mattd860 161 #1 Posted October 30, 2013 My 753 runs and drives great and is my favorite tractor however, lately it's been speeding up when I drive downhill. If I'm pulling a loaded trailer the tractor can speed up significantly. Has something let loose in the manual gearbox causing this to happen? Could it be low on gear oil? Share this post Link to post Share on other sites
ol550 825 #2 Posted October 30, 2013 If the engine isn't speeding up my bet would be that the transmission drive belt is slipping due to not having enough spring tension. Try putting your foot under the clutch pedal and pulling up to see if that helps. Share this post Link to post Share on other sites
mattd860 161 #3 Posted October 31, 2013 So there's probably nothing wrong with the internals of the transmission? Share this post Link to post Share on other sites
stevebo-(Moderator) 8,040 #4 Posted October 31, 2013 I would say that tractor is deemed useless and should be sold asap (to me)-lol. I agree about the belt slipping a bit. I have the same thing on my 702 that I used today to pull the heavy lawn roller. Share this post Link to post Share on other sites
specialwheelhorse 174 #5 Posted October 31, 2013 You know I'm older than dirt and I speed up going downhill as well as slowing down a lot going uphill !! 1 Share this post Link to post Share on other sites
mattd860 161 #6 Posted October 31, 2013 lol. You guys are hilarious Share this post Link to post Share on other sites