Which drive belt on which model of Kubota Z turn mower. We will need more information as well as well as the mower model number so we can see what you have.
Model number is Z121SKH , it's not the deck belt but the one above that drives the hyd motors , been doing this since new , owner brought it back to dealership 3 times with no results, brought it to me yesterday so I'm digging for information before I begin , thanks
Belt alignment, wrong belt size, wrong pulley/s and tension comes to mind. Wrong belt? Get the kevlar belts if you have a V belt in that location. Throwing a belt off to me sounds like the belt is too long. Or something under there is assisting the belt to come off. Worn pulleys and so on......
Definitely check the belt pulley alignment. Sounds like something is out of true. Something else to check is make sure that the hydro supports are in place and not broke or missing allowing the drives to tilt.
Thanks , I plan on pulling the deck off today and run it like that to verify alignment , pully conditions etc.
#7
VRR.DYNDNS>BIZ
examine the belt and report any thing found. Examine all rubs and tracking and report. Feel the idlers without tension and report. swing the tensioner and insure take up will happen. View design path of installation of belt is proper. Talk to factory tech if nothing found.
Finally got the deck removed so I could inspect the drive belt path, had to cut it off to get it out it was so crossed up , The tension arm assembly was installed too tight and would not " float " on the belt , Took some doing but I loosened up the holding bolt and got it to move freely , I'm 99% sure this was the whole problem f will prove it in the next few days when it all goes together , thanks again for everyone's input
there is a bulletin that deals with multiple belt failures. Kubota will pick up the tab on it, but there are some prerequisites. Call dealer and ask them about "Z 100 series mower multiple hst belt failures".
there is a bulletin that deals with multiple belt failures. Kubota will pick up the tab on it, but there are some prerequisites. Call dealer and ask them about "Z 100 series mower multiple hst belt failures".
Could you provide the reference number? My dealer says it doesn't exist, I am assuming the are trying to hide the fact they have a problem. Thanks in advance!
How old is your unit? About 3/4 years ago Kubota had an update kit which replaced the pulleys, idler arm and spring to resolve the problem. Possibility of the kit never installed if you purchased it used. You are the original owner should have received a letter back then advising how to handle this under warranty. Have your dealer check to see if it was completed, make sure you have your serial number available.
No idea about the belt & don't have access to factory information.
Just a word of warning in case you are not aware.
Down here we use the inside belt measurement .
Most of the people on this forum are in the USA where belts are measured on the outside thus a USA length will be 3" longer than an Aust belt length .
Down here we use the inside belt measurement .
Most of the people on this forum are in the USA where belts are measured on the outside thus a USA length will be 3" longer than an Aust belt length .
I assume from your post that you will be trying to buy an aftermarket belt from a general mower shop or play Russian Roulette on Evilpay or Ammozone otherwise there would be no reason to ask about the belt size.
Thus the warning as it often catches people out.
Consolidated Bearings are the main distribution point for Gates belts
Gates belts are mostly made in the USA and have USA sizes, but CBC sell them by Australian sizing .
One of my wholesalers resells Fenner belts and they are sized by the EU standard of effective length which are neither the same as the internal nor external lengths and of course in mm not inches .
#16
Ol Orange Hat
my 2290 also threw this same belt cost me 4 hrs labor to get it redone . is it recalled also?? it had 60 hours on it and the belt had no wear . I hit nothing as my lawn is flat and all grass. Really a terrible Engineering they have done to replace the belts . My g1900 diesel also had to have the trans. decoupled just to remove or put a new belt on .
Could you provide the reference number? My dealer says it doesn't exist, I am assuming the are trying to hide the fact they have a problem. Thanks in advance!
I do not have the bulletin number for your mower, sorry.
there were several updates that were done. They replaced the HST pulleys with wider ones, and they installed a debris guard under the rear side of the deck. Also a deeper groove idler pulley. It is basically updating the Z100 series to the Z231 series stuff. The 231's are updated and there have been zero problems out of the drive belts, at least in comparison to the Z100's. I own an older Z100 and is has had zero problem whatsoever, been a pretty good mower. Cuts great, steers great, fun, just a little noisy and a little on the light side but that's nitpicking.
