Top 22 John Deere X350 Problems + Troubleshooting

This article may contain some affiliate links and if you make a purchase after clicking on any of teh links, we may earn a small commission at no additional cost to you.

The John Deere X350 is a fantastic lawn mower that has received wide acclaim across the country. It is strong, durable, and really meets up to the demands of a standard lawn mowers.

But then, everything that has upsides definitely has downsides. In other words, there are a few problems with John Deere x350 mowers that users often complain about.

These John Deere X350 problems can be pretty frustrating when they start. But no worries, today, I’m going to walk you through virtually all X350 issues you can think of and give you their solutions as well.

Stick with me, uh?

John Deere X350 Problems and Troubleshooting Tips

Now, let us look at the various John Deere x350 problems and how to troubleshoot and fix them:

1. X350 tractor engine will not start

  • The gas tank is bare – Load it up with fuel.
  • Low-quality gasoline – Use another brand of gas.
  • Old gas – Spill the fuel and put in a fresh one.
  • Jammed fuel system – Eliminate the clogging element(s).
  • Spark plug wires are destroyed – Examine the wires connection.
  • Spark plug not functioning – Remove and put a new one as expected.
  • Choked fuel filter – Put a new fuel filter.
  • Brake pedal not tugged down – Shove the brake pedal down.
  • Carburetor malfunction – Assess it and repair it as needed.
  • Examine your fuel transfer pump output and the compression.

See Also: John Deere 3038e Problems

2. X350 engine long starting

  • Spark plug flunked – Assess the plug and change it if necessary
  • The carburetor is filthy – Wash, clean and adjust
  • Dirt in fuel lines – Clean fuel system components
  • Choke cable not adjusted properly – Checking and adjusting
  • Stale or incorrect fuel – Fill in proper fuel
  • Electrical connections are damaged – Checking and replacing wiring if necessary
  • Starter fault – Test the starter and repair it if necessary

3. Engine runs roughly

  • Cooling fins shut off – Clean and tidy up cooling fins
  • Electrical connections wrecked – Inspect and renew impaired contacts
  • Ignition adjustment misplaced – Assess spark plug and ignition
  • Choke cables attaching to each other – Repair or change
  • Air cleaner element clogged – Change air cleaner

4. X360 Engine misses

  • Spark plug weakened – Assess spark plug wire for wet or damaged condition
  • Carburetor malfunction – Check and overhaul
  • Ignition coil not functioning – Change faulty component

5. JD X350 Engine overheating

  • Engine runs under excessive load – Decrease the load
  • Cooling fins or air inlet clogged – Tidy up the clogged components
  • Engine oil high or too low – Add or drain oil
  • Improper engine oil thickness – Replace engine oil
  • Check to attach the rod to the crankshaft carrying clearance
  • Rapid idle – Modifying fast idle speed

6. The engine does not idle

  • The spark plug doesn’t have enough gap – Tighten the spark plug rightly
  • Spark plug wear – Test spark and replace as needed

7. Engine knocking

  • Poor octane fuel – Drain it and pour in new fuel
  • Engine filled too full – Decrease loads
  • Low oil grade – Add engine oil
  • Insufficient engine speed – Reset carburetor
  • The cylinder bore and rings are worn out – Replace those components
  • Inspect for engine overheating from clogged cooling fins, inspecting and regulating valve clearance
  • Search for carbon build-up in the combustion chamber

8. X350 Engine backfires

  • Check the spark plug
  • Fix or replace the throttle
  • Fix carburetor idle mixture screw
  • Examine and adjust the ignition coil air gap
  • Check for sticking valves
  • Check valve clearance, and rectify if necessary
  • Assess flywheel key

9. The engine does not produce full power

  • Engine overheating – Change air cleaner
  • Engine oil filled too full – Drain surplus oil
  • Deficient fuel pump – Check fuel pump output
  • Governor not working – Inspect and rectify governor
  • Examine carburetor for clogged passages
  • Assess engine compression

