factory

Welcome Mike, there are several different O&R pumps that all seem to use the pump & impeller, I have three different ones here & only one where the impeller is intact, I should really get some measurements from it. This is the impeller remains from my Petro Chug-A-Pump with some measurements (pictures taken years ago). David

The same thing happened here, I made a test stand and it's had an engine displayed on it for many years now. David

The French have a lot to do with why almost all spark-plugs are Metric. https://web.archive.org/web/20120320135004/http://www.asecc.com/data/plughistory.html David

Metric bearings on an American tool, that seems a bit odd to me. David

I've seen three pan head screws* fitted to several Model J engines and my Model F engine, they are shorter so they don't stick out above the four mounting points, for when the gearbox is attached to a metal plate. *Part no #26-47, three fitted according to the parts list. David

Well it can't be earlier than August 1960 as the gearbox models weren't available then (plus no mention of Ultra before Compact anywhere), I suspect the original purchaser/owner re-packed it with that newspaper. All the paperwork should have dates in the bottom left corner too, like this from the August 1961 engine price list. David

They seem to turn up fairly often, I have saved pictures of at least 50 of them, there are two here as well neither are in great condition. David

The converted mower is looking very nice now it's finished, did the blade fit the O&R or did it require modification? David

Anyone buy this really nice early Model J with the original box? https://www.ebay.com/itm/203038832058 I rarely look at US listings these days as they sell before I get a chance can see them, but do occasionally check the completed and find all the interesting stuff. David

Welcome Phil, there is lots of information on these engines, a carb repair guide and lots of other tools that are powered by O&R engines here; https://myoldmachine.com/forum/74-ohlsson-and-rice/ I recommend either starting a new thread in the O&R section or asking on a similar thread, if you need any help or assistance with your restoration. David

Will carb cleaner cause any damage to the plastic, I would hate to find out why these tanks end up damaged the hard way. David

I usually try cleaning the tank filter using the largest sized glass syringe I have, after first trying the other methods of cleaning, i.e. your cleaner of choice & using nuts etc. to loosen the crud. I'm guessing they don't have "stoves" in Arizona. David

No idea without trying to look inside with my cheap borescope camera, will see if I get a chance at the weekend. David

I'm surprised it's the tank is like that, it almost looks unused, I guess it got used once, they left the gas in & it never started again and then got abandoned in it's box. The 410 in the model number seems familiar, I'm sure @pmackellow's Dyna-mite version is also a model 410, but mine is a model 300 (only difference seems to be an extended tank filler). David

Very strange that they didn't put AEP on it anywhere, it should date to somewhere around 1977/78 from the original advertising. Thanks for measuring those parts. David

Did anyone on here win it? I wonder if it'll be another six years before we see another one. David

Same here, mostly back together but I haven't got round to adding the progress to the thread. Rain has stopped me cleaning some parts outside so I've been working on vintage HP counter that's also been in bits for too long. I forgot to ask before, but what are the approx dimensions of the two trimmer guards? and are there any markings on the trimmer head to indicate if it was either made by AEP* or bought in? Some pictures of the trimmer head may also help @Brian Lynch with locating the lost parts for his Groomer trimmer. David The title of both threads should really have AEP in it.

It might go faster but I'm not sure any of us could actually fit in one, unlike the mini-bikes or open toby cart. Shame they cost as much a normal car too. David

Looks very nice, but I can't help thinking if it was used as a mower the bare aluminium would corrode very quickly. David

You did well to get that for the price, the seller could easily have got more if they had let the auction run. Do the instructions mention anything about the make/type of pump that fits on the back of the generator? David

Unfortunately I can't tell you if it's original or not, my manual was missing the relevant pages (engines type 13B426 & 13B427), did the engine look to have been apart before (it would have been noticeable with it being painted all over)? Will have a look to see if I have any other later engine diagrams that may show it. David

Another one of these appeared yesterday on ePay in France, definitely not a work of art in this condition (needs a lot more than some body filler) but does show most of the parts used in the pictures. It had 9 days left when I saw it earlier today, but just noticed it has ended early before posting. https://www.ebay.fr/itm/143639800300 David

There isn't one, it was on something much older and looks more like a gasket to fill space behind the bearing. David

There are certainly plenty of them where you are, so it shouldn't be too hard to find one or two at a reasonable price to add to your collection if you wanted to, just be aware that the cylinders are spot welded to the crankcase for most of them, the .049 cylinder is threaded same as the later Compact range. David

For the last couple of carb rebuilds I've used a piece of gasket paper for sliding the spring over the roller, the gasket paper has also been used to set the coil gap at 10 thou. David