Jimna 1000 RPM or 540 PTO Speed for Mower: Chinese Tractors -- Jinma Farmpro Agracat  -- Chinese Tractors Discussion Forum and Review Jimna 1000 RPM or 540 PTO Speed for Mower: Chinese Tractors -- Jinma Farmpro Agracat -- Chinese Tractors Discussion Forum

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Discussion Boards > Active Subjects > Messages as Posted > Chinese Tractors -- Jinma Farmpro Agracat Forum

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 02-06-2012, 21:29 Post: 182298
bogman



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 Jimna 1000 RPM or 540 PTO Speed for Mower

On my JM 200, there is a lever between the raise/lower hydralic lift and the engage/disengage lever for the pto. It also has the en/dis letters on it. What does this lever do?

Also is it better to mow with a finishing mower in the 1000rpm range or the 540? I can see where faster should be better, but if 540 gets the job done why not use it?






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 02-06-2012, 22:03 Post: 182299
kthompson



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 Jimna 1000 RPM or 540 PTO Speed for Mower

I am assuming the EN is for engage and the DIS is for disengaged.

What speed PTO to use, simple the one the pto equipment is made to use. If made for 540 then use it and my guess is you will find your mower is made for 540 if a 3 pth mower.






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 02-06-2012, 22:11 Post: 182302
bogman



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 Jimna 1000 RPM or 540 PTO Speed for Mower

Hi KT, I'm talking about another lever between the lift and pto levers.

I got this mower from a neighbor whose father died and he didn't want it. He has no idea what the operating speed should be.






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 02-06-2012, 23:21 Post: 182304
greg_g



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 Jimna 1000 RPM or 540 PTO Speed for Mower

Unknown lever should be for the differential lock. Never use 1000 PTO position unless it's specified by the implement manufacturer.

//greg//






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 02-07-2012, 08:03 Post: 182306
kthompson



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 Jimna 1000 RPM or 540 PTO Speed for Mower

Bogman, have you looked carefully on the mower even the gear box for a speed? Do you know the brand of mower and model and is it rough cut or finish mower. My experience being limited but think it will be a 540 rpm mower. What 1,000 RPM equipment "I" have seen are in 100 hp and up range.






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 02-07-2012, 09:12 Post: 182307
auerbach



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 Jimna 1000 RPM or 540 PTO Speed for Mower

Except for the occasional antique, North American turning implements are designed for 540. Faster speeds (for specialized attachments such as paddy frothers in Asia) invite damage and injury.

Besides locking it into 540 if your tractor has options, you should try to find out what engine speed gives 540rpm at the PTO.






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 02-07-2012, 12:08 Post: 182314
Murf

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 Jimna 1000 RPM or 540 PTO Speed for Mower

While I'm not necessarily advocating it for anyone else, we used to use the 1,000 rpm setting with 540 rpm equipment that had very low power requirements like mowers cutting very little or blowers, but only did so with the engine rpm's lowered to the point where the rpm's were still only 540 at the output.

This allowed the engine to be run at far lower rev's while still making 540 rpm at the PTO shaft.



Best of luck.






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 02-07-2012, 14:46 Post: 182319
bogman



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 Jimna 1000 RPM or 540 PTO Speed for Mower

Thanks guys for the input. Murf hit on what I was getting at. You ought to be able to save fuel running at lower engine rpms with the 1000 rpm pto setting.

But aren't you supposed to keep the engine rpms in the green area?

This finish mower was a Woods L59 belly mower that originally was powered by a big 15" belt pulley that fit directly on the pto shaft with a long belt that ran down and under to the mower deck.

It has since been modified to a 3 pt. hitch configuration by the use of a gearbox off an old bushhog with the 15" pulley under the gearbox driving the pulleys on the mower deck.

So Greg you would engage that lever in a case where you were pulling something heavy and one of the wheels started spinning?






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 02-07-2012, 17:00 Post: 182320
Murf

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 Jimna 1000 RPM or 540 PTO Speed for Mower

Quote:
Originally Posted by bogman | view 182319
But aren't you supposed to keep the engine rpms in the green area?



I think the 'green area' you're talking about must be a mark on the tach, if so that's a guide to tell you what rpm's the engine must be doing to get you proper PTO speed.

However, if 2,400 engine rpm (in our case) gives 540 PTO rpm, then on the 1,000 rpm setting about 1,300 rpm on the engine would be 540 rpm at the PTO.

Just be very carefull not to too overload the engine, lugging it will be hard on it and the PTO clutch.

Not to speak for Greg, but yes, the diff. lock makes both wheels turn at the same time regardless of traction. Not much good for turning a corner, but great for helping you out of a sticky spot.


Best of luck.






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 02-07-2012, 17:10 Post: 182321
greg_g



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 Jimna 1000 RPM or 540 PTO Speed for Mower

Quote:
Originally Posted by Murf | view 182314
While I'm not necessarily advocating it for anyone else, we used to use the 1,000 rpm setting with 540 rpm equipment that had very low power requirements like mowers cutting very little or blowers, but only did so with the engine rpm's lowered to the point where the rpm's were still only 540 at the output.This allowed the engine to be run at far lower rev's while still making 540 rpm at the PTO shaft.Best of luck.

Larger tractors and/or heavy equipment maybe. But a 20hp Jinma is simply incapable of enough torque to consider that.

//greg//






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Discussion Boards > Active Subjects > Messages as Posted > Chinese Tractors -- Jinma Farmpro Agracat Forum

Thread 182298 Filter by Poster:
auerbach 1 | bogman 5 | DennisCTB 1 | greg_g 7 | kthompson 4 | Murf 5 | richwaugh 3 |




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