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  #1  
Old 08-24-2015, 03:40 PM
Phil21502 Phil21502 is offline
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Default Cub 127 dead battery
Have used this cub 127 in the last week 4 times and it started up fine. Today went to start and nothing. Battery was dead. Jump started it and it fired right up. Just mowed for 2 hours and it was fine. The voltage guage had the needle on the O spot the whole time. Is this right? After mowing i shut it off and it wouldn't start again. Voltmeter had the battery at 9 volts. The battery is new and is on the charger right now. Any ideas? Voltage regulator? Idk, it started fine yesterday. Thanks.
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  #2  
Old 08-24-2015, 04:27 PM
R Bedell R Bedell is offline
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With the engine at full throttle (3600 RPM's) take a DVM or VOM and measure across the battery terminals. Normal is in the 14.5 VDC range. What do you have..???
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  #3  
Old 08-24-2015, 06:38 PM
Phil21502 Phil21502 is offline
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I will tomorrow when I put the charged battery back in. Any ideas on the ammeter gauge reading?
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Old 08-24-2015, 06:46 PM
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I will tomorrow when I put the charged battery back in. Any ideas on the ammeter gauge reading?
It's not charging if it indeed is wired correctly with a working ammeter. Ground the "F" terminal briefly and read battery volts with a DVOM while running. Should reach 14 to 16 volts full throttle This will indicate tht you're generator is ok. After that you can inspect wiring and make sure all is wired correctly. The v/r's are adjustable but making sure wiring and proper ground connections plus generator operation has to happen
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Old 08-24-2015, 07:26 PM
Phil21502 Phil21502 is offline
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Grounded the f terminal with the neg battery post briefly and the ammeter didn't move at all. I'll break out the voltmeter tomorrow night and get some readings.
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  #6  
Old 08-25-2015, 06:42 PM
Phil21502 Phil21502 is offline
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12.45 volts at the battery during full throttle
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  #7  
Old 08-25-2015, 07:27 PM
R Bedell R Bedell is offline
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Is that with the F terminal grounded out...??? If so, you have S/G problems. It needs to go into the shop for analysis.
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Old 08-25-2015, 07:43 PM
Phil21502 Phil21502 is offline
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Yeah. If i did it right. Just used one neg clamp on the jumper cable on the f post and clamped the other end on the neg battery terminal.
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  #9  
Old 08-25-2015, 08:24 PM
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Is that with the F terminal grounded out...??? If so, you have S/G problems. It needs to go into the shop for analysis.
X2. It should be at least 13 IMO. When mine runs it's around 14.
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  #10  
Old 08-25-2015, 09:05 PM
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ol'George ol'George is offline
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Might look inside the starter/Gen, could be something simple like worn brushes,
they come apart easy.
Also makes me wonder as you say the battery was "dead" thinking maybe the cutout part of regulator stuck closed, and drained the battery totally dead.
-------or the key was left on
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