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Troubleshooting


Using Troubleshooting Chart

If you are experiencing a problem that is not listed in this chart, see your authorized dealer for service.

When you have checked all the possible causes listed and you are still experiencing the problem, see your authorized dealer.

Engine

If

Check

Engine Will Not Start Or Is Hard To Start

• Motion control levers not in the neutral lock position.

• Park brake lever unlocked.

• Key switch not in proper position.

• PTO engaged.

• Fuel shutoff valve in OFF position.

• Stale or improper fuel / fuel level

• Plugged fuel filter.

• Plugged air intake filter.

• Spark plug wire is loose or disconnected.

• Spark plug not gapped correctly.

• Blown fuse.

• Electrical problem - dead battery.

• Choke adjusted incorrectly. See your John Deere dealer.

Engine Will Not Slow Idle

• Carburetion problems. See your John Deere dealer.

• Bent or kinked throttle cable.

• Bent governor control.

• Incorrect governor idle control.

Engine Runs Rough or Stalls

• Plugged fuel filter.

• Plugged air intake system.

• Fuel cap vent dirty.

• Stale or improper fuel / fuel level.

• Spark plug not gapped correctly.

• Replace spark plug.

• Choke adjusted incorrectly. See your John Deere Dealer.

Engine Knocks

• Engine oil level low.

• Reduce load. (Slower ground speed.)

• Fuel is bad. Fill tank with fresh fuel, correct octane.

• Idle speed too slow.

Engine Overheats

• Clean cooling fins.

• Low oil level.

• Do not operate at slow idle. Operate at fast idle.

• Cooling air intake screen is dirty.

• Plugged carburetor air intake filter.

• Plugged air intake filter.

• Operating at too fast ground speed for conditions.

Engine Lacks Power

• Plugged air intake system.

• Plugged fuel filter.

• Improper type of fuel. Drain tank and fill with correct fuel.

• Clean cooling fins to help prevent overheating.

• Replace spark plug.

Engine Uses Too Much Oil

• Find and correct oil leaks.

• Incorrect engine oil.

• Plugged oil filter.

• Plugged air intake filter.

Engine Backfires Through Muffler

• Throttle should be at low idle for two seconds before turning off machine.

High Fuel Consumption

• Improper type of fuel.

• Plugged air intake system.

• Operating at too fast ground speed for conditions.

• Improper valve clearance. See your John Deere Dealer.

• Restricted air intake system.


Electrical System

If

Check

Starter Will Not Work

• Blown fuse.

• Loose or corroded battery or ground connections.

• Neutral start switches faulty or not adjusted properly. See your John Deere Dealer.

• Key switch or starter faulty. See your John Deere Dealer.

• PTO engaged.

• Motion control levers and park brake lever not in proper position.

• Operator not on seat.

Battery Will Not Charge

• Loose or corroded battery or ground connections.

• Battery cables and terminals are dirty.

• Dead cell in battery.

PTO Switch Does Not Work

• Blown fuse

• Bad switch.

• Bad clutch.

• Failed regulator/restrictor.

• Loose PTO clutch connections.

Starter Turns Slowly

• Loose or corroded battery or ground connections.

• Low battery power - charge battery.

• Engine oil viscosity too heavy.

• Pump linkages failed and are engaged.


Machine

If

Check

Excessive Machine Vibration

• Engine speed too slow.

Machine Will Not Move With Engine Running

• Park brake locked.

• Transmission hydraulic oil level low.

• Transmission oil cold - allow engine to warm.

• Drive belt slipping or broken.

• Free-wheeling pump release valves open.

• Traction drive belt damaged or worn.

• Transmission problems. See your John Deere Dealer.

Machine Creeps With Engine Running and Motion Control Levers in a Neutral Position

• Needs linkage adjustment.


Brakes

If

Check

Brakes Not Working Correctly

• Brakes out of adjustment- adjust linkage.

• Brake drums wet.

• Worn brake shoes.


Steering

If

Check

Steering Not Working

• Free-wheeling pump release valves partially open.

• Improper tire Inflation.

• Hydrostatic transmission oil low.


Mower

If

Check

Discharge Chute Plugged

• Grass is wet - mow grass only when dry.

• Raise cutting height.

• Mow at full fast throttle.

• Ground speed too fast for conditions.

• Correct installation of deck drive belt.

Mower Deck Vibrates

• Run engine at fast throttle.

• Loose hardware.

• Check/replace deck drive belt.

• Blade bolts are loose.

• Blades are bent or worn.

• Sharpen and balance blades.

• Remove belt shields and clean debris from sheaves.

• Check sheaves for proper alignment or damage. See a John Deere dealer.

Mower Blades Do Not Engage

• Deck drive belt slipping or broken.

• Mule drive belt slipping or broken.

• Deck belt tension spring not installed or broken.

• PTO switch failure.

• Fuse is blown.

• Loose electrical connections.

Mower Mows Unevenly

• Mower deck not properly leveled.

• Ground speed too fast for conditions.

• Run engine at fast throttle.

• Reduce ground speed when making turns.

• Sharpen or replace blades.

• Change mowing pattern.

• Check air pressure in all traction unit tires.