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 | Tim S.
Join Date: Posts: 1 
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2001-10-27 32698
I just purchased my first compact deisel tractor and I love it! I got the TC25D with loader, rear blade and 60" belly mower. The engine seams a little sluggish going uphill while mowing. Is this damaging to the engine to lug it, out or is it just the nature of a deisel.
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| Bird Senter
Join Date: Jun 1999 Posts: 962 
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2001-10-28 32706
Tim, it's hard to say without seeing or hearing the tractor. You really don't want to "lug" the engine very much, but which gear range are you using, what rpm is the engine running, how many rpm does it drop going uphill, etc.? For it to change sounds and drop a little (a hundred rpm maybe for a short distance), I wouldn't worry about, but if you're talking about it struggling, then I'd use a lower gear range, or ease up on the hydro pedal to go slower but at the same rpm. ....
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 | BillMullens
Join Date: Jun 2000 Posts: 649 Central West Virginia 
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2001-10-28 32717
If your tractor is new (i.e. not broken in) lugging would be bad for it. I think it was the owner's manual that defines lugging as the engine isn't responsive to increasing the throttle. Most break-in procedures specifically warn against 2 things: lugging the engine or running at constant rpm for long periods of time. Once the engine is broken in, it is a matter of some debate about lugging. Probably best to slow down. Bill ....
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| Rick Morgan
Join Date: Posts: 1
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2001-10-28 32718
Tim--It took me a few tries to get used to the hydrostatic xmsn while mowing hills; if I don't ease off the hydro pedal (rather than pushing down as though giving more "gas"), my tractor tends to lug a bit. Backing off on the pedal slows down the tractor, raises torque (as I understand it, anyway) and definitely makes the mower happier. ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley 
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2001-10-29 32724
I suppose I tripped myself up several times when I first got my tractor by using familiar automobile habits--and I've even got gears and operated a tractor when I was a kid. Both Rick and Bird mentioned easing off the HST pedal. It's a little difficult to break the automobile habit of pushing on the gas when more power is wanted. With tractors, the throttle really sets the engine rpm. Unlike a car, the driver really doesn't do anything to change fuel delivery--the engine governor does that. It's easy to interpret the HST pedal as 'the accelerator', but it actually changes the gear ratio (up is a lower gear). It's the same thing as shifting to a lower gear if a car won't make it up a hill when the accelerator is full down. A tractor lugs when a load is heavy enough so the governor is unable to increase fuel delivery and maintain the rpm set by the throttle. Anyway, I still can remember when I finally got the idea while operating one of my Uncle's Farmalls when I was a kid. ‘Oh’ I thought! You set the rpm for the work you're going to do and you set how fast you go with the transmission. I also remember a young cousin doing 'one-ups-manship' on his older brother. He came into the house to tell his parents that his older brother had an accident but wasn't injured. Said his brother upset the plow in the ditch because he was using road gear. I think I had it figured out by that time: Gear, not throttle, equals speed. ....
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 | cutter
Join Date: Feb 2000 Posts: 1307 The South Shore of Lake Ontario, New York 
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2001-10-29 32746
Tim, I had a TC29D with a 72" belly mower. Running at around 2300rpm and a 3.5" cutting heigth while mowing a couple inches or so of grass in mid-range the machine never changed engine pitch, even uphill. Of course, I slowed when approaching the hill and used caution while on it. For most mowing, I never used the 2600rpm pto speed. I would think the larger deck on mine would negate some of the additional HP over your 25, to eqalize the tractors for comparison purposes. Perhaps using high range would have changed this whole picture, but that particular tractor goes so fast in mid-range, I never tried it. ....
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| Tim S.
Join Date: Posts: 1
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2001-11-01 32889
Thanks to all responses. I found that the problem was that I was pushing the hydro harder to get more power. When I backed of on the foot pedal The thing worked like a trooper. I used to run a 1962 nuffeild 42 horse power tractor and never had a need for more power. I was afraid that I made a mistake by not getting a bigger engine but thanks to your kind advice I am quite happy thanks again
Tim ....
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