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#1
06-12-2025, 01:39 PM
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2001 Cub Cadet 3240 hydrostat question
I picked up a 2001 Cub 3240 (the 40th anniversary edition) with a Kohler 22 hp engine and shaft driven 54" deck. It has the cast iron hydrostat . Has 800 hours but engine runs smooth and strong.
My question is, when pushing the pedal to begin to move forward it is very jerky when slowly/lightly pushing the pedal. Once going it's smoother and easier to control speed, it's just on "take off" that it's jerky. Also, and oddly, when I pull out the lever to put the hydro in neutral, the machine will still drive forward and backwards just fine and with no jerky start, nice and smooth. Not sure what's going on with that. Anyone have any thoughts on fixing the jerky take off or why it drives in neutral ? I changed the fluid and filter and it made no difference. -Thanks. 
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#2
06-13-2025, 05:11 AM
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When you pull the hydro release lever the spring plate pushes in on the small button for the hydro release bypass valve. Sometimes that little button is froze in place and will not release the hydro. Clean it good and spray some PB or Kroil on it and work it to free it up.
What filter and oil did you use on the hydro? There is some good reading on the differential lock problems on these great little tractors if you are not aware of them. Got any pics of your machine?
__________________
This ain't no hobby....it's an addiction
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#3
06-14-2025, 10:27 AM
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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.
This website and forum are not affiliated with or sponsored by MTD Products Inc, which owns the CUB CADET trademarks. It is not an official MTD Products Inc, website, and MTD Products Inc, is not responsible for any of its content. The official MTD Products Inc, website can be found at: http://www.mtdproducts.com. The information and opinions expressed on this website are the responsibility of the website's owner and/or it's members, and do not represent the opinions of MTD Products Inc. IH, INTERNATIONAL HARVESTER are registered trademark of CNH America LLC
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