10. X350 Engine consumes too much fuel

  • Limited choke outlet – Inspect choke cable
  • Carburetor malfunction – Fix carburetor

11. X350 Exudes black smoke

  • The air cleaner is filthy or greasy – Inspect and clean
  • Choke not fully connected – Check and put up the throttle correctly
  • Examine oil fill dipstick O-ring seal or cracked cap

12. X350 Starter does not run

  • Main fuse malfunction – Put a new fuse
  • Bad terminal connection – Tidy up the terminals
  • Battery discharged – Need to power the battery
  • The ignition switch is bad – Put a new lock
  • The starter is bad – Repair or change
  • Wiring damage – Replace wiring

13. The battery does not charge

  • One or more battery cells are gone – Change the battery
  • Bad connection between battery pole and cable – Replace or tidy up the cable

14. X350 Lighting does not work

  • The light plug is detached
  • Fix light bulbs
  • Short circuit in electrical wires

15. Tractor vibrates excessively

  • Equipment drive belts worn out – Inspect and change the damaged belt
  • The traction drive belt is worn – Install a new belt
  • Dirt on a driven pulley – Change if necessary
  • Mower blades malfunction – Change as needed

16. The engine is running, but the tractor is not moving

  • The parking brake is closed off – Release the parking brake
  • The bypass valve lever is connected – Disconnect the bypass valve
  • Mower blades could be slack – Fasten mower blades
  • Inappropriate blade balance – Assess blades for defects and balance as needed
  • Absence of oil in transmission – Load transmission with oil

17. Plugged discharge chute

  • The lawnmower is going too fast – Apply the breaks to lessen speed
  • Grass too lengthy – try working a short cutting height
  • Grass too moist – Hold until later to cut
  • Engine speed lessened – Modify throttle to complete opening
  • Constrained air flow – Change to high revs
  • Cutting too low – Cut higher
  • Inappropriate belt installation – Fit belt rightly

18. X350 Lawn mower leaving uncut grass

  • Cutting deck jamming – Deck cleaning needed
  • Broken blade – Change the blade
  • Deck status is too low – Assess and fix deck height
  • Grass bag too full – Clear out the bagger

19. Belt slips

  • The soil in the sheaves – Assess and clean
  • Drive belt damage – Put a new belt
  • Belt tension issues – Fix belt tension

20. The lawn mower vibrates excessively

  • Mower jammed or in pulleys – Take out the debris from the pulley or deck
  • Belt or sheaves errors – Replace faulty components
  • Belt or sheaves out of centering – Check and center them correctly
  • Blades out of equilibrium – Balance blades appropriately

21. Wrong cutting height – adjust the cutting height

  • Mower wheels not fitted correctly – Fix mower deck wheels properly
  • Low tire inflation – Inflating tires are needed
  • Blades acceleration too fast – Fix blades speed
  • Bent mower blades – Take out the bent blade and add a new one

22. Uneven Cut

  • Mower deck inadequate – Fix and level the deck height
  • Low tire inflation – Tire pressure needed
  • Improper rollers height – Fix mower deck wheels
  • Blades slackened – Fix a new blade

See Also: 5 Common John Deere 3010 Problems + Troubleshooting

Frequently Asked Questions

Does the John Deere X350 have the Kawasaki engine?

No, it does not have. John deere manufactures its own engines.

When did the John Deere X350 come out?

The John Deere X350 came out in 2016.

Does the John Deere X350 have PTO?

Yes, the John Deere X350 has a heavy-duty electric PTO clutch.

How much can a John Deere X350 tow?

The John Deere X350 can tow up to 125lb.

How much horsepower does a John Deere X350 have?

The John Deere X350 has up to 18.5 HP.


The x350 series is unique on its own and offers many amazing features that will handle most of your tasks effortlessly. 

Just remember, maintenance and adequate care will do just fine.