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John Deere 322 Troubleshooting

The John Deere 322 garden tractor was manufactured from 1988 to 1992. The JD 322 is equipped with Yanmar 3TG66UJ four-stroke three-cylinder liquid cooled gasoline engine and Sundstrand 15 shaft-driven hydrostatic transmission.

A 40.2 cu.in (0.66 L) engine has a cylinder bore of 2.6" (66 mm), piston stroke of 2.53" (64 mm), and maximum power of 18 hp (13.4 kW). Max. forward speed - 35 km/h, max. reverse speed - 22 km/h. The hydraulic system capacity is 1.63 gal (6.2 L). The tractor was equipped with a power steering system, mechanical drum brakes, 16x6.50-8 front tires, and 23x10.50-12 rear tires.

The wheel base is 46 in (1160 mm). The John Deere 322 garden tractor is compatible with the following attachments: 38", 46", 50" mid-mount 3-blade mower decks with hydraulic lifting system, 54" front-mount blade with hydraulic or manual angle, 46" front-mount single-stage snow blower, 47" front-mount two-stage snow blower, and John Deere 44 front end loader with lift capacity to full height of 400 lbs (181 kg).

Engine Troubleshooting
Engine hard starting or not starting
Empty fuel tank - Add fuel
Improper fuel grade - Use quality fuel
Dirt and debris in fuel system - Remove debris and dirt
Faulty spark plug wire connection - Check the spark plug wire connection, repair or replace
Spark plug is defective - Change spark plug
Fuel filter is plugged - Fuel filter needs changing
Faulty safety switch - Change damaged switch
Carburetor malfunction - Check and repair as required
Poor engine compression - Check cylinder block and replace damaged components
Not adjusted or damaged throttle cable - Adjust correctly or change the cable
Engine runs irregularly
Air intake screen is blocked - Clean and wash as required
Defective ignition system - Inspect ignition system and change failed components
Defective or stuck throttle cable - Service or replace the cable
Plugged air filter - Replace or clean air filter
Fuel pump is faulty or clogged - Test fuel pump and replace if necessary
Engine starts and stalls immediately
Spark plug is defective - Replace spark plug
Clogged or faulty carburetor - Clean or replace carburetor
Ignition coil is defective - Change ignition coil as required
Weak or damaged valve springs - Valve springs need to be changed
Valves are stuck - Service the valves
Engine overheated
Not enough engine oil - Checking oil level and add if necessary
Engine is overloaded - Reduce load
Cooling fins are plugged - Clean and wash as required
Too lean fuel mixture in carburetor - Set the carburetor properly
Ignition timing is improper - Set the ignition timing correctly
Valve setting is wrong - Valves needs to be adjusted properly
Abnormal engine knocking or noise
Stale or low octane fuel - Use proper fuel
Engine is under excessive load - Reduce the load
Low engine oil level - Fill the crankcase with engine oil
Incorrect low idle setting - Need to adjust idle speed
Dirty or damaged fuel pump - Clean or replace fuel pump
Worn crankshaft or main bearings - Change defective components as required
Excessive valve clearance - Adjust valve clearance according to specifications
Cylinder bore or piston rings are damaged - Change faulty components
Engine power is insufficient
Carburetor is incorrectly adjusted or clogged - Service or properly adjust carburetor
Air filter element is plugged - Replace or clean air filter
Dirty or faulty fuel pump - Clean or install new fuel pump
Ignition system failure - Inspect ignition system and change faulty parts
Cylinder head gasket is damaged - Install new head gasket
Valves are stuck or burned - Clean or replace valves
Push rod is worn or damaged - Change push rod
Faulty cylinder block components - Replace defective components
High fuel consumption
Choke doesn't open well - Adjust or replace choke cable
Carburetor main jet is improperly adjusted - Adjust it properly
Spark plug is faulty or loose - Spark plug need to be tightened or replaced
Valves are worn, burned or stuck - Replace or service valves
Piston, sleeve, or rings are damaged - Replace defective parts as required
Valve clearance is wrong - Adjust valve clearance
High oil consumption
Worn gaskets or seals - Defective components must be replaced
Valve guides or stems are damaged - Install new valves
Stuck or worn piston rings - Have piston rings replaced
Piston or cylinder liner is scuffed - Inspect piston and liner, change as required
Breather hose or pipe is blocked - Change or service

Hydrostatic Transmission Troubleshooting
HST transmission is making noise
Worn or out of adjustment speed control linkage - Change or adjust linkage
Excessive loading - Reduce the load is required
Contaminated transmission fluid or low fluid level - Pour fresh fluid or add transmission fluid to proper level
Transmission components are damaged or worn - After disassembling and inspection, change defective components
Hard shifting
Shift linkage is corroded or worn - Lubricate or replace linkage
Hydrostatic pump is seized or faulty - Repair or replace pump
Faulty or misadjusted transmission shift control parts - Adjust properly or change
Loss of power
Lack of transmission oil supply - Need to add transmission oil
Worn or faulty drive pulley - Replace pulley
Shifter linkage is faulty or not adjusted - Replace or adjust linkage
Defective or not adjusted speed control pedal linkage - Adjust or replace linkage
Transmission leaking
Transmission seals or gaskets are broken - Change gaskets or seals
Leaking final drive shaft - Replace shaft seals
Transmission case is cracked - Install a new transmission case

Mower Deck Troubleshooting
Mower vibration is excessive
Mower deck drive pulley is worn or dirty - Change or clean pulley
Worn or loose drive belt - Adjust belt tension or replace belt
Unbalanced or warped mower blades - Balance or change blades
Loose blade mounting bolts - Tighten it fast
Discharge chute is regularly plugged
High mowing speed - Select a lower speed
Long grass - Must be set to low cutting height
Engine rpm is too low - Adjust carburetor to higher rpm
Mower cuts too low - Need to set high cutting height
Incorrect mower drive belt installation - Install drive belt as required
Streaking of uncut grass
Deck is plugged with grass - Check cutting deck and clean as necessary
Blades are not sharp - Need to sharpen the blades
Blades are defective or worn - Blades need to be replaced
Fast ground speed - Select a slower speed
Mower cuts too low - Use a higher cutting height
Grass bag is full - Grass bag must be empty
Blade scalped grass
Bumpy or unleveled lawn - Lawn needs to be leveled
Cutting height is too low - Change cutting height adjustment
Fast mowing speed - Use a lower speed
Incorrect level of mower deck - Level the deck properly
Bent or worn blades - Change the blades
Incorrect tire pressure - Inflate tires as required
Uneven cutting
Tire pressure is too low - Inflate tires as required
Deck level is not correct - Deck needs to be adjusted properly
Not sharp blades - Need to sharpen the blades
Bent or worn blades - Blades need to be replaced
Cutting deck clogging - Need to clean the mower deck
Deck housing is damaged - Rebuild or change mower deck
Mower spindle is loose or defective - Install new spindle or repair it

Electrical Troubleshooting
Battery does not charge
Corroded or loose wire connections - Service or tighten connections
Battery terminal clamps are faulty - Change terminal clamps
Battery is worn - Use a new battery
Starter cranks slow
Low battery power - Recharge the battery
Battery will not hold charge - Service battery or change it
Faulty battery terminals or disconnected cables - Check battery wires and service or replace terminals
Starter will not work
Battery is discharged or worn - Change or recharge battery
Disconnected or incorrectly connected wires - Inspect battery wires and connect correctly
Low battery voltage - Battery is drained, charge it
Spark plug gapped improperly or faulty - Clean, gap or replace spark plug
Solenoid or starter motor failure - Replace solenoid or repair starter




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