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Harry Ferguson Tractors Discussion Forum
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idle rpm question

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Overunder1

07-15-2006 16:51:40




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My TO-30 runs great, I installed an accurate tach and find max rpm to be +-2100 rpm. Runs smooth, governer kicks in to maintain rpm while running the rotary mower @1500rpm, idle is kitten purfect but I am surprised to find it idles at @750 rpm. Given that it runs so well should I attempt to lower it to the factory 450 or leave it alone, and if so is most of the adjustment through the governer linkage?
Thanks
-Lee

ps: 2 hours cutting today in 95 degreee heat, no overheating issues and thanks to John and the Marlow method that heacy cutter works like a champ and never needed any further fiddling :)

pps: 2nd gear seems slow but third is too fast, anyone got a 2 1/2 gearset lol

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Chris M (TX)

07-16-2006 11:27:13




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 Re: idle rpm question in reply to Overunder1, 07-15-2006 16:51:40  
Quote from overunder: [ps: 2 hours cutting today in 95 degreee heat, no overheating issues and thanks to John and the Marlow method that heacy cutter works like a champ and never needed any further fiddling :)]

What is the John and Marlowe method you speak of? As soon as I get my TO30 running right I have 2 acres with high grass to cut. :) Any tips appreciated!



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John (UK)

07-16-2006 13:32:53




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 Re: idle rpm question in reply to Chris M (TX), 07-16-2006 11:27:13  
It"s not my method at all, all credit must go to Marlowe for this, I agree with it though. Here is Marlowe"s post from a couple of years ago:-

Posted by marlowe on June 23, 2004 at 16:01:09 from (209.103.204.81):

In Reply to: position control...chains?? posted by mr chapp on June 23, 2004 at 06:16:49:

dear mister chapp. i have sold and serviced hogs for years and see this all the time. PLEASE don"t take this wrong but it"s a real common mistake that they are not being mounted right.i know what your thinking how hard is it to put a hog on a tractor and go cut some grass? but!! your hog has a tail wheel right? your tractor has 2 lower lift arms right? set your hog on a 4x4 so it is level lower your tail wheel so it"s on the ground. now put your tractor on but[[[[ DON"T]]] hook up the PTO with tractor running put the 3pt. control lever in the middle of the range and turn your top link so it will get longer and you will feel you 3pt. raise just a little and the stop but when you make the top link long it will raise a little more that because the control piston under the set is being pushed in and that makes you 3pt. lift until the pressure is released.with a little fine tuning and a little setting of the tail wheel up or down for the height of cut you want your hog will cut at the height you want. if you have ANY questions call me i will help you set it right 1-920-446-3296 your hog should not be hanging on the tractor when your cutting but riding on the tail wheel and the 3pt. at a set height and that is controlled by your top link. good luck and if you need help call.

So there you are from the Hog Man himself, if you have problems, contact him or email me to discuss it further....John PS Don"t try to cut too low or too much at any one time,take only part of a cut if you need to, make sure that the blades are sharp as they will be easier to drive also make sure that you wash the radiator matrix out thoroughly with a hose pipe or air line, clean out from the engine side to the front and go into all the corners and check that you can see though it with a flashlight and do this regularly as it is drawing in all that dust you see flying around and some of it sticks in the radiator and then the engine overheats and cracks the block and you wont be happy.

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Jerry/MT

07-15-2006 21:55:01




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 Re: idle rpm question in reply to Overunder1, 07-15-2006 16:51:40  
Don't fiddle with the governor linkage.You adjust the idle speed with the spring loaded screw on the engine side of the carburetor attached to the throttle lever that's cunningly designed to burn your hand while you try to adjust the speed. To reduce the speed you need to screw it out (i.e. CCW)



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overunder1

07-16-2006 04:14:59




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 Re: idle rpm question in reply to Jerry/MT, 07-15-2006 21:55:01  
Thanks Jerry. I went digging in my shop manual again and finally found one very short sentence describing idle speed adjustment in the governer section with no illustration or further mention of this screw anywhere. Will see this morning if I can slow it down.
-Lee



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steveormary

07-16-2006 13:48:48




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 Re: idle rpm question in reply to overunder1, 07-16-2006 04:14:59  
Overunder1;

2nd gear should be about right for hoggin. I used 1st.gear alot. Seems to make smoother cuts.
Oh well,on the 4spd trannies 2nd was too slow and 3rd too fast. And on 5spd.trannies 3rd was slow and 4th too fast.

steveormary



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steveormary

07-16-2006 13:45:19




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 Re: idle rpm question in reply to overunder1, 07-16-2006 04:14:59  
Overunder1;

2nd gear should be about right for hoggin. I used 1st.gear alot. Seems to make smoother cuts.
Oh well,on the 4spd trannies 2nd was too slow and 3rd too fast. And on 5spd.trannies 3rd was slow and 4th too fast.

steveormary



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