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Hey everyone;

We've been having some problems with our MX6. Last week, we noticed the slip clutch was literally burnt. My dad had been mowing, and then never noticed it burning up. He just told me that the PTO had stopped working. Now, being that our land is 2.5 hours away from where I live, I went to take a look. Sure enough, the slip clutch was done. So, I called the local dealer who came out, took it back and rebuilt it.

This past Saturday, we attempted to mow again...and well...we smelled some burning. So we stopped and took a closer look. Sure enough, there was smoke coming from the spindle between the gear box and the slip clutch. At this point, I really didn't know what was going on. So, we made a phone call to my father-in-law, a very mechanical type. He asked us to look inside the gearbox for oil....and it was bone dry! :gaah::gaah:

We decided to fill it with oil...and then we noticed our problem....major leakage! Check out this video from our youtube channel: https://youtu.be/a6Enncj70U4

I'm calling the dealer in the morning, but I'm curious to know...what do you think has caused this gear box to leak ALL the oil out?

We picked this up at an auction, and it seemed like it hadn't been used much at all. Could this be a manufacturer defect?
 

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some of the 6 series Mowers had issues you can search on this forum.
I forget exactly what but recall reading about them.

My guess if its like my Woods BH It got long grass or wire wrapped around spindle above the stump jump plate and it fouled up the seal.
Always check oil before use...It may be too late now but you will know when you get it apart what damage has been done.

Hope for the best.
 

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Im guessing the seals dry rotted, probably sat out for a long time with no oil in the gear box. Fingers crossed for you that it didn't cause a lot of damage. Those seals can be a real pain to replace too.
 

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ugh...repair!

Well, the local dealer picked up the MX6 this week. I received a call this morning...gear box is totally shot. Cost to replace it is cheaper than the cost to rebuild it. So, with the slip clutch rebuilt and the new gearbox we're looking at $2200 in repair costs! :cry::cry::gaah::gaah:

Lesson learned...we will check the oil level EVERY time it's used from now on. OUCH!!
 

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What oil does the gear box call for? That stuff coming out looked really thin. Another question, how come you guys don't bale all that? Looks like some money could be had there by leasing it out to be worked.

Sorry to hear about that hefty bill, that sucks!
 

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Discussion Starter #6
Well, the local dealer picked up the MX6 this week. I received a call this morning...gear box is totally shot. Cost to replace it is cheaper than the cost to rebuild it. So, with the slip clutch rebuilt and the new gearbox we're looking at $2200 in repair costs! :cry::cry::gaah::gaah:

Lesson learned...we will check the oil level EVERY time it's used from now on. OUCH!!

I believe it calls for a 90 weight gear oil. So, we just lost our hay tenant. Right now, we're in survival mode. We're trying to keep it mowed...hoping someone else wants to tend it. We live 100 miles from the farm, so I'm not sure how we could justify going into the hay business ourselves. We've got no barns, no baler, no haybine or mower/conditioner, no sprayer large enough. Although, I've toyed with the idea of distance farming, I'm just not sure it's feasible while working full-time and living so far away. Right now it's just me and my sons; we're just weekend warriors having an adventure.

Of course, I'm open to ideas if anyone has ever farmed part-time AND from a distance! I'm thinking we'd be a first for that.
 

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Well, the local dealer picked up the MX6 this week. I received a call this morning...gear box is totally shot. Cost to replace it is cheaper than the cost to rebuild it. So, with the slip clutch rebuilt and the new gearbox we're looking at $2200 in repair costs! :cry::cry::gaah::gaah:

Lesson learned...we will check the oil level EVERY time it's used from now on. OUCH!!
sorry to hear of the price of rebuilding gear box-that hurts for sure.

so.............tonight as i was going thru Tractor house's new sale magazine i come across a nice looking MX6 brush hog, and i think of u right away:unknown::thumbup1gif: hey its on sale @ for the low sum of $2,900. u could have a spare one to fall back onto.:lol:

it's about half way thru ---left side of page. if u want the add, let me know-ok:good2:
 
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I believe it calls for a 90 weight gear oil. So, we just lost our hay tenant. Right now, we're in survival mode. We're trying to keep it mowed...hoping someone else wants to tend it. We live 100 miles from the farm, so I'm not sure how we could justify going into the hay business ourselves. We've got no barns, no baler, no haybine or mower/conditioner, no sprayer large enough. Although, I've toyed with the idea of distance farming, I'm just not sure it's feasible while working full-time and living so far away. Right now it's just me and my sons; we're just weekend warriors having an adventure.

