M4050 PTO grinding

tim_puckett87

New member

Equipment
M4050, M4900
Feb 28, 2022
3
0
1
Va
Hi, I'm new to the forum but figure I'll be a regular. I did a search for this and didn't come up with anything helpful. I recently traded for an old M4050DT and it has a few issues that I'm working on. When I lift the PTO clutch disengage lever and then try to engage the live pto theres a pretty bad grind before it engages. I'm thinking the PTO clutch may need adjusted but haven't had to do this on a Kubota. I went to order a service manual and was surprised to find they were over $100. I plan on ordering one but was hoping to put if off for a while if possible. I was wanting to see if what I am thinking is right on the clutch adjustment or if it may be something else. Also if the clutch does need adjustment could somebody walk me through doing it with all the specs I need for the adjustment. Thanks for any help you can give me.
 

North Idaho Wolfman

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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
32,611
8,179
113
Sandpoint, ID
Are you pushing the pedal down before you engage the PTO?
Because you're writing doesn't say that.

And if your doing it in the correct order, Clutch pedal down, engage PTO, release clutch pedal, then no amount of clutch adjustment is going to cure a grind issue.
Sounds like something is bad, ( bearing or one way clutch).
 

tim_puckett87

New member

Equipment
M4050, M4900
Feb 28, 2022
3
0
1
Va
Are you pushing the pedal down before you engage the PTO?
Because you're writing doesn't say that.

And if your doing it in the correct order, Clutch pedal down, engage PTO, release clutch pedal, then no amount of clutch adjustment is going to cure a grind issue.
Sounds like something is bad, ( bearing or one way clutch).
The M4050 has an additional lever that to the best of my understanding according to the operators manual works a secondary clutch for just PTO. Raise the lever and it disengages the pto clutch then engage the pto lever and then put the lever for the pto clutch back into the engaged position. According to the operators manual the foot clutch has nothing to do with the pto engagement process. Also according to the parts breakdown this is a dual disc clutch system with the rear being the PTO clutch so in that case when you engage that lever if it is not adjusted correctly it will not apply enough pressure to disengage the pto clutch. I know there are adjustments for the secondary clutch on other tractor brands because I have adjusted them for similar reasons and I would imagine this one is the same way, usually the adjustments have to be within a few 10 thousandths. Im just not sure what the specs are supposed to be for this tractor
 

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
32,611
8,179
113
Sandpoint, ID
I see where I'm off on this.
That is an odd model that uses 2 means of running the clutch pack, one pedal for the drive and one lever for the PTO clutch section.
Get the WSM (AKA service manual) and it will go through how to adjust the linkage on the Clutch and the clutch pack.

97897-10810
 

JohnDB

Active member
Lifetime Member

Equipment
M4500DT
Jun 9, 2018
417
74
28
NZ
Welcome to the forum.
A neighbour has an M4050DT, and the PTO clutch lever/engagement system looks exactly the same as my M4500DT. Here's how the M4500DT manual says to do it.
1646120615193.png

Hope this works for you - let us know.
 
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Markj

New member

Equipment
Kubota m4500dt
Nov 5, 2022
1
0
1
Morning sun ia
Welcome to the forum.
A neighbour has an M4050DT, and the PTO clutch lever/engagement system looks exactly the same as my M4500DT. Here's how the M4500DT manual says to do it.
View attachment 75893
Hope this works for you - let us know.
Do you know the part numbers for the pto clutch lever with the mounting Block and the rod linkage
 

JohnDB

Active member
Lifetime Member

Equipment
M4500DT
Jun 9, 2018
417
74
28
NZ
Do you know the part numbers for the pto clutch lever with the mounting Block and the rod linkage
Good place to find those is the Messicks website parts list for your model of tractor. The images are pretty clear, you can probably identify and order them at the same time. Or try Barlow Equipment - advertising on this forum.
 

AusM4500dt

New member

Equipment
M4500dt
Apr 25, 2025
4
0
1
Australia
Welcome to the forum.
A neighbour has an M4050DT, and the PTO clutch lever/engagement system looks exactly the same as my M4500DT. Here's how the M4500DT manual says to do it.
View attachment 75893
Hope this works for you - let us know.
Sorry to resurrect such an old thread.

I just got a m4500dt and had a similar issue with some grinding when I'm shifting PTO lever into "Live". I tried it about 4 times. It did go into "Live" and the PTO started turning and there was no more grinding. There was no grinding when shifting it to "Ground".

My PTO clutch lever pulls up a LOT further than 40-50mm. Does that mean it needs adjusting to shorten the control rod?

Thanks!
 

007kubotaguy

Well-known member
Lifetime Member

Equipment
B7100DT L245DT JD 2355
Dec 23, 2012
665
272
63
Herald Calif.
The PTO clutch lever should have about 1" to 1 1/2" of free play. If it has too much or too little adjust the linkage. When the PTO is not in use you want to disengage the PTO shift lever. Put it in neutral and put the PTO clutch lever down.
 

AusM4500dt

New member

Equipment
M4500dt
Apr 25, 2025
4
0
1
Australia
Thanks.

I adjusted the PTO lever so the free play was within reference values. Unfortunately it still grinds briefly while pushing the PTO gear lever to "Live", after leaving the PTO clutch lever up for about a minute.

Does that mean the problem is elsewhere?

Kind thanks!