Question about John Deere Garden
Dealer. or try eBay.
Posted on May 03, 2015
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Posted on Jan 02, 2017
ok, since you have the points, I assume you have the B43g Onan
engine. Was it running before the new parts were installed?
Check your point gap and make sure it is .016, plugs ahould be gapped at .025 Make sure your plug wires are good too. Should be somewhere between 0 and 10,000 ohms per foot, when measured with an ohmmeter. Once everything is rechecked for gap distance, make sure there is no spark by pulling plug out, leaving wire on and ground the outside of plug to the chassis of the tractor.
Crank over and look for the spark. Coils are about $100, so you want to eliminate everything else first.
Diagnosing a points ignition for no spark is really simple. Do you have 12V at the coil? Do you get a spark when you connect and disconnect the negative terminal of the coil to ground? If not you have a bad coil.
Posted on May 19, 2009
Check the coil impedance on the primary and secondary side. You'll have to disconnect the battery negative cable so you don't short something out. Unplug the spark plug wires and the two sets of smaller wires connected to the primary side of the coil. The primary coil reading should be between 3.7 ohms and 4.6 ohms while the secondary (spark plug side) should be between 34.2 k-ohms and 41.6 k-ohms. If the resistance values you measure are outside of these ranges, you need to replace the coil.
Posted on May 19, 2009
You have a defective ignation coil. When the engine gets hot, the winding in the coil opens and the engine stops. After it cools down, it will again make contact and start again. If you don't know where the coil is, follow the wire from the spark plug. The spark plug wire is attached to the coil from the factory. It's easy to replace with a 1/4 inch socket set. Set the magnet to coil gap with a standard business card.
Posted on Jul 27, 2009
I don't have a diagram but it shouldn't be to hard. You will have to drop the deck. Then when installing the new belt remember to always place the inside of the belt (V) into the pulleys and the outside of the belt (flat side) up against the larger idler pulley. When you have the belt on properly it should be snug. If you have excessive play you need to try a different routing around the idler.
Good luck and let me know if this helps.
Posted on Sep 06, 2009
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