Of course, I'm open to ideas if anyone has ever farmed part-time AND from a distance! I'm thinking we'd be a first for that.
Here ya go. Pretty much use whatever you want, based off of air temp.
OMW49246: MX5, MX6 and MX7 Rotary Cutters, Block File: AG_OUO1078_311_19_19NOV99.htm

Entire manuals contents....
OMW49246: MX5, MX6 and MX7 Rotary Cutters table of contents

That's a long ways. It would be hard to beat the rains too, if it came down to it. Hopefully you can make your money back on the cost of repair. Like BigJim55 said, It might be more beneficial to buy a different used one, and keep the broken one around for parts.
Thanks for sharing the vid.:bigthumb:
 

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I would use the money to buy a different brand. Bush Hog 296 or Woods Brushbull 720 would be my first two choices.

Curious was the gear box marked made in Spain or China?
 

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We did attempt to put grease in the box. Then, we were going to top it off with gear oil. Once we saw the gear oil was not staying inside and saw the leak...it was time to call the dealer.

I'm scared now that when we get it back, we will have the same problem...esp. With the slip clutch! I am not a mechanic and I'm not sure how to adjust it. I just need it to work!

And which shaft is breaking on these models? I can't afford to replace it!

I would have filled the case with tube grease. And kept going. Especially if it wasn't making any noise.

With all the broken shafts on the 6 footers IDK if I'd keep it.

You can't rely on JD to have the clutches adjusted correctly either. It's the world we live in..
 

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I'm scared now that when we get it back, we will have the same problem...esp. With the slip clutch! I am not a mechanic and I'm not sure how to adjust it. I just need it to work!
If you don't have the instructions to set/adjust a slip clutch you can Google them.

You will have to know how to do it. It isn't a one time deal. It needs checked and adjusted periodically. If it sits for any length of time it can seize and then not slip when needed.

As to which gearbox is better, China vs. Spain, I only have a smarta$$ answer.....

Since I have been down this road (bad gearbox) (different cutter than yours) I won't pour salt in the wound.
 

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We did attempt to put grease in the box. Then, we were going to top it off with gear oil. Once we saw the gear oil was not staying inside and saw the leak...it was time to call the dealer.

I'm scared now that when we get it back, we will have the same problem...esp. With the slip clutch! I am not a mechanic and I'm not sure how to adjust it. I just need it to work!

And which shaft is breaking on these models? I can't afford to replace it!
The shaft that has the stump jumper and the blades attached to it.. Shearing off right where it comes through the deck.
I'd say it's been enough reports on them breaking, that something is clearly wrong.
That seal on yours shouldn't be leaking like it is either..


I wouldn't worry with the gear oil, fill it with tube grease only, run for a bit and fill it again. I know of some that after years are still going strong.
 

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I'm not sure which gearbox we have. Which is better?
China, the ones from Spain were the ones that were breaking the output shaft.
 

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When they leak, I never repair the seal and refill. I just pump it full of gun grease.

Dave
 

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I would use the money to buy a different brand. Bush Hog 296 or Woods Brushbull 720 would be my first two choices.
I can't afford to replace it!

You mentioned above about $2200 in repair costs. Is that an additional $2200 or does that include whatever you've already done with the slip clutch?


I was shopping for rotary cutters about 6 weeks ago. I was looking at an MX-5 and also a Woods Brushbull BB60XC. The "XC" designates that it comes with a stump jumper and a slip clutch. Most of the dealers around here were selling the Woods for $2450. I talked one of the local JD dealers down to $2150. BUT, I found a Massey-Ferguson dealer about an hour away listing them for $1850. It was just red instead of green. I know the MX-6 that you have is 72", so it's going to be a little more, but if repairing the gearbox is the lion's share of the $2200 you mentioned, I'd certainly look at going new. The same dealer is listing a Woods BB72X for $2300. It comes with a 6 year warranty on the gear box.

Plus, it also sounds like this is just grass and not "brush", so even a lighter duty cutter like a County Line from Tractor Supply might do the job for less than the repair costs.

Good luck with this. I really feel for ya!
 

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From tractorhouse, here are couple of Bush Hog 286 models; 110HP gear box and slip clutch Rated to cut 2 1/2". One is $1250, the one with chains is $2100 Either would be better than putting money in the MX6
 

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If you need want heavier Bush Hog 296 has 130HP gear box, slip clutch and rated to cut 3" :bigthumb:

From tractorhouse; one for $1900 and one with chains for $2300
 

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