Jx75 throttle issues

[Williams1020]

So i got this jx75 and it will start but back fires.
It wont really throttle up kinda like its not getting fuel.
If i lean the mower back on the rear tires, the rpm’s increase but still backfires.
If i put it back on all four’s the rpm’s decrease and theottle up with the lever.
What ya think guys?
Thanks ~jason

 

[Williams1020]

Btw! The plug is fresh, fuel is new, fuel is getting to the carb and there is no change in how it runs if i pull the air filter.
I got a short video but cant figure out to upload it.

 

[Boudreaux In Eunice La.]

What engine do you have on there and get the model and type numbers also ~!~!

 

[Williams1020]

What engine do you have on there and get the model and type numbers also ~!~!

This what youre talkin about?

 

[Williams1020]

.....

 

[Boudreaux In Eunice La.]

Glad you bumped the thread..... I forgot about this thread I hardly go to the JD section..... Let me look your engine up......

 

[Boudreaux In Eunice La.]

I would take the carb off and get that fuel nozzle out and clean the holes on the side of it and the 2 main holes on the ends...... Check your bowl nut for a hole in the top and some on the sides......

Clean the holes with a small wire then spray carb cleaner in all the holes well..... Clean the body of the carb inside and clean the bowl out with a brass tooth brush if corroded...

Let us know Mon Ami ~!~!

 

[Williams1020]

I pulled that jet out with the engine running before i posted this thread.
It increased the rpm level and back to how it was running when i put it back.
I dont squat about mowers or four stroke engines.
I know my way around two stroke engines though.

 

[Boudreaux In Eunice La.]

Like I said I don't come to this section often........

You said you took the jet out WHILE the engine was running ?????? I am confused ..... From what you described your carb needs a tear down and a good cleaning ~!~!

Let us know Mon Ami ~!~!

 

[Williams1020]

Like I said I don't come to this section often........

You said you took the jet out WHILE the engine was running ?????? I am confused ..... From what you described your carb needs a tear down and a good cleaning ~!~!

Let us know Mon Ami ~!~!

Circled the jet.