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#1
04-10-2018, 11:16 AM
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1650 Keeps Frying Coils
I picked up a 1650 last fall and have slowly been bringing it back. Had to have spark plug threads repaired. Replaced the head gasket, new points and condensor, retimed and got it firing up really well.
However, I have fried 2 coils on it. Both after less than an hour of run time. I tested them using this as reference http://www.onlycubcadets.net/forum/showthread.php?t=11 Each time I get no continuity between + and -. At first I assumed it was just a bad or old coil, as it was the one on the tractor. Perhaps it didn't have a resistor. I ordered a new one with a resistor, listing specifically stated it had a resistor and was for Kohler K motors. Put it on and it fired right up and ran great. Was running the motor to get the carb set and check everything out, and after about 20 mins, it just shut off. Tested coil, and wham, no continuity between + and -. I put another coil on and it fired right back up. I am hesitant to run it very long because I'm afraid I'll burn it up too. What could cause this? Just bad luck with coils? I have found that the + wire to the coil and the wire to the middle terminal of the rectifier both have quick splices on them, so the PO has tinkered with the wiring. I plan on splicing and soldering those, but I can't imagine that is causing an issue. The brake safety is also jumped with a wire. I'll double check and make sure it's a good and clean too. The points wire was also bypassed with a 12 ga wire just hanging around the motor when I got it, I replaced it with a 14ga wire (looks like what is on my 1200) and new ends, rerouted it back the same way it is on my 1200. I can't imagine that's too small of a wire for that. But perhaps. Anything else specifically I should check for or test? I really don't want to ruin another coil.
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-Jason Cub Cadets: 1200 | 149 | 1650 | 122 | Z-Force S 54 Implements: QA42A | Push Blades | #2 Tiller | Rear Blade | 223A Utility Trailer | And a few mower decks Gravelys 5260 | CI Walk-behind (Project) And a couple of Subarus 
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.
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