I've worked on quite a few engines now, all kinds and types. Not that I'm any good at it but I have seen a few. I came across a new one for me. I have never worked on and was not familiar with an engine with a pick up coil, attached to an ignition coil that is mounted on the outside of the engine housing, not near the flywheel. Took me a minute to figure out what I was dealing with.
I just bought a Ryobi RYI2000 Inverter / Generator. The engine has no markings, I'm assuming it's about a 2hp 4 stroke, it 106cc, looks Chinese made. It was not running when I purchased it. It will produce spark but it appears that it may be out of time. It has an OHC.
I tried to remove the flywheel to check the key, but I can't even figure out how to get that off. It appears the "flywheel" is just a metal housing over the charging coil. It seems to be threaded onto the shaft and then it looks like a flywheel key was inserted after it was threaded on. If that is the case I have no idea what I'm going to do because the flywheel key is not coming out and you cannot unscrew it with the key in place. That's one issue.
My main question is about this pick-up coil that I'm not familiar with. With a traditional ignition coil the flywheel magnet should pass the ignition coil at TDC on the compression stroke (I think I'm saying that right). There is a magnet on the side of this "flywheel" and I'm wondering if that magnet should be passing the pick-up coil at TDC as well? On this engine the magnet is about 45 degrees before the pick-up coil when it is at TDC. Is this an indication that it is out of time or does that pick-up coil somehow store that charge and send it to the ignition coil at the appropriate time?
With the OHC, can't I adjust the timing by moving the timing chain?
I just bought a Ryobi RYI2000 Inverter / Generator. The engine has no markings, I'm assuming it's about a 2hp 4 stroke, it 106cc, looks Chinese made. It was not running when I purchased it. It will produce spark but it appears that it may be out of time. It has an OHC.
I tried to remove the flywheel to check the key, but I can't even figure out how to get that off. It appears the "flywheel" is just a metal housing over the charging coil. It seems to be threaded onto the shaft and then it looks like a flywheel key was inserted after it was threaded on. If that is the case I have no idea what I'm going to do because the flywheel key is not coming out and you cannot unscrew it with the key in place. That's one issue.
My main question is about this pick-up coil that I'm not familiar with. With a traditional ignition coil the flywheel magnet should pass the ignition coil at TDC on the compression stroke (I think I'm saying that right). There is a magnet on the side of this "flywheel" and I'm wondering if that magnet should be passing the pick-up coil at TDC as well? On this engine the magnet is about 45 degrees before the pick-up coil when it is at TDC. Is this an indication that it is out of time or does that pick-up coil somehow store that charge and send it to the ignition coil at the appropriate time?
With the OHC, can't I adjust the timing by moving the timing chain?