Install larger tires. 6. 3. Many hydrostatic transmission problems on a Cub Cadet tractor are due to a transmission control rod misalignment. Fully depress forward pedal. Turn the transaxle up side down and let the fluid drain overnight. The Hydro adjustment's of this 316 as far Different than that of my 1983 John Deere 318. The hyro pump is not going to instantly disintegrate if you exceed the listed RPMS, however service life will suffer. Remove the drain plug (usually on top of the transaxle), or remove the breather tube. Hydrostatic transmission adjustment It is a very good machine with only about 100 hours on it. Sitting in the tractor seat, start engine. Submitted: 8 years ago. I wish to adjust it for a bit more reverse, as it has lost speed in that direction to a crawl. When the pump is full of air instead of oil, it can’t generate the pressure needed to provide power. Checking Forward and Reverse Pedal Travel 1. Zero turn hydrostatic transmission problems can start with air in the system, a condition known as cavitation. Engage transmission by placing freewheel control in engaged position (See "TO TRANSPORT" in this section of manual). The first thing you should try is bigger tires. 8. After the engine is running, move throttle control to half (1/2) speed. With motion control lever in neutral (N) position, slowly disengage clutch/brake pedal. I have a Poulan 42" rider mower with a Hydro-Gear transmission T2-AABC-1x1A-1GX1. (See Parking Safely in the SAFETY section.) Stall Guard-Automatically compensate for loads generated by terrain and operating conditions, thus prevents engine stall out.. 2. The HST Plus transmission can be set to operate as follows: 1. As a result, I drained all the fluid from the transmission case over about a day. I explored the John Deere web site part's list for this late model 316. It has an automatic (hydrostatic) transmission with the speed and directional control lever on the right fender as opposed to the foot pedals. 2. Hydrostatic transmissions feature control rod linkage from the speed control lever (or foot pedal on some models) to the hydrostatic transmission. thanks. Adjusting Forward and Reverse Pedals Adjust forward and reverse pedals to make sure hydrostatic transmission will operate within full range of speed. (By the way, hydrostatic transmissions use engine oil - not transmission fluid) With that thought, I wondered about the properties of cold oil vs warm oil and also would bubbles/foam forming in the oil mimic the need to purge trapped air from the transmission. This is pretty common in zero-turn mower transmissions. I hope someone can tell me how to proceed. Could the problem be a slipping drive belt? These tweaks can help you save cutting time by elevating the mower’s speed, quickening its response, and smoothing its maneuvering. Fill the transaxle with approximately 2.5 quarts or 80 ounces of fluid. This control rod connects to the hydrostatic transmission at a regulator valve, which determines the rate of fluid flow through the transmission … How to make a hydrostatic lawn mower faster: proposed hydrostatic transmission modifications. There are limits to the input RPMS on the hydro (see link if it is a hydro gear). If your tractor has been in use for a few years, this form of 'creeping' may occur. The transmission control rod causes the tractor to rock slightly forward or backward when the engine is powered high idle speed while it is in neutral. Proper Operation of the Kubota HST+ transmission. They show there to be a Long Threaded rod on the right rear end lower location area of the Transmission that has a spring on it. Show More. ... Change … Park machine safely. To answer your question the practical ways to speed one up is larger diameter wheels/tires on the drive axle or speeding up the hydro pump. 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