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Old 06-11-2025, 11:56 AM
joedirt16 joedirt16 is offline
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Join Date: May 2025
Location: Pennsylvania
Posts: 13
Default RZT 50 Battery Charging/Starting complications

Hello, all! I've been searching through the threads to find what I need, but nothing definitive. So...

I have a 2005 50" residential zero turn (17BA5A7P709) and I have a charging issue. (I think) I know in one thread, someone mentioned measuring the volts of the battery wide open. I also read to measure the volts going to and from the voltage regulator.

I understand starting at the battery and working down the electrical system to find the "weak link," the thing is, if the battery isn't charging, wouldn't that be a false starting point? I assume, to get accurate results, I should fully charge the battery first?

I assume my path of testing would go as follows:

1. Test Battery voltage
2. Test voltage going to Solenoid
3. Test voltage coming from Solenoid
4. Does #3 go from Solenoid to the Voltage Regulator?
5. (If not) Test Voltage to Voltage Regulator
6. Test voltage from V.R.
7. Should Test voltage at the starter be in there somewhere?

Long story, well, long, it doesn't start. I jump the battery and it starts right up. It's like it isn't charging so it has absolutely no cold cranking ability at all. I got the battery last year. It only had "good" starts half the summer. Bad thing is, I've replaced the Solenoid, VR, Alternator, wiring harness, and starter, all within the last year, so everything should be good, unless I just got a crap part.

Side note: I saw someone said they replaced their key switch and it fixed this problem. My daughter made fun of the face I was making when I read that because it makes no sense. But, I could be wrong, I guess.

I've tried to be as detailed as possible, but I'm sure I missed something.
Thanks in advance!
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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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