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 | PJ2
Join Date: Jul 2003 Posts: 4 MI. 
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2002-05-18 38751
I just bought a cub cadet 7265 hydro with a 6 ft 3pt mower.
The problem I have is if the mower is running even at an idle if I push in the clutch I here a loud clattering sound. the dealer said its just the overring clutch.
anyone hearing this on there tractor?
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| larry
Join Date: Mar 2004 Posts: 0 St.Davids
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2002-05-18 38757
Try unhooking the PTO,then use the clutch with the PTO engaged
If there is no chatter your dealer is right or there is something wrong with the gears in the deck ....
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| rabidem1
Join Date: Jul 2003 Posts: 3 stockton NJ
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2002-12-08 45871
I hae the saaam machine 7265 and gt the same racheting niose when thepto is in gear and I deprssthe clutch. I was told it was safety mechanism. I avoid the racheting noise by simultaneously depressing the clutch nd shifting the PTO out of gear ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley 
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2002-12-09 45903
I haven't thought about pto over-running clutches used in tractors with HST. Usually you hear of them used on gear tractors that lack live pto's. In this application the clutches prevent a cutter with high inertia and running at pto rpm from feeding through the TX and driving the tractor forward when the engine clutch is disengaged.
A pto implement can't drive the wheels on tractors with HST's or live PTO but I suppose there's no reason why an over-running clutch couldn't be used. One would save some wear and tear on the pto clutch each time the engine rpm dropped below the cutter speed. I think that engaging and disengaging the pto also creates some wear and tear, so I'd probably put up with the ratcheting. Since an over-running clutch would disengage only when the engine rpm is less then the PTO speed, setting a hand throttle at pto speed for the cutter and leaving it there should minimize the ratcheting and also reduce wear and tear.
Many PTO also have brakes that stop the drive rapidly when the drive is disengaged or the engine stopped. That's another possible explanation for a sound, but the description does sound like an over-running clutch.
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| Steve in Buffalo NY
Join Date: Posts: 1
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2002-12-09 45905
I have a 7265. It is a override clutch. Or rachet. Or whatever. It does make a racket but is perfectly normal. The advice of clutching than disengaging the PTO lever is also correct. You will notice the same noise if you reduce rpm suddenly with the throttle. The idea I'm told is so the implement RPM inertia never pushes the tractor or engine. ....
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 | Art White
Join Date: Jan 2000 Posts: 6898 Waterville New York
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2002-12-09 45916
Steve is correct on that PTO. It does allow the PTO to freewheel rather than to push the tractor. ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley
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2002-12-10 45952
Well, for purposes of this discussion the important thing was to identify the sound and that it is normal. But then, maybe I'll learn something as well.
I know that Ford 1710's have a standard TX driven pto that has an internal over-running clutch for the reasons mentioned. The optional synchromesh TX that I have also has live pto through a two stage clutch, and that TX doesn't have an over-running clutch. I always thought this is because pto output shaft rotation can't drive the wheels through the TX when the TX clutch is disengaged but the pto clutch is engaged. I've heard the same reasoning applied to HST TX's. I can see that it's desirable to have a clutch in an independent pto drive line so inertia wouldn't stress a pto clutch given sudden decreases in engine rpm, but I didn't think the rear wheels would be driven in live pto systems. Maybe there are new designs that I haven't yet caught up with.
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