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#1
01-29-2024, 03:11 PM
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Cub Cadet 125 Voltage Regulator Questions
The voltage regulator on my 125 started acting erratically last week when I ran it to plow snow. I gently tapped on it and it gave a nice spark shower, so I figured it was time for a new one. I ordered it from one of the advertisers on this board.
It is listed as the replacement for the original part number, and I have bought parts from this source before with no issues so I am confident it is the correct regulator. But it is different from the old regulator and I am hesitant to wire it up without resolving my concerns. The old regulator has 4 terminals: GRD, B, G & F. Ground, Battery, Generator and Field. I traced existing wiring and it conforms to both the illustration in the manual (GSS-1398, page 1-29) for Models 72, 104, 124, & 125, in the Technical Library of this site. It also matches the wiring diagram by R. Bedel for those same models. GRD goes to ground, "B" goes to the ammeter, "G" goes to the "A" terminal on the generator and "F" goes to the field. That checks out. The new regulator has different terminals. It has GEN, F, BAT & L which I interpret as Generator, Battery and Field, which I understand. My question is for the "L" terminal. It has no Ground terminal. I opened the cover on both and there are internal differences too. The terminals are arranged differently, but as long as I connect it correctly electrically, there should be no issue. What do I do with the "L" terminal? I can wire the Field to the "F" terminal, the Ammeter to the "BAT" terminal the generator armature to the "GEN" terminal, no matter where they physically are, as long as it's electrically correct and skip the separate ground, but I'm not sure what to do with the "L" terminal. Any help you can offer is greatly appreciated. 
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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.
MTD Products, Inc. of Cleveland, Ohio purchased the Cub Cadet brand from International Harvester in 1981. Cub Cadet was held as a wholly owned subsidiary for many years following this acquisition, which allowed them to operate independently. Recently, MTD has taken a more aggressive role and integrated Cub Cadet into its other lines of power equipment.
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