Small Kubota tractor

[KyleS]

My Kubota will start and run perfect but will not throttle up!
I’ve done the following,
New injectors, new head gasket, new pump, new fuel filter, new rings, new diesel, and it still we not throttle up. What else could it be?
Thank you in advance!

 

[bx tractorjoe]

What kind of kubota ? Possible the pin for the throttle lever inside the injection pump has come lose, or the rack arm is broke..

Is it a hand throttle or does it have a solenoid or something else?

 

[RCW]

Kyle - -

You need to give model information for anyone to give you a best guess to fix it.

"Small Kubota Tractor" doesn't work...

 

[armylifer]

As mentioned above, we need the model of your tractor to help you. If you do not know the model maybe we can help if you post a picture of the tractor from a side view and at least one of the engine compartment. Try to show a view of the throttle linkage.

 

[85Hokie]

and you own a 3 cylinder ..... please do as others said. Give us model # and you will be surprised the help you will get!!

 

[mikester]

My Kubota will start and run perfect but will not throttle up!
I’ve done the following,
New injectors, new head gasket, new pump, new fuel filter, new rings, new diesel, and it still we not throttle up. What else could it be?
Thank you in advance!

From your repair list we should be asking you how to fix things!

Start with the basics. If you manually move the linkage by hand does it throttle up? If not, is your fuel filter full of diesel or do you see air?

 

[KyleS]

The model number is B20

 

[KyleS]

and you own a 3 cylinder ..... please do as others said. Give us model # and you will be surprised the help you will get!!

B20

 

[KyleS]

The model number is B20

B20

 

[KyleS]

B20

 

[85Hokie]

B20

So now we are dealing with a D950-A-T

So - give us a background as to why you replaced this " New injectors, new head gasket, new pump........."

Did this over heat? Did this have low compression?

And you say it will not throttle up - so, it will start and will idle?

Give us the full history of this machine.

 

[KyleS]

So now we are dealing with a D950-A-T

So - give us a background as to why you replaced this " New injectors, new head gasket, new pump........."

Did this over heat? Did this have low compression?

And you say it will not throttle up - so, it will start and will idle?

Give us the full history of this machine.

It was running perfect and just lost power, yes it starts and idles, did not over heat, it didn’t have compression that when I replaced the rings.

 

[armylifer]

It sounds to me like you may have a broken throttle cable. Can you manipulate the throttle in the engine compartment and get it to rev up? Also, does that model have two fuel filters like the BX models do? You might want to check on that.

 

[KyleS]

It was running perfect and just lost power, yes it starts and idles, did not over heat, it didn’t have compression that when I replaced the rings.

It will throttle up in the engine department but will only do so gradually, it want do it quickly

 

[armylifer]

It will throttle up in the engine department but will only do so gradually, it want do it quickly

See post #13.

 

[KyleS]

As mentioned above, we need the model of your tractor to help you. If you do not know the model maybe we can help if you post a picture of the tractor from a side view and at least one of the engine compartment. Try to show a view of the throttle linkage.

 

[KyleS]

I’ve also had the heads reworked and put a new fuel pump on