BX23S Throttle slip

RWey56

Member

Equipment
BX23S
Feb 8, 2018
111
3
18
Stanchfield, MN
The throttle lever won't stay in one place on my BX. The spring tension of the system keeps pulling it back down to low RPM. I've tightened the friction plate nuts twice, but it it seems they keep loosening up. Is there some way to adjust this and have it last? Very frustrating.
 

North Idaho Wolfman

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Lifetime Member

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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
28,607
5,067
113
Sandpoint, ID
Are you locking the 2 nuts together?
It should be able to loosen up on it's own!
 

Kevin1

Member

Equipment
Husqvarna MZT 52, BX2380,FEL, Box blade, Landscape Rake
Dec 15, 2017
127
2
18
New Bern, N.C.
Two nuts on bottom of throttle lever (access through battery compartment) need to be tightened back down. My 2380 did that at 50 hours.
 

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
28,607
5,067
113
Sandpoint, ID
I think NIW left one word out of the sentence. Right between the word "should" and "be" I am quite sure the word "not" needs to be inserted!!
OOPS... Yep that was supposed to have a not in it! :D
 

RWey56

Member

Equipment
BX23S
Feb 8, 2018
111
3
18
Stanchfield, MN
Of course I tighten the jam nut. I have some lock tight to use next time. I seem to be tightening both quite a bit and it keeps slipping, and I'm afraid to tighten it too much. Maybe I'll take it apart and put some sand between the two plates. Provide a little grid so it has something to bind to. Either that or loosen the throttle spring a bit.
 

North Idaho Wolfman

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Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
28,607
5,067
113
Sandpoint, ID
I'm pretty sure if it needs sand to make it work right it's not a kubota! :rolleyes:
 

RWey56

Member

Equipment
BX23S
Feb 8, 2018
111
3
18
Stanchfield, MN
I'm pretty sure if it needs sand to make it work right it's not a kubota! :rolleyes:
Well, yeah ... I know. That was somewhat tongue-in-cheek. I'll have another go at it and figure it out.

What I did notice that's rather strange, however, is when it's tightened up properly (while it lasts), the idle RPM gets down to the normal 1450. When it starts loosening up, the idle RPM bottoms out at about 1550 or maybe a bit higher. Thus, the two are related somehow.
 

dalola

Member

Equipment
BX2380 w/FEL & Woods RM48 RFM, Yazoo/Kees Max2 ZTR
Jun 30, 2017
316
6
18
Ohio
Well, this is certainly a Kubota "D'oh!" stupid design. Seems they all have a stupid attack here and there....just a matter of who has less!

Anyway, I've been battling this annoyance as well, and I think I'm gonna try a nylock nut. Looks like a 8mm x150 thread.

The double jam nuts are just dumb, especially when they are both so thin you can't use a normal wrench to lock them together.

Will report back how the nylock works.
 

Howling

Member

Equipment
BX2370
Feb 5, 2016
217
10
18
Ayer, MA
On my BX2370-1 there is washer stack above the nuts. The cupped/rubber washers stack up to make spring.
Throttle washers.jpg

How much you compress the washers with the first nut adjusts the friction holding the throttle in place. The second nut just locks to first to keep them from vibrating off.

Mine has M8 standard flange nuts.
 

rlcotter

Member

Equipment
BX23S Cab;3pt Blade;HLA Snow Pusher;BX Armour;HLA Fork;Ratchet Rake, Snow Edge
Mar 24, 2016
50
0
6
Ontario, Canada
I have the BX23S and had the same problem. Used a nylon nut and resolved the issue.

Les.
 

dalola

Member

Equipment
BX2380 w/FEL & Woods RM48 RFM, Yazoo/Kees Max2 ZTR
Jun 30, 2017
316
6
18
Ohio
I have the BX23S and had the same problem. Used a nylon nut and resolved the issue.

Les.
Good to know, haven't had time to switch mine out yet. Why Kubota doesn't use a Nylock from the get-go I do not know... probably cost, maybe a couple cents more than two regular nuts I suppose.