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Old 03-08-2013, 09:10 AM
kycub kycub is offline
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Join Date: Feb 2013
Location: Kentucky
Posts: 50
Default S/G questions?

Being new to Cubs, I have a couple questions on the S/G system, and how it works. I have a Cub Original, and a 100. I have rebuilt both S/G's, and the 100 has a new V/R. Both have new batteries. I may be going about it wrong, but to verify the system is charging, I use a voltmeter and ground it at the battery, and touch the BAT terminal on the S/G with the other lead. On the "O", I get a 9-10V reading, but on the 100 the V will range from 1 to around 14, and spikes back and forth. My questions are: Is this normal? Is the S/G supposed to charge the batt, or just generate enough voltage to keep the engine firing? Thanks for help in advance!
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Old 03-08-2013, 09:55 AM
R Bedell R Bedell is offline
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The S/G serves two purposes. (A) Starts the engine, and (B) Charges the battery, hence the name Starter/Generator or S/G.

The indications you should see is with the engine at full throttle at the battery would around ~14.0 VDC.

This is in consideration, that all is performing as it should.

If you see lower than 14.0 VDC, then it will mostly likely be a bad (or incorrect) V/R and/or bad wire connections in the "charging circuit" to include grounding.
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Old 03-08-2013, 10:04 AM
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darkminion_17 darkminion_17 is offline
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Just hook up the test leads to the battery. + to + -to- .You should get around 13-14 volts when running.
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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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