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Old 08-24-2019   #1
Bores23
New Member
 
Join Date: Aug 2019
Location: Stratford, WI
Equipment: B7610
Posts: 4
Default B7610 with King Kutter XB Mower Question

I have a B7610 with a 4' King Kutter XB brush mower. I used it earlier this spring and engaged the PTO at idle and it seemed to engage fine ( a little mower shaking to get started but i believe that is normal ) When I used it yesterday and engaged the PTO at lower RPM's it stalled out the engine. I turned the tractor off and then checked to make sure the mower blades were able to be easily turned which they were. In the end I was able to get the mower going but i did have to up the RPM's to keep it from stalling. It did seem to run fine once i got it going. I am wondering if it is normal to have to engage at higher RPM's with a bush mower or if there is another underlying issue i may have to look into??
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Old 08-24-2019   #2
Roadworthy
2nd Yr. Apprentice
 
Join Date: Aug 2019
Location: Benton City, WA
Equipment: L2501 HST
Posts: 243
Default Re: B7610 with King Kutter XB Mower Question

The mower initially presents some resistance when engaged but your tractor should have sufficient power to turn it, though it may bog down until mower is up to speed. With PTO disengaged you should be able to turn the PTO shaft by hand. That will give you an idea how much resistance is there. I had an old 23 hp Mitsubishi running a five foot King Kutter with no problem though I never tried to engage it below about 1500 rpm. I'm pretty sure it would have stalled at idle. Even my lawn mower won't run the cutter at idle.
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Old 08-25-2019   #3
Shadetree03
1st Yr. Apprentice
 
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Join Date: Sep 2017
Location: Pueblo, CO
Equipment: L2501, King Kutter, Landscape Rake, Titan 3pt forks
Posts: 76
Default Re: B7610 with King Kutter XB Mower Question

Like Roadworthy mentions "though it may bog down until mower is up to speed. With PTO disengaged you should be able to turn the PTO shaft by hand. That will give you an idea how much resistance is there. "

My 5' King Kutter rotates easily by hand to hook up and align with the PTO splines, but I also use it frequently. If it is stiff, you may have wire wrapped up underneath, or low lube in the right angle gear box. My U-joints are a little worn, but get a shot of grease daily, and I freed up the blade pivot pins at the start of the season with lots of oil can squirts, and working them back and forth...l now it spins smoothly. I just need to grind out some of the nicks in the cutter blades..
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Old 08-25-2019   #4
Russell King
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Join Date: Jun 2012
Location: Austin, Texas
Equipment: L185F
Posts: 1,707
Default Re: B7610 with King Kutter XB Mower Question

When I engage my 4í cutter on my L185, I am at idle and just use the throttle a bit to get the mower rotating while easing the clutch out, tractor not in gear. Then I get the engine up to the speed on the tachometer thatís PTO of 540. Then push in clutch, engage gear take off and adjust everything back to proper engine RPM.


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Old 08-27-2019   #5
MadMax31
4th Yr. Apprentice
 
Join Date: Nov 2014
Location: New York
Equipment: BX23S, 60" MMM
Posts: 706
Default Re: B7610 with King Kutter XB Mower Question

I engaged my brush hog at 2k, feathered the clutch a touch.

I miss that clutch, my BX23s is a lever than just bangs on rear PTO...
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Old 09-01-2019   #6
Bores23
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Join Date: Aug 2019
Location: Stratford, WI
Equipment: B7610
Posts: 4
Default Re: B7610 with King Kutter XB Mower Question

Thank you for all the information! I was able to get this figured out.
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