My 3320 john deere jerks and also shuts off the

Edited text with a wild guess at the maker. Make model (what it is) in all questions please.
Category moved to John Deere Tractor.

If it was working before, there is no need to worry about the firing order as that never changes. Things to look at;
Clean and correctly gapped spark plugs,
Clean gas,
Fuel filter?
and a clean carburetor, float bowl and jets.

John Deere 3020 Engine Engine Detail John Deere Firing order: Starter volts: Oil capacity: 9 qts 8.5 L 13 more rows •
Jul. 10, 2020

TractorData.com John Deere 3020 tractor engine information

John Deere 3020 Tractor Service Manual - Jensales

https://www.jensales.com > products > John-Deere-302...

This John Deere model 3020 Gas and Diesel Tractor Service Manual is a digitally enhanced reproduction of the original manufacturer-issued Shop Manual.
US$120.98 · ‎In stock

operators manual for john deere 3020 tractor owners ... - eBay

https://www.ebay.com > itm

3020 Tractor Operators Manual. This operators manual includes Gas, Diesel, Lp. This comprehensive manual includes. Fully Covers Serial No.
US$15.97 · ‎In stock

JOHN DEERE 3020 Gas and Diesel Tractor Service Manual

https://www.ebay.com > itm > JOHN-DEERE-3020-Gas...

This is a new reprint of John Deere Service Manual SM2041 for the John Deere 3000 Series Tractors shown above. It is dated June 1961. Includes 3010 & 3020.

You just go to the link I attached I'm sure you will get the solution of your problem.

John deere 3320

You just go to the link I attached I'm sure you will get the solution of your problem.
John deere 3320

Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
JOHN DEERE 4210 4310 4410 COMPACT UTILITY TRACTOR OPERATORS MANUAL...

Hi John:
Click opn this link
https://www.google.ca/search?q=John+Deere+755+service+manual&rlz=1C1GGGE_enCA468&oq=John+Deere+755+service+manual&aqs=chrome..69i57j0l5.888j0j8&sourceid=chrome&ie=UTF-8

Err 03 Reverse Pedal. Voltage signal out-of-range or not calibrated. Machine does not drive. Contact your John Deere dealer.

see these 2 forums
http://www.tractorbynet.com/forums/john-deere

http://www.mytractorforum.com/12-john-deere-forum

Both codes are related to the forward and reverse pedals.To cycle through and clear the codes,turn the key on and then press the forward pedal to the deck within 2 seconds and release and the do the same with the reverse pedal,the code should go away unless the problem persists.If so then you need to check the wiring to the potentiometers on each pedal and also check to see if one has been moved[knocked out of range]If none of the above is the case then either the forward or the reverse solenoids could be stuck there-by letting the tractor think you started it in gear,hence no movement,these checks are not really a do-it-yourselfer type checks so you may need to seek help from Deere,hope this helps,thanks.

Lcd display switch is stuck in the on position either play with the switch until the code goes away or have the dealer replace the switch,it should still have warrenty.