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I just got a Clinton A400 from Craigslist-cheap. It has a sticking recoil that prevents me from testing it for spark, etc. How do I free up the recoil?
Also, the engine has a Champion R8 plug in it. Is this the correct plug?
Thanks for any info.

Just take the side cover off & turn over by hand.
Hey it;s 60 years old, take it apart & clean it, new rope etc.....

Thanks Rob-actually, the recoil pulls out fine-it just hesitates to retract. It will if you help it a bit. I'm just afraid to take it apart-even though that's all it will need, probably. I just don't want the thing to fly apart like so many others.......But I agree-if it doesn't fly apart, I think it just needs cleaned.

Like Rob says, no rocket science, just messy.
I recommend gloves and glasses.
Very likely you will have to pull the spring out and clean/lube it.
The tricky part is putting it back together - getting the 'reel' engaged with the spring.

I saw somewhere that electronic ignition modules are available...Are these an option?

Yes the module is an option. I use them on my Clintons. Any small engine repair shop should be able to get them for you.
I use Stens part number 440-465. Buy a spare because the are known to fail with out warning.

Thanks Roger. I am a total newbie to A400s and it looks like I'm gonna have to tear this one down (somewhat) and install a new ignition. I found a gas tank-I'm still looking for an exhaust manifold. And the carb hasn't been checked yet........Well, I needed a new project.....

Tim,

Before you go ripping into your recoil, remove it from the motor and spray same penetrating oil around the bushing in the center. Usually when they won't retract short of a broken spring a dry or dirty bushing is the culprit.

R.E.A.R.

Thanks-that's what I thought. I put some PB Blaster in there....but I might put some more in. It seems to retract when you "help" it a bit......
I have another question-since we were discussing ignition modules, is there a decent replacement for the original coil? Now, I want everyone to know-I haven't even taken anything apart yet. Just looking ahead. Thanks for all advice. This thing is gonna run again.......

The coils are pretty reliable.
There are a few styles, so if you really need one, post a photo.
New points are a must if you don't use a module.
There are a few different styles of points as well.
As Brian said, the module can fail and they only work with the right polarity.
If you aren't getting spark with a module, try reversing the connections.
I have pretty much all you might need.
Shoot me a message if you can't find something.
Welcome to the Clinton club!

terry