehensive because the details of the included manuals were to say the least. Vague.
But for ten bucks I took a chance.
Worth it!!
I got the main manual I was looking for.
The main user manual that shows how to set up and use the device. Plus a trouble shooting manual for the device its self with part numbers.
Still going through the folders on the disk.