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UnicycleParrot last won the day on July 10
UnicycleParrot had the most liked content!
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Thanks for the advice! Is there any specific reason on why you would suggest a repair of the spark plug wire, and not just a complete replacement? Also, is there a specific gauge of wire that is best for a spark plug wire?
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I figured that I would cut around here, leaving a section to solder a new wire to. On the other end, I want to save the little C shaped piece to solder onto the new wire, so I plan to cut it off and solder it to the new wire. Also, what are the NOS engines that I have heard about and seen pictures on this forum. Are they bigger in some way? Or are they newer?
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It runs! I mixed up roughly 32:1 of fuel and 2 stroke oil and attempted to start it. At first the fuel mixture screw was way too rich (lots of fuel out of muffler), but I got it dialed in and I got a handful of 1/2 to roughly 1 second runs. Once it finally sounded like it was about to run, the spark plug wire fell off. I have a few other questions about the engine though. While I was taking apart the carburetor to check the diaphragm a little while ago, I noticed a small pinhole in the top of the carburetor. I assume this is not supposed to be there. I have repaired a hole in a carburetor on a 4-stroke engine with a 2-part aircraft epoxy. Would that work in this situation too? And about the spark plug wire (and the other wires connected to the magneto) is there anything I need to be careful about or worry about when soldering new wires in their place? Is there any type of a runaway scenario possible on an engine like this one? (imagining we had no way to kill the spark) Could the engine keep going full throttle and blow itself up?
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Interesting. Mine doesn't even have the oil hole for the pull starter. Just edited the first post for better pictures
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Thank you for such a timely and and helpful response! I do have the kill-switch piece of metal that is supposed to screw onto the top of the blower housing. I took it off when I first got the engine, because I figured it was some random thing that was on there from the previous owner. I have absolutely no experience with engines of this vintage (2 or 4 stroke) I know a few things about its life. The previous owner I never saw in person, but I hear he never used this engine. I also heard that long ago he was planning to make a minibike out of this engine. (kind of like the one you made @Wallfish) The engine has also been indoors for many years of its life (obviously) When I said "a single point" I figured it would maybe be called that because there is only one cylinder (thus only 1 set of points) I looked at the points when I first got the engine, and they are very clean. (like the rest of the engine) I also checked if it has spark, which it does. It is interesting to hear that it is an earlier model. I am a little curious if it is in better condition than others of the same vintage. Yes, deffinitely!
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UnicycleParrot started following O&R Questions
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Hello everyone. I have experience in small engine repair (mainly 4 stroke) on engines no older than 15 years old. I know how 2 stroke engines work too. I have recently obtained an old O&R engine, which seems to be in great shape. I do not know what the engine originally came off of, it also has no markings on it with a model number (or any number for that matter). One question I have is about the carburetor. Every carburetor picture I have seen on this forum has a red primer button, and a slotted jet on the top. Mine, however, has no primer button or a slotted adjustable jet on the top. Instead, there is a non-slotted knurled screw. I am also confused, because my unit does not seem to have any off switch, to stop the spark. Additionally, I am curious as to what the single point is for on an engine like this is for. On all the modern engines that I have worked on, there are no points. I have attached some pictures too for you to look at. By the way, I have not attempted to start it yet, as I am somewhat unsure of what fuel ratio it needs.